Hello
I am getting ready to build a o15tb. I've purchased the dayton plate amp as suggested by bill in the forums. Now I would like to know what changes I should make to the crossovers in order to use the 2 separate channels on the amp. Thanks in advance!
Kind regards
Tjebbe
Omni15TB with Dayton Audio PPA800DSP 2-Way Plate amp
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Bill Fitzmaurice
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Re: Omni15TB with Dayton Audio PPA800DSP 2-Way Plate amp
The amp's lowest crossover is 1kHz, the crossover to the midrange is at 400Hz, so you can't use the high frequency amp for the midrange, only for the tweeter. The .45mH coil and 5.6uF capacitor are eliminated from the midrange filter. The high pass filter for the tweeter is eliminated, replaced by a 10uF capacitor. The crossover frequency to the tweeter is 2.5kHz, so that's what you use as the DSP setting.
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Bruce Weldy
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Re: Omni15TB with Dayton Audio PPA800DSP 2-Way Plate amp
The most important thing to know about that amp is that the high amp section has a built-in 1khz highpass.Shenk92 wrote: ↑Fri Apr 23, 2021 6:14 am Hello
I am getting ready to build a o15tb. I've purchased the dayton plate amp as suggested by bill in the forums. Now I would like to know what changes I should make to the crossovers in order to use the 2 separate channels on the amp. Thanks in advance!
Kind regards
Tjebbe
I can't find any info in the crossover section of the plans about where the different drivers crossover, but I'm sure the only use for the high end of the amp will be the tweeter - regardless of whichever one you chose. You'll still have to build the lowpass and the bandpass.
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
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Bruce Weldy
- Posts: 8241
- Joined: Fri Nov 27, 2009 11:37 am
- Location: New Braunfels, TX
Re: Omni15TB with Dayton Audio PPA800DSP 2-Way Plate amp
Dang it.....Bill answered while I was typing....Bruce Weldy wrote: ↑Fri Apr 23, 2021 7:35 amThe most important thing to know about that amp is that the high amp section has a built-in 1khz highpass.Shenk92 wrote: ↑Fri Apr 23, 2021 6:14 am Hello
I am getting ready to build a o15tb. I've purchased the dayton plate amp as suggested by bill in the forums. Now I would like to know what changes I should make to the crossovers in order to use the 2 separate channels on the amp. Thanks in advance!
Kind regards
Tjebbe
I can't find any info in the crossover section of the plans about where the different drivers crossover, but I'm sure the only use for the high end of the amp will be the tweeter - regardless of whichever one you chose. You'll still have to build the lowpass and the bandpass.
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
-
Bill Fitzmaurice
- Site Admin
- Posts: 28507
- Joined: Tue May 02, 2006 5:59 pm
-
Bruce Weldy
- Posts: 8241
- Joined: Fri Nov 27, 2009 11:37 am
- Location: New Braunfels, TX
Re: Omni15TB with Dayton Audio PPA800DSP 2-Way Plate amp
Actually, I had to go look at the plans first to make sure I didn't say something wrong......wouldn't want another crossover fiasco on my hands.
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."