For a decent sub get a Rel Storm/Quake sub... Some of them are coffee table sized.
REL Studio III
Reference class sub-bass system designed for use with the very finest stereo and multi-channel audio systems in larger rooms.
SPECIFICATIONS
SYSTEM TYPE: Super ARM® loaded cabinet with ABC® semi-tone variable bass filter. 110 litre.
IN ROOM LOWER FREQUENCY RESPONSE AT -6dB: 9Hz
AMPLIFIER INPUT IMPEDANCE: high level 100K, low level 10K
GAIN CONTROL RANGE: 80dB
DRIVE UNIT IMPEDANCE: 8 Ohm
MAINS INPUT VOLTAGE: 115V 50/60 Hz or 230 V 50/60 Hz, subject to country
DIMENSIONS: WxHxD mm (inches) incl. feet and rear panel control; 685x618x567(26.97x24.33x22.32)
WEIGHT Kg (Ibs): 93 (205.03)
FINISHES: Black Oak, Cherry, Light Oak, Rosenut, Walnut (subject to country of sale)
Click the magnifier to open a large image showing our wood veneer finishes.
Studio III Underside
FEATURES
True 500W (continuous) discrete, direct-coupled MOSFET amplifier
2x downward firing long-throw 250mm (10") very heavy duty "Volt" drivers , die-cast chassis
Ultra-rigid, multi-braced 30mm cabinet
Refined ABC® variable crossover adjustment in 24 musically correct semi-tone increments between 22Hz-96Hz
Super Acoustic Resistive Matrix (ARM®) loading for smoother bass response
Four position mode selector: line/LFE (0 degrees phase and 180 degrees phase)
Audiophile grade toroidal transformer
Gas-tight Neutrik high level connection for long-term consistency of sound quality
High quality, panel-mounted twin phono inputs at 0dB and +12dB (low level)
High and low level balanced inputs (Neutrik/XLR)
Totally discrete input circuitry for high and low level inputs
Separate volume controls for high and low level input adjustment
Simultaneous connection of high and low level sources
Set-Safe® audibly transparent driver protection
8x ultra-rugged output devices
Double thickness, double-sided glass-fibre board with plated-through holes
lEC power input socket - non-captive lead for installation flexibility
Hand-built in Great Britain, three year worldwide warranty
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The scary thing is wioth this is the frequency it goes down too... 9hz. The resonance frequency of your liver is 7hz... have it too loud and you may kill yourself and break your house! /ubbthreads/images/graemlins/grin.gif