Hi, have ordered this kit from ebay, anyoe that have som bad experiense with it?
http://item.mobileweb.ebay.com/viewitem?itemId=260912360644
Or Any advice on changes i need to make?, Or mods, would be Nice with a volume knob
http://item.mobileweb.ebay.com/viewitem?itemId=260912360644
Or Any advice on changes i need to make?, Or mods, would be Nice with a volume knob
Changes/Mods?
Wait until you build it first 🙂
If anything, worry about good grounding and layout.
As of a volume pot, just stick one between input jacks and PCB input pins.
2x50K Log/Audio is fine.
If hard to find, 100K does work properly and is usually stocked by more suppliers, although the "big ones" such as Mouser or Digikey have lots of stuff.
Wait until you build it first 🙂
If anything, worry about good grounding and layout.
As of a volume pot, just stick one between input jacks and PCB input pins.
2x50K Log/Audio is fine.
If hard to find, 100K does work properly and is usually stocked by more suppliers, although the "big ones" such as Mouser or Digikey have lots of stuff.
great thanks ! have been reading up now, great link
Stereo Speaker Protection DIY Kit Components | eBay thinking of getting this kit aswell
Stereo Speaker Protection DIY Kit Components | eBay thinking of getting this kit aswell
So here is a some uppdates, the gainclone is up and runing, get a littel hum when there is no audio playing, but gives a good sound, waiting for my speaker protection system
schematic for the wiering and gnd https://dl.dropbox.com/u/15996745/bajs2/au/its.png
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
schematic for the wiering and gnd https://dl.dropbox.com/u/15996745/bajs2/au/its.png
You can probably eliminate the hum if you simply tightly twist together each pair of wires, with about 4 turns per inch. Do an especially good job for each pair of transformer wires, ALL the way to both ends of each pair, for both primary and secondary pairs. And also do an especuially good job for the input signal/ground pairs. Make sure the two wires in each pair ALWAYS and everywhere stay right together, and are twisted tightly.
Also, try to keep all of the low-level sinal and ground stuff as far away as possible from the AC stuff and from the outputs. If they do have to get close, keep them orthogonal to each other, and never parallel.
Oh, and input signal AND GROUND should NOT connect to the chassis at the jack. The jacks should be insulated from the chassis. The input signal ground should only connect on the PCB.
Also, try to keep all of the low-level sinal and ground stuff as far away as possible from the AC stuff and from the outputs. If they do have to get close, keep them orthogonal to each other, and never parallel.
Oh, and input signal AND GROUND should NOT connect to the chassis at the jack. The jacks should be insulated from the chassis. The input signal ground should only connect on the PCB.
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