Thanks for that. I might even buy the same woofer and see if I can reproduce his results
This also works for woofers that have a hard material dust cap blasting out some unnecessary squawking. A foam strip as long as 2/3rds or 3/4ths the width of the dust cap, applied across the center of the dust cap, successfully damped the blast. The gray foam appeared to work but fell off. The black marine foam worked after I carved the black foam to a smaller profile. The foam bits helped a lot but did not replace passive crossover filters of BSC and notch filters. However, the foam made possible a higher crossover point, less crossover (rc) noise and less cone breakup. That was alright for a bit of foam.
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Thanks. That was my guess. It's that breakup that bothers me most. I am a bit afraid to start modifying them, but have some other cheap drivers to play with, so I may go for it. I have a can of micro-balloons that I keep thinking could be handy. I know a lot of work has been put into cabinets and driver mods, so it is pretty intimidating to wander in and think I understand a tenth of it.
1st thing to do with the FF125 is 2 coats of Zig 2-way glue on the backside at the juncture of the surround and the cone.
dave
dave
It would be hard to modify them - brand new (you just got them right?)
I like having one project going... thinking making a set with MDF; 1" backs, 3/4" top/bottom and 1/2" sides. I did find a huge 1/8" sheet of cork also (-;
TVR, please free to borrow some of these port-in-front-boxes. I know the midrange out-the-front is a concern, I don't think there is much if any (ear test).
I like having one project going... thinking making a set with MDF; 1" backs, 3/4" top/bottom and 1/2" sides. I did find a huge 1/8" sheet of cork also (-;
TVR, please free to borrow some of these port-in-front-boxes. I know the midrange out-the-front is a concern, I don't think there is much if any (ear test).
the physicist in me wants to think that these dimples add structural rigidity to the speaker cone.
on the other hand, that's no woofer, it's a 89 dB tweetNO IT IS NOT A TWEETER IT'S A FULL RANGE SPEAKER what an idiot am i.
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Zig eh? Acid free they say. Just break the pen open and paint it on? About how far up the cone? Cabinet is ready. Time for test measurements and some of the non-permanent mods. The Mortite idea sounds quite reasonable. As soon as I finish chilling out from work with a bit of liquid chill, I'll get busy.
Doug, new with about 40 hours on them.
Doug, new with about 40 hours on them.
The plots look much better. FOr that price they had better be. But the one up and one down in the FF line are also better behaved. It seems the 125 is the most difficult. This is not a BAD driver, it is a challenge. I can show you a bad driver. Rob got them for 69 cents each.
since that sounded like an invitation, it's the MDF that might have some of us exercised 😉
Nice use of cheap materials!
How thick does the cork need to be? That thin, adhesive backed stuff will work? Or must be like 1/4" thick, or more?
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