2 ZoneWiring Harness
Introducing a totally cool mod for
you Jazzmaster® that requires absolutely no visual changes to your
instrument. Your pickup will have 2 modes: normal gain and high gain! No batteries, no preamps, just 2 version of a pickup in one. Curtis
Novak's amazing JM180 pickup is built on his very popular JM-90 platform,
but takes this great pickup to a whole new level. Like with his JM-90
this will fit in a standard Jazzmaster pickup route.
the deal. I can't tell you how many serious Jazzmaster players have
told me they NEVER use the upper rhythm, it is just too dark, or it
sounds like someone stuffed cotton in your ears... So Curt got
the idea of this tapped JM pickup and we worked together to redesign the
wiring for the upper rhythm circuit converting it into a high gain lead
circuit with its own separate volume and tone. So when you slide the
switch to the upper circuit you will get the Full JM-180. Curt came
up with the name JM-180 because it is 2 full JM-90's in one, but also
it does a complete 180 on the dark rhythm circuit making it a over driven
lead circuit, without the need of an overdrive pedal.
Please note we are using special pots and caps for this circuit not available from the usual guitar parts suppliers. Curt and I agreed to get the best tone out of the JM180 pickup, we should not use the standard 1M and 50K pots normally found in the upper circuit. After much testing we both agreed the optimal value would be 500K audio taper for the volume, and 500K linear taper for the tone but we needed these pots to fit the upper circuit's mounting bracket and have a solid shaft to take the roller knobs. Luckily we were able to score the perfect pots that have solid shafts are are the exact same size as your traditional jazzmaster mini-pots!!
Special Cap for the famous Clapton Woman Tone!
We are using a special value orange drop capacitor that will give you that highly sought after and famous Clapton Woman Tone that works perfectly for the high-gain circuit. The cap value is lower than normal. 022 uf and will enable you to rotate your roller tone knob fully counterclockwise and it will not sound muddy, but instead will give you a really creamy distortion when pushing the amp to overdrive. Please note the upper circuit is totally vintage and still uses a .033 uf capacitor.
like all our other assemblies, these prewired
Jazzmaster® assemblies use only the finest electronic components,
and are even 'period correct' with regards to the color coding of the
vintage style cloth wire. All components are treated with Caig Deoxit
for long trouble free use. They feature our custom made copper shields,
only available at Rothstein Guitars. Fair warning, these will not be
inexpensive but they will be of the highest quality
you can find and worth every penny.
with talking about it Here are 2 different sound files switching between
the JM-90 and the JM-180. The first part is the JM-90 coil tap on the
lower circuit, the second is the full JM-180 on the upper circuit.
High Gain Mode[ Rock
Sample ] | [ Jangle
that was to high gain I could wind it less here it is wound half as
Normal Mode (Medium Gain) [
Sample ] | [ Jangle
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