Here are my LM3875 boards, fully built, tested and ready to put in a chassis. I did build a big bad *** amp based on these but then I got offered some crazy good speakers which needed more power, more on them to follow as they are up for sale soon. So I never really got to hear these but those that have love them, to be fair I have a problem holding onto stuff and i dont even listen to music, but I do like to build....
All soldering done with Cardas silver solder purchased from hifi-collective, I clean all leads with IPA prior to stuffing and wash the PCB's with Safewash on completion, these are the best boards Peter sells, carefully selected high grade parts and I have upgraded the PS caps for the sale because I siliconed them to the case for reasons I cant explain. (aka OCD) Its worth reading a bit if you havnt seen these. LM3875 Kit – Audiosector I also purchased the add on rectifier kit to make my amp dual mono, here is a pic.
I should mention that Peter hasnt updated his site for a long time, those hand made gold plated PCB's where superseded by the versions I am selling. PCB's on their own with 2200uf instead of 1500uf £70. plus post.
Also for sale.....
2x 300VA 25V transformers from my build, these are quite substantial and allow for a dual mono construction, £45 the pair plus post. (fitting kits included)Error page | eBay.
Also for sale...
Totally against the very ethos of Peters design, a pair of speaker protection circuits, these are stereo but I used 2 to make it dual mono from the volume out. I did a lot of research and I found a lot of posts saying these could not be detected in the signal, worth it if you have very expensive speakers! These are Velleman K4700, they come as a kit but you dont need to build em because I already have, and they have been tested! I will include the instruction book, these have been built for the gain clones. These just need 230v supply. £30 plus post.
alternatively buy the lot for £120 plus post. Paypal friends please or welcome to collect, I live Nr Reading. RG75RS.
All soldering done with Cardas silver solder purchased from hifi-collective, I clean all leads with IPA prior to stuffing and wash the PCB's with Safewash on completion, these are the best boards Peter sells, carefully selected high grade parts and I have upgraded the PS caps for the sale because I siliconed them to the case for reasons I cant explain. (aka OCD) Its worth reading a bit if you havnt seen these. LM3875 Kit – Audiosector I also purchased the add on rectifier kit to make my amp dual mono, here is a pic.
I should mention that Peter hasnt updated his site for a long time, those hand made gold plated PCB's where superseded by the versions I am selling. PCB's on their own with 2200uf instead of 1500uf £70. plus post.
Also for sale.....
2x 300VA 25V transformers from my build, these are quite substantial and allow for a dual mono construction, £45 the pair plus post. (fitting kits included)Error page | eBay.
Also for sale...
Totally against the very ethos of Peters design, a pair of speaker protection circuits, these are stereo but I used 2 to make it dual mono from the volume out. I did a lot of research and I found a lot of posts saying these could not be detected in the signal, worth it if you have very expensive speakers! These are Velleman K4700, they come as a kit but you dont need to build em because I already have, and they have been tested! I will include the instruction book, these have been built for the gain clones. These just need 230v supply. £30 plus post.
alternatively buy the lot for £120 plus post. Paypal friends please or welcome to collect, I live Nr Reading. RG75RS.
Protection circuit
If you would like to use the protection circuits an another amp then I just want to point out the way the circuits have been built for Gain Clones. All diodes are installed but R23 to R26 have been left out according to instructions, I know these work because my PC used to spit out a bit of DC if I booted it last and the protection circuits used to click in. So its easy to change how they work, From the manual.
If you would like to use the protection circuits an another amp then I just want to point out the way the circuits have been built for Gain Clones. All diodes are installed but R23 to R26 have been left out according to instructions, I know these work because my PC used to spit out a bit of DC if I booted it last and the protection circuits used to click in. So its easy to change how they work, From the manual.
Attachments
Would you consider shipping to the US? I have a nice chassis that I built around this particular set of boards, but I blew one out somehow.
I will post anywhere! Ive given another member (tubesurf) a quote for postage to america but that included traffos, he hasnt replied yet, I guess I should wait as he said he wanted them unless he wants to get back in touch, not sure the time where he is in Guam.
Alan
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