Parts for Theater 4 Pi?

I've taken a fancy to building a Theater 4 Pi
and want to find prices on the needed parts.

At http://www.partsexpress.com/ I found these
components:

EMINENCE DELTA-15A 15" DRIVER 8 OHM. Catalog # 290-418
EMINENCE pxb-1k6 HIGH PASS CROSSOVER BOARD 1,600 Hz. Catalog # 290-600
EMINENCE H290 HORN LENS BI-RADIAL 90x40. Catalog # 290-554
EMINENCE PSD2002-8 HORN DRIVER 3 BOLT 8 OHM. Catalog # 290-442

Are these correct?

Thanks.


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