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In Reply to: RE: BiAmp Noodle posted by pictureguy on May 26, 2017 at 17:19:20
I built a similar thing ; that's the front panel. Anodized aluminum, bloodwood trim, and the knob is ground from red tigers-eye stone, with a small (man made) ruby set into the aluminum knob base as the knob pointer.
Here's the insides
Here's the speaker that I use with this
Satori 6.5" midwoofer in ported 0.75 cu. ft. enclosure with Bozhen ribbon tweeter
ONE amp for both speakers?
I see 2x of the TP60 amps and another amp marked 'tweeter'.
What MiniDSP did you use and why? Was it the quietest of simply the right feature set?
I'd like to see your block diagram.
The 8 volt transformer is for Mini power? I see the 24v section for tweeter power.
Too much is never enough
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 Logitech 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
Scanspeak 7" Revelator sealed with Bozhen tweeter
Both use 0.75 cu. ft. enclosures.
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