Which design is better for portable linear amplification?
I`m building until Christamas a portable preamp for my headphones. The amp will be powered by 2x9V batteries(or maybe just one 9V battery). I`m trying to drive my headphones, a pair of Audio Technica...
View ArticleQA660 vs QA550
The reviews for both players: QLS QA-660 and QLS QA-660 First Listening Test QLS QA-550 with Terratec Aureon FireWire Want to hear more feedback for QA-660, especially 1 vs 1 with some of the classic...
View ArticleClik here to view.
Disappointed with Pioneer TS-W310S4
Hi, I recently bought a pioneer sub which said 95db sensitivity (1watt 1 meter). After I buy and open the box it said 95db sensitivity (Inside car). Why would they measure inside car:mad: Do you know...
View ArticleFS in Los Angeles, beefy subwoofer setup, H-frames, full-range drivers
Hello, Have all the parts for a subwoofer project I was contemplating, but then realized I don't need such a beast. Pieces! Exodus Audio Tempest-X (not the X2) 15" subwoofer with XBL^2 Exodus Audio...
View ArticleOrange County Speakers Will *Not* Sell Spiders To Us
Yes, they state "reasons" but I feel this is worth mentioning, as they will sell you surrounds and other stuff. They will not be saving any "repair jobs" here because I feel some folks will mess it up...
View ArticleAdmitted to MIT!
This morning MIT released it's early admission decisions, and I am incredibly happy to say that I was admitted! It is one of the most selective schools in the country, or the world for that matter,...
View ArticlePassive mixing network -- calculating total loss?
I have a question about the "New York Dave" balanced mixing network design found here. In a design with four balanced inputs and a single balanced output, the value for Rx would be:...
View ArticleClik here to view.
bjt jfet CFP diff input stage
I im designing a new amplifier and found this interesting article: Memory Distortion Philosophies - Part 4 : Circuits As from the link i would like to simulate this input stage in LTSPice...and if...
View ArticleFostex ff125wk drivers and amps and more for sale?
Good Evening to everyone here, I am selling a use pair of Fostex ff125wk in good working order. The only thing is I have soldered wires off and on other then that I have the boxes and paper work.I am...
View ArticleClik here to view.
KW-AVX720 Head Unit Repair
I have a head unit that is not powering up, i cant get a image on the screen. it apears to very very similar to a florecent tube backlit tv. at first i thought it was a bad bulb so i soldered some...
View ArticleRIAA triode or pentode
well I know ... there are zillions of discussions and schematics out there and I am considering many of them, but would somebody of you share bad/good experience with pentode RIAAs? gianluca
View ArticleHow to remove the front panel on a Harman Kardon 330B
I just bought a Harman kardon 330B at a thrift store and it works great, but it looks like the power button took a pretty hard hit. I'd like to see if I can straighten it out, but am having a hard time...
View ArticleClik here to view.
Recompensating a Stasis 3
I've rebuilt a defunct Stasis 3 amp with blown outputs on one channel. I replaced the outputs in both channels with MJ21195/MJ21196. I recapped and replaced the transistors on the input board. I used...
View Article4th order enclosure for 2x Hertz HX300D
Heya! I just bought a Audi A4 sedan with some car audio stuff included. The front system is doing well but the subwoofers is currently playing alone in the trunk in a 19L sealed isobaric box. The subs...
View Article4 - 2 x 15 reflex bass cabinet help
Hi there, i'm new to this place, seems like a helpful one too. So I ask you please help me out if you can? I currently own 4 - 2 x 15" reflex cabs, the dimensions are 60x60x85cm. I will place a good...
View Articleline frequency conversion
I need to down convert a 1000Hz power signal to 60Hz with minimal power loss. Where should I be looking?
View ArticleClik here to view.
Help with Motorola Horn tweeter
A good friend of mine found these little buggers in his stash. He bought them at around 1990 after ready some raving reviews about them, but he cannot remember any specs for them. We tried them as a...
View ArticleLEAK T12 , Point one vs QUAD ?
I've recently acquired a QUAD 33 pre amp , LEAK T 12 power amp+ and LEAK POINT ONE amp ( for (for 550 UK p ounds). 1. Which configuration would you use in this case ? 2. Is the mono sound really...
View Article10" Sub recommendation. Dayton RSS265HF-4 ? How about amp?
It's very hard finding subwoofer recommendations online that are by people who care for audio. I'm sorry this question is vague. How would a Dayton RSS265HF-4 or a RSS265HO-4 do in a car? Are the more...
View ArticleAny news on F5Tv2/3 pcb?
I guess not only I interested in boards for this amazing amp... :-)
View Article