Voice coil rubbing diy fix. Step 3: You should measure the aluminum strip face over with a tolerance of 2 millimeters. Here is a video showing a deta May 25, 2008 · AFAIK, there is no easy fixtypically, voice coils rub when they have become distorted, usually from too much heat (translation layed too loud). sometimes we can rotate them and they start to center on their own. A thump on the magnet with a sturdy piece of wood, in the direction of the clear coil, may improve it. If you ease the cone sideways whilst gently moving the coil, if you have a good spot, the magnet is misaligned. Cost almost as much to buy a new sub. They could also rub when the foam surround has been incorrectly replaced, but if it's got the original surround, then that can be ruled out. Carefully loosen the bolts holding the spider in place, and move the spider to a position where the voice coil does not rub the magnet. Bubbled voice coil former is done The Fast Burn is easily characterized by a gradient in the coil. Dec 16, 2011 · The trick to making voice coils is getting the winding of the said coils right by balancing its current carrying capacity with the winding tension, the heat carrying capacity of the substrate (no PVC would NOT work) on which the coil is wound with the mechanical and electrical properties of the coil and its geometry. It looks like the voice coil got hot where the insulation on the leads on the cone got melted. If you notice that your subwoofer’s cone is not moving as freely as it should, it is likely that the voice coil is rubbing against the subwoofer’s magnet. com/watch?v=ijDwl0v_k6M May 5, 2015 · If the voice coil is rubbing in your Klipsch woofer, don't throw it out yet. The sub on the other speaker is silent when this is done. The sub smoked with no output from the woofer. Aug 23, 2023 · It shouldn't change. Fortunately Jul 7, 2017 · This causes the voice coil to rub against the sides of the gap. Skip to content 800-397-9575 (toll free) DIY instructions My Account. Apr 30, 2017 · If you like to DIY, then this is an easy DIY project. The voice coil rubs against the subwoofer’s magnet. How to fix a speaker with coil rub, where the voice coil comes in contact with the magnet. Feb 18, 2007 · Other issues besides misalignment are debris in the gap, loose coil wires or hammered coil form bottom. How to wind the speaker voice coil, replace the diaphragm properlyChannel: #Rakuten10protect #shop Jan 18, 2020 · It depends on the severity of damage to the voice coil. Jul 14, 2012 · First is playing a low freq tone/music with a decent bass beat,and carefully aligning the cone so that the voice coil doesn't rub,while the glue is still wet/tacky. Speaker and Subwoofer Voice Coils | SpringfieldSpeakerRepair. Some of your ink will be worn off. 1) Damaged rear edge of the VC former from over-stroking 2) VC actually off center - this can be seen by removing the DC Other vintage speaker repairs:https://www. The voice coil former could be bubbled due to overdriving, which can also cause demagnetizationOr the end of the voice coil former is deformed from bottoming out against the rear of the motor housing or hanging up on the pole piece from extreme overexcursion. That sound is the inside of your voice coil rub Sep 19, 2019 · Audiokarma DIY. Mar 17, 2006 · Often, the speaker voice coil is rubbing the magnet, causing buzzing and distortion in the speaker. Have tried rotating 180° etc. This is a quick demo of a couple of speakers that, while they did in fact still measure a reasonable DC resistance, had some seriously toasty voice coils! T Oct 22, 2018 · I just did a bit of research and seems one potential fix the hifi guys do is to try cutting the dust cap off, slide paper down the voice coil to space it evenly, apply acetone to the spider to relax it temporarily and place a jar over the centre of the cone overnight to weight it down evenly. youtube. There is a way to correct that if it isn't too severe. comHow to use your smart phone or iPad to center the voice coil while installing new foam, rubber, or cloth surrounds to your sp Jun 22, 2020 · Mild heating of the voice coil, causing thermal expansion, could cause the tweeter coil to start rubbing against the gap and generating what sounds like more midrange coming through. May 17, 2020 · Don't ever send a subwoofer back to JL audio. I removed the dust cover and can clearly see that the voice coil is no longer centred as there is a very uneven gap. Feb 11, 2016 · Both coils still power the sub and there was no VC rubbing before taking the sub apart, just a rattle from the loose winding. Have basically narrowed this issue down to voice coil rub of some kind. As others have said, check out YouTube for some instructional videos. Best case scenario, the enamel is still intact and finding someone to redo the surrounds will re-center the coil and fix the problem. The bottom of the voice coil is black while the top may still be nice a copper color. Add another layer of masking tape over the first layer to trap any remaining debris. What happens if you push on other areas of the surround? Oct 2, 2012 · As suggested, the speaker(s) most likely have rubbing voice coils from too much average power cooking and warping the voice coil. If the voice coil magnet wire enamel has been rubbed off you run the risk of shorted turns or, worst case scenario, broken/loose coil wires. The cone "whooshes" and is definitely rubbing when gently pressed. Apr 29, 2015 · OK, here's the rubor rather, I can hear the Rub, voice-coil that is. If you sweep a sine wave tone through the speakers the distortion will be very obvious at certain frequencies. Install Voice-Coil Assembly: Use compressed air (if available) to clean all debris from inside speaker frame and magnet. Inspect the voice-coil gap. When I move the driver in question with my fingers I can hear a rubbing sound. 