Jbl 4311 crossover upgrade

Jbl 4311 crossover upgrade

Fully tested on lab analyzer comes with frequency response test sheets.

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Available also many other JBL models, just email with request. Price is for single crossover upgrade. For repairs, email me with your problems and I will quote fix cost. Customer comments: "Excellent work. Seller helped me a lot and I appreciate that!

Thanks again. Sounds great!! I have had the L's since I purchased them new in They started irritating me awhile back. So I got these new crossovers. Again, wow. They sound like a new speaker. Well worth it. The mids and highs actually sound transparent.

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W another customer Thank you. The sound stage seemed wider and the sound was clear and clean throughout the frequency ranges. With the old crossovers I was getting a muddy mid range and boomy bass. Now the mid range in particular was much cleaner and and more detailed. Your crossover upgrade has been the best speaker investment I've ever made.

Great upgrade to JBL L" another customer Stellar JBL L crossovers!JBL crossover assembly. Customer comments:. Seller helped me a lot and I appreciate that! Thanks again. Sounds great!! I have had the L's since I purchased them new in They started irritating me awhile back. So I got these new crossovers. Again, wow. They sound like a new speaker.

jbl 4311 crossover upgrade

Well worth it. The mids and highs actually sound transparent. Thank you. The sound stage seemed wider and the sound was clear and clean throughout the frequency ranges. With the old crossovers I was getting a muddy mid range and boomy bass. Now the mid range in particular was much cleaner and and more detailed.

Your crossover upgrade has been the best speaker investment I've ever made.

jbl 4311 crossover upgrade

Great upgrade to JBL L". Stellar JBL L crossovers! Pioneer SX10AE 2. This auction is for cross-over upgrade service for JBL brand speakers each. Upgrade consists of the following:. Fully tested on lab analyzer comes with frequency response test sheets. Available also many other JBL models, just email with request. Price is for single crossover upgrade. For repairs, email me with your problems and I will quote fix cost. Customer comments: "Excellent work.

W another customerLog in or Sign up. The Gear Page. Apr 2, 1. Messages: 11, I currently have a pair of these and they sound great at this time. Is there an option as to where I can get the crossovers rebuilt at some point?

GuitarsFromMarsApr 2, Apr 2, 2. Apr 3, 3. Messages: 2, I might recommend against that. They might toss your originals in the trash and send you some cheap generic thing in return.

Companies don't repair, they replace, and they aren't too particular about what they replace with. Ask anyone who sent a valuable Fender body or neck to Fender to be "refinished".

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You need to find a JBL geek and give him lots of money. Mighty MelvinApr 3, Apr 3, 4. Messages: This former JBL employee recommends visiting www. The components for these xovers were removed from Harman's inventory many years ago I know, I used to walk by the closet that they were stored in every day. All that said, if they ain't broke Black Ice MikeApr 3, Apr 3, 5.

Yeah, I have the same speakers and I'm not going to touch them. Apr 3, 6. Apr 4, 7. I have a pair of A and my girlfriend a pair of B. Both have been repaired but no crossover fix was needed: None of these repair places would use anything but original parts The A have nice vocal sound but far too little bass, the B sounds much better - don't wish to hijack but I am interested whether this is how others see it.

Apr 6, 8. Messages: 1, If I recall right, it's just HP capacitors for the mid and tweet and the level pads. I considered this- an actual 3-way crossover. Or one of those active DSP kits.

jbl 4311 crossover upgrade

Apr 19, 9. Messages: 8, There's a thread in Audiokarma that dates from that has parts lists for building a crossover, with the option of switching out caps to obtain an "improved original"; "bright" or "mellow" sound from the Here, we have a brief overview of the complete restoration and upgrading of a legendary pair of JBL loudspeakers.

These, reportedly, have sold more pairs world-wide than any other loudspeaker, and whilst these are an original pair fro the early s they first made an appearance innew versions are still being manufactured today. However, many purists favour the original speakers with their ALNiCo magnet drive units, so early pairs are holding value well.

Finding a pair in good condition, like many of these things, is becoming more difficult. These were originally designed for use in recording studios hence the tweeter location, designed for horizontal speaker placementthe domestic equivalent being the JBL -L Potentiometers are for altering sensitivity of mid and HF units but hey also change corner slope profile between drive units!

