Godo day all.
I just built the APEX speaker protect circuits for my AMP CAMP AMP, but Im struggling to figure out the connections for these circuits. Could someone please advise on a schematic for it please. Image below is what I have built
Thanx for the absolutely great site.
Regards
Cedric
I just built the APEX speaker protect circuits for my AMP CAMP AMP, but Im struggling to figure out the connections for these circuits. Could someone please advise on a schematic for it please. Image below is what I have built
An externally hosted image should be here but it was not working when we last tested it.
Thanx for the absolutely great site.
Regards
Cedric
You need to link to the thread describing the apex speaker protect circuit. Then a list of materials you built it with.
If a packaged device you bought from ebay/amazon/alibaba, you need to provide a schematic & a picture.
Your picture didn't load. Perhaps because you are new, perhaps because you didn't go advanced and load the picture up from your phone or PC hard drive.
As far as I knew, apex whose designer is Mike Stavkovic doesn't sell anything. He just gives away design drawings, which are often pretty good. His trademark isn't registered or trademarked and any other entity can call themselves Apex by registering the name in the jurisdiction that they do business in. But diyaudio regulars know Apex as Mike Stavkovic.
If a packaged device you bought from ebay/amazon/alibaba, you need to provide a schematic & a picture.
Your picture didn't load. Perhaps because you are new, perhaps because you didn't go advanced and load the picture up from your phone or PC hard drive.
As far as I knew, apex whose designer is Mike Stavkovic doesn't sell anything. He just gives away design drawings, which are often pretty good. His trademark isn't registered or trademarked and any other entity can call themselves Apex by registering the name in the jurisdiction that they do business in. But diyaudio regulars know Apex as Mike Stavkovic.
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That is Mike Stavkovic's logo, but he doesn't make or sell boards. A lot of people here do make boards, but the only legal way to get rid of the waste here in the US is rent a 55 gal waste barrel for your 6 oz of waste from a waste processor - about $450 10 years ago, plus $15 a month as long as you keep the barrel. I don't make boards for this reason, I build point to point circuits. I refuse to purchase from a country that - well, we'll not discuss my reasons here.
The "amp out" pin goes to the "speaker" terminal on your amplifier. usually marked "left", or "right" on a commercial amp. The "spkr" terminal goes to your speaker hot. The "gnd" inputs on that side go to the amp speaker return, and the speaker's return terminal.
On the other side, the "12 vac" goes to the hot of a wall transformer, and the "gnd" goes to the return on that device. There is a picture, usually black on black, on all wall transformers saying which pin of the barrel plug is which. If you don't have a 12 vac transformer, you can buy a triad from farnell.com . Get the barrel receptacle on the same $10 freight bill.
The "pro" terminal doesn't make any sense to me. Perhaps the input from a thermal switch or other device, but running it through a 100 uf cap means it is not a logic input.
The "amp out" pin goes to the "speaker" terminal on your amplifier. usually marked "left", or "right" on a commercial amp. The "spkr" terminal goes to your speaker hot. The "gnd" inputs on that side go to the amp speaker return, and the speaker's return terminal.
On the other side, the "12 vac" goes to the hot of a wall transformer, and the "gnd" goes to the return on that device. There is a picture, usually black on black, on all wall transformers saying which pin of the barrel plug is which. If you don't have a 12 vac transformer, you can buy a triad from farnell.com . Get the barrel receptacle on the same $10 freight bill.
The "pro" terminal doesn't make any sense to me. Perhaps the input from a thermal switch or other device, but running it through a 100 uf cap means it is not a logic input.
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AFAIR that circuit is available on this forum for free, I have never used it but I think the protect goes to a emitter resistor this of the power amp. You can search on this thread. Hope you get sorted.🙂
100W Ultimate Fidelity Amplifier
100W Ultimate Fidelity Amplifier
Thanx guys. But what concerned me was the 12vac part. This means thsi unit runs on 12vac and not 12vdc?
SIR! You are a star. Really, this is exactly what I was looking for. Now I can wire it all up and listen to my Amp Camp Amp. Thank you and have a blessed day further.
Regards
Cedric
A pic of my Amp Camp Amp
12inch Mission MS800 driver with the MS800 plate amp in the middle, and then my repurposed Onkyo SC90 mkII's, mids and tweeters replaced as they weretotally shot, beyond repair. Cabs still have to be finished off with veneer, and the side edges round. I have to wait for the company to open up, its lockdown in South Africa, non essential shops, companies are closed.
