Makin’ Mic Pre’s – The SSL9K 4 Channel Mic Preamp
Here’s my latest endeavor. The SSL9k 4 Channel Mic Preamp. Here’s what I’ve done so far. Power supply, Balancer, and one Mic Pre board are stuffed and ready for testing. The power supply tested at +17.99v, -18.2v and 44.8v so we are looking pretty good there. Next I have to wire up the other two cards, get the gain switch going and plug in a mic and see how it works!
One channel done and mounted.
Close up of Channel 1 and Balancing Amp
More Progress. I fired up channel one.
- NO SMOKE CAME OUT!!! = AWESOME!!!
- PLUGGED A MIC IN ONE END AND SOUND CAME OUT THE OTHER!!! = AWESOME!!!
- IT SOUNDED LIKE CRAP!!! = NOT AWSOME!!!
So there was some troubleshooting involved. After swapping out one of the 5534′s it sounded MUCH better.
Channel 1 wired up.
Gain Switch.
Then I got started on Channel 2. This one went much faster than the first. What took way longer, though, was wiriing all the connectors and switches. Eeesh what a pain! But it’s all wired up. I plugged it back in and Channel 1 still works and Channel 2 seems to be working too. The gain seems roughly the same between both channels. +48 is also working on both channels.
Two channels all wired up.
Two Channels wired close up.
My makeshift front panel. This is temporary.
In the rack.
Logo.
UPDATE!!!
Finally finished channels 3 & 4. Had some issues with thermal shutdown on the power supply but that was fixed with a couple of these:
Couple of heat sinks and now she runs like a top.
Here’s all four channels installed.
Little spaghetti like, but I’ve seen worse.