Cabinets ready for restoration. Note, all internal galss fibre wadding removed except for mid range sealed tube :. Next, cabinet internals tackled with new bitumen damping sheets applied to all surfaces except front baffle, and new 40mm acoustic foam panels glued into place.

Following measurement and testing of drive units, a new crossover design supplied by others for the equivalent L was deemed an exact drop in, so a crossover was built based upon the design for the L and inserted into the back speaker panel:. Mobile: Landline: referencefc gmail.

Facebook Twitter. Original pair arrived rather the worse for wear! JBL original grilles beyond repair. Original JBL Damage to JBL cabinet corner. JBL cabinets. Removal of name plates. JBL name plates removed. JBL crossover. Stripped out JBL cabinet. Re veneered JBL Cabinets. New crossovers constructed for JBL Restored JBL with new grille.Discussion in ' The Lansing Legacy ' started by blackerMar 14, Log in or Sign up.

Tags: jbl crossover. Messages: Hello, i'm going to have a general inspection of my JBL B speakers as i am the second owner and haven't done this before. Messages: 5, I have not, however you might want to post this in the "The Lansing Legacy" section here at AK or at the least in the "Speakers" section. DswankeyMar 14, Moved to The Lansing Legacy forums Messages: 3, The B has a very simple crossover - 2 L-pads and 2 capacitors.

Simple enough to replace the capacitors and replace the L-pads if you can't clean them. The ebay "upgrade" seems pricey considering the parts appear to be pretty inexpensive.

Your crossover schematic can be found here Messages: 7, Location: Central CA. Those eBay crossovers get rid of the L pads, which has good and bad aspects. Good because it's more reliable; bad because you lose the adjustments. The only other basic mod is to stuff the port with a hardware store plumbing plug; that smooths out the bass.

More elaborate mods are the Murphy's or Gravesen crossovers, which are quite elaborate and take away some of the sensitivity and vintage sound.

Restoration of JBL 4311 Loudspeakers

Zonker92Mar 14, OK i see. Most people clean up the drool as best they can, and rotate the woofers to offset any sag. Zonker92 likes this. Wow lot of homework! You must log in or sign up to reply here.The L's are going to be re-veneered with quarter-sawn sapele mahogany veneer from "Certainly Wood". The 's will simply be sanded and refinished.

I'll be installing new cane grill cloth on both pairs. All the components work on these speakers. The only flaw is one tweeter has the dustcap pushed in. I'll take some photos of the components later, they are beautifully made, like all the JBL speakers of the 70's.

Here's the "before" shot!

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These originally had the segmented foam grills and someone replaced them with similar foam. You can tell it's a replacement because the squares on the foam are not evenly centered in the grill.

JBL L100 A / 4311 / 4312 crossover upgrade (each)

I was not able to find replacement foam grills, so I'll be installing cane grill cloth. The 's had a few issues with the veneer, like this chip. I'll have to repair a few chips like this. ON the L's, here's what I was facing. With this kind of problem, there's not much you can do. I thought about filling the gap and painting the grain back in. But that still really wouldn't look right. So I'll be reveneering these. L grill all cleaned up. But I'm not even going to use the grill frames for these.

Another repair. The L tweeter foams will be replaced. The L's are quite a bit older than the 's I'd say. L grill without the foam. I cleaned them up for nothing!Customer comments:.

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Thanks again. Sounds great!! I have had the L's since I purchased them new in They started irritating me awhile back. So I got these new crossovers. Again, wow. They sound like a new speaker. Well worth it. The mids and highs actually sound transparent. Thank you. The sound stage seemed wider and the sound was clear and clean throughout the frequency ranges.

With the old crossovers I was getting a muddy mid range and boomy bass. Now the mid range in particular was much cleaner and and more detailed. Your crossover upgrade has been the best speaker investment I've ever made.

Great upgrade to JBL L". Stellar JBL L crossovers! This auction is for cross-over upgrade service for JBL brand speakers each.

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Price is for a pair. Upgrade consists of the following:.

Upgrade Kits For Vintage & New Speakers

Fully tested on lab analyzer comes with frequency response test sheets. Available also many other JBL models, just email with request. For repairs, email me with your problems and I will quote fix cost.

Customer comments: "JBL L crossover upgrade. W another customer Take a look at my other interesting audio related auctions.


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