Search found 37 matches

by Bruno2000
Tue Jul 28, 2009 2:57 pm
Forum: Pro Audio Design
Topic: Using the THAT1646 As A Transistor Pre-Driver/Headphone Amp
Replies: 80
Views: 288052

Re: Using the THAT1646 As A Transistor Pre-Driver/Headphone Amp

Are these boards available? Will they run off of +&- 9V? I want a couple!
Brno2000
by Bruno2000
Thu Jul 16, 2009 9:27 am
Forum: Build
Topic: Pico II 12 Pack completed (finally)
Replies: 10
Views: 27358

Re: Pico II 12 Pack completed (finally)

The mods started when I wanted to sub in some 250k pots that I bought from a distributor for almost nothing for the gain and threshold controls. My app is tracking comps for live vocals, so I wanted to optimize for that. When I record, vocals usually get 2 tracks each, one right out of the mic pre /...
by Bruno2000
Wed Jul 15, 2009 5:11 pm
Forum: Build
Topic: Pico II 12 Pack completed (finally)
Replies: 10
Views: 27358

Re: Pico II 12 Pack completed (finally)

It's a 5 space, and it's so tight that I had to notch the top plate to clear the meter standoffs. Rack space is at a premium in a Remote Truck.
by Bruno2000
Wed Jul 15, 2009 1:14 pm
Forum: Build
Topic: Pico II 12 Pack completed (finally)
Replies: 10
Views: 27358

Re: Pico II 12 Pack completed (finally)

Thanks! I have been using the pair that I built as prototypes for a couple on months now. We've been using them extensively in the studio for voice recordings, spoken as well as sung, and did a lot of listening tests in the Remote Truck. I couldn't be happier with their performance. Best, Bruno2000
by Bruno2000
Wed Jul 15, 2009 9:39 am
Forum: Build
Topic: Pico II 12 Pack completed (finally)
Replies: 10
Views: 27358

Pico II 12 Pack completed (finally)

At long last, the Pico II 12 Pack is finished. These are Roger’s Pico boards, slightly modified, and my meter boards. These are going in the Remote Truck this weekend, and are going to be used exclusively for vocals. The meters read peak input on the left and GR on the right. The peak circuit is pre...
by Bruno2000
Mon Jul 06, 2009 9:30 am
Forum: Pro Audio Design
Topic: Compressor Attack Release Signature Comparisons
Replies: 4
Views: 12556

Compressor Attack Release Signature Comparisons

I did some tests comparing the Attack and Release signatures of some of the compressors that we have that are favorites for voice. Here's the info on these tests: The test tone was generated by an Audio Precision System One, and recorded to Pro Tools at 96kHz through a 192 interface. 0 crossing for ...
by Bruno2000
Wed Jun 03, 2009 3:07 pm
Forum: Pro Audio Design
Topic: New Op-Amps in stock
Replies: 4
Views: 7427

Re: New Op-Amps in stock

Thanks guys, I just ordered a bunch for the "Wayne's Mic Pre" project!
Bruno2000
by Bruno2000
Wed Jun 03, 2009 11:02 am
Forum: Pro Audio Design
Topic: New Op-Amps in stock
Replies: 4
Views: 7427

Re: New Op-Amps in stock

Would those relays be good for a mic level signal for use in a pad?
Thanks!
Bruno2000
by Bruno2000
Thu May 07, 2009 2:37 pm
Forum: Pro Audio Design
Topic: Old: A Direct-Coupled Input-Capacitorless Active Mic Preamp
Replies: 212
Views: 316827

Re: A Direct-Coupled Input-Capacitorless Active Mic Preamp

What happens (don’t laugh/cry, this really does happen) when someone plugs an un-balanced device into the servo’s input with the phantom power on, thus grounding the – servo input?
by Bruno2000
Thu May 07, 2009 12:12 pm
Forum: Pro Audio Design
Topic: Old: A Direct-Coupled Input-Capacitorless Active Mic Preamp
Replies: 212
Views: 316827

Re: A Direct-Coupled Input-Capacitorless Active Mic Preamp

OK, here’s what I measured, although unexpected: AT 4033 serial 39XX DCR=~740K offset=6.8mV AT 4033 serial 90XX DCR=20K offset=0.3mV AT 4033 serial 95XX DCR=22K offset=0.7mV TLM103#1 DCR=9K5 offset=0.8mV TLM103#2 DCR=9K4 offset=0.9mv Schoeps CMC5 body DCR>2M offset=15.7mV (wow, checked it 3 times) T...