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Main Forums => Technical Discussion => Topic started by: frankhond on December 26, 2009, 09:21:15 PM



Title: How to cover hole after removed preamp
Post by: frankhond on December 26, 2009, 09:21:15 PM
Hi All,

I recently bought a LV-03RE and I never, ever use those kind of onboard electronics. So I'm going to remove them. It's the standard Baggs undersaddle pickup and the square preamp cut into the side of the guitar. The undersaddle pickup is easy to remove (I'll have a new saddle made) but when you remove the preamp there is a big square hole in the side of the guitar. Are there an good solutions out there to cover it up nondestructively in the case I need to put the preamp back in (can't see that happening really, except if I decide to sell the guitar sometime in the future). Is there some plate you can get and screw it on? Or is it best to plug it up with wood? Suggestions?


Title: Re: How to cover hole after removed preamp
Post by: ffinke on December 27, 2009, 12:30:54 AM
2 solutions:

1. Sell the guitar as is and buy one without the electric stuff, or;

2. Live with it and let the next guy decide what to do about it (he may be a recovering strat guy).

If you take the control panel out everyone is going to know it was supposed to be there and I doubt anything short of replacing the sides of the guitar will look like an unfortunate modification. Of course, if this is your life-long soul mate you can do anything you want to it but I'm afraid you're going to have re-sale issues if you pull it out.

Only an opinion but at least it's mine.

fred


Title: Re: How to cover hole after removed preamp
Post by: Danny on December 27, 2009, 12:41:37 AM
    If you really like this guitar an option may be to see how it sounds with the hole there acting as a sound port. If you like it then you could have the hole cleaned up and made to look more like a sound port. Just another thought.


Title: Re: How to cover hole after removed preamp
Post by: ffinke on December 27, 2009, 12:56:50 AM
    If you really like this guitar an option may be to see how it sounds with the hole there acting as a sound port. If you like it then you could have the hole cleaned up and made to look more like a sound port. Just another thought.

OK. That would be a good addition to 1 and 2.

f


Title: Re: How to cover hole after removed preamp
Post by: tadol on December 27, 2009, 03:09:25 AM
1. Sell the guitar as is and buy one without the electric stuff, or;

2. Live with it and let the next guy decide what to do about it (he may be a recovering strat guy).

Gotta agree with these - I've seen some really nice guitars that I passed on because they had barn doors in the sides for the electronics, and one with a patched up barn door would be even worse!

You may find that the difference in tone between keeping the pickup or removing it is pretty minimal - the difference between replacing it with bone vs Tusq will be alot greater. 

Intact and working electronics will add alot more value if you ever want to sell it -

Tad


Title: Re: How to cover hole after removed preamp
Post by: jeremy3220 on December 27, 2009, 03:55:24 AM
You could take the pickup out and just leave the preamp.


Title: Re: How to cover hole after removed preamp
Post by: Danny on December 27, 2009, 05:40:48 AM
You could take the pickup out and just leave the preamp.
Yup, but that sounds to easy :wave


Title: Re: How to cover hole after removed preamp
Post by: frankhond on December 27, 2009, 11:55:10 AM
Hehe, yes I have considered all of these points. Actually I was planning on keeping the electronics in a box, and putting them back in if a resale situation arises. Hence the issue of covering the hole up in a nondestructive way. I was hoping for some retrofit plate that fits exactly in the hole and can be screwed in place with the same screws in the same screwholes, so no modification of the wood would be necessary. But I can't find anything like this anywhere...

About the sound, well, I do have the feeling that this lv-03R sounds a bit dull on the high end, there are not many guitars to compare with where I live but I have played a few lv-09's and they are more lively. Also my lv-09Adi is much more lively but the adi top might have something t do with this. So I was thinking to eliminate the stuff between saddle and bridge to start with. Maybe others have a similar experience, and a different fix?


Title: Re: How to cover hole after removed preamp
Post by: cc407 on December 27, 2009, 12:23:46 PM
Duct tape.


Title: Re: How to cover hole after removed preamp
Post by: frankhond on December 27, 2009, 02:22:57 PM
Duct tape.

Actually an old trick if you want to diminish feedback, but then it's supposed to cover the *sound hole*.  :winkin:


Title: Re: How to cover hole after removed preamp
Post by: frankhond on December 27, 2009, 02:25:55 PM
You could take the pickup out and just leave the preamp.

