The 3BSST2 is a dual mono design audio power amplifier with two channels of 150W each. Each channel has switch select- able balanced and single ended inputs and independent gain selections of 29dB or 23dB. These SST2 amplifiers also have SoftStart power control circuitry to eliminate high inrush currents when A/C power is applied. The power-up or turn-on of the 3BSST2 may be activated by the push-button switch located on the front panel or by hard wired remote control voltage.

Balanced and unbalanced inputs

Variable attenuator (potentiometer) and gain select switch (23dB or 29dB)

No fans or other moving parts

Convection cooled and housed in a fully aluminum chassis

Bridging switch configures amplifier into a single 400W channel

19" black rack mountable faceplate (3U)

Power Capabilities:
150W into 8 Ohms (250W into 4 Ohms)
400W into 8 Ohms (Bridged Mono)

Power Output:
150 watts per channel into 8 ohms
250 watts per channel into 4 ohms

Gain:
High: 29dB = 28.28V/V
Low: 23dB = 14.14V/V

Sensitivity:
High: 1.0Vin = 100W out with an 8 load 1.3Vin = 150W out with an 8 load Low: 2.0Vin = 100W out with an 8 load 2.6Vin = 150W out with an 8 load

Input Impedance:
Individual mode: Single 60K Ohms, ended Balanced 20K Ohms
Bridged mode: Single ended 15K Ohms, Balanced 10K Ohms

IMD or THD + noise:
< 0.005% 20Hz to 20kHz at 150 watts into 8 W
< 0.007% 20Hz to 20kHz at 250 watts into 4 W

Noise:
Measured with input shorted, 20 Hz to 20K Hz.
>110dB below rated output 29dB gain (- 75 dBu)
>113dB below rated output 23dB gain (- 78 dBu)

Slew Rate:
> 60 volts per microsecond

Power Bandwidth:
< 1 Hz to over 100 kHz

Damping Factor:
Over 500 at 20 Hz, ref. 8 ohms

Footprint:
19" version with handles: 48.3cmL x 32.2cmD x 16cmH 19"L x 12.7"D x 6.3"H
17" version: 43.2cmL x 28.3cmD x 16cmH 17"L x 11.2"D x 6.3"H

Weight:
approx. 19.1 Kg (42 lbs)

Power Consumption & Heat Load:
At Idle: 127 Watts
Max. Heat Dissipation: 433 BTU/Hr.
2 channels @ 150W @ 8 ohms: 668 Watts
Max. Heat Dissipation: 1255 BTU/Hr.
2 channels @ 250W @ 4 ohms: 1096 Watts
Max. Heat Dissipation: 2033 BTU/Hr.
Bridged @ 450W @ 8 ohms: 1053 Watts
Max. Heat Dissipation: 2057 Btu/Hr.