Multi-Channel, Multi-Amplifier Audio System Using Software Crossover and Multichannel-DAC

[dualazmak]

Hello friends,

Let me share with you an interesting 8-page web article on Yamaha speakers especially focusing on NS-5000, NS-1000M, NS-1000 (I have been using in this project thread), NS-2000, NS-1000X and the ultimate(!) NSX-10000. This article was written in December 2016 just after the launch of NS-5000.

Based on my I personal experience of attending Yamaha's promotion event of NS-5000, I fully agree with the writer of the article for rather disappointments on NS-5000.

I hope your web browser would properly translate the nice article written in Japanese into English.

BTW, I assume many of you are not familiar with the ultimate Yamaha's centenary model NSX-10000.

 

[dualazmak]

Hello friends,

Some of my dear ASR friends suggested me sharing my present audio setup on the thread entitled "The kit we bought, our current setups".
Accordingly, yesterday I posted about my latest setup, here (post #636) on that thread.

Regarding my setup post #636 in the thread entitled "The kit we bought, our current setups", two of my audio enthu friends in Japan cordially contacted me by e-mail asking for backside wiring (jungle?) photos of PCs-DACs-amplifiers and also backside photos of SPs; they said that the photos would be better to be added in that post.

Accordingly, I edited/added further four photos in the post #636 on that thread. I do hope the added four photos (also shared here as follows) would be quite self-explanatory...

 

[dualazmak]

Hello friends,

Judging from my recent several PM communications with dear audio enthu friends, it looks some of them still have a little bit frustration/confusion in understanding nature and role of ASIO4ALL in I/O with digital XO/EQ software "EKIO".

I added today, therefore, one diagram shown below in my post #297 and in my post #6;

 

[dualazmak]

Hyperlink index of this thread and some of my related posts in remote threads

This thread is still vividly alive and growing; accordingly, the same for this hyperlink index post.

- General introduction_ topics, discussions to be shared in this thread: #001

- Rather detailed background and preceding history towards my multichannel multi-driver multi-way multi-amplifier stereo project: #030, #128, #178, #015(remote thread)

- The latest total system configuration with DIY 12-VU-Meter Array, the best tuned time alignment and Fq response, together with further various setup info: as of May 30, 2022: #540

- Total system configuration and the best tuned Fq response; as of January 25, 2022: #508

- Updated latest system diagrams as of January 2, 2022: #485

- Latest best tuned total frequency response of the whole system as of January 2, 2022: #485

- Latest system setup as of August 7, 2021: #416, #636(remote thread)

- Latest best tuned total frequency response of the whole system as of January 2, 2022: #485

- Updated latest system diagrams as of January 2, 2022: #485

- Perfect (0.1 msec precision) time alignment of all the SP drivers greatly contributes to amazing disappearance of SPs, tightness and cleanliness of the sound, and superior 3D sound stage: #520

- How to organize digital music library; sharing my policy and operation: #004(remote thread), #346

- Outline and brief introduction to digital XO/EQ software EKIO: #002
- Speaker cabling board for single-amp and multi-amplifier setups: #004, #137, #250
- Synchronization or not between multiple DAC units: #003, #074

- Passive LC crossover network in outer box before multichannel project: #005

- Why all ASIO I/O audio routing on Windows PC? #1,837(remote thread)
- Full ASIO I/O with digital XO/EQ software EKIO: #006, #297

- REW-Wavelet analysis in digital domain to check delay configuration in EKIO: #017, #018
- Room acoustics measurements with REW-Wavelet: #020-#022
- Fq response with Yamaha NS-1000 before the multichannel project: #011, #019, #023, #033

- Sony "Super Audio Check CD": #026
- Unique super tweeter physical alignment (positioning) in the project : #027
- VCT (vinyl Cabtyre) multicore flexible cables (AWG10, AWG12) for amplifiers into speaker drivers: #028, #137

- Phase issues -1-: #031
- Phase issues -2-: #033
- Phase issues -3-: #034
- Phase issues -4-: #039

- My audio sampler music tracks: #044, #357, #519

- Yamaha XM4080 4-Ch PA amplifier (not tested): #055

- Yamaha's original passive LC network in NS-1000: #033

- Difference between Yamaha NS-1000 and NS-1000M, and a few of reference websites for these two speakers: #084

- Where to control master volume and relative gains? #058, #060, #062, #191-#221
- Inter-channel delay or not in software XO/EQ/DSP: #077-#080

- Useful web articles on Yamaha NS-1000 and NS-1000M: #084

- OKTO DAC8PRO firmware 1.32 arrived and photos: #092-#094, #131
- DIYIHNK v4.59.0 ASIO USB driver for DAC8PRO: #095

