25th Anniv style Wiring mod on an Axis.

[brownpants69]

Hi

Whats the deal with the 25th model wiring? Is it possible to achieve something similar on any 2 humbucker guitar?

I'm looking at installing Dimarzios on my Axis MM90 (I know! I know! I said I wouldn't mod it- but I can't stand the hum when recording or playing at volume etc etc... even with the silent circuit).

Could I acheive similar sorts of sounds with push-pull pots? And should I go for a 3 way or 5 way switch?

Cheers
Mark

 

[Jack FFR1846]

Mark,

I'm doing all kinds of web research on different switching options and it does look like, in theory, the switching options of the 25th can be done with an Axis. But with your guitar, you'll need to first switch from the 3 way switch to a 5 way. After that, you'd need to add a series/parallel switch. You talk about doing push/pull pots, which might also be possible. I need to look into that myself to see exactly what's switching and how, before I can really answer the question. Having a separate series/parallel switch, like the 25th has would certainly make it simpler. I'm looking into these options....trying to get the most out of the humbuckers in the sub-1 that I'm modifying.

jack

 

[bkrumme]

Hi

Whats the deal with the 25th model wiring? Is it possible to achieve something similar on any 2 humbucker guitar?

I'm looking at installing Dimarzios on my Axis MM90 (I know! I know! I said I wouldn't mod it- but I can't stand the hum when recording or playing at volume etc etc... even with the silent circuit).

Could I acheive similar sorts of sounds with push-pull pots? And should I go for a 3 way or 5 way switch?

Cheers
Mark

It's definitely possible, otherwise MM wouldn't have been able to do it with the 25th. At least a 5 way switch and a DPDT would be neccessary. Without drawing a diagram for it, you may need 2 DPDT switches. If that's the case, an Axis would need some drilling to accomplish the same switching.

 

[brownpants69]

I'm glad I'm not the only one who comes up with these sort of hairbrain schemes!

Im contemplating doing this with a push pull on each pot now I've looked into it. There is a wiring diagram for Series Parallel on a DPDT here:

GuitarNuts.com - Humbucker Switching

But you need one switch per humbucker. So with a 3 way switch you could a acheive serie/para on each humbucker individually. I think it would be fiddly, but I could probably live with that many combinations. Wouldn't require drilling. Any thoughts?

It's a shame there isn't a quadrouple pole swith or push pull....

 

[balance]

You have an ASS? If so, you already have the 5-Way Switch, right? If that is the case, you only need a single Push/Pull pot in either the Volume or Tone Position to accomplish the Series/Parallel Mod.

 

[brownpants69]

It's the MM90 model- includes a 3 way switch. I think I would need 2 switches to series/parallel switch each humbucker. Or am I barking up the wrong tree?

Here's an idea... Anyone got a wiring diagram for the 25th model?

 

[Jack FFR1846]

The wiring diagrams are normally available for each instrument on the Musicman site. As of this writing, they're all down (I've been looking all day). A possible option is a rotary switch in place of the tone knob. The 25th has a LOT of different options.

jack

 

[balance]

Use a concentric volume/tone pot and 5-way rotary switch. The 3 way switch could be used for series/parallel/split.

 

[beej]

I'm not sure of the specific switching on the 25th, but for series/parallel you'll need a DPDT for each 'bucker. So that means two push/pull pots, or one 4PDT toggle.

I've wired up a series/parallel toggle on a few occasions (including my Morse at one point). If you use a 4PDT on/on/on then you can wire it for series/split/parallel and also get the split positions which can be good as well.

 

[brownpants69]

Thanks for the suggestions.

If there was a 4 pole switch that was 0n/on that would be cool. I don't really want coil splits as there is the noise issue- and I'd be back to square one.

I'll happily lose the silent circuit on this one. Which will leave me with a spare silent circuit... anyone intersted?

I think at the moment 2 push-pull pots look quite promising, but I'm not sure if it might be a bit fiddly. It would give some cool switching combinations though.

Anyway, I've ordered the Dimarzio DLXs and I am going to arrange getting the guitar into a local tech who will do the routing, so I have some time to muse upon the wiring for a tad while longer.

 

[Jack FFR1846]

I just went through the wiring (on paper) and 2 push/pulls would work. Each push/pull gives you a series/parallel for 1 humbucker. The cool thing is that you're not limited to series OR parallel.....you could run one in series and the other in parallel. If you used the volume part of the push/pull as a volume for that particular hum, you could balance out the volumes so as to get some unique sounds. That sounds really cool to me. Oh, also, why eliminate the silent circuit? Hum-->push/pull-->that pp vol-->pickup switch-->silent ckt-->out

jack