
Marantz Model 1152 |
99,800yen(around the 1977 time) |
DC stream-composition Integrated Amplifier of the
Low TIM design which outputted low a little by excluding a peek indicator from
Model 1180.
The low-noise transistor selected carefully specially is used for an equalizer
amplifier, and it has become it with 3 steps of 5Tr stream-compositions
first rank differentials hardwired-connection differential circuitry of
difference input amplifier, buffer amplifier, and first class amplifier
with a constant current load intensity.
Here, a numeric value as high as 40dB of a closed loop gain is a thing
since model 7, and if it is high MC cartridge of an output partly, it is
also possible to use it direct.
It has
the try tone control original with a Marantz possible to a control of a Mid
range.
It is the linear slide system control which makes a graphic equalizer
consider, and is effective in a correction of a special NetWare program, or a
treatment of a room acoustic.
Bass and Treble change ±10dB and Mid changes
the frequency characteristic in a span of ±6dB.
Furthermore, Bass and
Turnover to which the performance characteristic of Treble can be moved are also
equipped.
The loudness contour that the optimal Fletcher-Munson curve in each stage at the time of a small sound volume can be set up by a succession variable is carried.
Fine adjustment and the setting of low-pass and the amount of corrections
of a high region can be carried out independently, and, moreover, a master
volume can cut an it1 to ten steps.
Since a circuitry is
completely separated with the tick mark 0, the frequency characteristic becomes
flat.
It excels in the power linearity of the overall by pure
complimentary OCL and a parallel push-pull circuit.
Moreover, the
outstanding phase response and transmission capability which are crossed to a
wide band with DC stream composition have been acquired.
The ESP
protection network is carried, an excessive input is restricted to a safe value, and the protection which does not spoil musicality is performed.
The
bessel type filter which was excellent in the roll-off characteristics is
adopted, 9kHz and the roll-off curve in which 18 dB/oct is steep at 15Hz are
realized, and phase distortion is reduced.
The tone circuitry was jumped
and the tone defeat which sets the frequency characteristic as a flat is
equipped.
The DC/AC amplifier circuit changing switch is carried.
Wooden cabinets are options.
|
Form |
Stereo Integrated Amplifier
|
Output power
(20Hz - 20kHz, both channel drive) |
80W+80W (8ohms)
100W+100W (4ohms)
|
Frequency characteristic (20Hz - 20kHz)
|
+ 0, -0.2dB |
THD |
0.03% |
Cross modulation distortion |
0.03% |
Dumping factor |
60 |
Input sensitivity/impedance |
Main-amplifier input: 1.5V/30kohm
Phone man-month: 1.8mV/47kohm
Mic: 1.8mV/47kohm
High:
180mV/25kohm |
An Output power/impedance |
Pre Out: 1.5V/200 ohm |
RIAA deflection (20Hz - 20kHz) |
±0.2dB |
Input equivalent noise |
0.32 microvolt (a phone and IHF-A)
|
Dynamic range (phone) |
119dB |
Tone control property |
bass(100Hz): ±10dB
mid(700Hz): ±6dB
treble(10kHz): ±10dB |
Filter |
Low: 15Hz, 18dB / oct
High: 9kHz, 18dB /
oct |
Power consumption |
190W (Electrical Appliance and Material
Control Law) |
Power source |
100V, 50Hz/60Hz |
Dimensions |
Width 416x height 146x depth of 316mm
|
Weight |
14kg |
Option |
Standard walnut cabinet WC-110 (7,000yen)
Standard mahogany cabinet WC-110N (12,000yen) |
|
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