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JLD Bridge Doctor

4.5
  • 133 Reviews
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JLD Bridge Doctor Screw mount

Screw mount

Item # 3694
In stock, ready to ship!

$22.50

3 or more $20.02
+
JLD Bridge Doctor Brass pin mount

Brass pin mount

Item # 3695
In stock, ready to ship!

$52.75

3 or more $46.95
+
 
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JLD Bridge Doctor

About This Item

• Enhances volume
• Flattens 'bellied' soundboards

A unique solution to a common bridge problem, this spruce device attaches beneath a guitar bridge. An adjustable spruce "pressure post" rests against the tailblock, providing leverage to flatten the soundboard.

The spruce block is 3/4" x 1-5/8" x 3-3/8" tall. The 1/4"-diameter tension rod is 9" long. The mounting post has three different positions to accomodate a variety of bridge styles.

Screw mount: This spruce device attaches beneath the bridge via an inlaid screw (a white pearloid dot is included to hide the bridge screw). An adjustable spruce pressure post rests against the tailblock, providing leverage to flatten the soundboard. Better bridge contact and alignment can also enhance sound projection.

Brass pin mount: The pin-mounted version of the JLD Bridge Doctor attaches beneath the bridge using a threaded brass bridge pin. The strings mount horizontally through the tops of the matching brass bridge pins (included).

StewMac Tech Tip: We recommend the brass pin mount version for 12-string guitars.


Instructions

Product Instructions

JLD Bridge Doctor Instructions

How to install the JLD Bridge Doctor in an acoustic guitar.

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4.5
  • 4.62 average rating from 133 reviews
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5.0

Stunning success

By

Verified Buyer


I took a lot of time considering and consulting 'reviews' and principles of this thing, and have a fair bit of experience with guitars, knowhow and tools to do it. The guitar is a Seagull Maritime mini jumbo and only a year old, but was slightly bellying. Mainly I wanted to prevent any further movement (and take the slight bit out) and stabalise the top. I also noted the great sound that Breedlove guitars achieve with this as standard and figured that, as a truss for the top, it would provide long term structural integrety and more stable tuning. It did all this and more, a little more sustain and 'bass' response and evenness of tone and tuning stability is great for altered tunings as the top remains constant, even with the altering of the string tensions, the others stay true to pitch. I'm confident that this top 'truss rod' will keep the top stable and strong for the life of the guitar. I'd recommend it, but be sure you have the skills and room inside for this device. Don't force the top (Mine was bearly lifting). I used and recomended the cheaper permanent install, but again, make sure there is enough room in the bridge and the underside and no pickups in the way. I used a hole punch of tortoiseshell pickguard material over a black dot and unless looking closely, the installation is invisible...see pic

3.0

good? yes & no

By

Verified Buyer


yes it sorted out the bulge in my Martin's plastic sheet top , it sounded tighter and seemed to fit the bill. But - the brass pins don't put much down pressure on the saddle, although the solid brass anchors maintain the sustain. After 3 months of installation and 3 weeks of being away on business, I picked up this guitar to find it had settled with two strings buzzing on the saddle. So I need to do some messing about with the truss rod or might have to shim the saddle up a tad. There goes my nice low action.

5.0

Nice!

By

Verified Buyer


Just installed one of these on an old Yasuma that had a slight belly, and was sounding quite flat. It took 1/2 hour to install. The Bridge Doctor reduced the bellying, and greatly improved tone and sustain. As others have said, go slow with the adjustment on the post. Try humidifying the guitar and tensioning the rod slowly over a period of a few weeks.

5.0

Great Product!!!

