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PSU for Gaincard - Questions
Hello! I am new in this forum and I have not electronic skills. But I am very very handy with an iron... I am in a Naksa80 project, but I have a Gaincard without psu. It was one of my amps in the past....
View ArticleSplit DC adaptor for 12v and 5v
I have a BT module that will be integrated into my setup. The problem im running into is that it requires 5V as opposed to the 12 volts coming from my DC adaptor which will power my amp. Would my best...
View ArticleLM3886 in bridge mode with Single supply polarity - Schematics neded
Hi I saw the Single Supply configuration suggested in the LM3886 datasheet. Does anybody have a readily available validated design implementation of a LM3886 audio amplifier in bridge configuration...
View ArticlePROBE MASTER!
Has anyone try these DMM test leads?Multimeter test leads mfg by Probe Master They look really good for the price, I have fluke(TL175) and Pomona leads and I believe these probe master are better build...
View ArticleDirettore Standard
Does anybody know how to change the clock from 24 hour system to 12/12 in the software? The time announcements are in 24 hour format. I looked all over and couldn't find it. The PC clock is already in...
View ArticleDynaudio D76 AF 3" Dome midranges
(2) in excellent condition. 1 new in box, 1 used less than 10 hrs. 2 more in need of Dome repair. $150 plus shipping. Thanks
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p300-1 dead
Hello all, I received two amps from a friend asking me to see if i could fix them. He got them from a yard sale and knows nothing about them besides them not working. They are RF P300-1/2. Both of them...
View ArticleFirestone 6V6 Monoblock Problems
I'm having problems with one of these monoblocks I'm working on. One is just fine with a very little hum. The other has a terrible hum. I have measured all the voltages and they are roughly the same....
View Articlehot amp
I have a dual xpe2700 powering my 2 mtx 10s and it is getting hot not to hit to touch but stillwarm need a little help
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Rockford Fosgate Power1000
Any guess as to the current value of this beast ? It looks brand new. Never used. In the box with wire harness and all. Please chime in ! I recall this amp costing around $2500 back in the day!...
View ArticlePCM2902 LPF question
I just finished my first DAC build, the reference design from the TI PCM2902 data sheet. I had some difficulties on the first PCB version; seems the oscillator being under the chip was a bad idea. Rev...
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Playstation 1 as CD transport (SPDIF output)
I have some playstation-1's, some modded some stock. During the mods I managed to zapped the audio section of one board..... Maybe it can still work as a transport, I thought, all I have to do is pipe...
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RS1003 triode mode Spice models
Hi, Based on some measurements of the RS1003 tetrode in triode mode connection, I made some spice models. The measurements are from Tom Schlangen - model 01 Davorin (DIYAudio member) - model 02 there...
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Rotel RA985 BX problems
Here is a Rotel RA 985 BX come to the shop on protection mode . Quick look presented about 500mv of offset in the output , no bias , and no output and fuses fine . first think to look given that fuses...
View ArticleHigh quality Amplifier case for sale on ebay
Hi , I am selling an as new very high Quality 'Pesante Dissipante' model Contenitori Hifi amplifier case for DIY constructors. 3u size with heat fins. Hi-Fi 2000 contenitori per l'elettronica, case...
View ArticleIs there any benifit in a signal analyzer
I currently use ARTA with a cheap usb soundcard for spectrum analysis. It shows me the big stuff like hum, harmonics and noise floor pretty well. I was wondering if there is any benefit in getting a...
View Articlesafe way to use grounded scope with non isolated equipment ?
I want to start experimenting with SMPS. The scope will still be directly plugged into the mains outlet socket and connected to Protective Earth via it's own earth wire. I plan to use an isolating...
View ArticleMotional and inductance mpedance correction of loudspeaker
I open this thread for we can talk about impedance correction of the loudspeakers. It seems obvious that a flat impedance curve at the speakers's connectors is beneficial, both to design low and high...
View ArticlePower switch for F5
Hello, I´m actually buliding a F5. Can I use a 3 amperes power switch or is it too small. Many thanks, Rents
View ArticleMA Alpair 12P Vs Corals Beta 8
hi as promised earlier this year, i will post my impression of the coral beta 8, a legendary FR with a modern FR, the alpair 12p. measurments and listening impressions too come, asap. i have both in my...
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