Speaking of which, what is the easiest way to remove the pickup? Can I just pull it out through the drilled hole in the bridge or should I lift out the pickup and cut the wire?


Title: Re: How to cover hole after removed preamp
Post by: teh on December 27, 2009, 02:36:48 PM
Can't really add to Fred and Danny's suggestions. One other thought: Is the guitar insured? If not you could always just call Pete Townsend and let him borrow it for a show. Just kidding.



Title: Re: How to cover hole after removed preamp
Post by: Mr_LV19E on December 27, 2009, 04:15:59 PM
You could design a little puppet head that pops up out of the hole like a jack in the box and starts singing, just learn some ventriloquism.


Title: Re: How to cover hole after removed preamp
Post by: Danny on December 27, 2009, 05:48:59 PM
You could design a little puppet head that pops up out of the hole like a jack in the box and starts singing, just learn some ventriloquism.
:roll


Title: Re: How to cover hole after removed preamp
Post by: tadol on December 27, 2009, 08:40:26 PM
I've wondered when someone would think of using that space to store a capo, some picks, a tuner, extra b & e strings, etc. -

Tad


Title: Re: How to cover hole after removed preamp
Post by: SMan on December 27, 2009, 10:26:26 PM
First off I would just leave the electronics as they wouldn't bother me. .  That being said if I had a guitar with a barn door hole I would probably be tempted to make an elipse, oval, or round shape out of the opening and because it would be quite large, design a routed cover for it similar to a soundhole cover.  It would look the closest to a "planned" design and have the potential to look great with the bonus of a functioning soundport.  It would also still be removable and could accommodate different designs. 

 :donut :donut :donut


Title: Re: How to cover hole after removed preamp
Post by: frankhond on December 27, 2009, 10:58:40 PM
You could design a little puppet head that pops up out of the hole like a jack in the box and starts singing, just learn some ventriloquism.

http://www.youtube.com/watch?v=jjEznClI1NI


Title: Re: How to cover hole after removed preamp
Post by: frankhond on December 27, 2009, 11:00:34 PM
First off I would just leave the electronics as they wouldn't bother me. .  That being said if I had a guitar with a barn door hole I would probably be tempted to make an elipse, oval, or round shape out of the opening and because it would be quite large, design a routed cover for it similar to a soundhole cover.  It would look the closest to a "planned" design and have the potential to look great with the bonus of a functioning soundport.  It would also still be removable and could accommodate different designs. 

 :donut :donut :donut

Yeah, not a bad idea, actually I'm looking into some rapid prototyping at the moment, maybe some cool design could be made out of this... will get back when I have something ready.  :cheers


Title: Re: How to cover hole after removed preamp
Post by: AZLiberty on December 28, 2009, 08:08:55 AM
I'm going to try to talk you into just leaving it alone.  Because while you might not use it now, you could in the future.  My OM-03RE is the best sounding guitar I own, and there are 3 other non electrified Larrivee's in the stable.

I only got the electronics because it was a good price, and didn't use them or even bother to test them for 4-5 years probably, but I have to admit that whenever I play out, it's a heck of a lot easier to simply plug in than to mic the guitar, and having the controls at your fingertips on the side is nice when the sound guy does not know your stuff so you can adjust your volume yourself when you change from a strummed song to a fingerpicked one.

If the highs are missing in action I would definitely check to make certain that the saddle is completely flat on the bottom and properly seated against the transducer, and you can also try a bone saddle to bring out the trebles some.  I'd do that before I cut any wires.  

If it really bothers you and you know you will never use the electronics, sell it and replace it with a nice used LV-09.


Title: Re: How to cover hole after removed preamp
Post by: frankhond on December 28, 2009, 08:56:36 PM
I actually looked at the saddle today and, well, it's hard to say anything intelligent since I don't know how it's supposed to look. I might bring it to a good luthier after the holidays to check out other options. Are you saying a bone saddle gives it more treble? I thought it would mellow the sound instead.

 


Title: Re: How to cover hole after removed preamp
Post by: Danny on December 28, 2009, 09:54:02 PM
I actually looked at the saddle today and, well, it's hard to say anything intelligent since I don't know how it's supposed to look. I might bring it to a good luthier after the holidays to check out other options. Are you saying a bone saddle gives it more treble? I thought it would mellow the sound instead.

