Author Topic: JBL 4311b Control Monitors  (Read 408 times)

Offline scorpio333

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JBL 4311b Control Monitors
« on: April 06, 2019, 04:44:03 PM »
I rarely scroe anything...a few weeks ago my wife says she

Offline Sir Thrift-a-Lot

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Re: JBL 4311b Control Monitors
« Reply #1 on: April 06, 2019, 04:47:02 PM »
That is a very compelling story.

PEPE!!![/size][/color]
« Last Edit: April 06, 2019, 04:49:22 PM by Sir Thrift-a-Lot »

Offline scorpio333

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Re: JBL 4311b Control Monitors
« Reply #2 on: April 06, 2019, 05:26:16 PM »
So compelling I posted it twice...

Happened on my phone. I was able to go back and copy the text.

I rarely scroe anything...a few weeks ago my wife says she
« Last Edit: April 06, 2019, 05:27:52 PM by scorpio333 »

Offline scorpio333

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Re: JBL 4311b Control Monitors
« Reply #3 on: April 06, 2019, 05:28:34 PM »
DAMMIT...now I tried to post it from the computer...still cutting it off.

Offline scorpio333

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Re: JBL 4311b Control Monitors
« Reply #4 on: April 06, 2019, 05:31:33 PM »
.

Offline Sir Thrift-a-Lot

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Re: JBL 4311b Control Monitors
« Reply #5 on: April 06, 2019, 05:38:39 PM »
Text me.

Offline gdv

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Re: JBL 4311b Control Monitors
« Reply #6 on: April 06, 2019, 05:53:48 PM »
Sean, I am sure it is a good story!  Would be interested in hearing it...
5 out of 4 people have trouble with fractions...

Offline Jim Pittsburgh

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Re: JBL 4311b Control Monitors
« Reply #7 on: April 06, 2019, 06:33:59 PM »
inquiring minds want to know lol
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Offline scorpio333

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Re: JBL 4311b Control Monitors
« Reply #8 on: April 07, 2019, 12:36:50 AM »
Sorry, had to go out for a concert. Let

Offline Sir Thrift-a-Lot

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Re: JBL 4311b Control Monitors
« Reply #9 on: April 07, 2019, 12:39:24 AM »
Sorry, had to go out for a concert. Let

Now you're just screwing with us, right?

Offline Sir Thrift-a-Lot

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Re: JBL 4311b Control Monitors
« Reply #10 on: April 07, 2019, 12:40:30 AM »
Who did you

Offline scorpio333

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Re: JBL 4311b Control Monitors
« Reply #11 on: April 07, 2019, 10:44:29 AM »
Whitey Morgan and the 78s.

Offline scorpio333

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Re: JBL 4311b Control Monitors
« Reply #12 on: April 07, 2019, 12:23:18 PM »
Going to try this one more time...at this point the whole post is anti climatic.

I rarely scroe anything...a few weeks ago my wife says she's bringing home her dad's stereo. First thing I think that pops in my head is my buddy who inherited a AR XA turntable. Nope. It's a MCS all in one junker. Today she texts me he has speakers. UGH. I'm thinking particle board pair of misery. Nope. JBLs. They're not home yet, crossing my fingers they aren't destroyed. Any opinions on these? Haven't looked them up yet.

She got home and they are rough. Grilles are shot. One mid is ripped. The cabinets are poor. Then she tells me he mostly used them in his Bronco. DOH!

The MCS is going to the ecycler next Saturday, unless by some chance someone wants it.


Offline Sir Thrift-a-Lot

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Re: JBL 4311b Control Monitors
« Reply #13 on: April 07, 2019, 01:49:40 PM »
All of that is pretty standard for vintage JBLs.   Grills are usually missing (discarded when they invariably break or rot), so simply "shot" at least gives you a template to work from.   The torn mid is also not unusual and an easy fix.   Depending on how bad it is, you can simply use thinned Aileens and an artists brush or if it's bad, use a piece of coffee filter paper from behind and the thinned Aileens.   Think of the Aileens as Bondo and the filter as sheeting.   You want to add as little mass to the cone as you can get away with.   Mids don't have much excursion, so you are really only concerned with eliminating any possible paper buzz at the tear.   As for the cabinets, JBL was generous with the thickness of their veneers, so they tend to be easier to work on that most.   If your tweeters aren't pushed in, you've avoided the biggest headache in restoring a legacy JBL speaker.
« Last Edit: April 07, 2019, 01:53:31 PM by Sir Thrift-a-Lot »

Offline Sir Thrift-a-Lot

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Re: JBL 4311b Control Monitors
« Reply #14 on: April 07, 2019, 01:58:18 PM »
All of that is to say, yes, absolutely worth the time and effort of restoring.