Damping Factor Question
I wish to use an amplifier that has a damping factor of 40. Could someone please advise how does one increase the internal damping of the loudspeaker in a dual voice coil speaker of 8 ohms each and in...
View ArticleMiddle Controls
Hello to all! In the book Small Signal Audio Design by Douglas Self, chapter 10, page 271, where the author talks about the middle control, he wrote: "It must be said at once that middle controls,...
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CTS 2T8 tweeters - any info
Hi guys A friend of mine sent me these two tweeters that he is not using. Does anyone have any info on them? A search on the web and in the forums did not bring much info to light. I have added some...
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HK guitar amp - help with repair
Hi, I have Tubemeister 18 head. I have one problem with it. When switching from clean to lead channel there is "pop" sound. I discovered, when I stay either on the clean or lead channel for a while,...
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power/ground interference
hello there. I have a problem with my design. I have an audio design placed together with an led system which is controlled by a micro controller.They both (USB and audio)share the same Power...
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Power Supply for tri-amped speaker
I'm getting the major parts together for my active tri-amped speakers and I wanted to check with more experienced members of the forum if my plan for the power supplies are sufficient. There will be...
View ArticleRealistic Minimus 7's static/poping on bass
Hello, I have some optimus pro 7AV's which are pretty much the same as realistic minimus 7's and I've been getting some good usage out of them the past few days, pushing probably 30 or so watts into...
View ArticleScintilla Mod for SS AMps
Hey all, I am aware there is / was a mod that Krell made to KSA-80 amps to drive 1 ohm scintillas. Anyone know what it entailed? Remember reading a something about a change to the power supply to lower...
View ArticleFS: Bozehound phonostage
A tidy build. BLH RIAA, for sale. Hammond 1455 type chassis silver. Goldplated connectors. Needs an external powersupply. Pics on request. Ships from Norway. Make an offer. It cost around $150.- to...
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ETON 7-372 HEX-B Box volume need?
Don't know how much volume, bookshelf speakers。 Have friend know the speaker, how much volume? thank you Attached Images 29.jpg (82.4 KB)
View ArticleSoundbar w/ external sub - no sub volume control
So I got this Audiosource S3D60 soundbar as a B stock manufacturer refurb for under $40 an Amazon...total score...I'm pretty happy considering I have been listening to TV speakers for the past year!! I...
View Article"The World's Fastest Indian"
Wonderful movie on the local PBS station -- god bless all you Aussies who supported its production. Anthony Hopkins as an old coot who manufactures his own pistons!
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Bi Wire X Over Help
I would like to add binding posts to a pair of vintage Braun L810s. The attached shows the usual - + single wire that is part of the original setup. Is it possible to wire the X over for Bi Wire duty...
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Small "Vintage" Guitar Amp Build
This probably isn't the most exciting of projects, but I thought I'd share since I'm working on it. I'm a freshman in college (majoring in EE) and I'm on Christmas break right now. I've decided to take...
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(3 pcs) 6N8S (6SN7, 1578) MELZ Metal Base , Hole Black Plates
Lot (3 pcs) 6N8S ( 6SN7 = 1578) MELZ Metal Base , Hole Black Plates tubes. Tubes tested in layout of the tube amplifier. Ua = 255 V Rk = 1000 ohm 1) Ug = 8,9 - 8,2 Volts (X-54) 2) Ug = 8,3 - 8,6 Volts...
View ArticleTV7/CU
TV7/CU Canadian military Stark tube tester with photocopy manual and data. Works good. Email for pics. $600 OBO
View Articlehappy christmas www.pcb-audio.com
Merry Christmas and Happy New Year i wish a better 2014 !!
View Article2.1 channel amplifier
Dear all, I am from one of the begginers in electeonics hobbysists. I have some knowledge about electronics. I decided to build 2.1 channel amplifier with TDA7377 + LM4558D using schematic given on...
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Best 10" driver for sealed box 2013
Hi, this is my first post but I have read a lot of info from this forum... I would like to build a subwoofer, sealed (small box size it's a must). I want to use it mostly for music but also for movies...
View ArticleFS: Fostex compression drivers and ring radiators
Selling some Fostex stuff. All need diaphragms and willl be sold for parts. Here is what I have: *A pair of D262 1" compression drivers *A pair of T845 cateye ring radiator tweeters- one missing a...
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