Balance Guitarworks / Ballantyne Amplification

Repair and maintenance of stringed instruments and associated hardware Balance Guitarworks is a repair shop specializing in, but not limited to, guitars, bass guitars, amplifiers and related gear.

Over 25 years' experience in guitar construction, setups, refrets, headstock repairs, electronics modifications, amplifier building and repair and effects pedal building and repair. By-order reproductions of the '68 Marshall JMP 50 with switchable tube / diode rectifier circuit - the best components meticulously hand-wired to put the tone of legends at your fingertips.

Photos from Balance Guitarworks / Ballantyne Amplification's post 08/21/2022

I’m kinda pleased with how this one turned out. I believe it was getting its trial by fire today at the Iowa state fair.

04/29/2022

Had a nice rainbow starting until the red JTM-45 went to its new home today.

Photos from Balance Guitarworks / Ballantyne Amplification's post 04/23/2022

Drew - 1, excessive inrush current - 0. The new build is almost ready after waiting over four months for transformers.

Timeline photos 03/25/2022

A beautiful old amp I recently had the privilege of assisting Lockdown Guitars with. It was a bit scary under the hood from prior work that had been done, and much scarier before 20 years’ worth of mouse p**p and atmospheric gras du was scrubbed away - not my job, thankfully. Mounted back in its freshly renovated home and blowing out through its 55 year old speakers, it just sounded ridiculous!

03/22/2022

It's soon to be all about that bass.

Balance Guitarworks / Ballantyne Amplification updated their information in their About section. 08/10/2021

Balance Guitarworks / Ballantyne Amplification updated their information in their About section.

Balance Guitarworks / Ballantyne Amplification updated their information in their About section.

03/26/2021

Boldly sticking my fingers in where the high voltage lives due to someone else's shoddy "repair work." Shortcuts are unacceptable. Be careful who you have repair your gear; you just might get what you pay for.

Photos from Balance Guitarworks / Ballantyne Amplification's post 02/14/2021

Looks like I’m in the market for a Celestion Greenback G12M with a Pulsonic cone, preferably from April 22, 1971. I have 3 that are looking for their mate.

Timeline photos 02/11/2021

This little tool makes tightening knurled switch nuts quick, safe and painless.

Photos from Balance Guitarworks / Ballantyne Amplification's post 02/03/2021

Photos from Balance Guitarworks / Ballantyne Amplification's post

Photos from Balance Guitarworks / Ballantyne Amplification's post 11/03/2020

The dune buggy was started back in January and then sat for many months as other things took priority. I broke it back out last night and rerouted the neck pocket at an angle for the floating Gotoh bridge to give a minor-3rd pull-up on the G string and got it together today. It will need some tweaks as it settles in, as well as a logo and an oil finish on the neck.

Photos from Balance Guitarworks / Ballantyne Amplification's post 10/14/2020

Glad to wrap this up (pun intended). My hands are beat-up.

10/12/2020

And I thought I had too much stuff on my messy workbench.

Photos from Balance Guitarworks / Ballantyne Amplification's post 10/11/2020

I occasionally have a guitar come in that hasn't had any attention in some time. This is the extreme of that situation. It took 4x the steel wool (and effort) that is normally required to remove the heavy oxidation from the frets and fretboard. It can't be made its best without putting in the effort. Before and after...

09/27/2020

When you're building an amplifier for which nobody makes control panels, you figure out how to make your own. Inspiration comes at odd hours of the night...

Balance Guitarworks / Ballantyne Amplification updated their business hours. 07/29/2020

Balance Guitarworks / Ballantyne Amplification updated their business hours.

Balance Guitarworks / Ballantyne Amplification updated their business hours.

Balance Guitarworks / Ballantyne Amplification updated their website address. 07/29/2020

Balance Guitarworks / Ballantyne Amplification updated their website address.

Balance Guitarworks / Ballantyne Amplification updated their website address.

Photos from Balance Guitarworks / Ballantyne Amplification's post 07/29/2020

Finished this up several weeks ago but just getting around to posting. It's a JTM45 with KT66s and an output transformer with an 8K primary impedance for earlier breakup and ~ 35 watts output. It's a very satisfying sound through a quad of Celestion Greenbacks.

Photos from Balance Guitarworks / Ballantyne Amplification's post 02/29/2020

The problem: the company that made this body had a different bridge in-mind than I and routed the bridge-pickup cavity WAY back. I can't install my bridge with the body as-is because the string and spring tension will cause the wood to collapse and require extensive repairs. Gotta take preventative steps up-front. Thanks to a repair I saw a friend working on a few years ago, I have the solution.
1. Measurements reveal the problem: there would only be 1/16" of wood between the 10mm bushing and the pickup cavity, a guaranteed blow-out.
2. Cut a reinforcing graft from the same wood species and determine its location.
3. Vertical grain
4. Quick-n-dirty routing template
5. Start with a Forstner bit to rout below cavity floor
6. File relief channels to avoid hydraulic resistance when gluing
7. Test fit after routing was so tight I had to drill a pilot hole for a screw to remove it.
8. Perfect fit on the bass side and
9. Perfect fit on the treble side

Photos from Balance Guitarworks / Ballantyne Amplification's post 10/25/2016

Ready for its new owner...

Timeline photos 08/09/2016

It took what seemed like forever to make a router template I was satisfied with for the neck pocket, and some creativity (and geometry) to ensure the angle of the template relative to the workpiece would be accurate. This is the ideal fit for this joint - no hardware was used for this picture. Tight fit: check. 2-degree angle: check. Neck aligns perfectly to centerline: check.

Timeline photos 06/05/2015

Hmmm, whaddya think this is gonna turn into?

Photos from Balance Guitarworks / Ballantyne Amplification's post 04/13/2015

I finally got around to taking care of a problem that has nagged me for over two years. I haven't used this cabinet much because the speakers had that thrash metal thing going on. The Greenbacks make it sound like, well, all those records we rockheads wax rhapsodic over. If anybody loves Celestion 75s, I have a quad from late-March and early-April of 1983 that are for sale.

03/13/2015

I received a request for a price range today. If you have questions, please message me at [email protected] and let me know specifics of the information you're requesting.

Timeline photos 03/01/2015

Timeline photos

Photos from Balance Guitarworks / Ballantyne Amplification's post 06/01/2014

Finally finished cab #1 today.

Photos from Balance Guitarworks / Ballantyne Amplification's post 05/03/2014

Man, there's a lot involved in building a Marshall-style head cabinet! A little more sanding, covering with Tolex and putting on some feet and it's done. Two more to do and, if I have enough of the purple Tolex from the cab I built a few years ago, one of them will be a Barney.

Timeline photos 02/17/2014

A new guitar gets its first test drive by its owner. This was a father-son project building a guitar together. They needed help getting it together and wired-up. Sounds good!

JTM-50 build 12/01/2012

Bona-fide and signed-off

JTM-50 build 11/30/2012

This is my build of a late-1967 Marshall JTM-50. As a one-off build, I don't have the option of a period-correct back-panel layout or its cover plate. The circuit will be identical to the JTM-50 with the addition of a switch to select between a tube- or diode-rectifier circuit. Transformers are all USA Heyboers: 1202-118 power transformer, 784-139 output transformer and C-1999 choke.

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3930 S Drumm Ave
Independence, MO
64055

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