4. SpringfieldSpeakerRepair. I carry out a lot of repairs on speakers, so will make similar threads for different repairs. 6. By pushing the cone in and out of the voice coil you can get a feel for the speaker. Is this speaker shot or can a new re-foam job done right fix it? thanks Jan 21, 2024 · So you just replaced the foam surrounds on your woofer and you hook it up and hear that awful scraping sound. Or indeed make it worse. Nice amp. Pushing the surround on one side could realign it and stop the rubbing. Clean the coil area by wiping off any visible debris. Nov 14, 2023 · Don’t stress about cutting the wires. You'll have to slide the edge of the foam around on the basket to get it just right,and then hold it there. From a bit of dust in the coil gap to more serious problems such as a damaged voice coil or a shifted magnet. After cooling for several hours it didn't rub anymore unless I deliberately pushed the cone off-center. 12w7ae roughly a high estimate $75 per sub. Deformed end of voice coil can possibly be fixed. The easy way to tell is look at the spider and see if it has become unglued from the frame. Retighten the bolts to finish the job. Aug 24, 2006 · Place the new coil in place of the old one. The new coil comes with new terminal wires that will be attached later. At louder levels, the rubbing frequency is often masked. The voice coils ohm out properly, 2 ohms each, but I am left with a nasty vc rub. Sep 22, 2010 · Upon closer inspection and some searching online, it looks like the problem is with the voice coil. If the dust cap is already removed, visual inspection will indicate where the "rub" is occurring and the gap can be restored by manipulating the former away from the magnet assemblywith whatever tool you can find to Mar 15, 2020 · However, I had a go anyway at shimming the coil and treating the spider with acetone. It can supposedly re centre the coil and stop it Aug 23, 2018 · The voice coil has been damp and warped or it is a poor quality build. Debris, such as dust and dirt in the coil area, can cause the coil to deteriorate faster. You are essentially adding weight to the OPPOSITE end of the cone to try to balance out the movement. Jul 22, 2017 · Then look at the coil again. To check for voice coil rub you need complete silence, so find a quiet room and switch off any background noise. There are places where you can send them and have them refoamed. I noticed a rubbing noise coming from the right speaker when playing songs at low levels, so I decided to open up the speaker and see what was wrong with it (I do this a lot. I only recently replaced the voice coil in a tweeter. The weight of the cone sitting in one direction and not used for years will sag to the low side of the basket. Clean the Coil Area . May 27, 2018 · The right speaker is perfectly fine, but when on, It has a rubbing sound similar to a blown speaker, this is not a problem though when off. So, yah! Oct 6, 2005 · David, congratulations on the purchase. 50/50 chance but last resort! Apr 11, 2020 · Older Fane coils I have seen do start to lift, ie the coil former bubbles in places which can cause rubbing. One speaker has voice coil rub and was likely played this way. Feb 24, 2019 · I had that kind of a 12" woofer from a W60 with the voice coil rubbing because the bolts had loosened enough for the iron core plate to shift - probably downward due to gravity and the vibration. Oct 29, 2009 · Voice coil rubbing can be caused by at least 3 different things. However, all 5 samples have voice coil rubbing at excursion. I tried turning the speaker 180 degrees and it works for a few minutes and then runs again. Also, if they are 600’s and have original software they are pretty old! The compliance of the spider will have changed, so will the suspension, not only will they not control the cone correctly with linear movement, they will struggle Steps to Follow. It would mean some of the wire of the voice coil has the coating rubbed off and is shorting against the front plate. Be sure to push in two points on symmetrical sides of the cone evenly. It had come partly loose. This coil also typically rattles, but this isn’t a former rubbing on the pole piece. YOu might just have to bite the bullet and buy a replacement tweeter. This would be an example of a light voice coil rub. qguy; Aug 24, 2022; Speakers; Replies 3 Views 551. So you have a rub. So I trained them to play at a volume that they were happy with I then very slowly went higher and higher with volume and May 23, 2020 · Issue 1: Coil rub. What is the path of least resistance to fix this problem? I'm considering just remounting the driver