UMII-18 requires a custom woofer cutout in all our 18" cabs. Please contact us if you intend to use this woofer!

BTS Ported 18-21 28" x 48" x 17"

Regular price $899.00 $539.00 Sale

Note: Performance of the MDF cabs is the same as the Baltic Birch.     

ATTENTION:

Shipping is now automatically calculated in the shopping cart for drivers, amplifiers, and single pallet orders to residential addresses in the USA.

If ordering multiple pallets, shipping to a business address, and/or for orders to Canada, please send an email to sales@gsgad.com for a shipping quote and/or shipping discount coupon.

In your email, please include:
1. The products that you intend to purchase
2. Your full shipping address
3. If it is a business address, does the business have a loading dock or forklift 

Shipping to a business address WITHOUT a loading dock or forklift will typically be $50 lower than residential shipping.

Shipping to a business address WITH a loading dock or forklift will typically be $100 lower than residential shipping. 

All GSG flat packs ARE AVAILABLE for local pickup. No freight charges!

ASSEMBLY REQUIRED (Assembly Instructions)

ADDITIONAL HARDWARE IS REQUIRED (Shopping List)

TECHNICAL SPECIFICATIONS

Line-up:

Behind the Screen "BTS"

Model:

P28x48x17

Design:

GSG fully-interlocking brace design (patent pending), recessed driver, and accommodation for both terminal cup and Speakon connections. 
Bass-reflex (aka front-ported)

Tuning:

19Hz

Finish:

User selectable

Hardware:

Not included - see shopping list

Output:

>127dB @ 70Hz 
>120dB @ 19Hz

Rec. Driver:

21” pro-audio driver (SAN214.50, NSW6021-6, 21SW152-4, 21DS115-4) or 18" driver depending on model

Rec. Power:

1,000-5,000 watts+ depending on amp/driver combination

Dimensions:

36.0” high x 40.0" wide x 17.0” deep

Weight:

Approx. 150 lbs. each flat pack; total shipping weight including packing and pallet approximately 185 lbs.

Warranty:

1 Year limited warranty against manufacturing and material defects.  Please inspect your cabinet carefully prior to assembly as no returns can be accepted once assembly (glue up) has begun.  Customer is responsible for return shipping and restocking fee.

Protective High Pass

High Pass Filter (all drivers):
12dB / octave Butterworth @19-20Hz

Rec. EQ:

Parametric EQ 21” pro-audio driver: 
Freq=20Hz, Q=0.7, Gain=+9dB

Phase: 180 deg (NX and iNuke amps)