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Usher 8945A 7" Carbon Fiber/Paper Woofer
How would this go in an IB setup?
Will be putting them in the kick panels of my car, thinking of making it IB.
These will work fine for IB as long as you dont expect much below about 80 Hz from them.
Date published: 2013-04-23
Would this work as a mid bass replacement in some old Polk 11Ts?
It's a great choice, however, you want to look at SPEAKER BUILDING and then woofer selection guide to see if the box sizes are the same or very close. Also, make sure the impedance is the same and the crossover should be fine. Efficiency should be about the same as the other driver. You can do more homework by using an online box calculator which uses the specs to calculate response curves etc. ... If you feel like playing with that as well...
Date published: 2012-08-21
What would the best sealed enclosure volume be for this woofer?
I am planning to use this woofer as a mid-range speaker in a 3-way system, crossed over at ~200 Hz and ~3000Hz.What would the best sealed enclosure volume be for this woofer?
The smallest enclosure the driver appears to work well in would be .3 cu ft. You can go up to approximately .75 before the low extension shows diminishing returns. The most level response (Qtc of .70) would be .3 cu ft though.If you want more low end response from the driver, I would suggest a ported box at .5 cu ft with a 2" port 12" long
Date published: 2013-11-20
from forum members who've built with these? Would be a nice feature to link all drivers to P.E. contributor designs - sell more as well.
The most popular design that we have using this woofer is linked below. The project page is listed here: http://www.parts-express.com/projectshowcase/indexn.cfm?project=Usher701.
Date published: 2011-04-22