Working on Advent 5002's

Mick1putt

Mick1putt

New Member
New here and just bought a pair of Advent 5002. Foam suspension is gone, I've read most of what has been posted in this forum about replacing the foam suspension, and ordered them from Rick Cobb (thanks to recs here) last week, they should arrive today. Any tips or advice to make sure this goes smoothly?

I consider myself very limited in knowledge and experience, but I'm not afraid to try anything, especially with a little guidance from experts ;). I've replaced foam suspension on my JBL L36 a couple of times, and it's gone well-- always harder to do than the videos and instructions make it look, but they worked when I was finished.

So, other than replacing the foam, what else should I look for, and consider trying to fix? The tweeter domes are crunched in (I'll try to add some pics), not sure whether that's a problem or not? I guess I'll know a lot more after I replace the foam and get them hooked up and can listen.
 
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I'd add that if the crossover capacitors are original it's a good idea to replace them. These woofers should not be a major problem to do foam replacement. I did my pair of NLAs and they came out fine. Good luck in your job, enjoy those Advents!
 
Thanks, I'll handle them carefully. Here are a couple of pics. Are those cracks and dented domes anything to be concerned about?

both before refoam

both before refoam

  • Media owner Mick1putt
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The other tweeter

The other tweeter

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dome dented and several cracks in plate

OK, Now I'm going to show how inexperienced I am...I don't know anything about the crossover capacitors. Is there a thread in this forum that would enlighten me on how to locate and replace them? I'll search, but if you know where I can get educated point it out please.
 
Here's a great link-
http://audiokarma.org/forums/index.php?threads/recap-your-speakers-like-a-boss-part-1.396057/

As for the cracks, most crossover plates and tweeter faceplates on older speakers will crack when the screws are over-tightened. I wouldn't worry about that as long as the cracks are not large enough to allow air to leak out while the speakers are in use.

Do the tweeters sound good as is? If you're okay with the way they look and they still play fine, then you don't have to pop them out.
 
Thanks, Crazy, that is just what I needed. I looked at it quickly and sure I can handle that.

Don't know how tweeters sound, I haven't hooked the speakers up yet. I was going to wait till I finished the foam replacement, but makes sense to recap them while I've got them opened up, so it's going to be a little longer before I try them out. Nah, I can't wait, I'm going to replace the foam and crank them up, see how they sound, then decide what else I'll take on.
 
If you would like to check the tweeters while waiting for your foam and caps you can lay the speakers on their backs and play them at very low volume for a few seconds. That way the woofers are less likely to get damaged and you can see if the tweeters work. I also recommend getting a good look at the fuse on the back to see if it's blown. I had a pair of 4002's with bad fuses, and one of the tweeters came back to life when I replaced the fuse. The other tweeter was blown and needed to be replaced.

The 4002's are great speakers, so I would imagine the 5002's will sound a little better due to the larger cabinet. Keep giving us updates...:music:
 
Mick1putt said:
Are those cracks and dented domes anything to be concerned about?

The other tweeter

The other tweeter

  • Media owner Mick1putt
  • Date added
dome dented and several cracks in plate
Click to expand...

I've had good luck repairing cracks like that using methyl ethyl ketone (MEK).

Turn the part face down laying the cracked portion(s) onto a flat surface. If cracks spread open, devise a method to hold them closed, and to block loose pieces into position.

Rub a Q-Tip dipped in MEK on the backside of the part along the crack. Capillary action draws MEK into the crack and "welds" the plastic together. Let it sit for a couple of hours then check the results.

Safety Note: Only use MEK with lots of ventilation. Avoid contact with skin. Avoid nearby sparks or flames.

This works well for PVC and ABS plastics. I have tweeter face-plates once cracked much like yours that now show no visible signs of damage. Though if you should try this, you might test a small section first. Because, as always, YMMV ...
 
Thanks for the MEK tip, I'm a little afraid to take them off the cabinet and have them fall apart.

Good call on the fuses, Crazy-in-az, one was blown. I did the tweeter check and they seem fine. I'll work on the foam today, and maybe give them an honest test tonight.
 
Well, life/work got in the way and this project is taking a lot longer than it should have. No problem replacing the surrounds, but there is definitely a problem with the high end on one of the speakers; very low output, no sharpness, just sounds dull. Is that most likely a problem with the crossover capacitors, or the tweeter itself?

I'm going to recap them following wigwam jones guide in link above. Any other suggestions?
 
Do you have a mutli-meter? If you do you can take the tweeters out of the cabinets and completely disconnect them. Set the multi-meter to the lowest ohm setting (mine goes to 200) and measure across the terminals. If the tweeters are good they should measure somewhere between 5 and 7 ohms. If they measure okay then a recap should bring them back to life. If they are really low or measure at zero then you will need to replace it.

I believe the 3002, 4002 and 5002 all use the same tweeter. The replacement I needed for my 4002's came from a 3002 and it sounds identical to the original.
 
More help help from crazy-in-az, thanks! I do have a multi-meter and will pull that tweeter and check it tomorrow.
 
It's only taken me 9 months to get back to this project, what's the longest a thread has been dormant and then revived?

I checked the resistance on both tweeters, one was 5.4, the other didn't register. I guess I'm shopping for a new tweeter, and capacitors.

FYI, I just bought a pair of Legacy ii's for $30 and ordered replacement surrounds for them a couple days ago Anxious to see how they sound.
 
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