Terminating phantom power source
Hi. When I make up my audio cable (5 pin DIN to 1/8" stereo jack plug) to connect my SANGEAN 803A radio to my PC soundcard, if I make up a stereo cable - and if I plug into the soundcard's microphone...
View ArticleNew to DIY; Need Help w/ Single Speaker Amp
Hello! I'll introduce myself first as being completely new to the world of DIY circuit design, short of a couple weekends' worth of reading and several hours in DipTrace. I have a small PCB etching...
View ArticleAudio Nirvano
Has anybody Used 15" Audio Nirvano Drivers . Any comments please Thanks Pedro11
View ArticleNewbee
I have a bunch of 70s/80s era gear that is going to waste in my basement and don't have a clue on where to turn to sell it to someone who would apprecaiate it. It ways way too much to ship (I'd make a...
View Articleadjust bass boost frequency
first of all, if this is the wrong section of the forum.. feel free to move it. we all know car amplifiers usually come with a bass boost centered at 40hz - 50hz well i (and i figure most others) don't...
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Compactronized 6146
Hi, Today I received a quintet of GE NOS/NIB 7984 Compactrons. I got them cheap from eBay just because, especially just because of the high Pa-rating. What I didn't know is that they are apparently...
View Articleheadbanger amp
hi i want to build the headbanger amp, but i am useless at transferring schematics to matrix board layout can anyone help please, is there any freeware that dose it for me?? cheers
View ArticleRecored label
Hello, would any one know if it's hard to make a small recorded label? :)
View ArticleBC/VISHAY 150uf 16v axle caps
5 of these caps for £2.50 this includes postage i have a total of 50 to sell or swap so just drop me a message if you are interested cheers aaron
View Articletwo opposed transistors to clamp audio signal
you get the positive rail, the negative rail.. each one gets a transistor (or row of transistors) with the positive or negative preamp connection to set off the transistor to let out the amplified...
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First power amp build. Is this normal??
Today, I've wired together my first tube power amp. a bit nerve wrecking I might add :D. Two KT88's PP (for now, will be four later on) driven by a ECC99 PI into a Hammond 1650T in ultra linear mode....
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NAD 3020A Constant Hum
A few months back I recovered an old NAD 3020A from my father's garage. Hooked it up and all works well aside from a fairly loud humming noise coming from both the loudspeaker and the headphone...
View ArticleHow good are the cheap fullrange drivers?
I was thinking of building some cheapo speakers for my desktop using these drivers: FR88 - Fountek 3 inch full range aluminum basket - Europe Audio And a Lepai 2x6 watt t-amp. But then I was just...
View ArticleCabinet building advice for revelator system, trying to achieve reference std.
Hi all, I've been offered a set of revelator drivers suitable for a 3-way system. I was plannin on buying them to build into what I hoped would be reference level speakers. My concern is a lot of...
View ArticleUS Amps USA400
This amp uses 75344p (TO220) fets for the power supply. All fets are shorted and all gate resistors are burned to a crisp. None of my trusted vendors have the 75344's in stock so I'd like to confirm...
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wich foil/capacitor to harvest for ribbon ?
wich foil/capacitor to harvest aluminium foil (4 - 6 micron thick) for diy ribbon ? well it is being asked serveral times when i searched but never a straight anwser. i tried these this is metalized...
View ArticleWhere to buy heatsink for power amp?
I think this has been answered other times but I was unable to find the post I saw long long time ago. I need to buy heat sinks in the USA. I remember that there was a post with very good links to...
View ArticleBuilding a DJ mixer
Hello everyone, I wasn't exactly sure which section to post this in, so I hope moderators can move it if it's in the wrong place. I'm looking to start the planning to build a simple DJ mixer. I know...
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PSU II Question
I'm a little puzzled about some of the results from PSU program. For I1 I have 100mA stepped to 170mA (after 3 seconds). In the same way I have I2 4mA stepped into 8mA after 4 seconds. When I ran the...
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Help needed to identify this british made Amp
Help needed to identify this British made Amp. I got this amp and radio tuner two month ago. There is no name no model id what so ever. It has 2 5Y3 and 4 6v6. Uses cable to connect to a multiband...
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