MJ Acoustics Reference 150, Reference 150 MkII User Manual

Page 16

Name:……………………………………………………………………………..……

Address:………………………………………………………………………………..

………………………………………………………………………………………….

………………………………………………………………………………………….

Store where purchased: ………………………………………………………………..

Model REFERENCE 150MkII

Date of purchase:…………………………….Serial number:…………………………

MJ ACOUSTICS warrants to the original purchaser only, that this product is free from defects in material and
workmanship under normal use within three years from date of purchase, in the United Kingdom only, provided that
registration is submitted to M J Acoustics within 28 da ys from date of purchase. All parts, except the external cabinet
finish are warranted as stated from date of purchase. Under this warranty M J Acoustics agrees to repair any defect or at
the company’s discretion, replace the faulty component(s) without charge for parts and labour provided the unit is returned
carriage paid both ways. Defective parts will be replaced if in the sole judgement of MJ ACOUSTICS they be deemed
defective over and above that considered to be normal wear and tear.

This warranty does not apply to equipment showing abuse, misuse, neglect or damag e or t o parts that in th e judgement of
MJ ACOUSTICS are not defective or have been used for purposes outside the scope of its design , nor does it extend to
any equipment which may have been tampered with, altered or repaired outside an authorised MJ ACOUSTICS service
station, and on which the serial number has been defaced, modified or removed. This warranty is in lieu of any other
warranty expressed or implied and there is no other warranty or warranties valid for your purchase. No one is authorised
to assume any liability on behalf of MJ ACOUSTICS or impose any obligation on it in connection with the sale of any
equipment other than as stated in this warranty and outlined above.

MJ ACOUSTICS’ liability, for any defective product, is limited to repair or replacement of the product, at our sole option.
MJ ACOUSTICS shall not be liable or responsible, under any circumstances, for such indirect or consequential damages
as from interrupted operations or other causes howsoever related. Additionally the Reference 150 is not intended for use
in a commercial environment and the warranty applies for domestic use only.

If your unit requires service it should be sent to MJ ACOUSTICS service department , any shipping charges are the
responsibility of the owner, this includ es return shipping charges. SERVICE DEPARTMENT:- MJ Acoustics, Service
Department, 9 Venture Court, Boleness Road, WISBECH, Cambridgeshire. PE13 2XQ

WARRANTY

Reference 150 User’s Manual





Please print clearly

14/12/2005 (Ref – 150)

Page 1

User’s Manual

Model

Reference 150MkII

Table of Contents
Safety Instructions ………………….. page 2
Precautions ………………….. page 3
Introduction ………………….. page 3 - 4
Display Menu ..…...…..……….. page 5 - 6
Memories ………………….. page 6
Connectivity ………………….. page 7 - 8
High Level Lead …………………… page 9
Panel Layout & Features …………….. page 10 - 12
Remote & Remote Eye ….………..….. page 12
Set-up Hints & Tips ………………….. page 13
Specifications & Contents ….…..…… page 14
Warranty ………………….. page 16

Natural Bass Impact Unparalleled in the Entertainment Environment

14/12/2005 (Ref – 150)

Professional Reference Sub-Woofer

For Home Cinema,

Audiophile Specialists & Studios

Page 2

"WARNING"

“TO REDUCE THE RISK OF FIRE OR ELECTRIC

SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN

OR MOISTURE.”

SAFETY INSTRUCTIONS

1. Read Instructions - All the safety and operating instructions
should be read before the appliance is operated.

2. Retain Instructions - The safety and operating instructions

should be retained for future reference.

3. Heed Warnings - All warnings on the appliance and in the

operating instructions should be adhered to.

4. Follow Instructions - All operating and use instructions

should be followed.

5. Water and Moisture - The appliance should not be used

near water - for example, near a wet basement, or near a
swimming pool, and the like.

6. Carts and Stands - The appliance should be used only with

a flight case or stand that is recommended by the
manufacturer.

7. Wall or Ceiling Mounting - The appliance should be

mounted to a wall or ceiling only as recommended by the
manufacturer.

8. Ventilation - The appliance should be situated so that its

location or position does not interfere with its proper
ventilation. For example, the appliance should not be
situated such that may block ventilation openings: or,
placed in a built-in installation, such as a bookcase or
cabinet that may impede the flow of air over the amplifier
panel and or heatsink finns.

