The gorgeous new Reference 200 active
sub bass system comes loaded with the latest in subwoofer technology
and control. In today?s ever-growing electronic climate, we
all crave for an easier life, control at our fingertips, ease of
use and the highest quality performance per pound possible is the
desire of everyone and can now be found in the Reference 200.
Fully functional remote control via a remote eye for complete out-of-sight
control, enables you to setup the Reference 200 whilst remaining
in that all important sweet listening spot. User presets allows
you to recall settings at the touch of a single button, couple this
with 200 watts of power, dual digital displays, twin independent
crossovers, one for music and one for movies and beautifully hand-crafted
cabinets, you have everything you?ve ever wanted in a subwoofer.
Fine Tuned for Performance
This is just the subwoofer you?ve
been waiting for. Imagine the power of a locomotive cleverly engineered
and hand-crafted into a super-mini!! Imagine the advantage of having
the latest digital technology under the hood with easy to use analogue
feel controls at the dash!! Imagine the flexibility and improvement
to your sound system by having two subwoofers built into one beautiful
cabinet!! Imagine no more, the reality is, the Reference 200 twin
crossover, multi function subwoofer. Today?s music & movies
demand slam, depth and punch from your sound system, so the requirement
for an audibly accurate active subwoofer becomes increasingly more
important than ever before.
The Reference 200 gives you all that and more. With 200 watts onboard
even the most demanding tracks are handled with utter ease and precise
accuracy. The Reference 200 will ensure you never miss another bass
note. Setup is made simple with our 2nd generation D.A.M.P technology,
giving you confirmation of your multiple settings via the large
digital display.
Twin independent crossovers give you total control and flexibility
literally at your fingertips using the supplied remote control to
help setting up both a 2 channel musical setup and a movie surround
setting. You now have two subs in one compact, powerful, hand-crafted
cabinet that won?t dominate your living space. When a subwoofer
sounds and looks this good, there?s no other option. MJ Acoustics,
the best of British sub bass.
Driving pleasure
Using a die-cast solid aluminium chassis
of monstrous proportions creates the rigidity that is so important
in sub-bass speaker requirements. Any distortion of the chassis
under extreme load will detract from the goal of pure sound wave
formation. As we all know the creation of sound waves comes directly
from the movement of the cone surface through the air. The longer
the movement of the cone, termed as its excursion, the more air
it moves and up goes the sound pressure level.
We like to think of our 10? driver as the best of all worlds.
It has agility, rigidity and decelerative damping to enable the
cone to move with lightning speed back and forth through the air.
Incorporating an optimised linear motor with progressive suspension
to avoid bottoming and allow maximum linear excursion. The result
is extremely low total harmonic distortion (THD). The voice coil
is bonded to the cone to form a one piece structure. The result
is a piston like action adding to the accuracy of the wave formation.
Better heat dissipation and further reduced THD is achieved as a
result of the rigid one piece cone structure together with vented
coil exposure. The massive rubber cone surround together with the
semi-rigid lower damping apron serve to bring the cone to an almost
instantaneous return to its resting place between transients. Truly,
the muscle behind the Reference 200.
Features & Controls explained.
Hi This function
parameter setting allows adjustment of the gain from the inputs
received via, either the Neutrik Speakon or RCA line level connectors.
This parameter enables adjustment of gain and thus sound pressure
output produced in relation to the input from sources connected
to these inputs. The adjustment range is from ?99 to 0 incremented
in single digit steps. This highly accurate gain adjustment enables
precise matching of gains when using a multiple subwoofer set-up.
Hro This function
parameter setting allows adjustment of the roll off (crossover)
from the inputs received via, either the Neutrik Speakon or RCA
line level connectors. This parameter enables high frequencies to
be filtered out above the displayed setting with a 24dB slope from
sources connected to these inputs. The adjustment range is from
20hz to 120hz incremented in single digit steps. This highly accurate
roll off adjustment enables precise matching of crossovers when
using a multiple subwoofer set-up.