 
Bone does not "mellow" the sound if you mean it in a way like "stifle".
  Or reduce the tone. Bone makes the tone a bit more distinct and some may say "harsh".      I prefer it myself.   I just made and installed a bone saddle on my OM-21 that has a LR Baggs in it. I like the sound. A little more "in your face". :nana_guitar


Title: Re: How to cover hole after removed preamp
Post by: ffinke on December 28, 2009, 10:22:00 PM

If the highs are missing in action I would definitely check to make certain that the saddle is completely flat on the bottom and properly seated against the transducer, and you can also try a bone saddle to bring out the trebles some.  I'd do that before I cut any wires.  

If it really bothers you and you know you will never use the electronics, sell it and replace it with a nice used LV-09.

If there is a projection deficiency I'd definitely take it to a good tech and have him look at the interface between the bridge and the saddle. Bone will give a little more sparkle (or so I'm told; I still have the original tusq in my L-03). If the saddle is not in perfect contact with the bottom of the bridge slot the energy transfer will suffer. That might be another reason to NOT remove the transducer (or whatever that thing is called).

f


Title: Re: How to cover hole after removed preamp
Post by: NAFIGATOR on December 29, 2009, 03:56:34 AM
Turning a preamp hole into a sound port will save guitar looks, however beware of this sound port being too large. In general every inch you cut off your guitar effect the bass. This is oversimplified statement, but it works for this case. If this sound port is large enough you may hear a difference in bass presents.


Title: Re: How to cover hole after removed preamp
Post by: Zohn on December 29, 2009, 01:11:13 PM
Frankhond, are you serious - and if you are, why did you buy that guitar with the electronics to start with?  :?


Title: Re: How to cover hole after removed preamp
Post by: frankhond on December 29, 2009, 02:52:03 PM
Frankhond, are you serious - and if you are, why did you buy that guitar with the electronics to start with?  :?

Well, I got a good price and they didn't have one without. And I was told that the electronics don't affect acoustic sound. But after having it home for a while I have a feeling that the guitar (compared to other rosewood Larrivees I have tried) has a slightly dull sound, it feels that some of the sparkle that should be there is not coming out. Of course this culd be a "clunker" but I saw some other posts on this forum that tone improved after removing electronics, so....

The sound port thing is "extra", I was originally looking for some simple product/solution to cover the preamp hole. But after seeing this thread develop, I realize the idea of removing electronics is more unorthodox that I thought.
   


Title: Re: How to cover hole after removed preamp
Post by: ST on December 29, 2009, 02:57:00 PM
Hi Frankhond,

Have you put new strings on it since you got it?

Have you tried different kinds of strings?



Title: Re: How to cover hole after removed preamp
Post by: Danny on December 29, 2009, 04:56:01 PM
  I owned a D-09e and the first thing I did was remove the transducer ribbon. I even cut out the wires and the Fishman preamp, but left the end pin. This was not a Barn door though. Then I made a bone saddle and replaced the nut also. I thought it was a big improvement. ( I happen to have that guitar back home with me for  a few months, so I played it last week, don't care for the small 1 11/16'' neck but I was enjoying the sound.)
   I am going to be examining a barn door Larrivee in about an hour that has some cracks around the pre-amp hole. I'll follow your thread to see what you do and maybe I'll have a little more to say later on. I usually do of course. :blush:


Title: Re: How to cover hole after removed preamp
Post by: PortHueneme on December 29, 2009, 06:19:35 PM
Your posts says purchased "recently", it can take some playing time for the guitar to open up, as well as you get used to playing it.
If you have not changed strings and done a setup, I would strongly urge you to do so before removing the electrics.

Good Luck..


Title: Re: How to cover hole after removed preamp
Post by: frankhond on December 29, 2009, 08:44:54 PM
Guys, I really appreciate the amount of involvement from you all.

New strings - check. Martin PB SP and DAddario PB.

I agree about having the guitar longer might help. I think an action plan is to take it to a luthier after all those holidays and see if it's ok in terms of saddle etc. A setup might help but frankly the action and playability is excellent as it is now. I might try to put in a bone saddle.

Plan B is to try and remove the electronics. I have a contact who can laser-cut model airplane plywood to specs - I'll CAD up a simple cover that fits exactly over the hole.

Dependan, possibly it's your thread I was inspired by? Did you compare the sound before you switched saddle to bone?


