I noticed that QSC is producing a line of 2 or 4 channel compact (half rack) sized Class-D amps. Info:
I scoured the spec sheets but I could not find any mention of distortion at any level. This has me concerned that spec is not very impressive. Maybe these amps are intended for commercial use where that is not a critical parameter?
Since I like to build active speakers, half-rack sized power amps are of interest because they could easily be incorporated into or placed on the speaker itself while remaining unobtrusive. An example of this is the Parasound Zamp. There are also some compact, modern 2-channel class-D amps from various Asian sellers, but I have not found them to have a very good looking distortion profile. There are mono amps like the Emotiva PA-1, but that is not really what I am looking for. Feel free to point out products that might work in this application.
Code:
Models:
SPA2-60 SPA4-60 SPA2-200 SPA4-100
Stereo Mode Power:
8 Ω 60 W 60 W 200 W 100 W
4 Ω 60 W 60 W 200 W 100 W
Bridged Mode Power into 8 Ω & 4 Ω:
200 W 100 W cont. 400 W 200 WSince I like to build active speakers, half-rack sized power amps are of interest because they could easily be incorporated into or placed on the speaker itself while remaining unobtrusive. An example of this is the Parasound Zamp. There are also some compact, modern 2-channel class-D amps from various Asian sellers, but I have not found them to have a very good looking distortion profile. There are mono amps like the Emotiva PA-1, but that is not really what I am looking for. Feel free to point out products that might work in this application.
I do not know these, but their AB-amps from 1 or 2 decades ago massively failed (electrolytics) and the innards did not look impressive to me.
You could get some Purifi modules with their eval board and some hypex supplies and build them in the speakers. Performance should be outstanding and you won't have to pay for the cases. And if the eval board is not to your taste you can get some of these: Purifi 1ET400A / Hypex NC500 Input Buffer for any number of channel combinations.