F5 on 2x22v?
Dear, I am talking with mravlca about buying his F5 amp parts. And I'm wondering if I could run this on a 2 x 22v transformer with/without minor adjustments? Thanks in advance:D Duco
View ArticleJl audio 300/2 please help!
Hello, I have bought faulty Jl 300/2 audio amp. Amp was repaired an unauthorized person before. +-53V ok. -+15V ok. (+-17V) r513 resistor 3.8V near yellow transformer. Driver boards led are fine (Green...
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I/V for PCM1704
I woul like to know if the attached schematic is OK like I/V for PCM1704? Also I want to know the necessary Idss for SK170BL? Attached Images Jocko IV stage .png (7.0 KB)
View ArticleAnyone opened a Tom Scholz Power Soak before?
Hey guys, I was lucky enough to score a Tom Scholz R&D Power Soak (PSII) on the 'bay, was hard enough to find one of these in the US but somehow I managed it in Europe.. (Go me! :D) Anyway, the...
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Smartmains, Arduino based with extra's
I made a PCB with some advanced on/off-options based on a Atmega328P, commonly used in Arduino Uno/Duemillanova's. The code that is implemented is written in an Arduino environment. This post is an...
View ArticleRelays gold plated
Hi! I need some relays for signal (very little current) dual positions, gold plated, and inert atmosphere. I need to know where I can purchase them with shipping to Italy (Europe would be better)....
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FAST woofer choice for Alpair 7.3
Hi. I am looking to develop a few products that can be produced and sold on a very small 'made to order' level. I am looking at producing a FAST that resembles the B&W 800D With the Alpair 7.3 in a...
View ArticleBest design program
I saw this project and really liked it: http://www.diyaudio.com/forums/full-...-w3-881si.html It's super simple and seems fun (not to mention cheap). I would like to challenge myself a little from a...
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CDM4/19 two types of cog-wheel
Hi, There are two kinds of cog-wheels in the CDM4/19 based drawer mechanisms (see the photos attached): full plastic, supported on both sides (the second photo) and plastic with the metal spindle,...
View Article41Hz Amp5 Driving Arcaydis DM1
Hi, I have just ordered a pair of DM1's from Arcaydis and plan to build a chip amp to drive them. I'm pretty new at building amps, so far I have built a Cmoy, CmoyBB and the Amp32 from 41Hz. I'm now...
View ArticleRecover the preamplifier
Good day to all of you in the forum, I have to replace the preamplifier in my HI FI system that has home built around 20 years ago. I am looking to a simple wiring solution since I am no so young ! I...
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Opamp challenge
Taking Scheme A with its magnitude and phase versus frequency as shown in Figure B (blue curve), I make an invitation to the community to achieve similar frequency response (magnitude and phase), as...
View Articlewhat to do with a pair of 5" 'woofers' ?
specifically these (warning: link to PDF) Wire them up in series, make a sub? make a BLH? stick a tweeter and make a cab out of mdf to improve my cab building skills? hood ornaments? :/
View ArticleDAC lesson 101 question
non-audiophile here, but enjoy playing flac files from my PC (linux-crunchbang). I like my diy speakers and t-amp (no optical input) and want to use with external (diy kit?) DAC setup to drive my...
View ArticleOnborad channel fuses keeps blowing on Parasound 2205 AMP
I have a parasound 2205 amp and one channel is dead.I take it a part and the 2 fuses on channel 4 board are blown. Now all the cap looks fine, the smaller ones and the 2 big 80v 15000uf. So I replaced...
View ArticleOn/Off cycling
I try to respect the members of this forum by not asking too many stupid questions, so please bear with me. :sigh: Can lowering the incoming voltage via variac to an amplifier before shutting down help...
View ArticleTDA7293 datasheet
http://www.electroclub.info/invest/tda7294/TDA7293.pdf here is the datasheet i have 3 things that i want to know 1) what does æ symbol mean at quick reference data 2) are the 120v the maximum supply...
View ArticlePlease make ship go ...
Hello all, not much of an audio-file - like messing with things a bit, but pretty much just like the plug-n-play kinda stuff. We have set up a Conference room (10x13) room with a simple Home Theater...
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