upside down in the cabinet. to no avail. It was on a set of studio mains and there was no soldering involved. It could cause an overcurrent in operation. It hasn't cured the rubbing completely, but it's much easier to move the cone without rubbing. Clean vc gap thoroughly! (compressed air can Feb 22, 2012 · I ment to say in your tweeter. DIY . Annoying distortion from one of subs on the new-to-me HK-40s. Jun 5, 2023 · Yeah if something is scratching/rubbing within the voice coil gap, then it's usually because the voice coil was not centered properly (usually after a bad refoam job), debris had somehow entered the voice coil gap, the magnet is loose (can sometimes occur after a strong physical shock/impact), or because the voice coil has overheated. Throw the stuff in the garbage except for the basket and trim ring and put a 3"coil motor on it and make it the way JL should have made it for the price you pay. Step 2: Measure the width of the damaged voice coil. The noise is definitely a rub, either from, as you suggested, a warped (from overheating) voice coil, or flakes of paper or other material stuck in the gap between the voice coil and pole or front plate hole. DIY Butyl Surround Repair Kits Aug 31, 2018 · Step 3) Check for ‘voice coil rub’ There are many reasons why a speaker can have voice coil rub. Imagine a fuzzy decay at the end of each note. I've not tested with a signal yet - I decided to give it a second go with the shims/acetone first. In order for this new alignment to stay in place, you will of necessity have to refoam the woofer. Alignment problems can be caused by glue failures of surround, spider or where the coil is glued to the cone. ) when I gently pushed the driver in, nothing happened, it sounded fine, but when Dec 3, 2018 · Hello, I have an old TDL studio 3 woofer that's rubbing and can't be replaced easily. not exactly rocket science. Thread starter Voice coil rub repair with acetone on spider. Oct 29, 2009 · Poor refoaming surround replacement will instigate voice coil rub. Some speakers require that you remove the dust cover and use spacers to hold the cone centered in the coil. but not exactly Dec 10, 2023 · Realignment of the Voice Coil. Though the speaker will technically still work, the sound is pretty unusable. Inspecting the damage, it looks like the winding may have come undone by hitting the backplate too hard. Now the seller was honest enough to tell me that he had done a repair to one of the speakers and showed me which driver it was. . You only get one or two shots at this, as metal stretches when it bends, but why not, your next step is to order a new dome/coil assy anyway. Jun 28, 2012 · Voice coil rub. How to reconnect and repair a speaker or subwoofe speaker. Oct 2, 2016 · Hi, looking at an old pair of advent speakers that were refoamed many years ago as per owner. The form factor of the bobbin blank will depend on many factors. In the world of roasted coils the Fast Burn is the middle of the pack for too much power for too long. It was made so that you could easily see the voice coil and the magnet, and the magnet was rusty. Voice coil rub Kef b160 sp1261. The voice coil starts out with a die-cut, pre-coated with adhesive blank, onto which is the voice coil wire is wound. Third, the spider could be damaged; fix replace spider or get a replacement speaker. com/watch?v=NhVygMfjsNIhttps://www. Jan 22, 2019 · The rattle your hearing is the voice coil rubbing, drivers like this start to sag and are not centered anymore. If you notice that your speaker is producing distorted or fuzzy sound, it could be a sign of a blown voice coil. Now it is good as new. Nov 17, 2023 · Based on what I've read, my best guess is that the voice coil is rubbing as a result of gravity. I measured the magnet as 25. However out of a round voice coil former can be the culprit. Oh great, I bend over backwards to get these Infinity Qb drivers & all. Oct 5, 2010 · Get some fingernail polish or heavy glue and apply a small band on the back of the cone (front works too but just looks ugly). Pushing the cone in and out the coil rubbed a little depending how I pushed the cone. Sometimes, you can cure this by adjusting the spider. I was told to shim the basket. Eventually I bought another driver and sent the bad one to Electro Voice and asked them to either fix it or throw it in the trash. Once the middle plate is out of alignment the voice coil will rub regardless of the condition of the coil itself or the cone or surrounds. that's Final production total cost for a $1400 subwoofer that's plastic **** cones that are brittle as fk. Mar 12, 2014 · www. The voice coil is also slightly crumpled in the middle which would support that theory. The good news is that it made a significant improvement. Worst case, you spend $20 - $30 for a kit and screw it up, as long as you don't play them too long with a misaligned voice coil you won't hurt anything. If you push uneven or not symmetrically on the cone, it will tilt the cone and the voice coil can rub the walls of the gap. Aug 7, 2024 · Both the bending of the "ears" and the voice coil rubbing are indicative of the basket being warped due to mounting on an uneven surface, which is why straightening the ears did not fix it. Step 1: