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In Reply to: RE: Altec Valencia Cabinet Mods posted by les winter on December 10, 2009 at 12:14:19
Les,
Can you comment on the difference between the 5 versus 8 cu. ft. cabinet?
When the initial T/S specs were determined it appeared that the 416 was suited for the smaller cabinet.
Thanks,
Don
Follow Ups:
Hello Don.
The larger box gives more extension. Not floor shaking bass, but more lf growl. What I am unsure of is if this extension comes at the price of inferior transient response.
Since I intend to use a pair of subwoofers (NHT 1259, air suspension, QT of 0.6), the extension may be meaningless.
If anyone has an opinion about this I would sure like to hear it.
regards
Les
Hi Don.
I'm still fooling with optimum venting. Simulations show the larger box rolls off earlier but goes lower. I seem to be detecting some heaviness in the male bass voice, which sounds like a bump in the upper bass. It's going to take me some time to figure out.
Agreed, so a larger net Vb and/or lower tuning and/or damping the vents are the usual solutions.
GM
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
Is it also possible to use a transistor and tube amp during your listening sessions. I think the output impedance of the amp will relate to the different cabinet volumes, if I understood the comments from GM. A tube amp would go better with the larger enclosure.
Don
You did. ;^) Typically, 10-12 ft^3 MLTLs with tunings around Fs have proven to be the most popular DIY alignments of mine for the various 416s whether SS or tube PP driven. SET amps typically require somewhat larger cabs to go low.
GM
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
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