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... sound batting and/or weighting speakers ...

Hello to all... 

Need some thoughts and/or suggestions: I am using a pair of KEF Q1s - luv the sound, so much more full than I ever expected - and the driver has such cone extension that the speaker box really vibrates. Now - I am assuming that the vibration really = the possibility of distortion ( or a smearing at higher volumes, tonal deformity, if that is different) and I am wondering if this is more controllable by:
Adding more sound batting into the enclosure (thru the bass port)
Weighting the speakers with a bag of lead shot (?) over the top of the driver/cabinet box ( the cabinet is not flat on top, so I can't use a brick or solid weight; I'm guessing the weight should be something moldable, so the lead shot in a bag is possible if I can figure a way to affix it to the cabinet...)

Thoughts? Suggestions? Alternates?
insearchofprat
kenjit
1,771 posts
 
Physical, operational limitations on designs cannot be escaped through tweaking, weights, etc.
 A box is a box whether it costs 100 bucks or 10000 bucks. 


b_limo's avatar
b_limo
2,273 posts
 
with all due respect, that is a completely ignorant statement from one of the self proclaimed greatest speaker designers / builders of all time, who’s actually never done either 😀
b_limo's avatar
b_limo
2,273 posts
 
Some boxes are square, some are rectangle, some are trapezoidal, some have extremely thick baffles, some are designed to resonate (harbeth) some are made out of mdf, others hdf, others carbon fiber, some have ports, others do not. Some boxes are incredibly well braced (look at ls50’s), some have curved front baffles, some have narrow front baffles, some speakers are designed to work well with wide front baffles, some use special glue to hold them together (dynaudio), some are lock mitered.
Shoot, there are even differences with regards to the construction of cardboard boxes!
b_limo's avatar
b_limo
2,273 posts
 
With regards to the original post and the original question, I’ve asked the same question before and was informed bracing, and cross bracing, the inside of the cabinet will yield the best results to combat the problem which you describe!  
Douglas makes a good point in that your time, money and effort might be better spent moving up in speakers.  If you like the Kef q1’s, look for some kef xq1’s or anything in the kef xq series.  I’ve had 2 pairs of xq(‘s and they are lovely speakers. Coincentric design with a super tweeter pulled straight from their reference series , curved boxes to reduce internal standing waves, and extremely well braced inside.

I sold my last pair of xq5’s for $600...
tomic601's avatar
tomic601
12,869 posts
 
the reality is the OP can do both.

I think it was 1985 when i built a cabinet within a cabinet and air core crossover for a KEF 104 a/b customer all wired with Fulton....ran rings around the factory 104....... but not the Cantata...

OP have any appetite to do both ????? upgrade and tweak ?
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