By

Verified Buyer


I purchased a used guitar from an online auction. It had been abused, and had a severe pot belly but I thought it was worth saving. I had read about the JLD Bridge Doctor and decided to give it a try. The distance between the bridge pins and the back of the bridge was pretty small so I did not think I could use the screw mount version, so I ordered the Brass Pin mount version. I installed the bridge doctor and gradually tightened the pressure post over several days and the top flattened out almost perfectly. I tightened the pressure post a little over the next couple of days to compensate for the string tension. I was amazed at the brilliance, sustain and tone when I played the guitar. This was far better than I had expected. Over the next couple of weeks, I would have to adjust the tuning of the strings slightly each day as I guess the top was still settling in. Now I seldom have to re-tune as it holds the tuning very well. It has been 6 weeks since I strung it up and it still sounds just like it has a new set of strings even though I play it every day. This guitar sounds better than any of my other 7 guitars which include high-end models. I would definitely recommend the JLD Bridge Doctor. I am considering installing it in my other guitars to see if it will improve their tonal qualities even though I donÆt have any pot belly problems with them.

5.0

Very useful!

By

Verified Buyer


My 77 Yamaha FG-340's bridge was bowing badly and the guitar played poorly. I installed one of these and adjusted it progressively as the guitar sat there with no strings on. After a week or so, I restrung the instrument and it has been a gem to play ever since... Very neat invention that thing is... :)

5.0

THE acoustic saver

By

Verified Buyer


I've used the Bridge Doctor on guitars from the 60's, Spanish, and even Ovations. It never ceases to amaze me in how it can bring the belly down in an acoustic. It's simple to install, creates a beautiful sustain and resonates outstandingly in any acoustic you put it in!

5.0

JLD Bridge Doctor

By

Verified Buyer


I bought one of these to fix a belly in an old guitar and the installation was straightforward and it seems to have fixed the belly. I will use one of these to remove the belly from a 12 string guitar in the near future and I expect a similar result, a good bit of kit.

5.0

Great product assuming you have knowhow...

By

Verified Buyer


I highly recommend the Bridge Doctor if you have some experience building or repairing guitars. It's a very simple device, but installation has a few twists. You need to be able to control the depth of the hole you drill. Don't use tape, use a physically robust stop like a collar. Also, a neat trick, if you have any, is to use a very thin piece of scrap rosewood to cover the hole instead of the included pearl dot. Your repair can be virtually invisible if you want. This is for the screw mount item. I haven't used the brass pin Bridge Doctor.

5.0

Love this little gadget !!

By

Verified Buyer


I had a 20+ year old Cort Dreadnought with, among other things, a separated bridge that had been originally glued over the finish (ten years of attic storage, bad idea). After fixing this, I still had the problem of a badly bellied guitar. Gave this a try, and couldn't be happier (used the screw-mount model). I think it actually sounds better than it did, when new. It's definitely got a lot better low end. Brought it into a music store, since they didn't believe that this old, cheap, Korean instrument could sound as good as their big name premium models. Only their top "ask before testing" models could beat it. Mine cost me under $400, and had been anything but pampered, for a couple of decades. They couldn't believe the sound, either. Sound is subjective, I know, but there were three guys in the room who actually deal with instruments every day. I think the very vocal "expert" I'd originally discussed it with was actually a bit embarrassed. I'll be using this again, if I have other acoustics. Thanks to this little guy, however, I don't need a new one, now.

5.0

Great Product

By

Verified Buyer


I have an older guitar that i had to ship to another state to have the bridge & pickguard reguled. I also had some fretwork done to this guitar in a neighboring town. The bridge again was starting to separate and it did have a bellying problem when i bought it used but I did not want to put a lot more money into it. But it does have a nice aged sound. So I read all the reviews here and what ever information I could find before ordering, as i did not have much choice than to let the guitar sit or sell it as is. So i ordered the JLD Bridge Doctor and took my time installing it. It works. My guitar is much improved. I tightened it after a couple weeks. It sounds, plays, and looks a lot better. This is a great product. Thanks for a great product and to the others for writing their reviews. That helped me a lot.

Displaying 8 of 14
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StewMac PDF Catalog, page 31 See JLD Bridge Doctor
on page 31 of our StewMac Digital Catalog