Advent speakers
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tx_polkhead
Well-Known Member
I am about to order a refoam kit for a set of Advent Legacy II's. This will be my first 'speaker repair' so any words of wisdom would be of help. I've searched quite a bit here and there seems to be a split regarding shimming the VC and replacing the dust caps or doing the repair job without removing the dust caps. Right now I am leaning towards the latter, can you shed some light on your decision.
Thanks
Abel
Thanks
Abel
mhardy6647
Lunatic Member
Vintageaudio should chime in; he has a pair of 'em...
As a guy who does it for a living....
I would go the safe route and simply just shim. You do NOT have to replace the dustcap as the rumor goes. When I first starting messing with speakers, I found that it is possible to refoam without shimming, but the VC gap has to be huge so you have room to play around. Also, if its not right on center, then you have the risk of mal-forming the voice coil former at the extreme of travel when the edge of the former rubs against the magnet pole piece. its a rarity but it can happen. Then when trying to crank your favorite track with a nice drum snare you get a scratching noise in one speaker....ugh.
I will use a hobby knife / exacto and cut away the dust cap as close to its base as possible, leaving about 1cm still attached. I then flip up the dust cap, insert my shims and refoam. When the glue is done drying, I pull the shims, set the dust cap back down so that it sits right, apply some glue and use a very small weight to keep the dust cover there while it dries. Sometimes a very small tonearm weight is perfect for this purpose.
Just my thoughts.
I would go the safe route and simply just shim. You do NOT have to replace the dustcap as the rumor goes. When I first starting messing with speakers, I found that it is possible to refoam without shimming, but the VC gap has to be huge so you have room to play around. Also, if its not right on center, then you have the risk of mal-forming the voice coil former at the extreme of travel when the edge of the former rubs against the magnet pole piece. its a rarity but it can happen. Then when trying to crank your favorite track with a nice drum snare you get a scratching noise in one speaker....ugh.
I will use a hobby knife / exacto and cut away the dust cap as close to its base as possible, leaving about 1cm still attached. I then flip up the dust cap, insert my shims and refoam. When the glue is done drying, I pull the shims, set the dust cap back down so that it sits right, apply some glue and use a very small weight to keep the dust cover there while it dries. Sometimes a very small tonearm weight is perfect for this purpose.
Just my thoughts.
dc270
Now Off the Reservation
As I have noted before, you shim the voice coil to keep it vertically aligned, the spider keeps it centered. With loose gaps like older Advents and some others it is perhaps not as critical- but I do it anyway- it is excellent insurance!
DC
wank
Moks by popular demand
Back to the OP's question - I've had Legacys, have heard 5002s, and own 6003s (2 pair), and my impression of them is that the Legacys and 02s sound very similar. There's a difference from the wider baffle from the Legacy cabinet: fuller sound, less of the audiophile imaging effect, and a smoother broader sound from the Legacy models. But with the same or very similar tweeter, you get that same smoothed over top end. The 6003s are also very similar, though a little more prominent in the midrange, smoother in the low midrange, a little more sparkle up top.
As for refoaming, I've done these woofers shimmed and unshimmed. It's a breeze either way, as the VC gap is quite large, so hooking a AA battery takes care of most of the alignment (also makes getting under the foam when doing the basket glue easier). But after two bad alignments without shims with other woofers, I'll always shim from now on. And dustcaps are really cheap, so why skimp?
This was my first try, I didn't want to cut the dust caps off, but I did so I could shim (not wanting to risk voice coil rub). I pretty much used the directions at this site (also purchased my kit from him):
http://www.citlink.net/~msound/refoam/
One nice thing, in my case the new dust caps were a tiny bit larger than the old ones, so they covered the lip the old ones left on the cone (so they look original). I you're careful and take your time its pretty easy. The only real issue I had was my trying to glue the surrounds to the cones as soon as I put the glue on - they really don't stick until the glue has a little time to set up (as the web site instructs you to do). Let us know how you do, I really enjoyed doing mine,
http://www.citlink.net/~msound/refoam/
One nice thing, in my case the new dust caps were a tiny bit larger than the old ones, so they covered the lip the old ones left on the cone (so they look original). I you're careful and take your time its pretty easy. The only real issue I had was my trying to glue the surrounds to the cones as soon as I put the glue on - they really don't stick until the glue has a little time to set up (as the web site instructs you to do). Let us know how you do, I really enjoyed doing mine,
grillebilly
Empty Head
good advice
I am getting ready to do a pair of Advents also. the advice I got was to shim, better to learn how to do it right. I am getting the repair parts through Reedger, who is a member here. he was very kind and helpful. look him up.
I am getting ready to do a pair of Advents also. the advice I got was to shim, better to learn how to do it right. I am getting the repair parts through Reedger, who is a member here. he was very kind and helpful. look him up.
