SWR SM-900.

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SWR SM-900.

Bass Amplifier.

Details

The SWR SM-900 Bass Amp has the power, the sound, and the versatility bass players dream of. It can be run mono, stereo, or biamped and delivers 350W RMS stereo and 800W mono into 4 ohms. It has 2 independent and footswitchable 3-band, semi-parametric EQs, sidechain stereo and mono effects loops, an effects blend control, tuner send, adjustable limiter, a built-in crossover, and an XLR record out with pad and ground lift. Fan cooled, rackmountable.

FRONT PANEL
  • All tube preamp gain stages
  • Dual independent input jacks compatible for both active and passive instruments
  • Gain control with LED peak clipping indicator
  • Limiter with variable threshold control
  • Exclusive Aural Enhancer circuitry
  • Master volume control w/clip LED indicator
  • Active bass and treble controls
  • 2 independent switchable
  • 3-band semi-parametric EQs
  • EQ footswitch
  • Effects blend control
  • Tuner send
  • Electronic crossover
  • Rackmountable
  • Bi Amp Crossover Point Control: 100Hz to 1000Hz
  • Rack Handles
REAR PANEL
  • Stereo and Mono Effects Loop
  • Balanced XLR Output with select switch for Line or Direct Mode
  • Ground lift & pad control
  • High and Low Crossover Outputs
  • Power Amp Assign Switch selects Bridge or Stereo Mode
SPEAKER OUTPUTS
  • 2 - 1/4" jacks each for Left and Right Stereo Out
  • One Speakon jack for Left and Right Side Output
  • One Speakon Output Jack for Mono Operation
  • Speaker fuses (x2): 3AG, 10 Amp, Fast Blo
  • 3AG, 8 Amp, Slow Blo Line Fuse
  • On/Off Switch
FREQUENCY RESPONSE
  • -3dB @ 20Hz and 40KHz
SENSITIVITY
Full output8 ohm load, 100Hz
Passive Input Jack50 millivolts>
Active Input Jack200 millivolts
Power Amplifiers (Effects Return Jack "in")1.6 volts>
DISTORTION
Power Amplifiers (Effects Return Jack "in")0.03% THD
I.M. Distortion0.06%
System Distortion (Gain and Master Volume full, Enhancer at minimum and Tone controls set flat)0.4% THD
Signal To Noise Ratio-75dB (<8 millivolts typical)
Equivalent InputNoise8.9 microvolts
INPUT IMPEDANCE
Passive/Active Input800kOhms
Active Input60kOhms
Effects Return27K Ohms
OUTPUT IMPEDANCE
Effects Send100 Ohms
Tuner Send100 Ohms
XLR1.5kOhms
Crossover High and Low Outs100 Ohms
SUGGESTED SPEAKER ENCLOSERS
  • Megoliath
  • Goliath Senior
  • Big Bertha
  • Goliath III
SUGGESTED SPEAKER COMBINATIONS
  • (2) Goliath IIIs
  • (2) Son Of Berthas
  • (1) Goliath III & (1) Son Of Bertha
  • (1) Goliath III & (1) Big Ben
GENERAL
112AX7 Preamp Tube
1Cooling fan
DIMENSIONS19" W x 3-9/20" H x 13-3/4" D
WEIGHT26 lbs.
POWER OUTPUT:Bridge/Mono Mode 900 Watts @ 4 Ohms, 650 Watts @ 8 Ohms, 440 Watts @ 16 Ohms (minimum load = 4 Ohms)
Stereo Mode (per side): 400 watts @ 4 Ohms, 240 watts @ 8 Ohms, 144 watts @ 16 Ohms (minimum load = 2 Ohms)

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