- DAC8PRO in 2xDSD (DSD128); overall sound comparison with OPPO Sonica DAC: #096
- DAC8PRO in 192 kHz 24 bit; overall sound comparison with OPPO Sonica DAC: #097
- DAC8PRO in 192 kHz 24 bit; overall sound check in any pair of 8 channels: #098, #100

- Phase-delay discussion with QMouse and Kal Rubinson: #109-#123
- Does DAC8PRO need warming-up? no! : #124, #131

- "First-to-try" EKIO Configuration, policy and approach: the simpler, the better: #129
- "Second-to-try" EKIO Configuration trusting EKIO to mimic NS-1000's attenuator settings: #130

- Useful public domain documents and books for understandings on audio crossover: #132-#135

- EKIO uses IIR filters; cascade 2nd order direct form II biquad in 64 bit floating point: #138-#142
- EKIO (using IIR filters) gives audible post-ringing or pre-ringing, or not?: #143

- DAC8PRO's headphone out for RCA unbalanced input to sub-woofer Yamaha YST-SW1000: #162

- Possible use of Yamaha MX-A5200 (class-AB) 11-Ch AV amp; specs etc. #164-#168, #170-#171
- Tests, evaluation and conclusion with Yamaha MX-A5200 (class-AB) 11-Ch AV amp: #175

- Invaluable discussion with Igor Kirkwood who is using Yamaha NS-1000X in his multichannel rig: #179-#189

- AES/EBU Sync connection from DAC8PRO (CH1+CH2) to Onkyo DAC-1000: #190

- Again, where to control master volume? #191-#221

- Completely silent audio (audio-visual) dedicated Windows PCs in this project: #225

- Tests and evaluations of Dentech Hypex NC400 DP-NC400-4-EXP (class-D) multichannel (4-Ch) amplifiers: #228-#230

- Protection capacitors for Be-squawkers, Be-tweeters and metal horn super tweeters: #245

- In depth insights on SP attenuators and their elimination in multichannel system: #248, #251, #99(remote thread), #100(remote thread), #101(remote thread)

- Elimination of magnetic susceptible metals in SP signal handling: #250, #013(remote thread)

- How can I test/compare one candidate stereo amplifier in multichannel multi-amplifier project? #249

- Phase discussion with Lbstyling: #254-#257

- Benchmark AHB2 (class-A[H]B)_Part-1_Comparison with ACCUPHASE E-460 in Single-Amplifier + LC-Network full range reference sound system: #253
- Benchmark AHB2 (class-A[H]B)_Part-2_Incorporation in multichannel multi-amplifier system and Listening sessions: #258, #265

- Rotel RB-1582 MkII (class-AB)_Part-1_Comparison with AccuphaseE-460 and Benchmark AHB2 in single-Amplifier + LC-network full range reference sound system: #263
- Rotel RB-1582 MkII (class-AB)_Part-2_Incorporation in multichannel multi-amplifier system and listening Sessions: #264, #265

- Invaluable discussion with tpazadpom on subjective listening impressions on amps: #266, #268
- Coarch_Kaarlo's evaluations on Yamaha NS-2000: #271, #272

- Background and discussions on possible use of class-A amplifier(s) in multichannel multi-amplifier project: #265, #267, #269, #270, #273, #275, #281

- Interesting suggestions from an amplifier engineer in Japan on amplifier exploration: #281

- Accuphase provides repair and maintenance services for any of their past and present products (including my E-460) sold in the past 50 years: #045(remote thread)

- Accuphase A-36 (class-A)_Part-1_In single-amplifier and bi-amplifier + LC-network audio system: #282
- Accuphase A-36 (class-A)_Part-2_In multichannel multi-amplifier audio system: #283

- Possible "Type" of three amplifiers in current multichannel multi-amplifier project: #284

- Teac AX-505 and AP-505 (both class-D)_Part-1_In single-amplifier and bi-amplifier + LC-network audio system: #290
- Teac AX-505 and AP-505 (both class-D)_Part-2_In multichannel multi-amplifier audio system: #291

- Possible three plans for amplifiers in current multichannel multi-amplifier project: #292

- Again, full ASIO I/O with digital XO/EQ software EKIO: #297, #006

- Possibilities of Sony TA-A1ES (quasi class-A) and Yamaha A-S3000 (class-AB) in multichannel multi-amplifier project: #302, #305

- Yamaha A-S3000 (class-AB) and Sony TA-A1ES (quasi class-A)_Part-1_In single-amplifier + LC-network full range audio system: #307
- Yamaha A-S3000 (class-AB) and Sony TA-A1ES (quasi class-A)_Part-2_In In bi-amp + LC-network stereo system together with Accuphase E-460: #308
- Yamaha A-S3000 (class-AB) and Sony TA-A1ES (quasi class-A)_Part-3_In multichannel multi-amplifier stereo system together with Accuphase E460: #309

