Crescendo Audio CONTRALTO 18" Subwoofer - 2500w RMS

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Crescendo Audio CONTRALTO 18" Subwoofer - 2500w RMS

Well over one year of development and prototyping has driven the production of the new Crescendo Subwoofers. Designed with the basshead in mind, these subwoofers are destined to become one of the top ground pounding subwoofers available.

The Contralto series is our uncompromising competition certified model, available in 10”/12”/15”/18”

An extremely strong triple stack motor with a solid 1 piece T-Yoke with extended pole propels the Contralto’s 8 layer 3” flatwound coil mated to the lightweight black anodized aluminum former optimized for heat dissipation, with all sizes sporting multiple Nomex spiders for long lasting suspension and precise performance. Power is transferred to the coils with low resistance double stitched tinsel leads, through oversized push terminals, ready for multiple runs of 8awg/10awg in and out. A vented rear pole along with under spider freeflow venting aids in extensive heat dissipation performance.

Up front, a rigid yet lightweight carbon fiberglass/pulp bonded cone pumps out the bass in conjunction with the tall, custom designed treated foam surround stitched for added durability in extreme applications.

Keeping it all in one piece is the custom finished cast aluminum basket, designed for high levels of clearance, airflow and strong enough for any competitor to not have to worry about cracked spokes even with such a heavy duty motor as the Contralto series sports.

The Contralto series is rated at 2500w RMS, with exception of the 10” (1800w RMS, 2.5” coil 8layer)

Ready for competition in the lanes, with full recone parts stocked in all different ohm load configurations for those competitors who eventually need to recone from throwing 5kw to one of these, or someone who needs to recone their Contraltos to a different ohm load to suit their new setup.

Specifications
C18 D1
C18 D2
C18 D4
FS (Hz) 22.5hz 21.2hz 22.1hz
Qes 0.35 0.34 0.37
Qms 5.01 5.44 4.99
Qts 0.33 0.32 0.34
Vas 270.9L 306.1L 287.5L
BL (NA) 17.3 n/A 24.0 n/A 31.7 n/A
Efficiency 91.3db 91.2db 91.1db
X-Max 26mm 26mm 26mm

Mounting Dimensions (inch)
C10
C12
C15
C18
Hole Cut-Out
9 5/16"
11 1/8"
13 3/4"
16 13/16"
Overall Diameter
10 15/16"
12 15/16"
15 3/4"
18 1/2"
Mounting Depth
8 7/8"
9 5/8"
10 1/4"
11 13/16"