||2,400,000yen（It is 1 set in two sets, around the 2000 time）
Monophonic power amplifier of the mac flag ship
model which realized Oide power of 1200W.
The perfect double balance
circuit is carried from an input to an output.
This circuitry consists of symmetrical amplifier with which two sets of
the properties of taking charge of the signal by the side of a positive
and a negative were arranged. And distortion is canceled by unifying by
mac output auto FOMA. Moreover, the negative feed back is lessened as much
as possible, and oddth higher-harmonic distortion which serves as an unpleasant
sound especially is suppressed.
The output transformer has
realized the outstanding wide band property of 15Hz - 100kHz, and supports the
load intensity (2ohm, 4ohm, and 8ohm). Moreover, a speaker can be protected from
damage by the defect of an output transistor etc., and also the peak current
exceeding 200A can also be supplied.
In order to correspond also to a
low-impedance speaker, the output current accumulating function is carried.
In a tone burst, the output of 5,000W is possible.
power meter of mac tradition is carried in the power meter.
This meter is
displayed with the value which multiplied the Output voltage by the electric
current, and shows the output power actually outputted. Moreover, the meter main
unit is stored by glass housing and OFF of an illumination is also possible.
In the WATTS position in meter mode, a transition of the sound volume of the
special-NetWare-program source is shown, and the greatest power indication is
carried out by a HOLD position.
Six kinds of protection networks are
carried, and amplifier and a speaker are protected also when it falls into
The power guarding consists of wave comparators
which monitor the input of amplifier, and the wave of an output signal, if 0.3%
of height harmonic distortion is exceeded, will stop the gain of amplifier and
will suppress an output to a low distortion.
By the sentry monitor, it has
prevented a very low impedance's starting an output by sudden short-circuit
etc., and a destructive electric current flowing.
In a temperature
protection, if a temperature sensor detects, the mute of the input is carried
out and amplifier gets cold in the hot case when amplifier is unusual, it will
be automatically set to ON.
In the latency turn-off, when the power source
of MC1201 is set to ON, delaying an operation of amplifier for about 2 seconds
has protected the noise leading to the unpleasant noise from other equipments.
When DC protection network at the time of an amplifier malfunction is also
carried and DC mixes with an output, auto FOMA cuts it and protects a speaker
The in rushes protection network of a power line is carried, and
the in rushes electric current at the time of a power on is eased with the
thermistor in a primary power transformer circuitry.
transistor of safe operating range is sorted out and adopted by the low capacity
where electric-current gain was stabilized over the whole operating current
The voltage factor has adopted the very low high precision metal
film resistor and the low dielectric absorption film capacitor as the passive
element in a signal path.
The input terminal carries the XLR connector
of a balance input, and the RCA connector of an imbalanced input.
Moreover, an output-terminal adopts the large-sized 5 way binding post of gilding which
enables the distorted interconnection which is not with a long life, and also
supports the banana plug.
If the control center of a mac is turned ON,
MC1201 carries the remote power control apparatus set to ON.
||Monophonic power amplifier
|Output power (sinusoidal consecutive output)
||1,200W (2ohm, 4ohm, 8ohm)
||2ohm, 4ohm, 8ohm
|Output frequency band
||20Hz - 20kHz
|THD (20Hz - 20kHz)
||0.005% or less (at the time of 250mW -
|Cross modulation distortion (20Hz - 20kHz)
||0.005% or less (less than twice of an Output
|Frequency band (at the time of 1W output)
||20Hz-20kHz+0 -0.25 dB
|SN ratio (IHF-A)
||115dB (at the time of an Output power)
|IHF dynamic head room
||100 or more
||It is less than THD2% to over-drive 14dB at 1kHz.
||AC100V, 50Hz/60 Hz, 1,500W (Underwriters
|The maximum Dimensions
||Width 460x height 280x depth of 543mm