6P14P-EV in my Simple P-P
Are the 6P14P-EV suitable for my Tubelab Simple P-P? I have noticed the ones that are without the EV are directly compatible with the EL84 but the ones with the EV say EL84M. What's the deal?
View Articlequestion about transformer current rating with a multitap secondary
hi, i'm sorry if this question has already been answered. if it was, i wasn't able to find it. i found a Stancor P-8621 power transformer which i would like to use to make a regulated power supply. The...
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Little Red Spiders
Hi Last week inside a Pioneer CD player and today on my multimeter, I have noticed a tiny red spider wandering around. I recall also seeing them a few years ago amongst electronic parts inferring they...
View ArticleOdd porting
My single sub PPSL box will be about 400L (14 cu ft). Tuning around 40hz. I only have one flared 6" port and even two isn't enough area. Is there a way to have one slot port and one round which I would...
View Articlesure AA-AB33184 4x ar215ps's, and a stereo only ddx 320 advice needed
I recentely purcased a mtx audio tna 251 250w rms 2 ohm amp to replace my ddx320 whose bass channel power chip blew up running a 160w 3ohm sony sub. So before finding out i could clean up the solder...
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For sale: Faulty B4 Buffer preamplifier
Reluctant sale really but I'll probably never use this again. Sold as seen with a faulty channel. B4 Buffer pre with a problem in one channel, never got round to fixing the problem but should be an...
View ArticlePlease help me with Thorens TD125 mk II fault
Hi guys I am really hoping that someone on here can help me identify a problem with a Thorens TD 125 mk II TT I recently bought. I am so keen to get this fixed as this was my fantasy TT in my teens....
View ArticleSingle supply op amp buffer - deriving bias voltage?
I'm currently designing a buffer input stage for an ADC board, and I'm wondering if the bare minimum of two resistors and a capacitor is sufficient for providing/blocking the mid rail bias voltage. For...
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Need Help - Monoblock Power Amplifier EL 34
I want to revamp two monoblock amplifiers using four EL34 tubes in the output. I would like to maintain the appearance and arrangement of valves, but use a more modern layout. I need help to identify...
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BEIJING 6S6 triode mode single-ended amplifier
这是一个极低成本的单端功放，总造价低于30美元。但是，却是音色最好的功放。6s6出色的完成了单端放大 ，以及其美丽的音色提供了0.58w的音频输出。以至于不得不使用灵敏度97DB的音箱来完成放音任务。不 过在35平方米的听音房间里一点也不觉得吃力，较大的动态依然被表现得非常好。以至于你会忘记它只有0.5 8w的输出功率。 This is an extremely low-cost...
View ArticleReplacement input button for a NAD 3020 amp
Hello I wonder if anyone can help with this. I have an old NAD 3020 amp with a missing input button. Does anyone have a spare one that I can buy? Thanks very much RAchael:)
View ArticleI want to know the wiring in the homemade lcd projector
Hey, please help me for the internal wiring of the parts to get power supply......:spin:
View ArticleWhen Rock goes Acoustic
Did you see & hear BBC 4's docu on acoustic guitar in rock music? I was enthralled. Even turned the volume up a bit. Keith Richards playing away during interview. Nice. I had a continuous smile for...
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Distortion in MTM build
I just finished building a pair of MTMs, using Zaph Audio's "Bargain Aluminum MTM" design. This system uses Dayton DA175-8 woofers and the SEAS 27TBFC/G tweeter. Crossover is at 1450Hz. Testing with...
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Part I.D. please...slueth it !
TO-12 size metal can (Same size as the LH0033), but only 4 pins + a case-ground pin. No info on the tube they are stored in. Here are the markings: Quote: PS S B SW303 8231A Testing all around the...
View ArticleWTB Buffalo II DAC
I am interested in picking up another Buffalo II DAC to add to my active setup. I have been hoping to find one here but haven't seen any in a while. If you have one and are interested in selling it...
View ArticleKings Blackloaded Horn
I have some time to start my build on a new Back Loaded horn compact design by MJ King. It looks like a fun project and I have a decent shop. Anybody other then Br. Boar build one yet? Or shall I hold...
View Article6x9 box 15L 16D 12H need port help
first of all thanks in advance iim building portable 6x9 box and the chamber is 15L 16D 12H its a bit bigger then on cubit foot. Im using Kicker 6x9 that are 140max 70 rms, my amp is 2x150 rms. Is...
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Bookshelf MLTL Enclosure for W3-881SJF
Hello everybody I design a new MLTL bookshelf speaker for tangband W3-881SJF. The W3-881SJF design with 3" p.p. cone, the piston area is smaller than W4-1320. Cross section area in W3-881SJF MLTL...
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quick tripath fix?
Anyone tried these ? T-Amp Tripath TA2024 2x15W Audio Digital Amplifier Board 320-600 Lists as "T-Amp Tripath TA2024 2x15W Audio Digital Amplifier Board". Needs power supply (12v 2amp), I have a DTA-1...
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