20 Most Recent DBX 1231 Home Equalizer Questions & Answers

they are not that complicated...

What the voltage is transformer out put

is there an in out patch on your bass amp?

regulation zeners are shorted

I downloaded them once. I don't remember from where. I probably still have the file at home, but I don't really want to post my email. There's a separate identical power supply circuit for each side, if you swap them and the problem doesn't swap sides, then both power supplies are good. More likely the bypass relay for that side is dirty and blocking signal. They pass the signal unchanged when the unit is turned off. They are little boxes on the in/out connector board and can't be cleaned because they have no openings. If you can solder, it's a relatively straight forward fix. The challenge is finding replacement relays that operate on the same voltage and have the same pin configuration. If you do replace them do both sides, because they are the same age and you want to fix this problem only once and have both sides the same.

Dirty relay contacts are a likely the culprit. The relays bypass the circuit when the unit is off. They are located on the in/out board.

I would replace the fader. You may try a cleaner made for faders eg. doxit

Always start from flat( sliders all in the middle) . If you are eqing for feedback open up your microphone volume to where they just start to ring, and then back down just under the point where they ring. SLOWLY and individually slide up slightly each slider one at a time in the range you think the ringing is coming from (low, mids, highs). When the ringing starts to occur back that slider under the middle setting down maybe 3 db to 6 db. Keep repeating this until most all of the ringing stops. The main trick here is to not slide too many sliders below the middle. If you do, you will actually start losing volume in the whole sound system.

If you are eqing the system for the room, gradually add or take down sliders while listening to a band or music. You can be a good judge here by making an adjustment, and then walking around the room to hear the difference. Practice makes perfect here. Keep in mind most speakers will not produce sound below 40hz, so boosting 20hz or so will not help. By the same token most people over 25 can't hear above 12-16khz so the same is true here. Good Luck

Hi,

You can use it in the master insert (unbalanced) or behind the master output (balanced).


Regards
Gerard

check out the makers web site for all your equipment manuals

when starting up never make loud always check things working ok at low level

Check out 12 Series User Manual might help you.

Find it on the Web, or on YouTube instructions. Or get into DBX page and download it. Simple.

Dbx dav 600 hook up instructions wiring diagram Google Search hope this helps....pete