Search found 664 matches

by Gold
Sat Jan 16, 2021 6:22 pm
Forum: Build
Topic: Mid Side M-S Matrix Construction Information
Replies: 121
Views: 354435

Re: Mid Side M-S Matrix Construction Information

Nice! Did you CNC those dimples with one of your tools or did you have someone else do it? Do you mean the marks? That is all hand done. I had templates made for the dots and used hand stamps for the text. http://www.saltmastering.com/Console/FaceplateFab_Stamp-8.JPG http://www.saltmastering.com/Co...
by Gold
Sat Jan 16, 2021 2:59 pm
Forum: Build
Topic: Mid Side M-S Matrix Construction Information
Replies: 121
Views: 354435

Re: Mid Side M-S Matrix Construction Information

Here is one of the two units four channel Barry Porter EQ builds. It is M/S only using the first generation M/S boards. It's not totally the fine build but I have it installed in the console now. I had a chemical mishap with some aluminum brightener that damaged four of the eight boards. This unit u...
by Gold
Tue Jan 05, 2021 2:46 pm
Forum: Test, Measurement and Repair
Topic: Which Audio Analyser?
Replies: 22
Views: 58550

Re: Which Audio Analyser?

Since there was talk of analyzers in the Cohen/Transamp thread I thought I'd update this thread. I've given up on using the iPad/iOS. There just isn't much available. I got a Microsoft Surface Pro3 used and I'm liking Windows 10 with touchscreen. Most of the analyzer software I've tried has dropdown...
by Gold
Tue Jan 05, 2021 12:04 pm
Forum: Pro Audio Design
Topic: Cohen/Transamp output stage
Replies: 30
Views: 57451

Re: Cohen/Transamp output stage

Since I’ve never done FFT and swept sine testing I don’t trust a cobbled together system. My interface has ASIO drivers. The reason I picked the interface I got is that it’s flat to 60K at 192fs. It was a cheapie too. I do t think that’s the problem. A friend says he uses blue Tac on his interface k...
by Gold
Mon Jan 04, 2021 12:26 pm
Forum: Pro Audio Design
Topic: Cohen/Transamp output stage
Replies: 30
Views: 57451

Re: Cohen/Transamp output stage

I'd argue that's not that stupid. First, you can easily make an XLR to double BNCs break-out. I use 5 pin XLR’s for stereo connections. I’d either have to stuff four BNC cables into an XLR housing or build a breakout box with XLR’s and binding posts. I would much rather see binding posts than a tot...
by Gold
Mon Jan 04, 2021 11:49 am
Forum: Pro Audio Design
Topic: Cohen/Transamp output stage
Replies: 30
Views: 57451

Re: Cohen/Transamp output stage

AD2, while useful, is not that low noise (but ok for general purpose work). You may check QuantAsylum QA401. This is the most affordable and versatile analyzer that I found (and use regularly). The first QuantAsylum was unbalanced so pretty useless for pro audio. The ne one is balanced but uses a p...
by Gold
Mon Jan 04, 2021 10:58 am
Forum: Pro Audio Design
Topic: Cohen/Transamp output stage
Replies: 30
Views: 57451

Re: Cohen/Transamp output stage

Paul - Now that you've got a Windows machine get a Focusrite 2i2 (USB) and a licensed copy of AudioTester. Your total outlay will be about $200. I have an Native Instruments interface. I could try Audio Tester. Maybe l’lI like it better than REW. I find having to check calibration every time really...
by Gold
Sun Jan 03, 2021 12:06 am
Forum: Pro Audio Design
Topic: Cohen/Transamp output stage
Replies: 30
Views: 57451

Re: Cohen/Transamp output stage

I won't debate personal subjective preferences for inaccuracies, BUT on the subject of null testing, nulling an artifact rich d.u.t. vs a clean reference path allows you to isolate those differences (artifacts?) I wasn’t looking for a debate. I think the most popular spot for a transformer in pro a...
by Gold
Fri Jan 01, 2021 1:25 pm
Forum: Pro Audio Design
Topic: Cohen/Transamp output stage
Replies: 30
Views: 57451

Re: Cohen/Transamp output stage

JR. wrote:
Thu Dec 31, 2020 10:26 am
One final caveat, null testing only reveals that two stems are different, not which is which.
In the case of a transformer input microphone preamp vs transformerless pre the one that has artifacts might be preferable in use.
by Gold
Wed Dec 30, 2020 5:18 pm
Forum: Pro Audio Design
Topic: Cohen/Transamp output stage
Replies: 30
Views: 57451

Re: Cohen/Transamp output stage

mediatechnology wrote:
Wed Dec 30, 2020 4:17 pm
Null test with music.
Good Idea!