- (Provisional) Decision on amplifiers selection and photos of the listening environments: #311

- Discussion on rather subjective aspects including "musicality" on amplifier selection: #313-#317

- L+R Frequency response at usual listening position in the listening room and environments: #318-#320, #323-#330
- Frequency response measurements in digital domain/level, in DAC8PRO's analog output level, and in amplifier's output level: #321

- Startup (ignition) sequences and shutdown sequences of multichannel multi-amplifier system: #322, #426

- Interesting and intensive discussions with mikessi and gene_stl mainly on Yamaha NS-1000 and NS-1000M, especially on its still-amazing Be-dome midrange driver: #322-#342

- Introduction to my new thread entitled "Lute Music: Stunning Recordings We Love": #343

- TheBatsEar's nice comments on super tweeters and Yamaha amplifiers: #348-#353

- Info on Danville Signal's dspNexus 2/8 and dspNexus 2/16, 2-in 8-out, 2-in 16-out, new one-box DSP units: #355, #356

- My audio sampler music tracks, updated: #357

- "Near ultrasound - ultrasound" ultra-high frequency (UHF) noises in improperly engineered/processed HiRes music tracks, and EKIO's XO-EQ configuration to cut-off such noises: #362-#386, #518

- New standard EKIO digital crossover configuration with high-cut (low-pass) -48 dB/Oct LR filters at 25 kHz: #386

- Brief discussion and links to the remote review post/thread on Trinnov Altitude 16: #387

- Frequency response measurements by "cumulative pink noise averaging": #388-#390

- Frequency response measurements by "cumulative white noise averaging": #392
- Where in my multichannel multi-driver (multi-way) multi-amplifier stereo system should I measure/check frequency (Fq) Responses? #393

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-1_Fq Responses in EKIO’s digital output level: #394

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-2_Fq Responses in DAC8PRO’s analog output level: #396

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-3_Fq Responses in amplifiers’ SP output level before protection capacitors: #401

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-4_Fq Responses in amplifiers’ SP output level after protection capacitors: #402

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-5_Fq Responses in actual SP room sound at listening position using one measurement microphone: #403

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-6_Summary, discussions, and a little step forward: #404, #405-#409

- Frequency response in the new (latest) configuration with four amplifiers plus active sub-woofers: #410
- Frequency response measured under subjectively best fine-tuned gain/volume settings with the four amplifiers plus active sub-woofers: #411
- Intensive comparison of high-range sound cleanliness/clearness between Option-3 and Option-4 for driving super-tweeters: #413

- Links to interesting and informative discussions on the two remote threads where I partly participates having my experiences in this multichannel multi-driver (multi-way) multi-amplifier project; What makes speakers "disappear" and can it be measured? and Midrange dome drivers banned? #412

- Updated system diagrams and photos as of August 7, 2021: #416, #636(remote thread)

- Updated startup (ignition) sequences and shutdown sequences of multichannel multi-amplifier system: #426

- Even Greg Timbers uses "reasonable and budget" Pioneer Elite A-20 for compression drivers (super tweeters) in his extraordinary expensive multichannel stereo system with JBL Everest DD67000 which he himself designed and developed: #435

- A serious jazz fanatic friend came to my home for audio sessions using my multichannel multi-driver multi-way multi-amplifier stereo system: #438

- An interesting 8-page web article on Yamaha speakers: #441

- Backside wiring photos of PCs-DACs-amplifiers and also backside photos of SPs: #442, #636(remote thread)

- Information exchange is in progress after this post on this remote thread regarding FOCUSRITE Scarlett 18i20 2nd gen (and 3rd gen) (CS4272 [x4] + CS4392) as well as MOTU UltraLite Mk5 (two ES9026pro) ; it looks both of them support simultaneous sync 10-channel DAC processes: #449

- Just thinking about possibility and feasibility of adding a pair of woofer (or a pair of completed SP as woofer) in present multi-channel multi-driver (multi-way) multi-amplifier stereo setup: #451, #167(remote thread), #170 (remote thread), #183(remote thread), #455, #459-#461, #462-#466, #469, #31(remote thread), #470, #471, #473, #474, #476, #477, #495

- Again, about Yamaha Beryllium dome midrange driver JA-0801, and about DIY restoration and refreshment of NS-1000/NS-1000M: #478-#482, #486-#492

- Overhaul maintenance of super-tweeter FOSTEX T925A and further signal fine tuning thereafter: #485

- Latest best tuned total frequency response of the whole system as of January 2, 2022: #485

