The
Marantz Model 15 Solid State Stereo Power Amplifier is an instrument without
precedend in performance and rugged reliability. As renowned audio authority
Julian Hirsch exclaimed, "if any amplifier can be termed
''indestructible''. This is the one." two independant and identical
monophonic amplifiers, each with its own power supply, are bracked together and
mounted to a handsome gold anodized front panel that matches both the Model 7T
preamplifier and Model 10B tuner. Because the channels are completely isolated,
you suffer no power loss, "cross-talk', or other interactions that
oftentimes occur from simultaneous operation of both channels with only one
power supply. The amplifiers are direct-coupled, providing instantaneous
recovery from overload and full rated power throughout the full frequency
range. At any audio frequency, and on any output impedance from 4 to 16 ohms,
the Model 15 is lower than on any other currently available power amplifier.
You can use the Model 15 with any loudspeaker on the market, from a 4 Ω acoustic suspension system to the 16 Ω electrostatic. And, a built-in fool-proof protection circuit gives
instantaneous and unobtrusive protection without causing annoying program
interruptions.
All of these features combine to bring you
completely reliable operation - year in and year out. The performance of the
marantz Model 15 establishes wholly new standards of technical excellence for
amplifiers of all types.
Safety
Circuit - A new, current-limiting circuit developed by Marantz protects both
output and driver transistors from output short circuits, open circuits,
capacitive loads or any type of complex reactive loudspeaker loading.
Accidental open - or short-circuiting, even with full-power, 20,000 Hz output
is completely safe. Short circuits during operation activate a visual
indicator. This unique safety circuit gives instantaneous and unobtrusive
protection without causing annoying program interruptions.
Overload
Recovery - Instantanous. Clean performance at high peak-clipping levels.
Time Delay
Circuit - Loudspeakers are protected agains damage from turn-on
"pops" and surges.
Separate
Power Supplies - Channels are completely isolated. No power loss or other
interactions from simultaneous operation of both channels.
Crossover
Notch - These sharp switching discontinuities have been virtually eliminated in
the Maantz Circuit, even at 20,000 Hz. This results in noticeably cleaner
performance, especially apparent at normal listening levels.
Front Panel
- Matches those of Marantz Model 7T Solid-State Stereo preamplifier Console and
Model 10B Stereo FM Tuner in both size and type of finish.
Cabinet or
rack mouting available at extra cost
Electronic
Time Delay Circuit - This mutes the
signalto the loudspeaker for about five seconds after the unit is turned on,
thus elminating the irksome popping noise normally produced at that time by
high power supply transistorized units.
Specifications
Power Output
Each Channel (Will operate continually at full rated power from 20 to 20,000 Hz
with complete safety):
70 Watts at
4 ohms
60 watts at
8 ohms
40 watts at
16 ohms
Frequency
Response: 10 to 60,000 Hz (within 1
dB)
Damping
Factor: Greater than 30 with 8 Ω load.
Total
Harmonic Distortion: less than 0,1% at
and below rated power, 20 to 20,000 Hz
Typical
Harmonic Distortion: 0,03% with 8 Ω or higher load - at full rated output,any
frequency from 20 to20,000 Hz. Distortion decreases as output level is lowered.
Total
Noise: better than 90 dB below 60 watts
into 8 Ω
Optional
Accessories: Oiled walnut cabinet and rack Mount panel
Power
Requirenets: 105 - 130 V AC, for 50-60
Hz. Easily covertible form 110 volt to 220 volt operations.
Dimensions
(W x H x D): 376 x 150 x 216 mm
(14,8" x 5,9" x 8,5")
Weight: 13,6 kg (29,9 lb )