Three head
deck with metal tape and soft touch mechanism. Two speed, Microprocessor
functions.
This
compudeck is equipped with a microprocessor to allow you to program the machine
in three basic ways. The unit is programmed with a calculator type keyboard
where operations are keyed in a logical sequence.
Counter
function
The
microprocessor allows you to play any selected portion of the tape between two
counter positions. You can repeat that portion or move on to another one by
simply pushing the skip function.
Timer
function
The
microprocessor with its accurate incorporated clock allows you to program your
deck for playback or recording at any time of the day, even when you are
absent.
Programmable
replay function
The
microprocessor allows you to program your deck to search for songs in any order
you wish (sequential or non sequential up to 19 songs) and to repeat them as
many times as you like.
Two speed
operation: audio engineers demonstrated long ago that increasing tape speed
significantly improve high frequency response and dynamic range. With the
already wide frequency response of the SD-7 at standard speed, the faster speed
delivers exceptional reproduction quality in distortion, frequency and
dynamics.
Dual motor
drive: a smooth consistent tape transport system is essential to high quallity
sound reproduction. That is why we use a highly refined, heavy duty DC servo
motor and independent reel motor.
Sendust
alloy R/P head: although it has been used in professional applications for
several years, sendust alloy is just now beginning to appear in decks
engineered for consumer use. It has received wide spread acclaim from
professionals and audiophiles alike for its superior electrical characteristics
and longer life expectancy.
Three head
configuration with double Dolby:
Marantz
utilizes a unitized housing for the record and playback heads. Because the gaps
on both heads must be permanently aligned to prevent drastic high frequency
roll-off. The single housing guarantees top performance and reliability. The
benefit of three head configuration is its ability to provide tape/source
monitoring while you record.
Dual gap
erase head for superior erase performance.
Individual
tape selectors and adjustable bias control: the SD-7 provides individual tape
selectors (EQ/bias) for all three standard tape formulations plus one for
todays new metal tape. For additional accuracy marantz has included a bias
control that can be adjusted to compensate for the slight variations in bias
requirements that exist between tapes of various manufacturers.
Specifications:
Style: Direct Load
Tape Drive
System: Single capstan drive
Cartridge:
philips type compact cassette
Track
Stystem: compatible Stereo 4-track
2-channel
Tape
Speed: 4,75 cm/sec, 9,5 cm/sec
Heads: 3 head system
Rec/Play: Sendust Alloy,
Erase: Ferrite
Motor: DC Servo Controlled Motor x 2
Meters: LED peak x 2
Recording
System: AC Bias
Erasing
System: AC Erase
Semiconductor
Complement: 91 Transistors; 71 Diodes; 7
IC's; 8 LED's
Overall
Frequency Response (Dolby off)
Tape Speed
at 20 dB for 4,75 cm/sec
Ferric Oxide
Tape : 25 Hz - 17 kHz (±3 dB)
CrO₂ Tape
: 25 Hz - 18 kHz (±3 dB)
Fe Cr Tape
: 25 Hz - 18,5 kHz (±3 dB)
Metal Tape
; 25 Hz - 20 kHz (±3 dB)
Tape Speed
at 20 dB for 9,5 cm/sec
Ferric Oxide
Tape : 20 Hz - 21 kHz (±3 dB)
CrO₂ Tape
: 20 Hz - 23 kHz (±3 dB)
Fe Cr Tape
: 20 Hz - 23,5 kHz (±3 dB)
Metal Tape
; 20 Hz - 25 kHz (±3 dB)
Signal-to-Noise
Ratio (CrO₂)
Tape Speed
4,75 cm/sec
Dolby On/Off
: 69 dB / 60 dB
Tape Speed
9,5 cm/sec
Dolby On/Off
: 72 dB / 63 dB
Wow and
Flutter
Tape Speed
4,75 cm/sec
DIN WTD /
WRMS : 0,08% / 0,05%
Tape Speed
9,5 cm/sec
DIN WTD/
WRMS : 0,06% / 0,03%
Outputs
Level/Impedance
Line : 650 mV/1,2 k Ω
Headphone
: 43 mV/150 Ω
Inputs
Sensitivity/Impedance (level at 0 VU)
Line : 30 mV/35 k Ω
Mic ; 0,15 mV/6,8 k Ω
Fast Rewind
and Forward Time : 80 sec.
AC Line
Voltage: 220 V AC 50 Hz (110/220 V,
220/240 V 50/60 Hz)
Power
Consumption: 63 W
Dimensions
(W x H x D): 416 x 146 x 243 mm
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