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First Refoam Problem

Only you know how much & what kind of glue you used - that affects how long it takes to cure. Worst that happens is it falls apart and you have to glue it again....

True. I used the glue that came with my kit, it's white and very strong. I've been playing my other speaker that I did this to and the dustcap has stayed put so I'll just keep an eye on it, like you said worst case I'll just reglue and wait awhile.
 
Good for you for not giving up, and "throwing in the towel". :thmbsp: :thmbsp:

As you gain more experience (and there will be more :D), you'll get a better feel of when to proceed to the next step. A couple more re-foams, and it'll become second nature. :yes:

You'll always have the AK family to help. It's just what we do here.

Now go Have Fun with your new toys. :music:

PS. Post up some pics of the finished speakers. We ALL like pics. :banana:
 
Good for you for not giving up, and "throwing in the towel". :thmbsp: :thmbsp:

As you gain more experience (and there will be more :D), you'll get a better feel of when to proceed to the next step. A couple more re-foams, and it'll become second nature. :yes:

You'll always have the AK family to help. It's just what we do here.

Now go Have Fun with your new toys. :music:

PS. Post up some pics of the finished speakers. We ALL like pics. :banana:

Thanks. I can be quite obsessive and persistent at times when it comes to trying to repair something or make something workout.

I will certainly post some picture of the speakers, I made a modification to the dustcaps I thought was cool.

Now it's onto trying to repair my old amp again...for some reason the inputs for the AUX doesn't work right (sounds bad and one channel is cut out) but the input for Tuner works fine. Going to probably start a new thread concerning that repair...there is always something to fix up :) IF any of you have experience with such a thing look for my new post soon. Also I'll take pictures and upload within a few minutes!
 
Here are some random pictures of both speakers.

Notice that the right speakers surround isn't exactly center, while the left speaker I got just right the second time around. I haven't noticed any sort of distortion from the sound on the left speaker even though the surround didn't sit perfectly center. Also I initially was going to put the dustcaps back on with the logo upright, the way they were originally, however I accidentally slanted it. Sort of liked it though so decided to slant the other one inward as well...I kinda think the logo looks cool no matter how it is oriented. I know it's not impressive and my speaker placement isn't the best either but I don't have many options atm in my room for where to place them.
 

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Great pics......

Of a great journey into refoam world !

Keep on friend !
 
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WOW This Was One Hell Of A Thread ! Talk about drama !
A spiritual journey : " The Story Of A Boy And His Speakers "
I am currently dealing with exactly the kind of fear and trepidation that this thread reveals. My beloved Kappa 6.1 now has cracked surround and I have never done one . Currently reading all I can in preperation for my first surgery .This thread has been wonderful !
MECH : YOU DESERVE TO BE SAINTED IN THE AK HALL OF FAME .
So glad it worked out for you in the end .. It was wonderful to hear your love of music through the pottential loss of your babies and follow your times of doubt and despair while being propped up by .. SAINTS
VIVA AK
 
Great pics......

Of a great journey into refoam world !

Keep on friend !

Thanks for the encouragement! My success here, and the readily offered assistance has inspired me to push further. I have moved on to restoring my Realistic SA-2001 amplifier and my Realistic 31-2000 equalizer. Be sure to check out my other threads there if you feel you can lend a hand!

WOW This Was One Hell Of A Thread ! Talk about drama !
A spiritual journey : " The Story Of A Boy And His Speakers "
I am currently dealing with exactly the kind of fear and trepidation that this thread reveals. My beloved Kappa 6.1 now has cracked surround and I have never done one . Currently reading all I can in preperation for my first surgery .This thread has been wonderful !
MECH : YOU DESERVE TO BE SAINTED IN THE AK HALL OF FAME .
So glad it worked out for you in the end .. It was wonderful to hear your love of music through the pottential loss of your babies and follow your times of doubt and despair while being propped up by .. SAINTS
VIVA AK

Yes there was quite a bit of drama involved here in this thread. Like I've said before though, the thing that really warms my heart is the dedication the members in this forum have to offering assistance. I hope one day to have learned enough to be able to help others like some of helped me.

There was a lot of frustration and confusion involved, also a little despair when I imagined that I had ruined my wonderful speakers (these guys are like my babies, love the way they sound). I went into the project sort of unsure and with not quite enough patience...and with a little help from my AK-Friends I came out with a repaired set of speakers, knowledge on the proper way to refoam, some do's and don'ts, and an appreciation for patience and attention when dealing with projects such as these.

I got way more attention here than I thought I would, and I'm glad you're getting some help preparing for your refoam. As someone who JUST finished the process for the first time I can offer you some pointers that would have helped me a lot.

