REL Acoustics Studio III User Manual

Studio iii

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System Type
ARM loaded cabinet with


semi-tone variable

bass filter. 110 litre

Lower Frequency Response
In room -6dB: 9Hz

Amplifier Input Impedance
High level: 100K ohm
Low level: 10K ohm

Gain Control Range

Drive Unit Impedance
8 ohm

Mains Input Voltage
115 V 50/60 Hz or
230 V 50/60 Hz,
subject to country of sale

Dimensions Wx Hx D
685 x 617 x 567 mm
26.99 x 24.31 x 22.34 in.
including feet and rear
panel controls

205.03 lbs.

Black Oak, Cherry, Light
Oak, Rosenut, Walnut
subject to country of sale

Studio III

Reference class sub-bass system designed for use with very high
quality stereo and multi-channel audio systems in larger rooms.

• True 500W (continuous) discrete, direct-coupled MOSFET amplifier

• 2x downward-firing long-throw 250mm (10”) very heavy duty

“Volt” drivers , die-cast chassis

• Refined ABC


variable crossover adjustment in 24 musically

correct semi-tone increments between 22Hz-106Hz.

• Acoustic Resistive Matrix (ARM) loading for smoother bass response

• Four position mode selector: line/LFE (0 degrees phase and

180 degrees phase)

• Totally discrete input circuitry for high and low level inputs

• 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)

• Separate volume controls for high and low-level adjustment

• Simultaneous connection of high and low level sources

• Set-Safe


audibly transparent driver protection

• Balanced-bridge power supply

• Audiophile grade toroidal transformer

• 8x ultra-rugged output devices

• Double thickness, double-sided glass-fibre board with

plated-through holes

• IEC power input socket - no captive leads for installation flexibility

• Hand-built in Great Britain

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