Post by dunkelfalke on Nov 24, 2009 17:56:20 GMT -5
my bass is dead I bought the thing used, the active electronics never worked but I still could use it as a passive base. Now it doesn't work anymore because some wires came off (the bass electronics were partly resoldered by the previous owner, and he made a really ugly job doing it).
So, has anyone got the original wiring schematics or maybe some could draw new wiring schematics with a new, modern and better sounding preamp for me which makes the bass work even better as before?
The bass has got three pots, one of them is a dual concentric one, the other both are B500 kohm ones. an active/passive switch and a red led which works when the bass is active.
He says "Unfortunately, the active tone control circuit was noisy and ate batteries, so it had to go." He removed his and went passive.
On yours, you indicated that it wasn't working in active mode before it died completely due to wires being disconnected. Do you have any reason to believe that the active circuit board will work if rewired? Were all the wires to that board intact before it died completely?
If it was fully wired and not working (and given what Mr. Ratliffe had to say), you might save yourself a lot of grief by starting afresh on the active circuit. If there's a problem on the board itself, it may be a bear to locate and fix.
Hohner doesn't seem to have any schematics on their ewbsite, but perhaps if you email them they can point you in the right direction:
Post by dunkelfalke on Nov 26, 2009 18:21:42 GMT -5
Altough I am a good Hohner customer (two Revelations and this Jack Bass) they tend to ignore my mails
Yes, I also thought about starting with a fresh circuit (and contrary to that guy I love active pickups).
Active mode never worked before because the wiring itself was in a real mess. The previous owner tried to rewire some things and his wiring sucks even more than mine back when I started at Guitarnuts (and that tells a lot).
He who lives by the sword, dies by the questionable business model.
Yes, I also thought about starting with a fresh circuit
Then, the question is: Buy one or build one?
If you've never populated a PCB, you might be better off buying a pre-fab one and avoiding a lot of DIY headaches.
I bought one for guitar from guitarfetish, but haven't installed it in anything yet. It would probably work fine on a bass as well - makes your output low impedance and adds a bit of gain- cost me $20 USD. I imagine there are other similar units out on the web.
The wiring diagram would then probably follow in a logical fashion from whatever install instructions you receive with such a unit.
Pre-made units have also given some thought to miniaturization- anything you build is likely to occupy more space, so if cavity area is limited, that's another reason to go pre-made.