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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

JLD Bridge System

By

Verified Buyer


I recently bought a enexpensive Kona guitar with a bad belly behind the bridge and very sunken in at the sound hole, I read about the JLD system and thought I would try it, installation ws a breeze, but the guitar ws bellied so bad it did not relieve enough of the bulge.
So, I relieved the pressure on the sound post, and steamed the inside of the guitar, ( my mother in laws clothes steamer did the trick) and clamped down the belly as I did so, you have to be careful not to steam so much s to break lose the bracing, I left it clamped for about 12 hours, and then re applied pressure to the sound post on the JLD system, I tightened a couple turns, then reached inside and pulled the sound post down toward the bottom of the guitar, this slowly worked the post to a horizontal position with the guitar, (since the bridge was Badly tilted toward the sound hole).
After that I released the clamp, now my flat top has a flat top, is noticeably louder, and sounds very good, better than a lot of high dollar Martins I've played next too! (and before you Martin lovers start hateing on me, the owners of the Martins were surprised that a $100 dollar guitar sounded that good)
So, try the JLD, it works, just may need to finagall it a little bit!

5.0

JLD Bridge Doctor

By

Verified Buyer


I received the JLD bridge doctor from stew mac, the one with the brass pins and put it on my new Epiphone DR500 MCE 6 string acoustic and has made a huge improvement in the sound. More volume clearer highs and ringing bass. It takes a couple of days of playing for it sound better not sure why but I guess the guitar has to relax? You should get yourself one of these. A benefit is that you stop bellying up that can happen in the future with the added support of this bracing system. I put the other type you have to drill through the bridge on my old Yamaha to fix a 35 year old bridge problem and it worked great but you don't need to drill using the brass pins setup. You only need one brass pin to hold the unit. It gives the same result in enhanced sound.

Stew mac always delivers their products with no surprises even in Canada.

3.0

Not a total solution

By

Verified Buyer


I bought this Bridge Doctor to address the bridge belly issue with my classic 1979 Takamine EF385 12 string Dreadnought acoustic. I bought the pin version with he brass pins, since it was the recommended model for a 12 string. I received the order quickly, as I always do with my orders from Stewart MacDonald. Installation was not very complicated, and I had no issues with the installation. I adjusted the Bridge Doctor to take out most of the belly on the guitar while unstrung. I let it stabilize for a day or so before I proceeded to restring the guitar. After restring, and tuning to pitch, I set the guitar aside to allow it to stabilize once again under stress from the strings. I was disappointed to see that the guitar had reset to the bellied bridge once again. The Bridge Doctor did not seem to do any good at all. I contemplated tightening the bridge doctor a bit more, but the system seemed to be under so much stress as it was that I was afraid to add more pressure. The guitar had already popped one time during installation, and I did not want to separate a brace or kerfing. It did seem to add some support for the bridge, but it did not flatten the soundboard.

2.0

The service  was great

By

Verified Buyer


Well the service was very quick from placing the order to receiving the order, but the bridge doctor has some problems. The brass bridge pins are not drilled proper . I could only use two of the pins because the windings at the end of the string ball would not fit in to the hole on the bridge pins.

5.0

Exceeded all my expectations!

By

Verified Buyer


I ordered the Bridge Doctor, not expecting it to work at all. Had no choice, because a luthier told me that he didn't have the heart to charge me the thousands of dollars it would take to fix my top. My guitar is a rare 1990 Martin CHD-35, one of the few Martin dreadnoughts with a cedar top, rather than spruce. Even with light strings (which I can't stand), the top had a severe belly-bulge. The action was terrible, the sound was thin and weak. Installed the Bridge Doctor (easy install--anyone can do it!), and voila, my Martin has turned into a cannon! Now, rather than using wimpy light strings, I'm using Elixir Medium-Top Heavy Bottoms. The trick is to NOT tighten the dowel too tight. Just a little tension does the job. Even with the MTHB strings, the top is almost perfectly straight. It's holding like the rock of Gibraltar! Very well designed. Many thanks!

5.0

Great gadget.

By

Verified Buyer


I had a 1/4 bulge in my yairi top .it definitely helped to stabilise the top but did not take all of the bulge away. It does change the sound . More low end comes through.if that's what u want then I guess that's a good thing... simple to install.however drill the countersink hole first it prevents the bit from tearing through your bridge and top especially if you are using a elec drill.. hope this helps someone. Peace.

5.0

Worked perfectly

By

Verified Buyer


I purchased a vintage Yamaha 12 string. I knew it had a serious "belly bulge" when I got it. After seeing several reviews and a couple of YTube videos on the JLD Bridge Doctor, I decided to take a chance and ordered one from StewMac. It arrived as promised. The guitar was very dry (which probably caused the bulge), so after about a week of damp sponge in sound hole, I installed the Bridge Doctor. It took a little longer than 30 minutes because I was very cautious. In the end and top was FLAT. I am very pleased with the results.
Anyone considering this should be VERY CAUTIOUS when you drill the holes in the bridge. DO NOT drill all the way through the bridge with the larger drill bit. Just deep enough for the screw head and the inlay.
CONS: The instructions that came with it could be a little better explained. I read them multiple times and watched more installation videos on YTube before I started.

5.0

Takamine F385 12 String

By

Verified Buyer


I own a Breedlove Solo Concert and it has a very similar unit in it as the JLD Bridge System. I used the pin mount version #3695. I spent two weeks slowly humidifying the guitar in a hardshell case without strings on it before installing the bridge system. Once installed I spent two days making small adjustments before restringing. It's not a "fix all" as my action now has to be readjusted but my 34 year old guitar is once again playable and well within the realm of fixable with minor adjustments to the bridge and nut.

5.0

It really works!

By

Verified Buyer


Finally got around to installing this on my Cat's Eyes (Tokai) acoustic. It worked wonderfully. Easy to install and adjust, and it took the belly right out of my guitar. I even like the look of the screw head coming through the bridge--it looks utilitarian.

3.0

Mixed Results

By

Verified Buyer


I installed the no-drill version in my 1970s Aria 12 string and I am delighted with the results - maybe not quite the same tone but certainly worthwhile fixing the belly.

I then installed a drill version in my 1969 Yamaha G170A ( gold label ) classical- the feature bright tone has been destroyed and volume down by 5 - 10 db. It was very tedious to install as it was too large had to be shortened and had to cut groove for the centre brace. On this guitar all up a waste of time and money.

I suggest JLD consider a classical version

Displaying 6 of 14
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StewMac PDF Catalog, page 31 See JLD Bridge Doctor
on page 31 of our StewMac Digital Catalog