- Updated latest system diagrams as of January 2, 2022: #485

- Precision measurement and adjustment of time alignment for speaker (SP) units: Part-1_ Precision pulse wave matching method: #493
- Precision measurement and adjustment of time alignment for speaker (SP) units: Part-2_ Energy peak matching method: #494
- Precision measurement and adjustment of time alignment for speaker (SP) units: Part-3_ Precision single sine wave matching method in 0.1 msec accuracy: #504, #507

- Measurement of transient characteristics of Yamaha 30 cm woofer JA-3058 in sealed cabinet and Yamaha active sub-woofer YST-SW1000: #495, #497, #503, #507

- Identification of sound reflecting plane/wall by strong excitation of SP unit and room acoustics: #498

- Short communication on my preference in room acoustics: #502

- Total system configuration and the best tuned Fq response; as of January 25, 2022: #508

- Again, "Near ultrasound - ultrasound" ultra-high frequency (UHF) noises in HiRes music tracks, and EKIO's XO-EQ configuration to cut-off such noises: #518

- Perfect (0.1 msec precision) time alignment of all the SP drivers greatly contributes to amazing disappearance of SPs, tightness and cleanliness of the sound, and superior 3D sound stage: #520

- My nostalgia and preference for large glass-face VU meters: DIY of 12-VU-Meter Array in multichannel multi-driver multi-way multi-amplifier stereo audio system: #535

- NISHIZAWA R-65 VU meter plus ATV205EXT VU amp board is compatible with IEC 60268-17 VU meter specification/standard: #545

- The latest total system configuration with DIY 12-VU-Meter Array, the best tuned time alignment and Fq response, together with further various setup info: as of May 30, 2022: #540



Further hyperlink indexes will be added in this post along with the steady growth of this thread...

 

[Doodski]

Hyperlink index of this thread and some of my related posts in remote threads

This thread is still vividly alive and growing; accordingly, the same for this hyperlink index post.

- General introduction_ topics, discussions to be shared in this thread: #001

- Rather detailed background and preceding history towards my multichannel multi-driver multi-way multi-amplifier stereo project: #030, #128, #178

- Latest system setup as of August 7, 2021: #416, #636(remote thread)

- How to organize digital music library; sharing my policy and operation: #004(remote thread), #346

- Outline and brief introduction to digital XO/EQ software EKIO: #002
- Speaker cabling board for single-amp and multi-amplifier setups: #004, #137
- Synchronization or not between multiple DAC units: #003, #074

- Passive LC crossover network in outer box before multichannel project: #005

- Why all ASIO I/O audio routing on Windows PC? #1,837(remote thread)
- Full ASIO I/O with digital XO/EQ software EKIO: #006, #297

- REW-Wavelet analysis in digital domain to check delay configuration in EKIO: #017, #018
- Room acoustics measurements with REW-Wavelet: #020-#022
- Fq response with Yamaha NS-1000 before the multichannel project: #011, #019, #023, #033

- Sony "Super Audio Check CD": #026
- Unique super tweeter physical alignment (positioning) in the project : #027
- VCT (vinyl Cabtyre) multicore flexible cables (AWG10, AWG12) for amplifiers into speaker drivers: #028

- Phase issues -1-: #031
- Phase issues -2-: #033
- Phase issues -3-: #034
- Phase issues -4-: #039

- My audio sampler music tracks: #044, #357

- Yamaha XM4080 4-Ch PA amplifier (not tested): #055

- Yamaha's original passive LC network in NS-1000: #033
- Difference between Yamaha NS-1000 and NS-1000M: #084

- Where to control master volume and relative gains? #058, #060, #062, #191-#221
- Inter-channel delay or not in software XO/EQ/DSP: #077-#080

- Useful web articles on Yamaha NS-1000 and NS-1000M: #084

- OKTO DAC8PRO firmware 1.32 arrived and photos: #092-#094, #131
- DIYIHNK v4.59.0 ASIO USB driver for DAC8PRO: #095

- DAC8PRO in 2xDSD (DSD128); overall sound comparison with OPPO Sonica DAC: #096
- DAC8PRO in 192 kHz 24 bit; overall sound comparison with OPPO Sonica DAC: #097
- DAC8PRO in 192 kHz 24 bit; overall sound check in any pair of 8 channels: #098, #100

- Phase-delay discussion with QMouse and Kal Rubinson: #109-#123
- Does DAC8PRO need warming-up? no! : #124, #131

- "First-to-try" EKIO Configuration, policy and approach: the simpler, the better: #129
- "Second-to-try" EKIO Configuration trusting EKIO to mimic NS-1000's attenuator settings: #130

- Useful public domain documents and books for understandings on audio crossover: #132-#135