CAUTION:

TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE
OF PLUG TO WIDE SLOT. FULLY INSERT.

ATTENTION:

POUR EVITER LES CHOCS ELECTRIQUES,
INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE
DANS LA BORNE CORRESPONDANTE DE LA PRISE ET
POUSSER JUSQU AU FOND.

9. Heat - The appliance should be situated away from heat
sources such as radiators, heat output devices, or other
appliances that produce heat.

10. Power Sources - The appliance should be connected to a
power supply only of the type described in the operating
instructions or as marked on the appliance.

11. Grounding or polarization - Precautions should be taken
so that the grounding or polarization means of an
appliance is not defeated.

12. Power Cord Protection - Power supply cords should be
routed so that they are not likely to be walked on or
pinched by items placed upon or against them, paying
particular attention to cords and plugs, convenience
receptacles, and the point where they exit from the
appliance.

13. Cleaning - The appliance should be cleaned only as
recommended by the manufacturer.

14. Nonuse Periods - The power cord of the appliance should
be unplugged from the outlet when left unused for a long
period of time.

15. Object and Liquid Entry - Care should be taken so that
objects do not fall and liquids are not spilled onto the
enclosure paying particular attention to the amplifier
panel.

16. Damage Requiring Service - The appliance should be
serviced by qualified service personnel when:

A. The power supply cord or the plug has been damaged;

or

B. Objects have fallen, or liquid has been spilled onto the

appliance;

or
C. The appliance has been exposed to rain;
or
D. The appliance does not appear to operate normally or

exhibits a marked change in performance;
or
E. The appliance has been dropped, or the enclosure

damaged.

17. Servicing - The user should not attempt to service the
appliance. All servicing should be referred to qualified
service personnel.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

Caution: To Reduce Risk of Electric Shock,

Do Not Remove Amplifier.

No User Serviceable Parts Inside.

Refer Servicing to Qualified Personnel.

The lightning flash with arrowhead symbo l within an
equilateral triangle is intended to alert the user to the presence
of uninsulated “dangerous voltage” within the product’s
enclosure that may be of sufficient magnitude to constitute a
risk of electric shock to persons.

The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (s ervicing) instructions in the
literature accompanying the appliance.

Reference 150 MkII User’s Manual

14/12/2005 (Ref – 150)

Page 15

Reference 150 User’s Manual

MJ ACOUSTICS warrants to the original purchaser only, that this product is free from defects in material and
workmanship under normal use within three years from date of purchase, in the United Kingdom only, provided that
registration is submitted to M J Acoustics within 28 d ays from date of purchase. All parts , except the external cabinet
finish are warranted as stated from date of purchase. Under this warranty M J Acoustics agrees to repair any defect or at
the company’s discretion, replace the faulty component(s) without charge for parts and labour provided the unit is
returned carriage paid both ways. Defective parts will be replaced if in the sole judgement of MJ ACOUSTICS they be
deemed defective over and above that considered to be normal wear and tear.

This warranty does not apply to equipment showing abuse, misuse, neglect or damage or to parts that in the judgement of
MJ ACOUSTICS are not defective or have been used for purposes outside the scope of its design , nor does it extend to
any equipment which may have been tampered with, altered or repaired outside an authorised MJ ACOUSTICS service
station, and on which the serial number has been defaced, modified or removed. This warranty is in lieu of any other
warranty expressed or implied and there is no other warranty or warranties valid for your purchase. No one is authorised
to assume any liability on behalf of MJ ACOUSTICS or impose an y obligation on i t in connection with th e sale of any
equipment other than as stated in this warranty and outlined above.

MJ ACOUSTICS’ liability, for any defective product, is limited to repair or replacement of th e product, at our sole
option. MJ ACOUSTICS shall not be liable or responsible, under any circumstances , for such indirect or consequential
damages as from interrupted operations or other causes howsoever related. Additionally the Reference 150 is not
intended for use in a commercial environment and the warranty applies for domestic use only.

