Search results

I forgot about my thread on my first PL400 so I'll update. Had it evaluated before any mods. Tech gave it a clean bill of health. Minor offset adjustments and away we went. First two steps were transformer isolation and power cap replacement. All went well except I missed the nylon washers...

Me :)

Maybe I should have written variable input attenuation control device?

I think gain controls would be a great option...a power switch with soft start or a relay... I know this adds expense and some don't see these as necessary or adding value to a build, but for a lot of us it's a hobby and a nice convenience.

I remember this coax. We used it for sound systems on bizjets. Used a special solder sleeve termination with 2 pigtails for Phoenix connectors. Good stuff.

Curious as to the details on the shielded wire used for the signal inputs. What brand and gage?

I ordered the soft start board. Got it from Ali express. Ebay wanted twice the price.

Not till a tech goes through it first. I don't have the test equipment to do it right.

How did you build it?

Copy that.

Yup, did every bit of what you suggest the day I got it. Seller had pics of it plugged in (VU meters lit). Inside was clean, all fuses good. All original inside. Original output transistors (Outputs XPL910, date code 7547 Drivers SJ2741, date code 7439). I'm thinking it was built early 1976...

I haven't done anything to this amp yet. Honestly, I haven't even plugged it in yet. I have the capacitor upgrade, new output and driver transistors, and the DCP mod on the shelf. I am taking it to a highly qualified friend to go through it first and make sure it's in good condition. Ya never...

I have a pl400 series 1, 8 fin. No switch.

Greetings all, long time lurker here. Been schooling myself on the wonderful mods and upgrades these amps get, but I haven't come across a mod to install a proper power switch. Is it even an option? How do y'all power up/down?