Title: Re: How to cover hole after removed preamp
Post by: Danny on December 29, 2009, 09:38:41 PM
Guys, I really appreciate the amount of involvement from you all.


Dependan, possibly it's your thread I was inspired by? Did you compare the sound before you switched saddle to bone?

I'm not sure which thread you meant, but I have never regretted switching to a bone saddle in any guitar I have owned. My F-III has a bone saddle now as well as bone pins. My OM-21 has a new bone saddle with a Baggs transducer under it, other than tweaking it a little on top to get the intonation spot on I like it, the tone is great. The D-09 was greatly improved by removing the fishman transducer and putting in a bone nut.
              Saddles and transducer ribbons can cause some big issues with transfer of energy to the top.


Title: Re: How to cover hole after removed preamp
Post by: ST on December 29, 2009, 09:51:56 PM
Hi Frankhond,

I'd really like to encourage you to make only changes that can be completely and easily reversed.

Unless you are going to keep this guitar for life you might want to consider resale value.  

As a potential purchasor of a guitar like this the cost of adding a pickup system  is a major deterrent to purchasing it (if  like me, you can't do the work yourself).  

If you can do things in a way that will let you restore the guitar's electronics to a working state then go ahead. But how sad it would be if you cut things out and find that the improvement is slight or unnoticeable. A potential purchasor will never be able to appreciate the difference if s/he cannot compare.

Anyway - here is just my personal take on things. The unamplified difference in sound (with/without) electronics has never been an issue for me, but a guitar that has been permanently altered to remove a factory installed system - well that's almost certainly not going to get on my shortlist for a purchase.  



Title: Re: How to cover hole after removed preamp
Post by: frankhond on December 29, 2009, 11:33:53 PM
Ok thanks everyone, I'll get back when I have made a few nondestructive tests.  :cheers


Title: Re: How to cover hole after removed preamp
Post by: Mr_LV19E on December 30, 2009, 12:13:32 AM
The preamp in the side may not be attractive but the alternative will be less so.

(http://i199.photobucket.com/albums/aa242/daddyo12453/lo3eholedr6_th.jpg)


Title: Re: How to cover hole after removed preamp
Post by: frankhond on December 30, 2009, 07:59:21 PM
Ugh, ugly. So I will definitely have to invent a cover - hey, maybe that's a new product idea, a hole cover for that promille of guitar players who remove the electronics...


Title: Re: How to cover hole after removed preamp
Post by: Mr_LV19E on December 30, 2009, 10:10:09 PM
You could fabricate a thin piece of wood to cover the hole and screw it into place from the inside using the existing holes.


Title: Re: How to cover hole after removed preamp
Post by: dave42 on January 03, 2010, 01:33:20 AM
Looks like the place to tape your play list with keys, and first couple of words, etc..  Tape the card/paper over the hole!

No real answer, really... Good Luck!


Title: Re: How to cover hole after removed preamp
Post by: Trinity Guitars on January 03, 2010, 12:19:22 PM
I think it is not such a good idea to remove the pre amp. Down the road such a change in the guitar will make it very hard to sell. I guess if nothing was changes on the guitar you could put it back in and hope that it will still work. I would learn to love the guitar as it is and if you cannot try to find a deal on one with out the pick up system. Bottom line is that it is your guitar and you are the one who needs to enjoy it. Of all the ideas here the wood cover is the best as you would still have the option of putting the system back in down the road for use or sale.


Title: Re: How to cover hole after removed preamp
Post by: Michael T on January 03, 2010, 12:55:57 PM
You bought the wrong guitar!

The question that really arises now is do you want to suffer with it knowing it is not what you want, alter it (which may render it unsaleable or at the least a huge hit in resale), or take the hit now and sell/trade for another.

Trying to come up with a way to invent a  reversable alteration is going to take you a lot of time, some money, and effort that eventually you still are going to have to disclose to a subsequent buyer while never knowing if you will be satisfied with the result sound wise and looks wise. I would suggest you buy what you really want and sell your current guitar for the best price you can get, chalking the loss up to experience. These instruments are way too expensive and delicate to be messing around with to end up in a closet due to lack of satisfaction that starts the day you get it.


Title: Re: How to cover hole after removed preamp
Post by: GA-ME on January 03, 2010, 01:17:43 PM
I am not sure I understand why you want to remove the preamp. If you don't use the electronics, that doesn't necessitate removing them, does it?


