Clik here to view.
Very high THD levels
Hi everyone, I'm having a problem with an amplifier, because I'm having a simulated maximum THD1 of 0.04% at 4 ohm (~ 1W to 100W), and a maximum THD20 of almost 0.5% (typical levels 0.2-0.3%) which is...
View ArticleDC offset issues - Help! - Dean GA40R
I have a solid-state Dean GA40R guitar amp. When I turn it on with no inputs and all the knobs at 0 I get this huge hum/buzz coming from the speaker. The amp has been sitting for a couple of years and...
View ArticleSubfoofer to complement a set of " Statements "
I am after design specs for a Subwoofer to compliment a set of DIY " Statements " full size and center - I was thinking a duel 12" or 15" Any Ideas or advise ?
View ArticleBluetooth 5.1 Surround Sound ?
Got this cool idea for a cool little project but I'am extremely unfamiliar with audio technology and have a bunch of questions and found this website with the hopes of having a few of my questions...
View ArticleClik here to view.
TA8251AH - design review (or flame)
Application - not exactly hi-fi ... these will end up being part of a charity haunted house (sound effects and such). Why use TA8251AH - only because I bought a pile of them for <$1 each, on sale at...
View ArticleClik here to view.
Grounding & Earthing connections
As astx asked for a new thread to discuss the following, i've started this one, following on from Post # 311 http://www.diyaudio.com/forums/solid...400w4r-21.html Quote: Originally Posted by kgrlee in...
View ArticleClik here to view.
FS: MiniDSP 4x10 Hd
miniDSP 4x10 Hd | MiniDSP I purchased this about 6 months ago and used it for about 3 months. As such it looks like new. Lots of great features. Digital input, balanced ins/outs, learning remote volume...
View ArticleChinese TDA1541 v4.0
Sorry, but I am a newbie, know little about DAC. I just bought this Chinese DAC 4 x TDA1541 in parallel. I just hooked up the transformer temporarily just to see if it works. My problem, is that it...
View ArticleAmp draw, Class A vs AB, oh my?
I had to do some repair on my KSA50 today. I thought the Thermistor had failed but it just turned out to be a loose screw on the patch panel. As I was buttoning it up I noticed my WattsUp meter sitting...
View ArticleClik here to view.
CD 104 problem
Hi The cd 104 reads cd's until the middle and stops. So I opened the unit underneath and the head gets stuck in the middle, you have to push to place it back near the motor. It works perfectly if I...
View ArticleQuestion re: DC on balanced in/out on 2x8
Probably one for the MiniDSP team, in two parts: Balanced inputs to the 2x8 - Is the input fully differential? Is it tolerant of dc voltage from either signal pin with respect to ground? My output...
View ArticleMaximum playable analog frequency using 192 kHz DAC?
Hi, this is my first post here and i hope that my question is not too silly and i use the correct forum. For a project i need to playback ultrasound (40-50 kHz ...) with a dsp. This ultrasonic...
View ArticleBudget speaker choice for 15 PP EL84 Amp
Hi all, Ive been searching for a budget speaker (current used value) that my little 15w PP EL84 Valve Amp will drive to respectable levels of volume. My 1990s KEF Cresta III floorstanders are 90DB, but...
View ArticleBudget speaker choice for 15w PP EL84 Amp
Hi all, Ive been searching for a budget speaker (current used value) that my little 15w PP EL84 Valve Amp will drive to respectable levels of volume. My 1990s KEF Cresta III floorstanders are 90DB, but...
View ArticleOS X audio testing software
I am looking for something to test my preamp and to test my power amp for distortion and frequency response. Faber Acoustical makes some software to do this (i.e., Electroacoustic Toolbox, SignalScope...
View ArticleClik here to view.
miller comp question
I have the amp in the enclosed spice schematic up and running on a breadboard. It sounds fine. I also have an ac analysis of the amp in ltspice enclosed. If I understand the plot correctly, this amp...
View ArticleTrying to build a DAC, very very confused
Alright so I've settled on using the WM8741 for a DIY DAC. Now, I'm not entirely sure what I'm going to use as a source, but I know that the audio will be decoded and spit out by the MCU as an I2S...
View ArticlePreventing crossover between mixers
I need to tap an existing mixer circuit to obtain output for use in a second audio mixer circuit. I'm concerned about crossover between the two and plan to install a unity gain non inverting op amp...
View ArticleClik here to view.
I can't find ANY 1/4" Phone plugs in ANY eagle library!
Hi, I would like to find a through hole PCB mount 1/4 inch phone socket (Female) to use inside Cadsoft Eagle. I would have thought this would be easy but alas it is not! I can't find any libraries for...
View ArticleEdcor Transformer Problems
I'm not trying to be obnoxious toward Edcor, more of a heads-up in case someone runs into this in the future! To be brief, the output transformers I ordered from Edcor are wired or wound incorrectly. I...
View Article