- EKIO uses IIR filters; cascade 2nd order direct form II biquad in 64 bit floating point: #138-#142
- EKIO (using IIR filters) gives audible post-ringing or pre-ringing, or not?: #143

- DAC8PRO's headphone out for RCA unbalanced input to sub-woofer Yamaha YST-SW1000: #162

- Possible use of Yamaha MX-A5200 (class-AB) 11-Ch AV amp; specs etc. #164-#168, #170-#171
- Tests, evaluation and conclusion with Yamaha MX-A5200 (class-AB) 11-Ch AV amp: #175

- Invaluable discussion with Igor Kirkwood who is using Yamaha NS-1000X in his multichannel rig: #179-#189

- AES/EBU Sync connection from DAC8PRO (CH1+CH2) to Onkyo DAC-1000: #190

- Again, where to control master volume? #191-#221

- Completely silent audio (audio-visual) dedicated Windows PCs in this project: #225

- Tests and evaluations of Dentech Hypex NC400 DP-NC400-4-EXP (class-D) multichannel (4-Ch) amplifiers: #228-#230

- Protection capacitors for Be-squawkers, Be-tweeters and metal horn super tweeters: #245

- In depth insights on SP attenuators and their elimination in multichannel system: #248, #251
- Elimination of magnetic susceptible metals in SP signal handling: #250, #013(remote thread)

- How can I test/compare one candidate stereo amplifier in multichannel multi-amplifier project? #249

- Phase discussion with Lbstyling: #254-#257

- Benchmark AHB2 (class-A[H]B)_Part-1_Comparison with ACCUPHASE E-460 in Single-Amplifier + LC-Network full range reference sound system: #253
- Benchmark AHB2 (class-A[H]B)_Part-2_Incorporation in multichannel multi-amplifier system and Listening sessions: #258, #265

- Rotel RB-1582 MkII (class-AB)_Part-1_Comparison with AccuphaseE-460 and Benchmark AHB2 in single-Amplifier + LC-network full range reference sound system: #263
- Rotel RB-1582 MkII (class-AB)_Part-2_Incorporation in multichannel multi-amplifier system and listening Sessions: #264, #265

- Invaluable discussion with tpazadpom on subjective listening impressions on amps: #266, #268
- Coarch_Kaarlo's evaluations on Yamaha NS-2000: #271, #272

- Background and discussions on possible use of class-A amplifier(s) in multichannel multi-amplifier project: #265, #267, #269, #270, #273, #275, #281

- Interesting suggestions from an amplifier engineer in Japan on amplifier exploration: #281

- Accuphase provides repair and maintenance services for any of their past and present products (including my E-460) sold in the past 50 years: #045(remote thread)

- Accuphase A-36 (class-A)_Part-1_In single-amplifier and bi-amplifier + LC-network audio system: #282
- Accuphase A-36 (class-A)_Part-2_In multichannel multi-amplifier audio system: #283

- Possible "Type" of three amplifiers in current multichannel multi-amplifier project: #284

- Teac AX-505 and AP-505 (both class-D)_Part-1_In single-amplifier and bi-amplifier + LC-network audio system: #290
- Teac AX-505 and AP-505 (both class-D)_Part-2_In multichannel multi-amplifier audio system: #291

- Possible three plans for amplifiers in current multichannel multi-amplifier project: #292

- Again, full ASIO I/O with digital XO/EQ software EKIO: #297, #006

- Possibilities of Sony TA-A1ES (quasi class-A) and Yamaha A-S3000 (class-AB) in multichannel multi-amplifier project: #302, #305

- Yamaha A-S3000 (class-AB) and Sony TA-A1ES (quasi class-A)_Part-1_In single-amplifier + LC-network full range audio system: #307
- Yamaha A-S3000 (class-AB) and Sony TA-A1ES (quasi class-A)_Part-2_In In bi-amp + LC-network stereo system together with Accuphase E-460: #308
- Yamaha A-S3000 (class-AB) and Sony TA-A1ES (quasi class-A)_Part-3_In multichannel multi-amplifier stereo system together with Accuphase E460: #309

- (Provisional) Decision on amplifiers selection and photos of the listening environments: #311
- Discussion on rather subjective aspects including "musicality" on amplifier selection: #313-#317

- L+R Frequency response at usual listening position in the listening room and environments: #318-#320, #323-#330
- Frequency response measurements in digital domain/level, in DAC8PRO's analog output level, and in amplifier's output level: #321

- Startup (ignition) sequences and shutdown sequences of multichannel multi-amplifier system: #322, #426

- Interesting and intensive discussions with mikessi and gene_stl mainly on Yamaha NS-1000 and NS-1000M, especially on its still-amazing Be-dome midrange driver: #322-#342

