Amp/Preamp Asylum

RE: BiAmp Noodle

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This Post Has Been Edited by the Author

In Reply to: RE: BiAmp Noodle posted by pictureguy on June 07, 2017 at 23:05:21

MiniDSP 2 x 4 is what I used, based on price and capability. The tweeter amp is a TPA3116D2-based amp I bought off eBay. 8 volt transformer feeds the +5 V regulator for the digital stuff.
I can't remember what voltage the TPA3116D2 amp runs off, on the block diagram I sketched I put 22 VDC but I can't recall, maybe it's 18 VDC.
I replaced the stock output coupling electrolytics of the Mini-DSP with some film caps I just happened to have on hand, mounted outboard there as you can see. Not sure this makes it sound any better but I had them on hand....
This was built for a bedroom system. Using the Dell tablet running Squeezeplay, I can control playback audio track selection and volume from a web browser on any device in my apartment, like an Android tablet I use in bed. I have 60,000 FLAC files of music on a Mogitech Media Server setup, and of course one can also listen to various streaming Internet "radio stations" - I particularly like Soma FM's 256k Groove Salad stream.
I can also take the Dell tablet and the chassis over into my workshop and use it to measure / biamp / EQ other 2-way speakers I might make.
So far I have built two speakers for these electronics:
Satori 6.5", ported, with Bozhen tweeter
and
Scanspeak 7" Revelator sealed with Bozhen tweeter
Both use 0.75 cu. ft. enclosures.

Edits: 06/08/17 06/08/17 06/08/17 06/08/17

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