Clik here to view.
LME49600 Buff-A-Lot 12.5W amp PCB
I have some PCB's left from a production run I did. It is a fairly simple design; A smd opamp (lme49990 or similar) for feedback and ten LME49600's as output stage. An audio input, output and a +/-...
View ArticleAlpine mrv f357 problems
The amp powers up but no sound from any of the channels. How would I start testing to figure out the problem?
View ArticleNeed a Auricap 100uF 200V film cap
I am looking for one Auricap High Resolution 100uF 200V film cap. If you are in the U.S and have one for sale, please PM me.
View ArticleHP 8903B Question ?
I plan to buy a HP 8903B. I will eventually hook it up to a computer and use Pete Millet's software. Do you guys have any tips when purchasing the HP 8903 ? What should I look out for ? How can I make...
View ArticleClik here to view.
make changes sure 4x100 tk2050 amp...
Hello, someone has made changes on this Sure 4x100 tk2050? thanks
View ArticleClik here to view.
Bizzaro fix for hum problem needs explanation! Pretty Please
Hi In the process of trying to fix a major hum problem in a tube line stage, I stumbled on a weird temporary solution. I think this weird fix is trying to tell me what the underlying problem is, but...
View ArticleWill linear deliver on promised lsj74
As of Dec 18 Linear promises to deliver the lsj74 in 2013 . Does anyone have a date when it will happen ? :p
View ArticleClik here to view.
active biasing power transistors
Can I use a circuit like this to bias larger transistors like "2sc2879" into class ab? A pair uses 200ma. I know I can't run it constantly, but it would be on the relay only on transmission. The idea...
View ArticleClik here to view.
Can someone check this crossover design for me?
Hi guys, As some of you may know, I'm using Fostex FE126s for midrange and treble duty. I'll admit that I like loud music from time to time, including things like Marilyn Manson. Those of you that have...
View ArticleI read that a symphony orchestra can
generate about 110 dB max, and though the article this was in didn't specify, I'm assuming that would be at the listener position. (Yes there would be a lot of "listener positions" in a symphony...
View ArticleClik here to view.
Red Spike V1.0 dBfs Meter
Red Spike is a dBfs Meter in real-time. Red Spike captures the input of your sound card and through a FFT routine shows the measured values in dBFS. Red Spike read the left and right channels of your...
View ArticleClik here to view.
Can this enclosure/speaker be reverse engineered?
Hi All: I'm relatively new here, had an account for many years but never really been active, I enjoy popping in every so often and reading about people projects, but now I have one of my own so I come...
View ArticleLooking for vifa m22wr-09 woofer
Hello, I am looking for a vifa M22WR-09-06 to replace a defective one for my Apogee Slant 8 spks. Please let me know if you have one or 2 for sale. Thanks! Fkat28 fred@katli.com
View ArticleClik here to view.
B315 Low Speaker Plans
Hey .... is there anything that can help the size of the box like this .....?
View ArticleANSAR Supersound Caps
Looking for some ANSAR caps in the values of 0.22uF and 0.47uF for a tube preamp. Please let me know what you have on these UK made caps. Thanks!
View Articleoutput impedance
I have been given an amp from an organ built in the 50s with huge power and o/p transformers and filter choke (twice the size of those on the 100w Marshal amp I also have on the bench). Valves are...
View ArticleClik here to view.
Possibly THE worst amplifier/battery wiring I've seen in a car!
This is running TWO sundown 2500's, with the "ability" to switch between 12, or 16volts. Behind the right seat, you have a 12volt battery, connected to a (maybe) 200amp switch, via 4ga cable. The...
View ArticleAikido CCDA
Hi, I am hoping someone has the Aikido CCDA 9 pin user guide . Please send to me or post as attachment. Seems tubecad site links are down for some of the manuals. Thanks!
View ArticleClik here to view.
DIY amp started smoking.. HELP!?!?
So I finished off this amp I got a while ago today, keen to see if it would work and when I turned it on! And then, it started to smoke.. :confused: Also there was a lot of static coming through the...
View Article