- Introduction to my new thread entitled "Lute Music: Stunning Recordings We Love": #343

- TheBatsEar's nice comments on super tweeters and Yamaha amplifiers: #348-#353

- Info on Danville Signal's dspNexus 2/8 and dspNexus 2/16, 2-in 8-out, 2-in 16-out, new one-box DSP units: #355, #356

- My audio sampler music tracks, updated: #357

- "Near ultrasound - ultrasound" ultra-high frequency (UHF) noises in improperly engineered/processed HiRes music tracks, and EKIO's XO-EQ configuration to cut-off such noises: #362-#386

- New standard EKIO digital crossover configuration with high-cut (low-pass) -48 dB/Oct LR filters at 25 kHz: #386

- Brief discussion and links to the remote review post/thread on Trinnov Altitude 16: #387

- Frequency response measurements by "cumulative pink noise averaging": #388-#390

- Frequency response measurements by "cumulative white noise averaging": #392
- Where in my multichannel multi-driver (multi-way) multi-amplifier stereo system should I measure/check frequency (Fq) Responses? #393

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-1_Fq Responses in EKIO’s digital output level: #394

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-2_Fq Responses in DAC8PRO’s analog output level: #396

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-3_Fq Responses in amplifiers’ SP output level before protection capacitors: #401

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-4_Fq Responses in amplifiers’ SP output level after protection capacitors: #402

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-5_Fq Responses in actual SP room sound at listening position using one measurement microphone: #403

- Frequency (Fq) responses in the completed system measured by using “cumulative white noise averaging method” under the present standard crossover configurations and relative gains_Part-6_Summary, discussions, and a little step forward: #404, #405-#409

- Frequency response in the new (latest) configuration with four amplifiers plus active sub-woofers: #410
- Frequency response measured under subjectively best fine-tuned gain/volume settings with the four amplifiers plus active sub-woofers: #411
- Intensive comparison of high-range sound cleanliness/clearness between Option-3 and Option-4 for driving super-tweeters: #413

- Links to interesting and informative discussions on the two remote threads where I partly participates having my experiences in this multichannel multi-driver (multi-way) multi-amplifier project; What makes speakers "disappear" and can it be measured? and Midrange dome drivers banned? #412

- Updated system diagrams and photos as of August 7, 2021: #416, #636(remote thread)

- Updated startup (ignition) sequences and shutdown sequences of multichannel multi-amplifier system: #426

- Even Greg Timbers uses "reasonable and budget" Pioneer Elite A-20 for compression drivers (super tweeters) in his extraordinary expensive multichannel stereo system with JBL Everest DD67000 which he himself designed and developed: #435

- A serious jazz fanatic friend came to my home for audio sessions using my multichannel multi-driver multi-way multi-amplifier stereo system: #438

- An interesting 8-page web article on Yamaha speakers: #441

- Backside wiring photos of PCs-DACs-amplifiers and also backside photos of SPs: #442, #636(remote thread)


Further hyperlink indexes will be added in this post along with the steady growth of this thread...

Wowow. You are very good at organizing information and details. After you finally get your wish list beryllium driver speakers you're going to be so stoked the information is going to be flowing like water.

 

[dualazmak]

Wowow. You are very good at organizing information and details. After you finally get your wish list beryllium driver speakers you're going to be so stoked the information is going to be flowing like water.

Thank you for your continuing interests on my project thread.
The above hyperlink index is prepared also for my reminder purposes. I accordingly edited/added one paragraph at the top of my very first post.

I am also considering the feasibility and meanings of creating a new thread just showing the same hyperlink index...

I really like the flexibilities, structures, functions, design, and especially the "policy" of this ASR Forum web site!

 

[Doodski]

I really like the flexibilities, structures, functions, design, and especially the "policy" of this ASR Forum web site!

I concur. The selection of the software for ASR is excellent.

 

[dualazmak]

....
I am also considering the feasibility and meanings of creating a new thread just showing the same hyperlink index...
....

For those who may be interested in digital software crossover/EQ within one PC and multi-driver (multi-way) multi-amplifier stereo audio system using fully synchronized multichannel DAC, I created a new thread and post sharing the above Hyperlink Index, expecting convenience for newcomers to ASR Forum and their easier awareness/attention on this thread...

I would highly appreciate hearing any feedback from you without hesitation, including wrong link, typo, better wordings, further additional hyperlink index, etc.

 

[dualazmak]

Just for our reference, interesting information exchange is in progress after this post on this remote thread regarding FOCUSRITE Scarlett 18i20 2nd gen (and 3rd gen) (CS4272 [x4] + CS4392) as well as MOTU UltraLite Mk5 (two ES9026pro); it looks both of them support simultaneous sync 10-channel DAC processes, even though the total sound quality would be a little bit inferior to OKTO DAC8PRO.

