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Compression drivers?
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mightycicadalord
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I've got two dayton pa380s sitting around, wouldn't mind doing a 2 way, suck at making passive xovers. Looking to see what cd's are all about. Any ideas?
OP
DanielT
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Regarding which compression driver that can fit with your Dayton pa380. Those who have more experience and knowledge can tip and give you advice about that.
But here you can at least see different models, in many different price ranges:Home
Browse our comprehensive selection of compression drivers. Pair up with a horn or waveguide to fulfill your high-powered midrange or high-frequency live audio needs.
www.parts-express.com
Then this is probably partly due to what suits your Dayton pa380 plus your taste, how you want it to sound:
Select dispersion pattern
Which dispersion pattern had you chosen? If we play with the idea that you would use a waveguide. Choose vertical and horizontal dispersion and feel free to justify your choice. For inspiration here you can see different waveguides...
audiosciencereview.com
If you go ahead and build something, feel free to create a thread on the DIY section here at ASR. It will be fun to follow. Good luck! .... And have fun!
Edit:
I guess 24 dB crossover filter max up to hm..1300 Hz with your Dayton pa380? FR Dayton pa380:
I had used miniDSP or an active crossover, for example:
LD Systems X 223 | Audio-Tools & - Sources | LD Systems
The LD Systems X223 is a stereo 2 way / mono 3 way crossover in standard 19"/1U rack format. Its rugged construction, high quality and robust knobs as well as the integrated power unit are rarities in this price range. It provides a mono...
With miniDSP you get opportunities for crossover but also opportunities for EQ and it is always good to have. EQ that is.
So I avoided expensive inflexible passive 24 dB filter.
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Waveguides that are good down to 1KHz are hard to come by right now, at least for 1" throat compression drivers, and those are best for a two-way without too much breakup in the high frequencies. At least, if you are not budgeting for a beryllium diaphragm. If it were not for availability issues, I'd be looking at a QSC waveguide as used in the larger econowaves, or a DIYSG SEOS-15 waveguide. Both unobtainium right now, as far as I know. Maybe a JBL waveguide:
reconingspeakers.com
with a PRV Audio D290Py-S compression driver:
But 1300 Hz is pushing it with that waveguide, and with that woofer, 1 KHz would be better. Easier with a Mini-dsp than with a passive, but you can look through the enormous Econowave threads for passive crossover hints:
JBL 338800-001 Replacement Horn Lens
Brand New Genuine JBL Replacement Screw-on Horn Lens #338800-001. Used in JRX100 Series, JRX200 Series, PRX600 Series, Sound Factor Series. Used in the following models: JRX112M, JRX112MI, JRX115, JRX115I, JRX125, JRX212, JRX215, JRX225, SF12M, SF12MI, SF15, SF15I, SF25, PRX612M, PRX615M...
reconingspeakers.com
with a PRV Audio D290Py-S compression driver:
Home
PRV Audio D290Py-S 1" Polyimide Horn Compression Driver 8 Ohm 1-3/8"-18 TPIPRV Audio's top-of-the-line D290Py-S polyimide 1" screw-on compression horn driver is designed to offer unsurpassed natural upper midrange and high frequency response, with accuracy not found in most manufacturer's stock...
www.parts-express.com
But 1300 Hz is pushing it with that waveguide, and with that woofer, 1 KHz would be better. Easier with a Mini-dsp than with a passive, but you can look through the enormous Econowave threads for passive crossover hints:
Zilch's AK Design Collaborative - Econowave Speaker
******** Project Summary: http://audiokarma.org/forums/showthread.php?p=1856214#post1856214 Member Projects and Acknowledgments: http://audiokarma.org/forums/showthread.php?p=2260584#post2260584 Member Listening Impressions...
audiokarma.org
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Want a second or third opinion about your speaker cabinet design or other audio related problem? Post your question or comment on the Technical Discussion Board. Hundreds of technicians, engineers, and hobbyists, nationwide read and discuss electronics related questions each week. We welcome...
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mightycicadalord
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Perhaps I am better off utilizing the 15" woofers for something else. I was aware it would be tough and probably costly to find a waveguide and CD to meet it. Perhaps two subs to sit below some 10-12" econowaves?
OP
DanielT
Major Contributor
- Thread Starter
- #146
Maybe ... hm this together with your Dayton pa380?
Note, IF they fit together, dispersion and so on.
It is not a compression driver per se.
BOHLENDER GRAEBENER NEO8 Speaker Driver Ribbon Tweeter 50W 4 Ohm - Audiophonics
bohlender graebener neo8 planar transducer The neo8 which has a push-pull magnet neodymium was designed with the help of the software finite element analysis to ensure the maximum efficiency. there is no heavy coil, no spiders, no jo
Or, I think these are copies of BG NEO8, but check with those who build with similar, or them. They are not expensive. Can maybe be a fun low budget project?
Home
Bohlender Graebener Neo8 Planar TransducerThe Neo8 features a push-pull magnet system that has been designed with the help of Finite Element Analysis software to achieve optimum efficiency/cost performance. There are no heavy voice coils, spiders, glue joints, paper cones and surrounds. Hence...
www.parts-express.com
He makes sweeps, measures frequency response in the video. With BG NEO8 in different configurations:
If you can now have such a big horn in your listening room? But that's another question. Drawings on that horn I think I saw somewhere, hm if I remember correctly. Otherwise, others can probably tell you about that? .
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mightycicadalord
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What about using the Dayton H812? Seems it offers pretty low freq loading and someone has good results with it and the 220ti? I think it might be able to meet the 15?