First off, make sure that the inside of the surround sits centered with the outside edge of the cone. I have one of my speakers that I refoamed and didn't get the surround centered properly..luckily for me it's only slightly off and still seems to work...however...my other speaker that I originally rushed was off center and because of that I couldn't get the outside edge of the surround to adhere properly.

Also, if you are really eager to listen to your speakers again, I suggest you setup a backup pair if you can...part of my problem was that I slightly rushed the process once I got to the end, and it was because I was eager to get these speakers back. Go into the project not expecting to use them again for a few days, that way you aren't racing to get them repaired and miss something important.

Also...I wish I would of known this before...but don't take off your dustcaps unless you have to. My repair instructions basically had it listed as if it was an essential step and apparently it's not. Opening the VC up to open air introduces the chance for it not to be centered when you refoam, and for particles to make their way into the VC. I encountered both of those issues, so, heads up.

Just make sure you really take your time, it can be annoying getting all the initial material off, that's going to be the most time consuming part of the project. Just be meticulous, get some alcohol to loosen the glue and a knife to scrape it away. Even trying really hard I couldn't get it all off...I've heard that as long as you can get the surface flat and give the new surround a good area to stick to, you'll be okay...but try to get as much as possible.

One thing I just couldn't figure out is how to get my speaker driver DISCONNECTED from the actual cabinet. It looked like two prongs that slide on top of the connections in the back of the driver, but unless I wasn't trying hard enough..I just couldn't get them off. If you can't get them off either then you could do what I did and just put the speaker cabinet on it's side and remove the driver and place it face up on the workspace. It was annoying at time since it was still plugged in but I just worked around it. Does anyone know why I couldn't get these connectors off? I pulled HARD...I think someone mentioned going side to side to slide them off but I don't think that worked either...although...maybe I didn't try hard enough? Do some just not come off?

Anyway, please feel free to post here about your experience...hell...enough people have replied here that I feel like they'd jump in and help you out too.

Good luck!
 
:music: Aw, gee guys, you'll make me blush...

Pauvro, congrats on getting your refoams done, and done correctly.

Here's the skinny on your disconnection problem - the woofer has what's called Faston terminals, and uses Faston connectors on the wires. Its a popular 40 year old connector technology (also used on vintage JBL Consumer speakers internally) - basically a spade type terminal mates with a progressive crimping clamp connector. When used only a few times or new, they have a nice tight fit that stays together very well, perfect for use in a loudspeaker with high internal vibration intensity. Very straightforward to put together on the production line, sometimes difficult to take apart. They should probably nickname them "Slow-offs"!

The problem is pulling on the wire holding the terminal puts a lot of stress on the wire crimp and the relatively weak point where the terminal board is attached to the driver frame. And you found out they sometimes just won't separate!

I've found the easiest way to disconnect them is to get a thin long nose pair of pliers, position the pliers and connector so that you can grasp the connector neck at the sides, just above the end of the terminal, and at a 45 to 90 degree angle to the flat aspect of the connector. Then you rock the connector side to side while gently pulling the connector upwards and away from the terminal. This greatly reduces the force and stress on the connectors. If needed, sometimes you need to use another set of pliers in the other hand to hold the terminal end while separating the two apart. There are also tools specially designed to grasp the connectors but I don't see them very often.

Here's some pics of what you're dealing with.

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Here's an example of a JBL woofer, the 2214H, used in the L100T consumer speaker, and the 4425 compact Professional monitor. The driver is the same but uses Faston connectors in the L100T for ease of assembly, and to ensure proper polarity by pre-fabbing the polarity according to type of connector on the crossover wires corresponding to the terminal on the woofer.

In the 4425, where refoaming or reconing is more likely expected so woofer removal is more common, and for a professional appearance, the woofer uses spring loaded connectors instead.

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The surround on this one is too far off center. The gasket is pinching the bottom of the surround. Notice how much wider the surround roll is at the top than it is at the bottom. That will move the voice coil out of alignment and it will rub.
 

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The surround on this one is too far off center. The gasket is pinching the bottom of the surround. Notice how much wider the surround roll is at the top than it is at the bottom. That will move the voice coil out of alignment and it will rub.

I was worried about that. I don't have the money for new surrounds at the moment...do you suggest I try to remove the parts and redo the process?
 
I was worried about that. I don't have the money for new surrounds at the moment...do you suggest I try to remove the parts and redo the process?
You can try removing the gasket and lifting the surround from the basket. If you accomplish that without ripping the surround, shim the voice coil again (and remove any dirt or other crud that might fall in using masking tape AFTER you pull the shim), and re-glue the surround to the basket without putting the gasket back over it. That should center the voice coil and even out the surround. It'll look a little strange, but it should work properly.
 
