BIG BERTHA
BIG BERTHA
SPECIFICATIONS
Description
: 2x15 + Tweeter Speaker Enclosure
Power Handling
: 700 Watts RMS
Impedance
: 4 ohms
Frequency Response & SPL
: 100 dB SPL @ 1W1M
(–6dB @ 40 Hz and 15 kHz)
Speaker Complement
: (2) 15" custom SWR drivers,
(1) Foster horn
Heavy-Duty Casters, Spring Loaded Rubber Grip Handles,
Front Slot Port, Top Handle and Tilt Back Design for easy
transportation.
Dimensions
: 23.25"W x 36.5"H x 18.5"D
Weight
: 98 lbs.
CONNECTION AND OPERATION
Big Bertha can be connected to any musical instrument amplifier
that is capable of driving a 4 ohm load. To connect your amplifier to Big Bertha, run a high quality
speaker cable (18 gauge or heavier) from your amplifier’s speaker output to one of the designated
speaker inputs (Speakon or 1/4") on Big Bertha’s input panel.
POWER HANDLING
The power output rating for any amplifier connected to Big Bertha should not exceed the enclosure’s
700 watt RMS power handling capacity. Please be aware that exceeding Big Bertha’s power handling
capacity can void the SWR warranty if any damage occurs to your loudspeakers due to overpowering.
FULL RANGE INPUT AND OUTPUT JACKS
Big Bertha features four, full range input/output jacks (two standard 1/4" and two Speakon) wired in
parallel. If you are running two speaker enclosures in parallel, connect the speaker cable from your
amplifier to either jack labeled “IN,” and a second speaker cable from either jack labeled “OUT” to the
input of the second speaker enclosure.
TWEETER ATTENUATOR CONTROL
The large dial found on the input panel of the cabinet is the Tweeter Attenuator. This control is used to
adjust the level of high frequency signal present at the tweeter. A normal setting for this control is
straight up or “twelve o’clock.” Turning the dial fully counter-clockwise removes the tweeter from the cir-
cuit. As you turn the dial clockwise from this position, the high frequency content is increased.
INTERNAL CROSSOVER
Big Bertha’s internal (passive) crossover divides the incoming signal into two frequency bands. The
crossover point is 5 kHz (frequencies above 5 kHz are sent to the tweeter, frequencies below 5 kHz are
sent to the 15" speakers).
BASS SPEAKER ENCLOSURES OWNER’S MANUAL • 7
