Screen Grid Peak Voltage
In ultra-linear mode, it seems like many designs I have seen have the potential to exceed the maximum rated screen voltage when a signal is applied, but are fine at idle. The DC voltage at idle is what...
View ArticleRIP Kongar-Ol Ondar
http://www.nytimes.com/reuters/2013/...WzbqvkfWY42pvw He did much to introduce Westerners to Tuvan music. A brilliant and engaging performer, indeed. Brain aneurysm took him at the age of 51. If you...
View ArticleFully assembled Electrostatic cells
Dayton wright full range ESL cells 15 x 5 inches - fuly assembled working cells - photo will follow $75.00 per cell
View Article28 Days Later
I bought a new car 28 days ago, and I need some tunes. In this thread I'll document my attempt to squeeze some midbass horns under the dash. Not sure if it's possible to make them that small, but let's...
View ArticleFS: Buffalo IIISE DAC, Legato 3.1 I/V Stage, Placid HD & Bipolar PS Modules
Buffalo IIISE, AVCC & Trident Regs: Cost $380, Sell $305 Legato v3.1 (with buffers), assembled & tested: Cost $115, Sell $90 Placid HD Power Supply, assembled & tested: Cost $60, Sell $50...
View ArticleClik here to view.
Inductor Fed VR Tube
Would it be beneficial to feed a voltage regulator tube with an inductor (as in the following pic)? I'm thinking that a 50vdc air-gaped reed relay coil would do the trick. They measure about 1.9k each...
View ArticlePlease help me pick a preamp
I have 2 qsc 1400 amps running bridged into Bose 901 series 1. I need a preamp to get more juice out of the amps, I have read amps like this do not respond well with home audio preamps. Can someone...
View ArticleHarman Kardon 930 Bias Adjust
Full recap of the power supply and pre driver board. All new replacements for TR603, TR606, TR605, TR625, TR626 and TR623 on the pre driver board. This has solved my popping issue that I posted in...
View Articlead797 plus buf634
The Buf634 literature says to use "up to 100 ohms" between the op amp and the buffer, and it has a table for various OPA's, but it doesn't specifically say anything about the ad797. Surfing google,...
View Articlegot some DAC chips (DSD1608PAH and PCM1690DCA) now looking for help
I was recently given two bags of DAC chips (three in each) from a prof of mine. The bags are moisture sealed and anti-static so I can't even see the chips right now. I have never attempted to learn how...
View Articlelooking for BUFALLO DAC or similar
looking for BUFFALO DAC or similar, preference from Europe. Also looking for ES9018 and ES9016 bare chip. If you have one to sell , or know a person that have, please contact me. Thanks.
View ArticleClik here to view.
YAHA HELP
I've built this YAHA but can't get to work. :o There is power going to the board but absolutely nothing happens. The bottom side is kind of messed up from changing some components when it didn't work....
View ArticleClik here to view.
Yet another PGA23xx board...
To supplement my Ampduino controller (see thread elsewhere), I have designed a board with two PGA2310s, designed to provide two-channel balanced or 4-channel stereo volume control. The board measures...
View ArticleLCY 130 Ribbon Sensitivity ?
I have a speaker on loan and have been trying to work out a speaker level crossover. The speaker's owner says he chose the LCY because it was rated at near the same 92 or 93dB sensitivity as the mid ,...
View Articlefoam surround, how to reinforce?
hey guys! I have a pair of Sony speakers with 2 12" woofers each. The four 12"s pound pretty good, and I will be taking them to a backyard party a week from today. However, the foam surrounds, although...
View ArticlePreamp for Topping TP60
Hi guys, I'm new to all this and will be purchasing the Topping TP60 due to its great reviews and great price ($210). I would like to add a preamp for more flexibility (more inputs) and the reported...
View ArticlePitch Drop?
In today's Wall St. Journal, couldn't resist. What will OZZIES think of for the next 86 years? The Pitch Drop Experiment | School of Mathematics and Physics
View ArticleClik here to view.
Simple P-P Drill Sheet
Here is a scan of my Simple P-P PCB to help anybody who needs a drill outline. Just scale it to match your PCB. Attached Images Simple P-P Drill Pic.jpg (756.1 KB)
View Articleta n55es
Having a spot of bother with one of my n55es power amplifiers, seems the left channel has disappeared all together! When measuring the bias at test points right channel is at 7mv left has no reading, i...
View ArticleParadigm 11se Mk3 - Worth trying active crossover and bi-amp / tri-amp?
I have a pair of Paradigm 11se Mk3's that I have owned since new that have and do serve me well. I have been reading more and more about the possible benefits of removing the passive crossovers and...
View Article