Phono connection for pioneer sx34b
Hello everyone, I got a pioneer sx34b receiver recently, everything seems to work fine except when I switch the nob to phono without any source connected, a loud buzz came on. What can I do to get rid...
View ArticleRockford fosgate power 500bd in protect
Hello everyone I just in for my own collection a rockford fosgate power 500bd. It's in protect (red light on) I checked the output fets (IRF540 & IRF9540) they all test out fine no shorts. If I can...
View Article2 Tube Vents to make equivalent from one
Hi. In a enclosure with 4.1 Liters having a 17cm long x. 40mm diameter tube vent required... what length should I use if I need to switch the project to 2 tubes, one being 50mm and other 40mm diameter....
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Please check out my final circuit X/O with piezo
Ok, after reading a lot, everything is almost set. After reading that piezo needs different treatment, I went on how to crossover my midbass with a piezo, I decided to follow some suggestions from the...
View ArticleThe La Scala bass horn
Klipsch rates the speaker down to 50 Hz, but surely that is no 50 Hz bass horn - right? Could someone shed a little light on that? Does the cabinet perhaps behave as a BR box below some frequency?
View ArticleFantastic $40 WM8740-based board
This isn't really pure DIY, more like BIY plus some tweaks, etc. but... I just received my $40 WM8740 DAC (ebay item 190685871588) and I have to say it has far exceeded my expectations so far. I am...
View Articlepioneer rt 707 reel to reel
yup got it on ebay right now check it out item number 281068106901
View ArticleHello I am noob
Hi, I am so happy to have found this site! Just a little back story, I work as a live engineer in Anchorage, AK, recently graduated from LA recording school (should have learned it all from dave...
View ArticlePolypropelene Cap Help!!!
Hi Guy's I am a newbie here and this is my first post. I recently decided to recap an old preamp of mine and the service manual indicates all the ceramic, electros and MF which I believe to be...
View ArticleEffect of lower G2, EL84 PP
Hi All, I have been lurking here for a while and learnt plenty reading the topics here. I have a couple of EL84 push-pull amps that I bought off fleabay a while ago, they are supposed to be "Suppo" but...
View Articlematching complementary transistors quickly and easily
i got the link to this from EDN in my inbox today. a really simple method to match complemetary pairs. any thoughts? Successfully choose complementary bipolar transistors | EDN i wonder if this would...
View ArticleAudio Technica LP1240 Turntable
Greetings all. Last year my trusty old Denon Direct Drive turntable died a horrible death. I used it to play records of unknown provenance picked up from garage sales and other sources of the weird,...
View ArticleMirage M1 grille cloth removal?
Hoping somebody has an insight into what might sound like a complete newbie question... how the heck does the grille cloth come off the Mirage M1? I've got what sounds like a damaged midrange in one...
View ArticleThe best 1W amp with 6v5 1A, anyone?
I want to build the best amp possible, either chip amp or discrete. Problem is I'm limited to power supply. I will use Li-Ion battery of 7v3 1200mA. Any chip/circuit recommendation?
View ArticleEdcor now selling parts to wind your own transformers
Edcor is now selling the seperate plates and end bells to make your own transformers and chokes etc.
View ArticleWhere to place current limit output resistor?
I am now starting my final " leftovers budget" build. After collecting "stuff" and building great gear since 30 years ago. I have now amassed leftovers that I will now use for a "final" use all of it...
View ArticleMeasuring volts on an unloaded PSU secondary
I have started assembling a PSU out of some scrap. My unloaded power transformer delivers approx. 390-0-390 volts AC at the secondary. After diode rectification, I obtain around 358 Vdc (again,...
View ArticleZVS smps
Hello, I wont to design a SMPS with ZVS switching, with the output power of 3.6KW. The input voltage is 390V, and fs~75kHz First I have chosen the power transformer, so I have selected an E55 3F3...
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1625 tube radio?
I got some RCA 1625 I love to build a tube radio using it. I wanted to check if anybody has any experience? there are some Radio schematics on the web take a look at these and enjoy:
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