Madslide
Member
- Joined
- Feb 18, 2022
- Messages
- 30
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- 16
Dear all,
After hours of reading on the web and especially on the ASR forum, I’m finally decided to start designing my first DIY speakers.
Initially I wanted to start with a tower speakers but I reconsidered my plan by first trying to take experiance first with a 2 Way Bookshelf speaker.
This project will be not very original as I want to make an inspired version of the Buschardt audio S400.
In that regard, I was planning to use :
-SB17NBAC for the woofer ;
-SB26STAC for the tweeter with a 3D printed wave guide ;
-SB15SFCR for the passive radiator.
The woofer SB17NBAC as an Sd of 118cm² and a Xmax of 7.17mm (so 84.6cm^3 of displaced volume)
The passive radiator as a Sd of 178cm² and à Xmax of 11mm (so 195.8cm^3 of displaced volume)
So the passive radiator can displaced 2.3 time the air volume of the woofer which looks in the rules.
I was planning to use a 18L box and tried to simulate that in WinISD and it look like I could obtain a 50hz low at -3db.
So first, what do you think of this driver selection ?
Then come the hard part for me as I have no skills in crossover design and I know it have a huge rôle in the final result (I only know how to read a crossover schematic and good at welding components)
By looking at the frequency response of the drivers, I was thinking of using a crossover point somwhere beetween 1500 and 1800hz.
This leads me to ask you few questions :
-How do you select the nominal speakers impedance as the woofer is available in 4 and 8 ohm ?
-Does a generic crossover always lead to a bad result ?
-Is there any active crossover module that can be used with numerical output for 2 FDA « budget » amplifier ? ;
-Othrewise, where to start from and which software do you recommand for passive crossover design ? (Go back to school is an acceptable answer ;-) ;
I also plan to order a UMIK-1 as I know it will be necessary to adjust parameters in every cases.
Thanks !
After hours of reading on the web and especially on the ASR forum, I’m finally decided to start designing my first DIY speakers.
Initially I wanted to start with a tower speakers but I reconsidered my plan by first trying to take experiance first with a 2 Way Bookshelf speaker.
This project will be not very original as I want to make an inspired version of the Buschardt audio S400.
In that regard, I was planning to use :
-SB17NBAC for the woofer ;
Speaker SB Acoustics SB17NBAC35-4, impedance 4 ohm, 6 inch
en.toutlehautparleur.com
Dome tweeter SB Acoustics SB26STAC-C000-4, impedance 4 ohm, voice coil 26 mm
en.toutlehautparleur.com
Speaker passif SB Acoustics SB15SFCR-00, 5 x 8 inch
en.toutlehautparleur.com
The woofer SB17NBAC as an Sd of 118cm² and a Xmax of 7.17mm (so 84.6cm^3 of displaced volume)
The passive radiator as a Sd of 178cm² and à Xmax of 11mm (so 195.8cm^3 of displaced volume)
So the passive radiator can displaced 2.3 time the air volume of the woofer which looks in the rules.
I was planning to use a 18L box and tried to simulate that in WinISD and it look like I could obtain a 50hz low at -3db.
So first, what do you think of this driver selection ?
Then come the hard part for me as I have no skills in crossover design and I know it have a huge rôle in the final result (I only know how to read a crossover schematic and good at welding components)
By looking at the frequency response of the drivers, I was thinking of using a crossover point somwhere beetween 1500 and 1800hz.
This leads me to ask you few questions :
-How do you select the nominal speakers impedance as the woofer is available in 4 and 8 ohm ?
-Does a generic crossover always lead to a bad result ?
-Is there any active crossover module that can be used with numerical output for 2 FDA « budget » amplifier ? ;
-Othrewise, where to start from and which software do you recommand for passive crossover design ? (Go back to school is an acceptable answer ;-) ;
I also plan to order a UMIK-1 as I know it will be necessary to adjust parameters in every cases.
Thanks !
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