If your unit requires service it should be sent to MJ ACOUSTICS service department, any shipping charges are the
responsibility of the owner, this includes return s hipping charges. SERVICE DEPARTMENT:- MJ Acoustics, Service
Department, 9 Venture Court, Boleness Road, WISBECH, Cambridgeshire. PE13 2XQ





14/12/2005 (Ref – 150)

Page 14

SPECIFICATIONS

150watt MOSFET Amplifier * Speaker and Line Level inputs with Gain Control Range 99dB *
Speakon type connector (High level 100k ohm) * Unbalanced RCA (phono) connectors (Gold
Plated) (Low level 10k ohm) * Twin Sophisticated Crossover Circuits - variable increments
between 20Hz and 120Hz * "LFE Bypass setting * Phase Control infinitely adjustable between 0º
and 180º * Frequency response 13hz to 200hz * D.I.P. (Dynamic Intelligent Protection) * D.A.M.P.
(Digitally Accurate MicroProcessor

2nd generation) * Specially designed cabinet structure, volume,

and configuration made from inert 18 & 25mm MDF * Digital Display with power output meter and
frequency setting * Switched fused IEC mains input socket * 250mm (10”) Ultra Long-throw Driver
with Heavy Duty chassis & Double Magnets * UK 3 year manufacturers return to base warranty *
Dimensions (WxHxD ) 300mm X 300mm X 355mm * Weight 18.23kg (40.2 lbs) * Black Ash finish
as standard with other Real Wood Veneer finishes available.

BOX CONTENTS

Reference 150 User’s Manual

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

M8 Spikes (1 packet)

See Warning on

Pack

Vibration feet inserts x 4

(place on base of feet to provide additional

friction on smooth floor surfaces)

IEC mains Lead

RM1 Remote System

RM1 Remote

RM1 Eye

RCA to RCA (5m) x 1

High Level Lead (10m) x 1

AAA Batteries x 2

Batteries shown—for illustration only

Reference 150MkII x 1

14/12/2005 (Ref – 150)

Page 3

Location

Avoid using the “Reference 150” in the following locations:

* Locations of extreme low or high temperatures, or extreme changes in temperature.

* Sources of heat such as near commercial heaters, fires or other sources of heat.

* Unstable locations or where the unit can fall due to vibration.

* Locations with moisture or dust.

* Locations where electrical voltage varies.

Power Supply

* When u npluggin g the AC ad apto r from the o utl et, be sure to gras p th e adapto r. Att empting to un plug it b y pull ing on

the AC cable may damage the wiring or th e mains socket on the amplifier.

* Always power-down amplifier and sw itch off before making any connections.

* It is dangerous to use any power cable that is cut or frayed. If the power cable is damaged, stop using it

immediately, and have it repaired.

* Do not plug in or unplug the AC adaptor with wet hands. Doing so may result in dangerous electric shock.

* Do no t remove the amplifier or tou ch any parts inside. Doing so may result in a dangerous electric shock, and could

damage the delicate electronic circuits. The voltages inside the amplifier are very dangerous.

* Do not let water or other liquids, flammable materials, or metal objects such as pins get inside any of the input

sockets. These things can cause an electrical shock or short circuit the amplifier, and damage it. If the amplifier
should become wet, unplug the AC adaptor from the AC outlet at the wal l first, and contact the manufacturers
directly. There are NO user serviceable parts inside.

Precautions

Thank you very much and congratulations on choosing the MJ Acoustics Reference 150 Active
Sub-Bass System - a compact active lower octave loudspeaker, designed for stereo and multi-

channel use to provide you outstanding performance with the ultimate in control. The use of a
Subwoofer is essential to provide a proper balanced spectrum of sound.

Please take a few moments to read this manual. The advice offered will enable you to get
the very best performance from your

Reference 150 subwoofer.

Your Reference 150 is shipped from the factory with last on state memory. This feature means
that in the event of a power cut the last on state will be activated when power returns. The

Reference 150 features a critically shaped rigid impregnated paper cone bass driver providing

transparent and dynamic bass registers. Using our specially designed enclosure, dedicated
amplifier and twin active crossover filter systems you have purchased the ultimate Active Sub-

Bass System. By adding the

Reference 150 powered sub-bass system to your audio

equipment you will have the benefits of improved transparency and a fully dynamic sound stage.

Introduction

Reference 150 MkII User’s Manual

14/12/2005 (Ref – 150)