So, I was cleaning out old boxes for a recent move, and found an unbuild 41Hz AMP9 kit still in it's plastic bag. Was thinking of building it up and using it to repower the old 1965 intercom system in my 'new' house.
No paperwork with it, though.
What are the odds anyone has got some old pdf's for this thing? I know 41Hz is long-gone - and I found schematics on here for the AMP9-BASIC - but that's not what I've got. As far as I can tell, it's just called AMP9 Low Profile / 14.5V.
No paperwork with it, though.
What are the odds anyone has got some old pdf's for this thing? I know 41Hz is long-gone - and I found schematics on here for the AMP9-BASIC - but that's not what I've got. As far as I can tell, it's just called AMP9 Low Profile / 14.5V.
41hz amp9-basic asssembly instructions
I may have a copy backed up somewhere, need to dig out the old drive and can look through it.
I may have a copy backed up somewhere, need to dig out the old drive and can look through it.
Yeah, as I mentioned, I had found the files for the AMP9-BASIC - but this is a different board entirely.
Not a whole lot out there according to google, but here are a couple threads about the amp9 low profile. You could try reaching out to some of the forum members who have built the amp9.
41hz amp9 rev 1.01
TAA4100A - Bridging or Parallel?
41hz amp9 rev 1.01
TAA4100A - Bridging or Parallel?
Hi Michael! It has been quite a while but need to visit my favorite forum at least once a year 😉
I made so many of the smaller 41hz amp kits back in the day I just had to check around for assembly instructions for the sake of nostalgia. Still have one of my own designs that gets used every now and then.
I made so many of the smaller 41hz amp kits back in the day I just had to check around for assembly instructions for the sake of nostalgia. Still have one of my own designs that gets used every now and then.
Yes - I built a lot of kits.. Mostly AMP4 I think. I have some bagged up kits left over, but maybe not the instructions.
I mean, If I don't find someone with it, I can likely use the AMP9 basic as inspiration. I believe most the difference was the inclusion of the power supply - which SHOULD be simple enough. Would take a lot longer to do it that way though - which means I probably won't get around to it.