tube choices for an ST70
So a little over a year ago I got an ST-70, and replaced all caps and resistors. I got the WC tube kit from tubes and more, and with maybe the 40 hours or so of running, the tubes on one channel would...
View ArticleAny educational readings for speakers?
I'm planning on doing a research project on speakers and I was wondering if there were any guides online to tell me about how speakers work. Such as the build behind crossovers and cabinets or how an...
View ArticleSpeaker recommendation for 3 cu-ft sealed box (NHT1259 replacement)
Hello, Does anyone know a good subwoofer for a 3 cu-ft sealed box? I will use it for movies and music concerts. I have a KG5230 amplifier and this speaker will be a replacement for a old NHT1259 that...
View ArticleClik here to view.
Need help identifying TI transistor...
Fixing up an old Stylophone 350S, and some of these these transistors need replacing. Can't find anything on the internet so far, is this before standardization in the coding? Markings say: E5383. Is...
View ArticleAmplified Parts, Indeed
I looks like AES has changed their name and business model, contracting their offerings - unless I've been unattentive in some manner, it looks like they're only dealing in new tubes now, with no NOS.
View ArticleAudionirvana new "classic series" FR without whizzer cone
I see some kind of announcement on the commonsenseaudio page, but no information... Any info? :confused: David? :D
View ArticleClik here to view.
Linear ATX power supply
Well, not quite ATX as it doesn't fully conform to the standard but certainly does the job. Some time ago i bought a Streacom fanless case and built a small headless music PC around an Intel DH77-EB...
View ArticleHelp with speaker simulation
I am an amplifier Guy ... not much in the speaker issues . Spare me a moment to explain what i want . I repair amplifiers so i need a speaker that will be a very near field monitor low powered and...
View ArticleAudio amplifier with damping factor>200!!
Hi guys! I need schematic of a transistors audio amplifier with damping factor >200 and output for RMS power Po = 50...100W/4ohm, with power supply Ucc=+/- (35....40)Vdc. Thanks for your help!
View ArticleAmp kits.
Can someone please explain to me how things like this work, 200W Power Amplifier : Audio Amplifier Kits : Maplin Electronics Thinking about making a sub I have active and need amp, this is just an...
View ArticleLL9206 MC Step Up
Pair of LL 9206 MC step up transformers with K&K PCB for each. Will also include inverse RIAA network for testing your Phono Amp project. Any reasonable offer. Sheldon
View ArticleLucky freebie find
My retired neighbor runs a small recycling business out of his small side yard, and does tig-welding for fun. So he rides around looking for scrap. Anyway, he was riding around on his bicycle and...
View ArticleClik here to view.
Dayton Audio RS Mid and Vifa Tweeter
I have a brand new in box pair of dayton audio rs midranges. you probably know what these are but heres a link.. Parts Express 60 Shipped Also brand new are a pair of tang band 302SH tweeters...
View ArticleClik here to view.
Zenith 360° Omni Speakers Remember 'Em ?
Do any of you remember these Zenith Omni speakers ? I haven't seen them or any technology like them anywhere since the 70's. I'm thinking of making something like them with a decent concentrically...
View ArticlePort Question
I have a question regarding internal port clearances. Is there a general rule of thumb to follow when it comes to how close a port can be to a rear baffle? If I have a 2" dia flared port that is 1.5"...
View Articlewhere to get speaker drivers matched into pairs
I have 7 scanspeak tweeters and 7 usher 7" midrange drivers I am using in a hometheater 7.1 system. I would like to find a place where I could send them to get them tested and placed into pairs except...
View ArticleMTX THUNDER 8302
Outputs are shorted.. They are SSP45N20A.. Is there a good replacement for them??
View ArticleWTB: HP 8640
Thought I'd put my lure in the water and see what bites. Looking for one, but not in any hurry to buy. Let me know what you've got, OPTs, etc., and what you want for it. Thanks! Philip.
View ArticleCoverage Angle for Wave Guides
All, Can anyone explain the effect of a waveguide coverage angle as it relates to effectiveness/distortion/response etc... Thanks
View Articletransformers
Hi iam biulding a alembic type pre amp and need a compact power trans I was looking at a stancor lb-12230 I need about 300 volts so will this work has any one eles used one thanks
View Article