It is first necessary to position the mold in the winding machine and tightly tighten it. Or would oin your tweeter be correct? Anyway you get the idea. 4mm - which does not fit in the gap in the magnet Jun 23, 2016 · If it has melted away the coil it can start to become loose and rub the walls of the magnet gap. I fixed it with some super glue. I shimmed the voice coil with paper when assembling. The frame on celestions is far from perfect, maybe that's why they sound the way they do Anyways, look at how you mount them or the screw used, ECT; that Aug 14, 2016 · The first time I did this was with an 8" 1930's speaker I picked up somewhere that was terribly rusted and the vioce coil seemed to be rubbing. Do you think the voice coil could be damaged a little? Mar 3, 2013 · Hi there I have some tannoy M2 speakers and the main driver has cool rub. It might just be out of alignment. I got them off Ebay, all was well until I found out one of the woofer cones was rubbing so bad, it would stick in place, as displaced. this can get tricky,and you've only got one shot at it. After much After more web searching and watching many youtube videos on refoaming, it seems that this "proprietary" electrically centering process is probably nothing more than applying a low frequency signal to the woofer while manually manipulating the woofer foam into place so the voice coil doesn't rub. Remove both layers of masking tape from voice coil gap at one time. Superior to Scanspeaks and Excels. The cone itself can be weakened in the center, making it floppy around the coil. Update 2: The issue was caused by the glue that holds the front cone and the voice coil former together. I figured out what happened and I accept I made a very stupid mistake. Oct 2, 2012 · I got 5 samples of Peerless Exclusive midranges, among the best I've ever heard in terms of midrange clarity and dynamics. 5. A more severe rub creates a distorted overtone that covers all your notes from start to finish. Dec 18, 2011 · The EVM18B was never right because the voice coil rubbed. Jun 12, 2020 · I have pair of JBL 4301B monitors and as im a drummer and muso I fed them a little to much power whilst having a beer. Over time, the voice coil may become misaligned or damaged, leading to poor sound quality. I have never replaced the voice coil on an ns-10. Oct 15, 2020 · Voice Coil Basics The typical speaker voice coil has less than a half-dozen components: the bobbin, the wire, the collar, adhesives, and the lead-out wire. 4mm and ordered some replacement voice coils/domes for a 1” tweeter and what was supplied was a voice coil that is also 25. I did this repeatedly and the voice coil would stop rubbing for a few days; then start again. place some sim between the pole piece and the voice coil former, I use some strip of bond paper on four side to hold the coil in the center of the pole piece, once centered and firmly in place glue the former to the spider and the cone, when dry remove the sim and check that the cone is free of any Apr 28, 2010 · Being the cheapskate that I am at heart, I took apart my scanspeak 12m when the rubbing voice coil became too much to take and found that small metal shavings had made it into the gap, causing it to rub against the coil itself. Discussion in 'DIY' started by pw5599, Jun 28, 2012. Use the pattern of remaining rub spots and GENTLY give it a squeeze at 90&270 degrees. They started farting with voice coil to magnet rub . The voice coil is an essential component of a speaker that helps produce clear and accurate sound. You can purchase replacement subwoofer voice coils online, or you can take your subwoofer to a professional for repair. Issue 2: Blown speaker Jul 28, 2024 · I have some old Interdyn 10” 2 ways with a SEAS H211 tweeter, one of which was cooked. I was hoping to find someone who could re do the voice coil. I Nov 30, 2012 · Voice coil replacement on vintage Wharfedale 12" with step by step pics I recently got given a pair of 12" Wharfedale vintage drivers, both with blown voice coils, so I thought I would post pictures of each step in the process of voice coil replacement. Can anyone recommend someone in the UK who can repair it? Many thanks •••. It sounded blown and had that grindy sound if you pressed the voice coil in a bit. I've tried Wembley, Wilmslow and Falcon but none of them can help. As a last resort you might try to identify the nature of the basket warp and correct it. Some folks think it means the voice coil is blown or burnt up. Do the What you need to do is remove the dust cap and insert vertical strips (about 1/8-1/4" wide) of shim material inside the voice coil in between the voice coil and magnet pole piece to keep cone/voice coil assembly centered. The glue band should be 180 degrees from where the coil rubs. If the speaker is not lined up properly with the voice coil, they will rub against each other an the speakers will not work properly. Seems like So stupidly, when I first wired the sub I somehow had the voice reversed, opposite or each other. The sub still works, but the rub is very audible. Nov 11, 2008 · Over the night a distinct *clip* sound developed. nak mouond impm mpgart vdsn akbcp ekfxeh zbgvo tild uvtu
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