Search found 19 matches

by Speedskater
Wed Jan 02, 2019 1:14 pm
Forum: The Peabody Lounge
Topic: Remote Control Buttons
Replies: 4
Views: 919

Re: Remote Control Buttons

Once again, JR comes to the rescue!
It worked. Thanks.
The hard part was getting the case open.
by Speedskater
Tue Jan 01, 2019 1:51 pm
Forum: The Peabody Lounge
Topic: Remote Control Buttons
Replies: 4
Views: 919

Remote Control Buttons

Is there any easy way to rejuvenate remote control buttons?
by Speedskater
Mon May 21, 2018 6:16 am
Forum: Build
Topic: Need help in choosing a amplifier IC for DIY home 2.1 speakers
Replies: 5
Views: 2399

Re: Need help in choosing a amplifier IC for DIY home 2.1 speakers

The DIY Forum has three sections on amplifier building:

Solid State
http://www.diyaudio.com/forums/solid-state/

Chip Amp
http://www.diyaudio.com/forums/chip-amps/

Class 'D'
http://www.diyaudio.com/forums/class-d/

Something for every skill level and price point.
by Speedskater
Sat May 05, 2018 8:04 am
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 480
Views: 173153

Re: A Low Noise Balanced In Moving Coil Preamp Using the ZTX851

I remembered that one of my MM preamp customers shared his MC experiences with the network in series with pin 1. ............................................. The thing about that resistor, capacitor, switch network is that it lets the camel's nose into the tent. It would be better to hardwire pin ...
by Speedskater
Wed May 02, 2018 8:06 am
Forum: Pro Audio Design
Topic: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851
Replies: 480
Views: 173153

Re: A Low Noise Balanced In Moving Coil Preamp Using the ZTX851

It would be better if: a] the AC line voltage Safety Ground attached to the chassis near where the AC cord enters the chassis. b] the audio circuit common is attached to the chassis at a single point near the audio input connectors. c] the DC supply common is attached to the chassis at the same sing...
by Speedskater
Tue Mar 27, 2018 6:25 pm
Forum: The Peabody Lounge
Topic: Jensen receives the TECnology Hall Of Fame Award
Replies: 7
Views: 3775

Re: Jensen receives the TECnology Hall Of Fame Award

Jensen Transformers sent me an e-mail about the award. I think that this is the first e-mail I have ever received from their sign-in list.
by Speedskater
Sat Jan 20, 2018 8:37 am
Forum: Document
Topic: "Some Tips on Stabilizing Operational Amplifiers" Deane Jensen
Replies: 1
Views: 2425

Re: "Some Tips on Stabilizing Operational Amplifiers" Deane Jensen

The complete June 1978 'Recording Engineer & Producer' magazine issue. The article starts at page 42.

http://www.americanradiohistory.com/Arc ... 978-06.pdf

* * * * * * * *
thanks to:
American Radio History
http://www.americanradiohistory.com/index.htm
by Speedskater
Thu Jun 09, 2016 7:52 am
Forum: Test, Measurement and Repair
Topic: Bob Cordell: Build A High Performance THD Analyzer
Replies: 5
Views: 5110

Re: Build A High Performance THD Analyzer: Bob Cordell

I think that I might still have a set of the original pc boards up in the attic. Getting the selectors switches brought the project to a halt.
by Speedskater
Tue May 31, 2016 7:40 am
Forum: Pro Audio Design
Topic: was HYPEX amps cheap surround system
Replies: 59
Views: 33728

Re: HYPEX amps

Why not think about the serious DIY chip amp kits by Tom Christiansen? Key features of the Modulus-86 Rev. 2.1: 65 W (4 Ω), 40 W (8 Ω) output power when using the Power-86 and recommended transformer. Vanishingly low 0.000061 % THD (1 W, 8 Ω, 1 kHz). Ultra-low 0.000067 % THD (40 W, 8 Ω, 1 kHz). Ultr...
by Speedskater
Tue Nov 03, 2015 7:52 am
Forum: Pro Audio Design
Topic: Basic Mixer - 1646 output stage - seeking critique
Replies: 14
Views: 24697

Re: Basic Mixer - 1646 output stage - seeking critique

As always, I'm quick to note that:
In an XLR balanced analog interconnect system, the Pin #1 does not connect to the circuit common (aka ground). Pin #1 is a shield and connects to the chassis at the connector.