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INTRODUCTION
The SM-900 is truly the “State of SWR’s Art” in bass amplification electronics. The SM-900 is only
slightly deeper and heavier than the SM-500, yet delivers twice the power and includes new fea-
tures such as our very flexible tone section. Along with shelving-type Bass and Treble controls, the
equalization section consists of two independent 3-band semi-parametric EQs. This provides the
user with two analog presets via a silent footswitch, or three presets (EQ 1, EQ 2, or EQ 1+2)
using the manual slide switch located on the front panel. You can now go from a solid groove
sound to soloing with just the tap of your foot. Several suggested EQ settings are included in the
tone section of this manual.
The SM-900 also boasts a studio-oriented “side chain” effects loop allowing the user the diversity
of an effects unit while maintaining the constant clarity and natural tone of the instrument. SWR’s
exclusive “To Tuner” jack is also on a side chain. Remember when you had to unplug your bass
from your amp and hook into your tuner and frantically tune up between songs? Or patch the tuner
between your instrument and amp, thus degrading sound quality? Those times are history.
Add to the above both stereo and mono effects loops, stereo/mono operation of the power amps,
biamp capabilities, up to 900 watts RMS of power, an extremely quiet preamp, a “non-pumping”
limiter, complete recording ability, and SWR’s proven reliability and sound quality, and you have
what we feel is the best bass amplifier made anywhere in the world.
Every Professional Series product from SWR Sound Corporation is manufactured and hand-built in
Sun Valley, California, USA.
SM-900 USER GUIDE
SM-900 USER GUIDE • 1