Title: Re: How to cover hole after removed preamp
Post by: tadol on January 03, 2010, 04:28:01 PM
I think I would get a piece of brass or copper just thick enough to hold a curve, and cut it to just larger than the pre-amp. File the edges smooth, round the corners, and gently bend it by hand around a large pipe or dowel until it matches the contour of the guitar. Make sure the screw holes line up with the existing ones from the preamp, and make sure the underside is smooth so you don't scratch any of the finish. You can plate, coat, paint, or veneer over the metal if you want - Or maybe a little custom engraving?

Keep all the parts you removed in good shape, and you can reinstall if your situation or interests change -  It would make an interesting custom guitar if done well!

Tad


Title: Re: How to cover hole after removed preamp
Post by: frankhond on January 03, 2010, 05:04:35 PM
I think I would get a piece of brass or copper just thick enough to hold a curve, and cut it to just larger than the pre-amp. File the edges smooth, round the corners, and gently bend it by hand around a large pipe or dowel until it matches the contour of the guitar. Make sure the screw holes line up with the existing ones from the preamp, and make sure the underside is smooth so you don't scratch any of the finish. You can plate, coat, paint, or veneer over the metal if you want - Or maybe a little custom engraving?

Keep all the parts you removed in good shape, and you can reinstall if your situation or interests change -  It would make an interesting custom guitar if done well!

Tad

Yeas, this is what I will do in the end, but I will start with laser-cut airplane plywood. We see how it works... In fact, there were some silly suggestions at the start of this thread about puppets and stuff, but if you have this thing in your guitar, what functionality would be interesting to implement? Perhaps a tuner that can be set into the cover....


Title: Re: How to cover hole after removed preamp
Post by: JOYCEfromNS on January 03, 2010, 06:06:42 PM
Perhaps a tuner that can be set into the cover....


I wouldn't be surprised to see Gibby latch on to that gimmick - you ought to patent it!!!  :roll


Title: Re: How to cover hole after removed preamp
Post by: tadol on January 03, 2010, 08:33:39 PM
Start with laser cut plywood? Would love to see your shop - Lasers aren't even close to my wish list of power tools. CNC maybe, but at this point I am still hoping to get a laser guide for my chop-saws -

Tad


Title: Re: How to cover hole after removed preamp
Post by: SMan on January 03, 2010, 09:28:43 PM
Yeas, this is what I will do in the end, but I will start with laser-cut airplane plywood. We see how it works... In fact, there were some silly suggestions at the start of this thread about puppets and stuff, but if you have this thing in your guitar, what functionality would be interesting to implement? Perhaps a tuner that can be set into the cover....

Or a mp3 player to strum along with? 

There's always a creative solution to any problem.  :thumb


Title: Re: How to cover hole after removed preamp
Post by: frankhond on January 04, 2010, 07:40:23 PM
Start with laser cut plywood? Would love to see your shop - Lasers aren't even close to my wish list of power tools. CNC maybe, but at this point I am still hoping to get a laser guide for my chop-saws -

Tad

I'm lucky - my wife is studying architecture and they have a laser...  :thumb

Another option is to CAD something up and send it to Shapeways, but the wife option is cheaper.  :smile:


Title: Re: How to cover hole after removed preamp
Post by: JOYCEfromNS on January 04, 2010, 09:23:00 PM
but the wife option is cheaper.  :smile:


Hmmmmm not always!!!!!!!!!!  :humour:   :roll


Title: Re: How to cover hole after removed preamp
Post by: SMan on January 04, 2010, 10:29:37 PM


Another option is to CAD something up and send it to Shapeways, but the wife option is cheaper.  :smile:

The cheap can come out expensive.  :bgrin:


Title: Re: How to cover hole after removed preamp
Post by: rockstar_not on January 07, 2010, 02:16:13 PM
    If you really like this guitar an option may be to see how it sounds with the hole there acting as a sound port. If you like it then you could have the hole cleaned up and made to look more like a sound port. Just another thought.

My L03-E electronics pooped out on me many years ago.  I pulled the Fishman pre-amp and left the hole as is - sounds really nice while playing.  A very cheap way to 'finish' off the raw wood edge is simply to buy a short section of automotive vaccuum hose, split it along it's length, and slide it onto the raw wood edge.  Cut to length.  Done.  Someone suggested that here years ago.

