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Chip amp hookup
I have a couple of STK4044 modules. I am about to attempt firing them up. The PCB has labels -VDC, +VDC, Gnd, Gnd, Gnd, +sig, +sig, HP, HP. I am assuming, that sig+ is the input for each respective...
View Article10M45 current source
Hi, I have a single ended tube amp., the front end tube is driving the power tube(KT88) via an anode resistor. I like to replace the anode resistor with a 10M45 current source. My questions are: 1. Do...
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Redoing grease under transistors shorting out now
Hello everyone, I have a mtx amp that had some type of silicone pads under the transistors. They we're somewhat dried up. So i used ceramique 2 by arctic silver, Suppose to be non conductive. After...
View ArticleDrums in super slow motion
See what makes the sound. Amazing stuff. Snare & Cymbal in Super Slow Motion - YouTube
View ArticleWhy do modern PP OPTs have 16 Ohm taps?
It seems like almost all standard PP OPTs from different manufacturer have 16 ohm taps, even though there are hardly any modern speakers that are nominally rated at 16 ohm. Is there any other reason...
View Articleamp emits low voume sound itself
FRIENDS!. Recently i buid a tip35c amplifier(pcb got from scrap market) with capacitive coupled output,single ps 60v. After completing assemble. I tested in quite room with speaker connected its...
View ArticleWelcome!
On behalf of Sonic Craft, myself and Shawn Walters are very happy to be here! We look forward to many informative and entertaining discussions of Sonic Craft and all things audio. Best regards, Jeff...
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Alpine MRP-M450
Got this amp from a friend. It looks very cheap and poorly built, so I dont want to spend alot of time on it. He replaced the outputs before and said it would play fine in stereo but when you bridged...
View ArticleQuestion regarding 7199 Tube wiring
A friend brought in an old console stereo SE power amp he retrofitted with a 500k dual gang volume pot and a pair of RCA signal input cables. The amp utilizes a pair of 7199 tubes feeding a pair of...
View ArticleLinear Power Supply - How-To
Can anyone point me to a resource where I can learn about designing and building a linear power supply for Class-D amps? I've seen lots of photos of amps with toroidal transformers and banks and banks...
View Article8ch cheap (chip) amplifier for sound art
Hello, I'm looking to build an 8 channels amplifier for sound art (installations, theatre...) and would appreciate some input as to best suited design. The goal is to have an ultra inexpensive and...
View ArticleRebuilding Duntech Sovereign Crossovers
I just picked up a pair of older Sovereigns. Ouch. I'm making preparations to rebuild the Crossovers. I have settled on Mundorf MOX resistors, but have not settled on which capacitors. There are some...
View ArticleYamaha CA 2010 meters behaviour
Firstly, please excuse the novice question. Just taken delivery of a Yamaha CA 2010 and before hooking it up to my system, plugged it in with no speakers or sources connected and turned it on to see if...
View Articlecrossover
I would like to do the speakers for amplifier 60W RMS / 8 ohm. I watched the speakers Woofer Beyma 8BR40/N - 50W RMS, 35 - 6000 Hz, 90 dB, 8 ohm or 8BR40N - 50W RMS, 35 - 6000 Hz, 90dB, 8 ohm ( whitc...
View ArticleNad 541i loading delay
Hi, I've got a Nad cd player 541i, the problem is with the reading disc, there is about 10 sekunds delay before it starts reading the disc, in the meantime doing nothing, just flashing lcd, after its...
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Hello from another "boombox" TA-2020 Canadian user
Hello Everyone I have been playiing around with a few Lepai 2020 and have just ordered a Helder MK3. Nothing Like what "the boominator" is building. But then again my projects maximize ---the " as...
View ArticleEv
Hi guys, new to this so please be kind. I have some ev elimators and one of the drivers has about had it, I think there 8 ohm 350w. I also have some drivers from a ev force I 25 but think these are 4...
View ArticleEv eliminator
Hi guys, new to this so please be kind. I have some ev elimators and one of the drivers has about had it, I think there 8 ohm 350w. I also have some drivers from a ev force I 25 but think these are 4...
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Help me identity this amp
I got a pair of these and I'm not sure what they are, they look to be too old and well built to be home made. Only marks are HT-1-101. Tube layout is 2 5881 5v4 2 6SN7. Any help would be greatly...
View ArticleMaplin Newton Valve preamplifier
I have new Maplin Newton Phono and newton Power supply PCB,s I purchased these new as spares when I started this project some years ago but they are no longer needed. Would there be an interest in...
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