Lo This function parameter setting allows adjustment
of the gain from the LFE input received via the RCA line level connector.
This parameter enables adjustment of gain and thus sound pressure
output produced in relation to the input from the LFE output of
your AV amplifier. The adjustment range is from ?99 to 0 incremented
in single digit steps. This highly accurate gain adjustment enables
precise matching of gains when using a multiple subwoofer set-up.
Lro This function
parameter setting allows adjustment of the roll off (crossover)
from the LFE input received via the RCA line level connector. This
parameter enables high frequencies to be filtered out above the
displayed setting with a 24dB slope from sources connected to this
input. Most but not all AV decoders offer an adjustable pre filtered
out put for the LFE content. Offering this fully adjustable setting
for the LFE crossover gives a more flexible use for this input and
enables the user to make adjustments over a wider frequency band
and result in better integration possibilities. Selecting above
120hz results in the ?LFE bypass? circuit option. The
LFE bypass circuit diverts all frequencies past the internal crossover
and only gain is adjustable. The adjustment range is from 20hz to
120hz & bypass, incremented in single digit steps. This highly
accurate roll off adjustment enables precise matching of crossovers
when using a multiple subwoofer set-up.
Pha With the ?Reference 200?s?
sophisticated microprocessor controlled and monitored crossover
circuit (D.A.M.P.) comes an adjustable phase control. Setting the
phase in musically accurate infinitely variable increments between
0? and 180?. This control is used to enable accurate and
musical integration when placed in a system. By adjusting this control
almost infinite placement combinations can become possible. Most
people will not experience phasing. The effects of which are only
apparent to the ear if your main speakers produce the same frequency
note at the same volume level as the subwoofer. For example, if
your main speakers produce a note of 40hz at an equivalent volume
level to the subwoofer, also producing 40hz, and the phase of each
is out by 180? then they cancel each other out resulting in
a reduction of bass at this frequency. To remedy this you adjust
the phase control on the subwoofer to bring them both into phase.
As a rule of thumb downward-firing subwoofers have a natural 90?
out of phase angle when compared to forward firing main speakers
and forward firing subwoofers do not, when the phase control is
set to 0?.
Bri This function
parameter setting allows adjustment of the display brightness. The
settings are 1 to 5, with 5 being the brightest.
Apo This function
parameter setting allows adjustment of the auto power off time delay.
The settings are 10mins to 60mins and off, incremented in steps
of 10. When auto power off is activated the DATA control must be
pressed to bring back on-line manually. This occurs automatically
when audio frequencies become present again from the input source.
Adr This function
parameter setting allows MIDI address to be specified. The settings
are 1 to 16, incremented in single digit steps.
Etr This function
parameter setting allows external trigger input polarity to be altered.
The settings are -_- to _-_. The ?Reference 200? can
be put to sleep and woken via this voltage monitoring circuit.
Memories
4 user presets can be stored. Holding the button down for a few
seconds stores the settings for that preset (store is displayed
momentarily). The individual settings can be recalled by a single
press of the corresponding control button. The last selected setting
is kept in non-volatile memory. Even if the power is disconnected
all setting remain as those last used.
Lo Input
You can connect an unbalanced RCA input direct from a mixing desk
or line level pre-amplifier with or without a sub output. Either
mono or stereo input detail may be used. When connecting from an
A/V amplifier using the subwoofer or LFE out, the RCA lead used
should be connected to the LFE IN on the Reference 200. The LFE
OUT connector enables you to daisy chain additional subwoofers for
larger rooms.
High Input
For connection directly in parallel from the speaker outputs of
the main audio system in order for the filter circuit to extract
the information required to output the required bass frequencies.
The maximum amplifier that can be connected is 500w measured in
PEC standard and only when connected in parallel with speakers designed
to handle this power. Do not connect direct to an amplifier unless
in parallel with a speaker. Damage may well occur if you do, to
the input circuit of the filter stage.
