Just checking so for sure you can’t kill a musicman style preamp from wiring it wrong or anything right? Bass was making sound before operation, now it’s not, somethings probably wired wrong, hoping it xan be killed that way etc
Enjoy the benefits of a premium membership!
Upgrade Account
-
TalkBass has been independent since 1998. Add your voice.
Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
Join free Log in
Want zero display ads or expanded classifieds tools? Compare plans.
Can the wrong wiring kill a preamp?
- Thread starter Mrtoodamnsabre
- Start date
Applying reverse polarity voltage ("+" and "-" leads swapped) to the preamp's power inputs could damage it. Most pedal circuits are protected from reverse polarity, but not on board preamps.
More specifically can working in a phase switch do this? Or trying to wire a bass back into series mode?
or are you saying like touching the battery terminals backwards?
or are you saying like touching the battery terminals backwards?
- Apr 18, 2008
- 16,006
- 1
- 31,700
- Disclosures
- I'm highly opinionated and extremely self-assured
Just don’t connect the battery + where the - should be, and the battery - where the + should be. Other than that, it should be safe.
No sound usually means a missing ground somewhere, or a hot wire that is inadvertently shorted to ground (like maybe shielding) somewhere.
No sound usually means a missing ground somewhere, or a hot wire that is inadvertently shorted to ground (like maybe shielding) somewhere.
deepestend
Commercial User
- Feb 21, 2003
- 6,249
- 8,171
- Disclosures
- Website and Social Media at Sadowsky
You probably didn't ground things properly and that's why you aren't getting sound. That's usually been the culprit for me.
The preamp in my MM SUB5 bass doesn't have a protection diode.
You should also avoid connecting battery power directly to the preamp input or output. Maybe the preamp input has protection diodes or maybe it doesn't.
You should also avoid connecting battery power directly to the preamp input or output. Maybe the preamp input has protection diodes or maybe it doesn't.
Ah ok! So yeah at this point we’ve sorta figured it might be the chip, tech put in a different chip and that allowed signal to run through it but the bass and treble knob were no longer effecting the tone, maybe cause it’s the wrong chip? I got one of the right chips we’re gonna try that tomorrow, If that isn’t the cause could it be a pot connection? The way it’s wired to the jack? The other caps?
