7.6mm is still low for a 15 inch subwoofer driver these days.
it is low compared to an overhung ,inefficient and slightly lower quality range of speakers.Compared to other high quality transducers and pro woofers,it is comparable.
The Adire Audio Tempest driver is a 15" driver, and its Xmax is similar to that of the Shiva (which is approx double that of the JBL driver). Doubling Xmax nets you a theoretical 6dB increase in peak SPL output. However, your amplifier must be able to provide enough power to take advantage of the larger Xmax, and the driver itself should be able to handle the higher power.
my point exactly
only a HUGE amp wil make use of all this amazing Xmax.<89db woofer remember>
here in NZ amps cost alot for a 240/350watt size one
>the 'almighty subwoofer' 2226g tuned to 24hz has
>2.5%THD at 110db spl,so my 33hz tuning will certainly
>have better or similar specs/.
Way too many variables here to make such an assumption. For example, if you use a port that's 1" in diameter, I'll bet you'll get a lot more than 2.5% THD @ 110dB :-).
it isnt an assumption,its a guesstimation.
no need for examples, my port is designed for low airspeed at rated rms input.i assure you,it isnt 1inch port;)
>i chose 2226h for quality and efficiency ,those are
>what made me get it instead of a shiva which would
>require 350watt rms to make decent spl.
Remember: the greater the efficiency of a driver, the larger the box size requirements, or the higher the cutoff frequency of the alignment.
dont worry i did remember,and know this..the 175Litre box reflects this.
to me abit extra mdf,175litres and efficiency is desirable compared to 89db and 90litres,and 350watt amp< 550$>
if i had a 350watt amplifier lying around,i would happily buy an 89db woofer such as shiva in ported box.
:^)
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