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8th note Balanced Stepped Attenuators
Dear builders and DIY enthusiasts! Here I would like to introduce You my passive stepped attenuators I build and offer for sale. The 8th note Stepped Attenuator has been developed to replace classic...
View ArticleSurplus Equipment For Sale...
Please note that all this equipment is surplus from the Disneyland Resort and most of it has been used in either the Disneyland or DisneyÂ’s California Adventure parks. Some items, (speaker cabinets and...
View ArticleMy LM4766 + 6p15p project, and LM1875 project.
Hi. I thought it would be interesting to show my pcb to others, hear opinions, etc. After failed search for LM4766 pcb on internet, i decided to route myself. Because all pcb's i found on net was...
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"Diamond" tube preamp with 12au7
Hi guys! I want to create the tube preamplifier or tube buffer under this schematic. If anyone has some schemes comments let go. Any help is welcomed. Just please tell me what is wrong what's wrong...
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FS: Pair ofLundahl Input Transformers LL1531 - 1 + 1 : 2 ex equipment tested...
Pair ofLundahl Input Transformers LL1531 - 1 + 1 : 2 ex equipment tested working: Listed on ebay: Pair ofLundahl Input Transformers LL1531 - 1 + 1 : 2 ex equipment tested working | eBay Attached Images...
View ArticleTechnics Computer Drive biasing problems
Hi, I've got a 31y/o Technics SU-V707 with Computer Controlled AB biasing. I've been having problems with sibilance so went inside to have a look at the amp - all caps look fine, but the bias was way...
View ArticleHow important are dimensions if the volume is the same?
I used to have a set of commonsenseaudio 1.3 speakers that I quite enjoyed the sound of. I'd like to build another pair, but now I'm wondering how important the actual dimensions are as long as the...
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Anyone speak Chinese?
I have a problem with a TDA2030 amp and need translation. Can anyone tell me what this says? And this: Many thanks for your help :)
View ArticleBest budget Tripath board at Parts Express?
Hey guys, I recently bought a Lepai 2020 amp from amazon and it was DOA. When powered up the blue light comes on and it makes a slow steady clicking from the right channel but plays no audio. I tried a...
View ArticlePerreaux S150B oscillation
My Perreaux has an oscillation problem. Please whatever insight or experience you may have. Its sine wave falls apart when power is applied. Oscillation is the big problem and is occurring on both...
View ArticlePortable Hifi driver suggestions
I am not sure if anyone can help me but I thought I would ask. My current portable hifi is primarily made up of three enclosures housed in a simple plywood box. I can use it as a self-contained boombox...
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JL audio 500/5 repair question/validation.
Hello all, I am currently in the process of repairing a JL audio 500/5 that I picked up for a fair price. I've traced down what I think is the cullprit and want validation on what I am about to...
View ArticlePioneer A441 Amplifier
Does anyone have any experience of this amplifier. It is labelled as a "non-switching amplifier - a configuration seen sometimes in the 1980's, I think. I assume this would involve biasing of OP stage...
View ArticleRockford Fosgate Punch 360.0 Static
I have a problem with static on 2 channels. The strange part is , its not always the same channels . It is either Chanel A or B and occurrs on both speakers on the channel with the staic.There doesnt...
View ArticleParallel Push Pull 6V6 design
Well this project started life as a Parallel push pull 8x EL95 amplifier, and there is a thread for this already. I finally gave up trying to squeeze power out of eight EL95 tubes, and went for JJ...
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FA607 questions
Hey all, Wondering if I could get some help figuring out how to finish up the wiring for the kit I've been working on. I have a few questions. 1. I have a 10k Ohm audio pot that I was planning to use...
View ArticleHow is an acoustic amp different from a regular amp?
...and why is it preferable to use for playing harmonica? And how do you get from a 200k ohm impedance mic to the input of an acoustic amp?
View ArticleNoise in audio when charging USB
OK so I just finished adding a USB charge port to my battery powered amplifier. but when you plug in a phone to the USB to charge it I get pretty nasty noise in the audio signal. Is there easy way to...
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