Skip to main content

Altec 1567A mixer hum, help needed

I got an Altec 1567A mixer and hooked up a line level signal (like a CD player) to input 1 octal socket pin 7 hot and 8 ground. Pins 5 & 7 are linked. The output is connected to output octal socket pin 7 hot, pin 8 ground. It has a bad hum/low frequency buzz, I think its the way its hooked up. I don't think its the unit itself and I tried lifting grounds on everything except the mixer.

Vintage preamps - Altec 1567a tube mixer - help?

I just purchased an Altec 1567a Tube mixer on ebay. I use an apple powerbook w/ mbox. I'm one of "those guys" who don't know sh*t about the schematics of vintage gear (yet), but am in love with their sound. I've been recording on everything TUBE and 2" machines at a few studios ... just never ran the stuff. I've used these as preamps before, and they definietly kick some ass...