Search found 56 matches

by weroflu
Sat Apr 29, 2017 12:32 am
Forum: Pro Audio Design
Topic: That1580 mini mixer
Replies: 105
Views: 323588

Re: That1580/1510 mini mixer

frequency.jpg
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Android phone stereo signal generator out, right channel phase inverted, in to preamp card, usb adc interface/audacity, 20hz -20khz sweep

https://instaud.io/Urp
by weroflu
Fri Apr 28, 2017 9:09 am
Forum: Pro Audio Design
Topic: That1580 mini mixer
Replies: 105
Views: 323588

Re: That1580/1510 mini mixer

No headohone amp planned re: cmos switches, I thought about those for phantom, pan and phase as was intended from the 5171 designers but I don't know what ground noise problems await so I went for analog. Plus, the intended use for this box is set and forget, set gain, pan, phantom and use it to rec...
by weroflu
Tue Apr 25, 2017 5:34 am
Forum: Pro Audio Design
Topic: That1580 mini mixer
Replies: 105
Views: 323588

Re: That1580/1510 mini mixer

For simple LCR switching I think you can come up with something simpler. The only ideas I came up with are a dual op amp with discrete resistors as in 1206/8273, or 4 resistors off of the sp3t switch, two center resistors adjusted to whatever pan law I want. The latter foregoes a buffer amp but I t...
by weroflu
Fri Apr 21, 2017 11:04 am
Forum: Pro Audio Design
Topic: That1580 mini mixer
Replies: 105
Views: 323588

Re: That1580/1510 mini mixer

I think there was a miscommunication on my part. I have two 1580 preamp cards soldered. The first one was not passing signal, or maybe extremely weak. I could not find the problem so I decided to try soldering the second one, which is working but has the possible low bass problems (Im not even sure ...
by weroflu
Fri Apr 21, 2017 1:59 am
Forum: Pro Audio Design
Topic: That1580 mini mixer
Replies: 105
Views: 323588

Re: That1580/1510 mini mixer

Ok, I think the priority now is to pass a good signal on the 1580/5171 preamp circuit. Thank you very much for taking the time to look into these problems, it is very much appreciated. Re: THAT1206 vs. 1246, is it correct that even though there is no advantage there is also no disadvantage to using ...
by weroflu
Thu Apr 20, 2017 2:46 am
Forum: Pro Audio Design
Topic: That1580 mini mixer
Replies: 105
Views: 323588

That1580 mini mixer

Hello: I have been noobing on a diy 6x2 THAT1580/1510 mini altoids tin sized mini mixer. I'm not sure whether to split this up into two threads since I keep waffling between which one I want to finish. specs: -fit everything into altoids tin -6 mic preamps/ 3.5mm jacks -stereo summing, unbalanced ou...