Has
Too bad Michael Chua does not test off-axis, although with all the testing he does it would be a time-sink. The question is, what frequency does it have pattern control down to? Also, I do not think the H812 is a CD horn, if that is important to you.
From data sheets, not personal experience, I suspect the PRV Py290-B would be better than the Selenium 220ti to try to get down to 1 KHz.
Maybe:
Too bad Michael Chua does not test off-axis, although with all the testing he does it would be a time-sink. The question is, what frequency does it have pattern control down to? Also, I do not think the H812 is a CD horn, if that is important to you.
From data sheets, not personal experience, I suspect the PRV Py290-B would be better than the Selenium 220ti to try to get down to 1 KHz.
This driver looks interesting to me for replacement of a Tangband fullrange in OB from about 500 hz up, supported by two 15” OB woofers. It tested well by Joseph Crowe (with his horns). SB offers an inexpensive low cutoff horn.
Vineeth Kumar V
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TheSB Audience Rosso 65CDN-T driver is a great driver in my experience. As the first configuration in a modular 3 way speaker build I have used it. I'm still in the process of setting up the overall system. But are some pics and measurements I got till now.This driver looks interesting to me for replacement of a Tangband fullrange in OB from about 500 hz up, supported by two 15” OB woofers. It tested well by Joseph Crowe (with his horns). SB offers an inexpensive low cutoff horn.
The speakers
Bass module uses 2 Satori WO24P-8 woofers per side and Sb Audience Rosso65CDNT on Faitalpro LTH142 horn (since I just got hands on this horn first. I am in the process of making other horns for the driver)
Taking measurements
Top woofer horizontal polar
Woofer nearfield
Rosso65CDNT on LTH142 horn with a 150uF capacitor in series with the driver
First prototype crossover for evaluation
Crossover is implemented in Equalizer Apo on PC and uses my 6 channel ESI audio interface for dacs
System Response details
Vertical polars above maybe slightly wrong since I didn't take vertical polar measurements and the above pic assumes the horizontal and vertical polara of the drivers (+horn) is the same in both horizontal and vertical planes.
More work regarding measurements and refining the crososver and making the system 2.5 way instead of current 2 way configuration is in progress (along with a proper mounting method for the compression driver on top of the cabinet
)
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Thanks for showing your data.
I would like to hear more about your intent to make new horns for these…that’s what I am thinking too. I would actually like to make the exit flare carved into a live edge plank.
I would like to hear more about your intent to make new horns for these…that’s what I am thinking too. I would actually like to make the exit flare carved into a live edge plank.
Vineeth Kumar V
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Hi,
I am going to 3D print horns for free standing configuration generated using ATH software from below site
Newman
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If it is not a measurement error, that horizontal beamwidth of the horn is extraordinarily narrow.
Vineeth Kumar V
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Yes it is narrow beamwidth horn. One of the reasons why I will be changing to a new horn and will be using other rop modules with the woofer module. I just used this horn since I had it lying around and wanted to get a system up and running first.
Oh my, just googled to find out b52 waveguide no longer available on PE.
No QSC no B52 no SEOS...
3d printing Ath seems to be the best option but not the cheap one...
Hard times for 1" while JBL waveguides are easily reachable to 1.5"s.
BTW I'm currently using 2544r with b52 and 128h in my room(w/subwoofers). They sounds amazing...
I have some exotic horns and domes with me but simple and cheap econowave they sing better than just good enough.
It would be a fun DIY project for anybody interested to 3d print standalone Ath horn and build simple woofer box along with 2, 4 subwoofers.
4, 6 mdf boxes and you're ready to hear the best of hi-fi!
(Well, to be honest long and not easy time for sound treatment and DSPing waits ahead but still, econowave is more than just economic.)
edit: added room fr measurements for three system.
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I mated the B-52 PHRN 1014 Dayton Horn and B&C DE250 with the 15 inch Deltalite 2 Neo 2515 using Audiolense for digital filters, everything in the chain is a measured device on ASR. Unfortunately, I haven't and still struggling to measure to understand the best crossover, for now I have it 900hz really keen to know if anyone has more information on the best crosssover for controlled dispersion for these two drivers?
I also have a standard wide dispersion 3 way which sounds great but nothing comes close to the satisfaction of a 15 inch with a compression driver. Its really difficult to tell what material sound better on which system but no doubt when playing live recordings or techno the 15 inchers shine.
I also have a standard wide dispersion 3 way which sounds great but nothing comes close to the satisfaction of a 15 inch with a compression driver. Its really difficult to tell what material sound better on which system but no doubt when playing live recordings or techno the 15 inchers shine.
Can you provide a link?
Tom Danley’s Mic Recordings https://www.danleysoundlabs.com/tom-danleys-mic-recordings/ - not for one liter speakers.
dasdoing
Major Contributor
I think it was this one?
you might prefer downloading Bob Katz's recording(s) of a Space SHuttle launch (have to register though)
We Have Lift-Off (Now in Surround) - Digido.com
Digital Domain - we ensure musicians, independent artists and record labels get the best sound possible. Bob Katz provides the best in mastering and mixing.
www.digido.com
Daniel, theese are the foundation of a great two way "horn" speaker. Top them off with a CD horn of decent quality and you are GOLDEN!
hifitorget.se
JBL 2216nd
Säljer ett par av dessa i fint skick. Köpta nya av mig från USA och sparsamt använda. Skickas helst inte.
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