 

[Doodski]

As per your commentary here. I quote you>

"I assume not only Sointuba but also Fyne Audio F-701 as well as KEF Q350 could be the candidate in this idea. Do you have any other SP suggestions? (please be careful about the physical alignment; they should sit on my sub-woofers Yamaha YST-SW1000, and the height should be less than ca. 60 cm, preferably less than 50 cm !!).

I will further discuss (and actually pursue?) this idea in my multichannel multi-amplifier stereo project thread; I will soon have a new post there on this idea, and your participation there will be highly appreciated."

That is a big difference in the retail expense between the KEF Q350 and the Fyne Audio F-701. As per the speaker recommendation I do not have a speaker in mind that fits the dimensions that you require, because I am not familiar with the recent speaker models.

 

[dualazmak]

An Interlude/Intermezzo of the thread (even though @Doodski already kindly commented as in above post)

Just thinking about possibility and feasibility of adding a pair of woofer (or a pair of completed SP as woofer) in present multi-channel multi-driver (multi-way) multi-amplifier stereo setup

The idea in this post came to me from our recent intensive audio listening sessions (shared here #438) using my present setup attended by one of my audio enthu friends who is a really serious jazz fanatic; at the end of our 8-hour audio listening session, he said; "Your present setup is really amazing and wonderful as a whole giving best ranked HiFi sound I ever heard. For your beloved classical music, the setup seems to be just perfect, I feel."

Then he continued; "For my beloved jazz music, especially rather authentic and exciting American jazz sessions, however, I would be a little bit happier if the sound by woofers, 50 Hz - 500 Hz, could be very slightly tighter, since I always love sharp drum sound, loud and transient kick drums."

Well, during the past a few months, I have been interested in MARCH AUDIO Sointuva speaker's reported/reviewed "clear, tight, rigid, solid, speedy, fast-transient" bass-low sound given by the three 6.5" (16.5 cm) low-range drivers, Purifi PTT6.5X04-NFA-01, one in the front and two (as passive/drone radiators) in the back panel. For your reference, you would please visit this remote thread on Sointuva where I partly participated.

I am just considering, therefore, possibility of adding pair of Sointuva "as such an excellent woofer" in my present setup (please find the latest setup here/post#416 and here/post#636); Sointuva (as woofer) will be driven by a dedicated amplifier in the clearly crossed-over 50 Hz- 500 Hz Fq range, simultaneously and/or alternatively with Yamaha NS-1000's 30 cm (11.8") cone woofer (JA-3058).

I can continue using the still amazingly excellent (the best ever?) vacuum vapor deposited Yamaha 8.8 cm (3.5") Beryllium midrange dome driver (JA-0801) and the 3 cm (1.8") Yamaha Beryllium tweeter (JA-0513, also vacuum vapor deposited); in my setup, I also have metal horn super tweeters Fostex T925A as well as the big/heavy L&R sub-woofers, Yamaha YST-SW1000 covering 15 Hz - 50 Hz with variable/adjustable gain.

(Of course, it should be a great fun and interests comparing the Yamaha's vapor-deposited Beryllium sound with SATORI TW29BNG-4 Beryllium sound in new Sointuva, though.)

My idea here is that I may use Sointuva (as woofer) and/or Yamaha's 30 cm woofer depending on the nature of the music source, e.g. Sointuva (as woofer) mainly for jazz and pops, Yamaha's 30 cm woofer mainly for classical, and so on.

My still just on-paper (on-computer) physical alignment simulations are as follows;

I also assume not only Sointuva but also FYNE AUDIO F-701 could be another candidate in this idea in terms of its reviewed nice transient bass-low (50 Hz - 500 Hz) sound quality and dimensions;

KEF Q350 may be another choice...

I will further search for this type (and dimensions) of speakers with reviewed and confirmed "nice transient bass-low (50 Hz - 500 Hz) sound quality".

 

[headshake]

I can continue using the still amazingly excellent (the best ever?)

That dome mid is a magical thing. I almost made a 3way with a used JA-801 mid. I still might.

Bliesma should have a new Be mid dome out soon. I am really curious to see how it stacks up to the JA-801.

I will further search for this type (and dimensions) of speakers with reviewed and confirmed

Do you want a complete speaker? Why not just a large woofer?

 

[gene_stl]

@headshake if you decide not to build and you want to sell the JA-801 I would be interested.

