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NHT speaker help needed

I'm not Ken, but I'll give it a shot. I would imagine it's to tailor the the passed frequencies going to the woofer... Rolling off the top end a bit and not adding too much resistance which could cause a need to re-tweak the tweeter input. (say that 3 times quick). Also, it may achieve some level of inductive reactance change. Any deeper thinking will cause my brain to heat-up and release the magic smoke! :)

Sorry, I have been away for awhile. Any loose structure on one of the woofer could cause "floppy" loose sound... maybe even the connecting leads going to the voicecoil, I would imagine. I guess it could be just one of the woofers affecting the other. Hard to tell.

Hope you survived the storm/hurricane! Best of luck to you, Dan, and all our other Eastern AKer's.
 
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ofajen said:
I'll be interested to hear your thoughts, Ken. In the mean time, it's another example of how a quality speaker design is an integrated whole. Trying to swap in a different driver that "fits the baffle opening" will rarely if ever be a close fit in terms of giving the same overall performance. Of course, sometimes the new sound might be preferred, at least by some, but it will generally be different.

I'll also add that I just got my first pair of NHT speakers in the mail yesterday, a pair of SuperZeroes, and really like them. If I were looking for a slightly larger set of speakers with more extended low end, I'd probably just snag a pair of SuperOnes or another one of the NHT bookshelf models with the 6.5" woofer, rather than taking the trouble to design one from scratch. Those slightly used models are really a bargain at the prices they go for now.

Cheers,

Otto
Click to expand...


Hope you are enjoying your SZ's!

Very few people outside the speaker manufacturing biz understand what a complex and delicate job building drivers is. I have, on a few occasions, seen drivers worth several hundred thousand dollars sent to the scrap pile because the curvature radius of the surround cross-section was off by a fraction of a mm. A cone make is probably using 5 or 10 different paper formulations at any given time. They all look the same to the naked eye, but have very different responses. Adhesives must be applied at the correct temperature and humidity. Cone profiles and surround curvatures have a very big effect on response. Etc. So, since a manufacturer has a very difficult time avoiding QC failures built with nominally identical component parts, how can a different factory get close to matching a driver, even if they spent a year trying?? They can't.

Sorry, I want to keep my vintage speakers working as much as the next guy. But, a reconed SuperZero would >never< pass NHT's Quality Control, and it won't sound the same as the original. Of course, it still might be worth doing.

Now, there are a couple of factors that determine how close one can get


Oh damn... I just lost most of this post... will rebuild tomorrow. Sorry...

-k
 
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