||1,200,000yen(around the 2000 time)
The model which carried a double balance circuit and
output auto FOMA, and was announced as the highest peak of mac stereo power
The double balance circuit is carried in the circuitry of a
power amplifier part. One more set of symmetrical networks are further allotted
to the upper and lower sides of the balance circuitry which usually consists of
two symmetrical networks, and it is constituted from this circuitry by a total
of four amplifier. This had equilibrium nature nearly perfect from an input to
an output, and the-less distorted high fidelity amplification is realized as a
matter of fact.
Moreover, the negative feed back was lessened as much as
possible, odd:00 higher-harmonic distortion which serves as an unpleasant sound
especially was suppressed, and low-distortion Oide power has been acquired.
48 output power transistors are used and it is cooling only by the air
cooling without blower by fixing to four large-sized heat sinks.
high-definition part is used sorting out it severely.
The transistor which
has the gain stabilized over the whole electric-current span which should
operate in an active element was used, and the large thing of safe operating
range is adopted as an output transistor by uniform electric-current gain, high
electric-current gain bandwidth, and low-power-output capacitance.
Moreover, the highly precise metal film resistor the passive element excelled
metal film resistor in the temperature coefficient etc., and the low dielectric
absorption film capacitor are used.
The transformer carried in MC602
conforms to a load intensity (2ohm, 4ohm, and 8ohm),A low-distortion transmit
can be performed over the frequency range far exceeding audible range, and the
peak current which exceeds 150A also to a variation of the speaker impedance
which may fall even in 1 ohm or 2 ohms can be supplied.
The mass filter
capacitor which supplies a large-sized power transformer, and
full-wave-rectification bridge diode and a 200J electric current is carried in
the power-source part. Furthermore, each positive/negative of the balance
circuitry is used with the independent source.
If the power guarding is
carried and height harmonic distortion exceeds 0.3%, amplifier gain will be
controlled and distortion of an amplifier output will be suppressed low. This
circuitry operates, only when the power exceeding a design value is required of
By a sentry monitor system, when short-circuit and a very low
load impedance arise, the state of affairs where a destructive electric current
flows is prevented.
If a temperature sensor detects the overheat by ventilation insufficiency,
the load intensity of an over-temp, etc., the mute of the input is carried
out and amplifier gets cold by a temperature protection, it will return
The in rushes protection has removed the stress to
the power transformer by the rush current at the time of a power on.
protection is carried, and if a direct current may leak to an output, an auto
transformer will omit a direct current.
The turn-on delay is carried, at
the time of the power source on, by delaying an operation of amplifier for about
2 seconds, the signal leading to the unpleasant noise from other equipments is
prevented, and a speaker is protected from a corruption.
blue-eyes power meter is carried, a voltage and an electric current are measured
electronically, and the power actually outputted can be displayed.
meter is a WATTS position which three kinds of presentation methods are
possible, and displays from 6mW to 600W/1200W/2400W,If there is peek power
continuously, the HOLD position which locks at the maximum peek and returns to a
quiescing location slowly after that, and the LIGHTS OFF position which switches
off the back light and has the same functionality as a WATTS position are
The gilding treatment is performed to each termination and the
robustness is improved.
The remote power control which can carry out
power-source on/off from the control amplifier of a mac is carried.
Moreover, an overload, like the circuit breaker operates or a fuse flies is
||Stereo power amplifier
||600W+600W (2ohm, 4ohm, an 8-ohm load
intensity, 20Hz - 20kHz, sine wave)
|Output voltage (RMS)
||20Hz - 20kHz
|Output load impedance
||stereo: 2 ohms, 4ohm, 8ohm
||20Hz-20kHz+0 -0.25 dB
|SN ratio (A load)
||Unbalance: 93dB (below an Output power
Balance: 97dB (below an Output power 124dB)
|Height harmonic distortion
||0.005% or less (250mW - Output power)
|Cross modulation distortion (SMPTE)
||A maximum of 0.005% (instant peek power
output <= Output-power x2)
|Wideband dumping factor
||100 (8-ohm output)
||Prevention from clipping
(less than over-drive 14dB, 1kHz)
||AC100V, 50Hz/60 Hz, 12A (Underwriters
||Width 445x height 310x depth of 537mm