-Scott


Title: Re: How to cover hole after removed preamp
Post by: rockstar_not on January 07, 2010, 02:22:00 PM
The preamp in the side may not be attractive but the alternative will be less so.

(http://i199.photobucket.com/albums/aa242/daddyo12453/lo3eholedr6_th.jpg)

Hey Roger - how'd you get that photo of my git?!?

Actually, I remember posting this a few times.  Not pretty is it?  Once I took out the pre-amp, it convinced me that I probably could do a better job than this.  Yes, folks, this was a Larrivee factory install.  That's how bad of a job they did.  I never got any resolution from this from Larrivee.

I put in a K+K mini pure western on my own after this.


Title: Re: How to cover hole after removed preamp
Post by: frankhond on January 07, 2010, 03:08:56 PM
My L03-E electronics pooped out on me many years ago.  I pulled the Fishman pre-amp and left the hole as is - sounds really nice while playing.  A very cheap way to 'finish' off the raw wood edge is simply to buy a short section of automotive vaccuum hose, split it along it's length, and slide it onto the raw wood edge.  Cut to length.  Done.  Someone suggested that here years ago.

-Scott

Not bad! There is a shop nearby that carries all kinds of stuff like this. Yet another option... I'm gonna order some new saddles first so I can do a proper bone vs tusq test while I'm at it.


Title: Re: How to cover hole after removed preamp
Post by: Mr_LV19E on January 07, 2010, 04:43:19 PM
Hey Roger - how'd you get that photo of my git?!?

Actually, I remember posting this a few times.  Not pretty is it?  Once I took out the pre-amp, it convinced me that I probably could do a better job than this.  Yes, folks, this was a Larrivee factory install.  That's how bad of a job they did.  I never got any resolution from this from Larrivee.

I put in a K+K mini pure western on my own after this.
Scott, that photo made such an impact on me the first time I saw it I had to save it. If I ever have a thought of buying a guitar with a barn door pickup I just look at the photo, end of GAS.


Title: Re: How to cover hole after removed preamp
Post by: Betterlate on January 03, 2017, 07:01:05 PM
Hello group,  I'm new to the board but have a great deal of respect for all of you!  There is a a great knowledge-base of info on this site.  I've been looking for a Larrivee for some time and I guess patience paid off as I was able to find a nice L-03ce in near perfect shape for a great price.  I really enjoy the play-ability and even tones but as I'm somewhat hard of hearing, have been contemplating a sound port.  I don't gig nor really enjoy plugging in so this seemed like a good candidate to modify without any destructive steps.  At this point I've removed the old preamp box and left the under-saddle alone and taped up the output plug together inside the body.  The sound has definitely changed but as you'd expect, she is perhaps slightly hollow sounding.  I'd like to install a shaped wood cover with a more reasonable sound port hole in place of the rectangular cutout.  I'm thinking to use magnets on either side of the body to attach it keeping everything removable/reversible should I decide later to part ways.   

There may be a more recent thread on this project and if so my apologizes.  But I'm wondering if Frankhond was successful with creating a cover plate and how it went?  It seemed like you were going to laser cut a cover but perhaps decided on something else?  Any suggestions are appreciated.

Thank you and happy holidays -


Title: Re: How to cover hole after removed preamp
Post by: rockstar_not on January 04, 2017, 05:57:23 PM
The magnet idea has some merit. Mine is still just an open wound on the side of the guitar. Here's what I have recently considered: 3D printing g a custom plug.  Our local library has 3D printing capability as well as access to all of the major CAD packages. I thought I would make it a snap fit solution, but I really like your magnet idea. It would be quite easy to implement in a 3D printed plug that has a recess on the back side for a metal bar for spanning the inside of the hole and a pocket for a neodymium small magnet on the outside of the plug. I would make a lip in the outside of the plug that would be larger than the hole opening. A very small neodymium magnet glued to the inside of the guitar could hold that plug in place with another embedded in a pocket in the plug or even a small piece of iron set into a pocket in the plug. 


Title: Re: How to cover hole after removed preamp
Post by: rockstar_not on January 04, 2017, 09:47:17 PM
ThInking through the whole magnet closure idea sparked a couple of other ideas for me.  I will be posting back here soon.


