Power amplifier developed aiming at Low-TIM-izing.
A main-amplifier part is adopting the source follower amplifier by
Dual-FET which had the perfect DC amplifier stream composition, and also
arranged the pair property with the first rank, and has prevented the property
failure by the impedance variation of an input stage. Moreover, it constitutes
with the differential-amplifier -> emitter-follower buffer amplifier by
Dual-Tr, and three-step darlington circuits which carried out parallel push pull
adoption of newly developed super high fT-Tr are consisted of by the power
This super high fT transistor is an emitter ballast
type power transistor of that time newest which was produced based on Low-TIM
thought and which should also be called crystal of an LSI process technology and
a RF Tr technology.
fT is a thing of the Marantz requests for price
quotations which shows 60MHz, is excellent in a RF property and a switching
characteristic, and has a stable amplification performance of a margin to a
super-high region in spite of big Pc called 200W. Thereby, SM-7 is crossed to a
super-low-pass wide band from a super-high region, and the high-speed
responsibility is improving to particularly.
The large-sized power
transformer which remains unmoved also at the time of the maximum continuous
output in a rated load is carried in a power transformer. The secondary side has
a separate volume structure into which the right-and-left channel was made to
Furthermore, the mass type of 15000 micro Fx4 is used for
a capacitor. The high power of 150W+150W is supplied calmly.
precision meter loading which can carry out the Direct reading of the peek of an
Output voltage in the wattage at the time of decibel and an 8-ohm load
The Koide power time to the time of the Oide power can monitor a
tick mark without the change of a range for logarithmic compression mold.
An ASO detection type protection network is carried. If the output
current and a voltage exceed an area of safe operation, a signal will be
restricted to a safe value in an instant. An output transistor is protected
without spoiling faithful reappearance of a music signal.
||Stereo power amplifier
||5Hz - 100,000Hz
||0.01% or less (20Hz - 20kHz, 8-ohm load
|Cross modulation distortion
||0.01% or less
||: (+0, -0.2dB) 20Hz - 20kHz
||100 (8-ohm load intensity) or more
||0.034mV (IHF-A curve)
||At the time of the maximum output: 850W
Electrical Appliance and Material Control Law: 400W
||Width 416x height 146x depth of 332mm
||Cabinet WC-77(walnut finish):8,000yen
Exclusive rack handle RHA-7:4,000yen(1 set)