@dualazmak I picked up a pair of NS-1000M that were mostly in pretty good condition, but both woofers had suffered epoxy failure on the magnet mountings. After puzzling about getting them repaired (there is a company here in the USA which can do this correctly, including remagnetizing the magnets Hempomopotamus where the name refers to Hemp fiber woofer cones they make https://www.facebook.com/kaptainhempo ) I decided that since I prefer to triamp them , I will replace the 12 inch driver with a 10 inch and cross it over at 1000 Hz which should lower the distortion on the JA 801 considerably. I expect to use an RCF L10 series driver made in Italy.

 

[dualazmak]

Hello gene,

As you know, we have several craftsman SP repair/restore garage factories in Japan, some of them are really specialized on Yamaha SPs. It is very nice hearing you could find a similar factory in the US! I am looking forward to hearing your progress with your renovated NS-1000M.

I am also searching a pair of NS-1000x in good condition especially the carbon fiber woofers; of course the Be-midrange domes and Be-tweeters would be nice back-up ones for my NS-1000...

 

[dualazmak]

...
...
Do you want a complete speaker? Why not just a large woofer?

Hello headshake,

My NS-1000's 30 cm (11.8") woofers are still in very good condition, and they are perfectly fine for my classical music libraries.

As I wrote in my above post #451, I would like to have another woofers (or SP units as woofers) mainly for jazz and pops listening occasions, and such woofers should have "fast and vivid response" in 50 Hz - 500 Hz. I assume and believe that modern woofers (or well designed SP units) of 6.5" (16.5 cm) or 8.0" ( 20 cm) would be nice choice in this case, better than large 11.8" ones.

I am currently using nice and powerful Yamaha A-S3000 integrated amp directly driving 30 cm (11.8") woofers in 50 Hz - 500 Hz, and the AS-3000 has SP-A and SP-B outputs; I can easily switch to hear SP-A, SP-B, or even SP-A+SP-B!

You would please refer to my latest setup shared here and here.

Another factor in my concern on complete SPs would be the aesthetic element; I always need consensus and approval from our strict chief interior coordinator, my wife.

 

[gene_stl]

Lately there have been a lot of Yamaha speaker restoration videos appearing on you tube. Either Russian or Japanese people working on them with narration and subtitles in the respective languages.

 

[dualazmak]

Lately there have been a lot of Yamaha speaker restoration videos appearing on you tube. Either Russian or Japanese people working on them with narration and subtitles in the respective languages.

Yes, I am aware of them, and enjoy watching. I am very happy that (at least here in Japan) we have so many craftsmen for repair and restoration for Yamaha SPs!

 

[gene_stl]

There is an emergency room physician whose ebay handle is "magicmarksy" who repairs Yamaha and other speakers.
He is in Clarksville Tennessee. Unlike some of the aforementioned, he does not make videos showing how he does things. I think he prefers to keep his techniques as "trade secrets".

https://www.ebay.com/sch/i.html?_sofindtype=0&_byseller=1&_nkw=&_in_kw=1&_ex_kw=&_sacat=0&_udlo=&_udhi=&_ftrt=901&_ftrv=1&_sabdlo=&_sabdhi=&_samilow=&_samihi=&_sadis=15&_stpos=63141-7448&_sargn=-1%26saslc%3D1&_salic=1&_fss=1&_fsradio=%26LH_SpecificSeller%3D1&_saslop=1&_sasl=magicmarksy&_sop=12&_dmd=1&_ipg=50&_fosrp=1

 

[dualazmak]

As a follow-up of my above posts #451 and #455;

AMPHION Argon3S would be another choice "as compact and vivid woofer" covering 50 Hz - 500Hz; it has one 6.5" passive radiator in back panel.

In this case, the physical allignment simulations are;

and

I found fairly positive review article here, in Japanese though. Amphis already assigned official sole representative dealer in Japan.

I would highly appreciate hearing owner's subjective impression (and/or objective data) on AMPHION Argon3S, especially the bass-loe sound in 50 Hz - 500 Hz Fq zone.

Edit:
I could just find this review article giving subjective impression and objective data on AMPHION Argon3S.

 

[Doodski]

As a follow-up of my above posts #451 and #455;

AMPHION Argon3S would be another choice "as compact and vivid woofer" covering 50 Hz - 500Hz; it has one 6.5" passive radiator in back panel.

View attachment 165607

In this case, the physical allignment simulations are;
View attachment 165608
and
View attachment 165609
I found fairly positive review article here, in Japanese though. Amphis already assigned official sole representative dealer in Japan.

I would highly appreciate hearing owner's subjective impression (and/or objective data) on AMPHION Argon3S, especially the bass-loe sound in 50 Hz - 500 Hz Fq zone.

Edit:
I could just find this review article giving subjective impression and objective data on AMPHION Argon3S.

It seems the low frequency drops @100Hz. Is that about average for the speakers you have been looking at?