MJ Acoustics Reference 100 Active Sub Bass System

Its a Pro 50 on steroids!!
The Reference 100 has the same diminutive dimensions as the award winning Pro 50, but includes a few extra muscular implants. A larger transformer for a kick off, an uprated 200mm driver, a powerful 120 watt amplifier and if that's not all, it has the same digital display D.A.M.P technology as its bigger brothers the Reference 150 and Reference I, to make setting up kids play, all for a fraction above the excellent low price of the Pro 50.

Huge sound, deep, fast, musical, compact, yet powerful, just some of the words you'll utter once you've heard the Reference 100. A 120 watt amplifier (why didn't we call it the "Reference 120") powering a 200mm long throw driver, makes the Reference 100 a truly awesome performer for its size. Its beautiful cabinet finish and muscular composure, further add to its aesthetic appeal.

Crossover
The "Reference 100" has the ultimate in sophisticated crossover circuits. A Digitally Accurate MicroProcessor controlled crossover circuit (DAMP), incorporates a digital display so that the upper response limit can be set in musically accurate variable increments between 30hz and 120hz. A "straight-through" LFE bypass facility is activated at one end of the controls travel which allows the input signal to bypass the filter circuit. The LFE bypass is used where an already filtered signal is offered to the low level input sockets. An example of this would be a sub output from a dedicated control pre-amplifier such as found in a Home Cinema system.

Controls
There are separate gain controls for high and low level inputs, a "straight-through" LFE bypass and an audibly transparent, "Automatic Speaker Protection" (A.S.P.) circuit which monitors the output stages for clipping and limits the cone movement if the amplifier is being over-driven. A professional Neutrik Speakon connector is standard for the "Reference 100's" stereo high level input. Gold-plated pins inside and an approved touch proof design to cater for potentially high voltages that can be connected to it complete the high level input socketry. Additionally, gold plated RCA connectors are offered to cater for low level input. There is a relay in the signal output of the amplifier which waits for 2-3 seconds before it connects the loudspeaker. This allows the power supply to settle and prevents a loud thump that would occur without it. When switched off, the relay instantly disconnects the loudspeaker and allows the power supply and output transistors to discharge without noise. The amplifier panel is constructed from high grade 4mm thick aluminium sheet and has a 0.46ºC/W Heat-sink rating. Additionally the Bi-Polar transistors are bolted to this plate to further reduce the required heat build-up as output rises. This combination enables the amplifier, even under continuous high loads to run amazingly cool during operation. As an added security measure a 90ºC thermal trip is added to the platform to prevent heat stress to components when over driven.

Reference 100 in Black Satin finish

D.A.M.P.
"Digitally Accurate MicroProcessor" controlled crossover circuit (DAMP).
The "Reference 100" has the ultimate in sophisticated crossover circuits. A Digitally Accurate Microprocessor controlled crossover circuit (DAMP), incorporates a digital display so that the upper response limit can be set in musically accurate variable increments between 30hz and 120hz. A "straight-through" LFE bypass facility is activated at one end of the controls travel which allows the input signal to bypass the filter circuit.

A.S.P.
A.S.P. (Automatic Speaker Protection).
This circuit monitors the output and the input of the amplifier. As the output reaches close to the limit of the power supply rails the input is instantly reduced to prevent the amplifier from clipping. The dynamic range of the amplifier is not compromised as the circuit has been set to activate at a point beyond the full dynamic range before protection is activated.

Specifications.
120watt DC-coupled Bi-Polar Amplifier
Speaker and line level inputs with Gain Control Range 80dB
Neutrik Speakon connector (Gold Plated) (High level 100k ohm)
Unbalanced RCA (phono)(Gold Plated) (Low level 10k ohm)
Sophisticated crossover circuit - variable increments between 30Hz and 120Hz
Straight-through LFE Bypass filter switch * Phase Control infinitely adjustable between 0º and 180º
Frequency response 13hz to 120hz * A.S.P. (Automatic Speaker Protection) *
D.A.M.P. (Digitally Accurate MicroProcessor)
Specially designed cabinet structure, volume, and configuration made from inert 18 & 30mm MDF
Digital Display with power output meter and frequency setting * Switched fused IEC mains input socket
200mm (8”) Ultra Long-throw Driver with heavy duty pressed chassis & magnet
3 year manufacturers return to base warranty * Dimensions (WxHxD ) 278mm X 332mm X 278mm
Weight 10.5kg (23.1 lbs)
Black Satin and Silver finish as standard with Real Wood Veneer finish an option at extra cost.

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Specifications subject to change without notice. All rights reserved. E &O E.