Title: Re: How to cover hole after removed preamp
Post by: Betterlate on January 05, 2017, 01:11:36 AM
Cool - Thanks for the response.  My idea of a cover is very similar to yours.  I've done several projects with rare earth magnets and those small little guys work great holding things in place.  I was rolling around several ideas of how to make the shape including, first marking the shape of the curve onto a scrap of 1/4 inch material, scroll sawing the curve then attaching sand paper to the opposite side of the guitar and sanding down the template in an up/down motion to dial in the final shape.  Then, attaching that 1/4" template to the material I want to use and, using a pattern router bit rout out the profile.  I'll probably have to do this last step on two or three pieces then glue them together.  Or something like that.  But I'm not too motivated as my garage/shop is a chilly 40 degrees and I guess I'm a wuss.   For now I'm living with the hole and actually enjoying the sounds.  I need some fret work on her then will replace the nut which is pretty low on the e string.  Surprisingly it doesn't buzz.  Anyway, after getting the cover made, I hope to drill out an elliptical shaped hole similar to what Todd has been making.  I'm hesitant to drill/port the lower bout as that really would be a permanent change so for now just planning on the cover with the port.  Let me know what ideas you have.  For materials I'm thinking to use walnut and stain it dark to pickup the ebony.  

cheers -      


Title: Re: How to cover hole after removed preamp
Post by: rockstar_not on January 06, 2017, 04:01:44 AM
On the opposite end of things, I stopped by the local Hobby Lobby and picked up a small sheet of flexible magnet material. cut two pieces just slightly larger than the hole, and put one on the inside, held it in place from inside the sound hole, then put the other piece on the outside.  It's hard for me to judge if there's an acoustic difference, but I can try to make some recordings with and without the cover to see if there's a back-to-back difference.


Title: Re: How to cover hole after removed preamp
Post by: Caleb on January 06, 2017, 04:43:58 PM
Interesting thread and dilemma.  I doubt I could ever find myself in this situation because once I see a "barn door" on any guitar, I never even pick it up to try it out.  Those things have always been the ultimate deal-breaker for me. Only exception was the Ovation I once owned, and it was purchased specifically to use on a stage.  Worst than all for me is the built-in tuner option on so many of these guitars.  It's more like a computer than a guitar at that point. 


Title: Re: How to cover hole after removed preamp
Post by: rockstar_not on January 07, 2017, 01:04:20 AM
Interesting thread and dilemma.  I doubt I could ever find myself in this situation because once I see a "barn door" on any guitar, I never even pick it up to try it out.  Those things have always been the ultimate deal-breaker for me. Only exception was the Ovation I once owned, and it was purchased specifically to use on a stage.  Worst than all for me is the built-in tuner option on so many of these guitars.  It's more like a computer than a guitar at that point. 

I naively ordered mine that was from the factory. Yes, the improperly cut hole you see earlier in the thread was a Larrivee factory installed fishman system.  I just found out that our local library has an Epilog Helix laser that can cut all types of material in their maker space, thickness up to 1/4 inch. I think I can make a nice wood cover either to directly insert into the hole or over the hole.


Title: Re: How to cover hole after removed preamp
Post by: Betterlate on January 08, 2017, 08:35:44 PM
Interesting thread and dilemma.  I doubt I could ever find myself in this situation because once I see a "barn door" on any guitar, I never even pick it up to try it out.  Those things have always been the ultimate deal-breaker for me. Only exception was the Ovation I once owned, and it was purchased specifically to use on a stage.  Worst than all for me is the built-in tuner option on so many of these guitars.  It's more like a computer than a guitar at that point. 

Thanks for you thoughts on this.  I have a few acoustics (10 at last count according to my wife but I move em around and there are actually a couple more he he he...) anyway, all of them came with some sort of PU.   About half (the older ones) have side mounted (barn door) pre-amps but they don't really bother me other than just being there.  My immediate goal is to experiment with a port hole and I thought the Larrivee would be a good candidate.  But when I removed the fishman pre-amp shoe box, I could help but notice how big the unit is and think it must be creating some sort sound wave distortion.  I'm certainly the further thing from a sound engineer but my gut says the guitar should sound acoustically fuller without a block of plastic inside.  We'll see how this modification goes.  I may elect to remove other side amps should the urge present itself.  I'm hoping to find some time in a couple weeks to kick this off.  I'll post some pics if I can figure it out showing the progress.   

All the best -