In Reply to: Speaker foam kits: anyone ever tried them? posted by barryhalldesigner on May 22, 2016 at 10:21:18:
I replaced the foam surrounds on a pair of Audio Note AN/J's a few years ago. Its not difficult if you are patient and take your time. As with most things the first time you do it the first one took a bit of time and the second one went much quicker. I used the instructions from Audio Note linked below and they turned out great.
A few tips:
Make sure you clean off all of the old surround residue. I used a putty knife and a razor blade. Work slowly and carefully. I recommend using poly-acrylic latex speaker glue as it is water soluble and slow setting. Apply the glue and spread it evenly on both surfaces to be glued. Attach the surround to the frame first and then to the cone. As the glue is slow setting, the surround can be re-positioned slightly if it is not perfectly positioned when it is joined to the frame and cone. You should be able to line up the inner edge of the surround in the same position on the cone as the original surrounds. If it is not exact to the millimeter don't worry. The tension of the surround on the cone will position itself and it may be just a bit off from the originals. After it has been glued in position for a couple of minutes, very gently press the cone with even pressure toward the voice coil. You should not hear any rubbing if the surround has been positioned properly.
Another method is to record a 30 hz tone to play through the speaker while the glue is starting to set. Play the 30 hz quietly and listen for any strange buzzes. Glue hardens slowly so you can lightly heat up the surround with a hair dryer pushing the surround down with finger or suitable tool if you need to re-position. Once the surround is firmly attached play the 30hz tone a little louder so the cone moves approx. 1/8" and listen again if the sound is clean. If there are some rubbing noises you can still fairly easy stretch the surround a little. The cone tends to align itself very fast. After a couple hours when glue hardens more test it again and if all is good leave overnight to dry completely.
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Follow Ups
- RE: Speaker foam kits: anyone ever tried them? - R Browne 20:52:29 05/22/16 (1)
- RE: Speaker foam kits: anyone ever tried them? - barryhalldesigner 04:36:12 05/23/16 (0)