12v Trigger
This jack connection is used to remotely shut down and switch on
the control board circuits and amplifier stages. Please note that
this only functions if the power switch is in the on position. Connect
the lead (optional) from the device controlling the system on/off
function to this socket. The unit will wake from a standby state
upon a trigger of voltage. The menu item ?Etr? can be
used to set whether the unit should waken or go to standby when
monitoring either a positive trigger signal voltage or a negative
trigger signal voltage. Refer to your system controller instruction
manual to determine the setting that should be applied in the menu.
Remote Eye & RM1
This remote socket is used to connect the M J Acoustics infrared
eye, supplied with a 2 metre cable. This unique feature provides
for out of sight remote control of all functions, but is primarily
beneficial for the selecting of user pre-set stored data, which
can be selected for different program sources via the supplied RM1
remote control unit. The remote eye sensor housing can be located
in line of sight with the subwoofer rear panel out of sight. This
feature makes the Reference 200 easy to position with full functionality
and at the same time not compromising room aesthetics.
D.A.M.P. (Digitally
Accurate MicroProcessor)
Digitally Accurate Microprocessor controlled crossover circuit (D.A.M.P.).
The ?Reference 200? has the ultimate in sophisticated
crossover circuits. A Digitally Accurate Microprocessor controlled
crossover circuit (D.A.M.P.), incorporates a digital display so
that the upper response limit can be set in musically accurate variable
increments between 20hz and 120hz. A "straight-through"
LFE bypass facility is activated at one end of the controls selectable
parameter which allows the input signal to bypass the filter circuit.
All functions are controlled and monitored via microprocessor. This
development has enabled the complete and highly accurate settings
to become part of user pre-set memories which will enable the user
to store desired settings for different music sources and or music
genre?s. The control of all these functions can be made even
more flexible by the use of a remote control device. A remotely
located receiver eye is connected to the rear panel remote jack
and any programmable remote can communicate and adjust the required
settings. Once set-up is complete the cabinet can be turned around
to hide the display and connections, leaving the remote eye to enable
the recalling of user-stored pre-sets.
D.I.P.
(Dynamic Intelligent Protection)
This circuit monitors the output and the input of the amplifier
and ensures that no clipping occurs. Additionally the microprocessor
monitors all thermal activity and ensures that the amplifier output
stages remain within safe working area specifications. This is a
complex and highly integrated circuit which continually monitors
specific areas and makes the appropriate action should the need
arise.
Standby (auto power
off)
This circuit monitors the inputs and wakens the circuits from standby
when a signal is present. Depending on the stored setting for the
APO menu item the circuits will fall back into standby mode when
no signal is present for the set time. Settings are: Off - 10 -
20 - 30 - 40 - 50 - 60 mins approx. Standby and wake can also be
activated by external trigger from other equipment.
Midi
Once Midi address has been selected, control of some functions can
be made via direct control from an outboard midi controller such
as a PC/Mac software program or any device with Midi controller
interface.
Output Meter
On the main display window there is a series of led?s which
light up as power output is increased. This is intended and a guide
only and provides and indication of how hard the system is working
Specification
200watt MOSFET Amplifier * Speaker and Line Level inputs with Gain
Control Range 99dB * Neutrik Speakon connector (High level 100k
ohm) * Unbalanced RCA (phono) connectors (Gold Plated) (Low level
10k ohm) * Twin Sophisticated crossover circuits - 1Hz increments
between 20Hz and 120Hz * "LFE Bypass setting * Phase Control
infinitely adjustable between 0? and 180? * 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 cast
Alloy chassis & Double Magnets * UK 3 year manufacturers return
to base warranty * Dimensions (WxHxD ) 300mm X 300mm X 355mm * Weight
- 20.85kg (46.3 lbs).