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SM 500™

4400300000

The one that started it all. The SM-500 is the descendant of the original SWR classic amplifier, the world-famous SM-400. With the original SWR tube preamp, and the trademark graphic/semi-parametric four-band EQ, bassists can dial in the sweet spot of each string on a bass guitar, emphasize the correct lows, mids and highs for their instrument, and bring out the key qualities of the fundamental note no matter what the playing situation may be. Over the years, we’ve added features like a side-chain effects loop, a stereo master volume control, and transparency (for the crystalline highs) – but, essentially this is the same amp that started a revolution in bass amplification twenty years ago … and nothing else sounds quite like it.

Features: 500 watts mono/250 watts per channel stereo @ 4 ohms, classic SWR tube preamp with Aural Enhancer™, master bass, treble and transparency controls, four-band semi-parametric/graphic EQ, studio-quality XLR out with ground lift and level pad, variable limiter, side-chain effects loop with blend control, tuner send, speaker on/off switch, Speakon® and 1/4” speaker outputs. Speakon-to-Speakon cable for bridge-mono operation included.

 

Model Name SM 500™
Model Number 44-00300-000
Series Classic Series
Type Mono/Stereo Bass Amplifier Head
Description The classic SWR® amplifier. Rack mountable. Can be run mono or stereo.
Features FRONT PANEL FEATURES
Dual independent input jacks compatible
for both active and passive instruments
Gain control with LED peak clipping indicator
Limiter with variable threshold control
Aural Enhancer™ Control
Bass Control +15dB - 15dB (shelving point 80 Hz)
Treble Control +15dB - 15dB (shelving point 2 KHz)
Transparency Control +15dB - 15dB (shelving point 5 KHz)
Variable Graphic Equalizer +15dB - 15dB:
Band One: 40 Hz to 160 Hz
Band Two: 80 Hz to 320 Hz
Band Three: 200 Hz to 800 Hz
Band Four: 400 Hz to 1600 Hz
Effects Blend Control
Dual Concentric (Stereo) Master Volume Control
Rack Handles
Speaker On/Off Switch
Power On/Off Switch

REAR PANEL FEATURES
Side Chain Effects Loop
Tuner Output
Balanced XLR Output with select switch for Line or Direct Mode, ground lift & pad control
Power Amp Assign Switch selects Bridge or
Stereo Mode
Speaker Outputs:
Two 1/4" jacks each for Left and Right Stereo Out
One Speakon® Speaker output jack for Left and Right Side Output
One Speakon Output Jack for Mono Operation
Speaker fuses (x2): 3AG, 8 Amp, Fast Blo
Line Fuse: 3AG, 7 Amp, Slow Blo

INTERNAL FEATURES
(1) 12AX7 Preamp Tube
Cooling fan
Power Output Bridge/Mono Mode
500 Watts @ 4 Ohms
400 Watts @ 8 Ohms
250 Watts @ 16 Ohms
(minimum load = 4 Ohms)

Stereo Mode (per side)
300 watts @ 2 Ohms
250 watts @ 4 Ohms
150 watts @ 8 Ohms
(minimum load = 2 Ohms)
Impedance (Ohms) N/A
Speakers N/A
Channels 1 Channel
Controls Gain with preamp clip indicator,
Limiter,
Aural Enhancer,
Bass,
4-Band variable graphic equilizer,
Treble,
Transparency,
Effects Blend,
Master volume
Covering Black steel chassis
Weight 20 lbs.
Dimensions Height: 3.5"
Width: 19"
Depth: 13.375"
(2 rack spaces)
Power Handling N/A
Tube Complement (1) 12AX7 Preamp Tube
Accessories N/A
Cover N/A
Footswitch N/A
Frequency Response (Power Amplifier) 10Hz and 40KHz
SPL N/A
Suggested Speaker Enclosures Megoliath™
Goliath Senior™
Big Bertha™
Henry 8x8™
Triad™
Goliath III™
Suggested Speaker Combinations (2) Goliath III
(2) Triads
(2) Goliath Junior III™
(2) Son Of Bertha
(1) Goliath III & (1) Son Of Bertha
(1) Goliath III & (1) Big Ben™
(1) Goliath III & (1) Goliath Junior III
Input Impedance Passive/Active Input: 800K Ohms
Active Input: 60K Ohms
Effects Return: 27K Ohms
Output Impedance Effects Send:100 Ohms
XLR Balanced Out: 750 Ohms
Sensitivity Full output under clipping, 8 ohms load, 100 Hz
Passive Input Jack: 38 millivolts
Active Input Jack: 155 millivolts
Power Amplifier (Effects Return Jack "in"): .5 volts
Signal to Noise Ratio -72 dB(<10 millivolts typical), EQUIVALENT INPUT NOISE
9 microvolts
Introduced
Model Name SM 900™
Model Number 44-00100-000
Series Classic Series
Type Mono/Stereo Bass Amplifier Head
Description Top of the line, 900 watt, feature packed, powerhouse amplifier. Rack mountable with foot switchable EQ section. Can be run mono, stereo or bi-amped.
Features FRONT PANEL FEATURES:
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
Our 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
Rack mountable.
Bi Amp Crossover Point Control: 100 Hz to 1000 Hz
Crossover Slope: 12 dB per octave
Rack Handles

REAR PANEL FEATURES:
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:
Two 1/4" jacks each for Left and Right Stereo Out
One Speakon® speaker output jack for Left and Right Side Output
One Speakon Output Jack for Mono Operation
Speaker fuses (x2): 3AG, 10 Amp, Fast Blo
Line Fuse: 3AG, 8 Amp, Slow Blo
On/Off Switch

INTERNAL FEATURES:
(1) 12AX7 Preamp Tube
Cooling fan
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)
Impedance (Ohms) N/A
Speakers N/A
Channels 1 Channel with dual switchable EQ banks
Controls Gain with preamp clip indicator,
3-Position EQ selector switch,
Aural Enhancer,
Bass,

EQ 1:
3-Band Semi-Parametric EQ

EQ 2:
3-Band Semi-Parametric EQ

Crossover Frequency,
Balance,
Limiter,
Treble,
Effects Blend,
Master volume
Covering Black steel chassis
Weight 26 lbs.
Dimensions Height: 3.45"
Width: 19"
Depth: 13.75"
(2 rack spaces)
Power Handling N/A
Tube Complement (1) 12AX7 Preamp Tube
Accessories Includes 1-Button Footswitch P/N 0066250000
Cover N/A
Footswitch Includes 1-Button Footswitch P/N 0066250000
Frequency Response (Power amplifier): -3dB @ 20Hz and 40KHz
SPL N/A
Suggested Speaker Enclosures Megoliath™
Goliath Senior™
Big Bertha™
Goliath III™
Suggested Speaker Combinations (2) Goliath III
(2) Son Of Bertha™
(1) Goliath III & (1) Son Of Bertha
(1) Goliath III & (1) Big Ben™
Input Impedance Passive/Active Input: 800K Ohms
Active Input: 60K Ohms
Effects Return: 27K Ohms
Output Impedance Effects Send: 100 Ohms
Tuner Send: 100 Ohms
XLR:1.5K Ohms
Crossover High and Low Outs: 100 Ohms
Sensitivity Full output, 8 ohm load, 100Hz
Passive Input Jack: 50 millivolts
Active Input Jack: 200 millivolts
Power Amplifiers (Effects Return Jack "in"):1.6 volts

Distortion
Power Amplifiers (Effects Return Jack "in"): 0.03% THD
I.M. Distortion: 0.06%
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 INPUT NOISE
8.9 microvolts
Introduced
guitars