7 string Axis humbucker question - Jemsite
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post #1 of 2 (permalink) Old 07-12-2004, 09:48 PM Thread Starter
 
Join Date: Jul 2002
Location: Toronto
Posts: 20
7 string Axis humbucker question

I have a RG-7420 7 string. This was Ibanez's low end 7 string. (discontinued)

The Axis humbuckers are microphonic at high gain and the bridge pu has alot of hum (not fully humcancelling)

I guess new replacements would be expensive so I need info on modifying the pu's.

Q- When I parafin/bees wax dip the pu's should the hockey tape be on the pu's or put on after potting?

Q- Can I correct the humcancelling inbalance by using a digital meter to measure dc resistance as I remove windings from the hotter coil?

Q- Should the coils be exact match dc resistance or slightly off by 100 ohms for tone?
RexGtr is offline  
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post #2 of 2 (permalink) Old 07-13-2004, 08:35 AM
 
Join Date: Dec 2000
Location: Virginia, USA
Posts: 363
Re: 7 string Axis humbucker question

Quote:
Originally Posted by RexGtr
I guess new replacements would be expensive
not really. 7 string humbuckers can be had new for $60-70 and used as low as $30 each. people here on jemsite are trying to dump pairs of the DiMarzio New 7 pickups from the RG 762X guitars all the time.

Quote:
Originally Posted by RexGtr
Q- When I parafin/bees wax dip the pu's should the hockey tape be on the pu's or put on after potting?
unwrap, then dip, then put back on, and then you can dip again. parafin wax is flammable, so i highly recommend reading an on-line tutorial on how to do this [melting in a double pot].

Quote:
Originally Posted by RexGtr
Q- Can I correct the humcancelling inbalance by using a digital meter to measure dc resistance as I remove windings from the hotter coil?
i find it highly unlikely that this is the reason for an audible hum. sure, the two coils could be off a little bit, but i don't think they'd be so far off as to cause loud buzzing.

more likely, the noise is from incomplete shielding, in the pickup or in some of the cavities in your guitar. you can shield more over the conductive paint with copper foil. you should also "star ground" all the ground wires to one point in the guitar, if you haven't already -- this reduces noise as well.

messing with the hair-thin wires of the pickup windings is very difficult and almost always a recepie for irreversibly destroying the pickup.
Scott of Actual Time is offline  
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