Search found 5477 matches

by mediatechnology
Sat Aug 16, 2014 7:05 pm
Forum: Document
Topic: NE5532 NE5534 THD
Replies: 13
Views: 23370

Re: NE5532 NE5534 THD

It's a horrible moment when you realise you've just made several hundred defective products I once had a "client" that got all of his SSL RC5534s replaced - thousands of them - at no charge for parts or labor over two years after the console was commissioned. SSL picked up the tab for abo...
by mediatechnology
Sat Aug 16, 2014 6:55 pm
Forum: Pro Audio Design
Topic: LM4562, LME49710, LME49720 Start-up Behavior
Replies: 42
Views: 119867

Re: LM4562, LME49710, LME49720 Start-up Behavior

I LIKE big Ib in OPAs. And the advantage we think we might get from low bias current bipolar OPAs - higher bias resistor values - we don't actually realize if we have to make the bias resistors low to have good start-up behavior. I do realize that there's the bias current noise issue that prevents ...
by mediatechnology
Sat Aug 16, 2014 9:19 am
Forum: Document
Topic: NE5532 NE5534 THD
Replies: 13
Views: 23370

Re: 5532/4 THD

Thanks for sharing this ricardo. Sorry for the difficulty (now fixed) that prevented pdf files from being attached. I can speak from experience that the performance of ICs are strongly process-dependent. A close friend, who makes them, once likened it to baking a cake. The Raytheon 5532 and 5534s we...
by mediatechnology
Sat Aug 16, 2014 9:15 am
Forum: Document
Topic: phpBB3 Formatting Options BB Codes
Replies: 0
Views: 7625

phpBB3 Formatting Options BB Codes

I'm always having to look up formatting options in phpBB3.
Here's a good reference I found: https://www.phpbb.com/community/faq.php?mode=bbcode
by mediatechnology
Sat Aug 16, 2014 9:01 am
Forum: Pro Audio Design
Topic: Simple PS Voltage Splitters Using Audio Amplifiers
Replies: 3
Views: 10554

Re: Simple PS Voltage Splitters Using Audio Amplifiers

I thought that the article was over-thought and the solutions over-complicated but decided to post it anyway. TI does have a simple rail splitter, the TLE2646, but it IMHO is a little noisy: http://www.ti.com/lit/ds/symlink/tle2426.pdf I have used the LM317 and LM337 as active shunts, not for a rail...
by mediatechnology
Tue Aug 12, 2014 10:51 am
Forum: Build
Topic: Mid Side M-S Matrix Construction Information
Replies: 121
Views: 454235

Velleman K8090 USB and Pushbutton-controlled Relay Board

Thanks Doug. Velleman also make the K8090 8 Relay Board that has USB and pushbutton control. As I understand it the buttons can be programmed via USB to operate in banks using software-defined logic. Then the USB can be disconnected if needed. Thus, a "solo" pushbutton command for instance...
by mediatechnology
Mon Aug 11, 2014 3:06 pm
Forum: The Peabody Lounge
Topic: Forrest Mims Website
Replies: 1
Views: 5555

Forrest Mims Website

From the "where are they now" category the Forrest Mims website.

http://www.forrestmims.org/
by mediatechnology
Mon Aug 11, 2014 2:55 pm
Forum: Document
Topic: Jim Brown's Audio Systems Group Publications
Replies: 2
Views: 5699

Jim Brown's Audio Systems Group Publications

Jim Brown's Audio Systems Group Publications

http://www.audiosystemsgroup.com/publish.htm