Help a beginner create an active bi-amp setup

[Reigningchamp]

Hello everyone,

I'm very new to the diy amplifier scene, but I have been building speakers for some time now, and for my new project I decided to go with a bi-amp setup to make use of a x4 DSP (probably a minidsp). So after stumbling across the class d forums i've decided to go about making my own. I figured i would ask your help in designing my first amp as i'm struggling to make some decisions. Im looking to end up with clean power between 25-50 watts per speaker (TM bookshelves in a smallish room). My current choices are either two Sure TPA3116 two Sure TDA7492 or four Sure TA2024 (can i even run these mono?). If anyone would like to offer suggestions and opinions on these boards or any others as well as power supplies, please, your help is much appreciated! Also, on a side note, how would I go aboout controling multiple boards with a digital knob as well as an ir receiver?

Thanks!

 

[gwingn]

Hello everyone,

I'm very new to the diy amplifier scene, but I have been building speakers for some time now, and for my new project I decided to go with a bi-amp setup to make use of a x4 DSP (probably a minidsp). So after stumbling across the class d forums i've decided to go about making my own. I figured i would ask your help in designing my first amp as i'm struggling to make some decisions. Im looking to end up with clean power between 25-50 watts per speaker (TM bookshelves in a smallish room). My current choices are either two Sure TPA3116 two Sure TDA7492 or four Sure TA2024 (can i even run these mono?). If anyone would like to offer suggestions and opinions on these boards or any others as well as power supplies, please, your help is much appreciated! Also, on a side note, how would I go aboout controling multiple boards with a digital knob as well as an ir receiver?

Thanks!

Hi,

I won't offer an opinion on the amp boards except to say there is a huge thread on the TPA3116 boards which is worth reading and has many opinions within it!

For power supplies I'd suggest looking at the 'Connexelectronics' site for a range of good performance supplies with many voltage/capacity options according to the amps you end up choosing. Meanwell supplies are also pretty much a standard recommendation as well, are generally cheaper, and available everywhere.

For volume control of standard amp modules I'd suggest it's much simpler not trying to control the individual amps but instead set them to the minimum gain necessary for your desired output volume then control volume at your source or dsp. If you go the minidsp route you would use their Vol-FP add-on board to do this.

Good luck,
Rob

 

[Reigningchamp]

Hi,



I won't offer an opinion on the amp boards except to say there is a huge thread on the TPA3116 boards which is worth reading and has many opinions within it!



For power supplies I'd suggest looking at the 'Connexelectronics' site for a range of good performance supplies with many voltage/capacity options according to the amps you end up choosing. Meanwell supplies are also pretty much a standard recommendation as well, are generally cheaper, and available everywhere.



For volume control of standard amp modules I'd suggest it's much simpler not trying to control the individual amps but instead set them to the minimum gain necessary for your desired output volume then control volume at your source or dsp. If you go the minidsp route you would use their Vol-FP add-on board to do this.



Good luck,

Rob

Thanks for the advice Rob, i'll look into some more power supplies and check out some of the pre-existing threads on these specific chips.