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FS - Pass F6 boards "unbuffered" version, IRFP240
As it says...I just could not get this amp quiet so on to another project. Cinemag transformers included as are the MOSFETS (IRFP240) IIRC the LED's are all blue and bias hits the specified ranges....
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Janus - Dual Polarity Variable Voltage Power Supply
Janus - Dual Polarity Variable Voltage Power Supply
View ArticleWTS: OPA627AU/OPA637AP/OPA637BP
Item(s): 10 x Burr Brown OPA637AP (DIP-8) : 10 x Burr Brown OPA637BP (DIP-8) : 5 x Burr Brown OPA627AU (SOIC) Package includes: Chip Only Price: $8.00 each. Dealing method: Free Shipping Worldwide...
View Articletube tester comparison
Please can anybody tell me, if you know, which type of these two tube testers (TV-7/U and TV-10D/U) is better (more usual and functional for mesure and matching amplifier tubes like 12**7 ,6CA7,6L6...) ?
View ArticleSilver Flute Infos
does silver flute has a tweeters line ?, i have found only woofers when buy them in europe ? thanks
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About GU50 PP in UL with separate G2 winding and supply
After a successful design of a high power bass amp with GU50 I wanted to find out some nonstandard application possibilities and limits for this tube in UL mode . The resulting application might be...
View ArticleTransformer voltage for lm3886 kit
Hi, i'm wondering if this 115/230v 300va 0 25v 0 25v transformer would be ok for this kit when running 6 ohm speakers, or is it to high a voltage? Toroidal Transformer 300va 0 25v 0 25v The next down...
View ArticleCenter Channel
I build a stereo TV cabinet w/center CH. speakers. Yes, stereo, (mono) center channel. 2x 12" subwoofers, + 1x 8" DVC Woofer + 4x 6" midrange + 2x twetters. Why is the Center Channel always religated...
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Dacmagic upgrades
Hi enjoying the posts on the forum, have been searching possible mods for my dacmagic have completed a suggested mod on headfi which seemed to work quite well by bypassing and bridging caps inside...
View ArticlePower supply Driver Question
Is it the PNP or the NPN driver that the base connects directly to ground?
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Rockford Fosgate Type RF X7
I ASK FOR YOUR HELP!!!! I want to know the regulator takes this amp where indicated in the picture HELP PLEASE!!!! Attached Images TYPE RF X7C amp pics 004.jpg (946.4 KB)
View ArticleVW Passat B5 - two AWM124
hey guys, a friend of mine will buy a VW passat B5 and needs some bass in his car. He need 40Hz, in a flat and low cost woofer, so i designed this: Directupload.net - rechl9pc.jpg The Speakers will be...
View ArticleAcoustic guitar 2-channel preamplifier schematic
Hi All, I am looking for a good quality acoustic guitar two-channel preamp schematic. I would like to get a well-designed, quality and tested preamp schematic. There are several ones available but no...
View Article2 channel with sub wiring questions
At this time, my left and right mains tower speakers are fed from my power amp. The diy. sub is being fed from the second pair of line level outputs from my Adcom GFP565 preamp to the line level inputs...
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The MCRU Summer Sale
Whilst I prepare for my August audio fest and then Whittlebury I have set my summer sale in motion. All the items that are reduced or are ex-dem (one or two part ex's as well) are in this section of...
View ArticleBeginner looking for inexpensive chip amp kit.
Hi, first post here, hopefully I've found the correct section to post under (If not please feel free to move it) I have read that once you start fiddling with audio gear it can lead to wanting more and...
View ArticleWhy you should mount your SiC mosfets vertically
From a DOE 2013 CFP; As new WBG high voltage semiconductors and transistor topologies are developed, identification of failure modes and the conditions that initiate them are becoming increasingly...
View ArticleQLS-HiFi QA860 digital player is coming
Just checked the Chinese site of QLS-HiFi, and found this: QA-860/QA860ĸ´ø¼¶Êý×Ö²¥·ÅÆ÷, DAC,·¢ÉÕ¼¶Êý×ÖתÅÌ£¬HI-END¼¶Êý×Ö²¥·ÅÆ÷£¬WAV²¥·ÅÆ÷£¬APE²¥·ÅÆ÷£¬FLAC²¥·ÅÆ÷£ ¬ÎÞËð²¥·ÅÆ÷£¬Ä¸´ø²¥·ÅÆ÷ Highlights: -...
View Articlegrado reference master cart
if anyone wants to save over £200 then I am selling my cart which has no more than 20 hours playing time, these carts cost over £600 I am asking £400 for it, if anybody lives near leeds uk then you are...
View ArticleHope for fried t-amp?
The other day while testing some new drivers I fried my t-amp. As far as I know, I crossed a + / - on one of the speaker wires and smoke came from two areas. Any way to methodically test each...
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