You can try removing the gasket and lifting the surround from the basket. If you accomplish that without ripping the surround, shim the voice coil again (and remove any dirt or other crud that might fall in using masking tape AFTER you pull the shim), and re-glue the surround to the basket without putting the gasket back over it. That should center the voice coil and even out the surround. It'll look a little strange, but it should work properly.

I appreciate your input on this and I'm ready to follow your advice, however, the speaker works perfectly now, are we certain that this "surgery" is needed?

Will the way the surround is setup right now definitely cause a rub eventually? I've played the speakers at high volume and for days on end now and there is no issue. Just wondering if maybe my setup is lucky or if you're certain it needs to be adjusted.

Thanks again!
 
IF you used Aleenes you MIGHT be able to wet the foam and lift it off and reposition/basically
refoam the woofer.

it'll be a risky proposition.
if it's not rubbing now i suggest that you leave it alone.
 
YIKES Thats too bad BUT They are working now so mission accomplished . After your little ordeal with its moments of FEAR + DESPAIR just leave them alone and enjoy what you love ..
I share your sentiments exactly . Music can be an important element in ones life and a loudspeaker can become a VERY CLOSE FRIEND
Thanks for your input . I WAS DEFINATELY WONDERING about how to disconnect and re connect terminals .. No idea whether I would have to cut and solder but am seriously considering taking them to a pro I if i can find local .. Just like you said " They Are My Babies " and they are the ONLY speakers I have .. I figure if the surrounds would cost me 20 and I can get them both done by pro for 40 or so Id be HAPPY to pay 10 bucks per speaker for someone experienced to do it .( NO WAY ID BE CUTTING OUT THE DUSTCAP ( inverted ) I saw some you tube vids and think I could do it but I have made mistakes and they are VERY important to me ..
I started athread in the Infinity forum so Im sure I will get plenty of help ..
Alls well that ends well .. Best Regards Andrew
 
YIKES Thats too bad BUT They are working now so mission accomplished . After your little ordeal with its moments of FEAR + DESPAIR just leave them alone and enjoy what you love ..
I share your sentiments exactly . Music can be an important element in ones life and a loudspeaker can become a VERY CLOSE FRIEND
Thanks for your input . I WAS DEFINATELY WONDERING about how to disconnect and re connect terminals .. No idea whether I would have to cut and solder but am seriously considering taking them to a pro I if i can find local .. Just like you said " They Are My Babies " and they are the ONLY speakers I have .. I figure if the surrounds would cost me 20 and I can get them both done by pro for 40 or so Id be HAPPY to pay 10 bucks per speaker for someone experienced to do it .( NO WAY ID BE CUTTING OUT THE DUSTCAP ( inverted ) I saw some you tube vids and think I could do it but I have made mistakes and they are VERY important to me ..
I started athread in the Infinity forum so Im sure I will get plenty of help ..
Alls well that ends well .. Best Regards Andrew
 
IF you used Aleenes you MIGHT be able to wet the foam and lift it off and reposition/basically
refoam the woofer.

it'll be a risky proposition.
if it's not rubbing now i suggest that you leave it alone.

I had a lot of luck utilizing the trick of wetting the outside when I had to redo my other speaker. For now I think I'll leave it be and only redo it if it becomes necessary, thanks for your input.

YIKES Thats too bad BUT They are working now so mission accomplished . After your little ordeal with its moments of FEAR + DESPAIR just leave them alone and enjoy what you love ..
I share your sentiments exactly . Music can be an important element in ones life and a loudspeaker can become a VERY CLOSE FRIEND
Thanks for your input . I WAS DEFINATELY WONDERING about how to disconnect and re connect terminals .. No idea whether I would have to cut and solder but am seriously considering taking them to a pro I if i can find local .. Just like you said " They Are My Babies " and they are the ONLY speakers I have .. I figure if the surrounds would cost me 20 and I can get them both done by pro for 40 or so Id be HAPPY to pay 10 bucks per speaker for someone experienced to do it .( NO WAY ID BE CUTTING OUT THE DUSTCAP ( inverted ) I saw some you tube vids and think I could do it but I have made mistakes and they are VERY important to me ..
I started athread in the Infinity forum so Im sure I will get plenty of help ..
Alls well that ends well .. Best Regards Andrew

Sure, you can take it to a professional and have them do it. However, I'm looking to become more professional when it comes to audio tech, if you're interested in that as well it's rewarding to learn and accomplish this yourself. Just think...in the future you may come across some old, awesome speakers that no one wants because they are "broken" ;-)
 
wooops sorry double post ..
Yep point taken I am just wanting to keep them going . . After its done they may outlast me .. ( If the polydome gods are with me )
 
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