The Philips
N4450 (1971 -1973) stands rigt at the
top of that very select class of tape recorders built specifically for the most
discriminating non-professional user. No other does so many things so
brilliantly.
To build the N4450,
we drew on decades of experience in constructing professional recorders for
computer installations, airlines and studios all round the world.
The same experience
is behind a complete range of Philips Hi-Fi stereo tape recorders and tape
deck/pre-amp.
Special Featuring
Three motors for
perfectly smooth, silent drive and minmum wear - one hall brushless DC motor
for capstan drive, two DC motors to drive the reels.
Six heads for
forward and reverse - two recording, two playback, two erase.
Tape tension
comparators for constant winding torque.
Automatic reverse
(continuous reverse as an optional extra). Also manual reverse by pushing a
button at any position on the tape.
Automatic stop at
end of tape. Four-digit counter with pushbutton zero reset. Four-digit
'Auto-stop' to halt tape at predeterminated point, with pushbutton on/off
switch.
Specification
fully according to DIN 45500 Standard, with signal-to-noise ratio better than
48 dB, distortion less than 1%, wow and flutter ±0,15% at 7½ ips, and frequency response 40 - 20,000 Hz at
7½ (within 6dB).
Genuine 2 x 20 watt
(RMS) hi-fi amplifier, which you can use with the recorder's motors switched
off. The N4450 can therefore form the
heart of a top hi-fi system.
Solenoid-controlled
operation for quietness and reliability.
Illuminated
tip-touch controls for transport functions and recording mode.
Selector
switch for reel size. 10½ reel
capacity, metal hub reel locks.
Optional extra unit
gives full remote control of transport functions and recording mode, with the
same illuminated tip-touch controls as the recorder.
Cursor-type slide
switches for function selection - selected function is illuminated.
Precise sliding
see-through control for recording and playback.
Pushbutton select
filters for rumble, scratch and physiology.
Mini computer is
programmed to 'remember' your instructions - prevents operational errors that
might damage teh recorder.
Synchronous clock
with built-in device for starting and stopping the recorder at any
predetermined time within a 24-hour period.
Sockets for
record-deck, rsdio, another recorder, musical instrument, loudspeaker
enclosures.
Roller blind at
front conceals easily accessible sockets for microphones take in/out and
headphones.
Two calibrated,
illuminated VU-type meters for recording and playback level indication.
Three speeds: 7½, 3¾ and 1⅞ ips.
Four tracks.
Three-step speed
control for fast winding/rewinding.
Levers for cueing
during fast wind/rewind.
Splicing device
under lower head cover - both head covers easily detachable.
Suitable for
horizontal or vertical operation; stereo or mono recording and playback;
multiplay; echo during recording; A-B monitoring; mixing; playback and
monitoring during recording by means of connected loudspeakers or headphones.
Recording stand-by
(recording level adjustable with tape stationary).
Transparent lid has
lower part hinged for easy access to controls.
Specifications
Mains
Voltages/Frequency: 110-127, 220-240
V; 50/60 Hz
Power
Consumption: min. 29 W/120 W max.
Number of
Tracks: 4
Tape Speeds:
7½ ips (19 cm/sec) ±1%
3¾ ips (9,5 cm/sec) ±1%
1⅞
ips (4,75 cm/sec) ±2%
Max
Reel Diameter: 10½" (26,5 cm)
Number of
Heads: 6 (2 recording, 2 playback, 2
erase heads)
Number of
Motors: 4 (one Hall motor -
collectorless DC motor - for driving the capstan; two DC motors for driving the
reel discs, one synchronous motor)
Wow And Flutter:
7½ ips : 0,15%
3¾ ips : 0,2%
1⅞
ips : 0,35%
Winding Time:
26 cm reel with LP
tape (1080 m) : ≤250 sec
18 cm reel with LP
tape (540 m) : ≤150 sec
Input Sensitivities:
Micro : 0,15 mV/2 kohms
Tape : 2 mV/20 kohms (1, 4)
Tape : 100 mV/1 Mohm (3, 5)
Tuner : 100 mV/100 kohms
Phono : 1,5 mV/47 kohms (MD/ceramic HiFi)
Phono : 100 mV (X-tal)
Aux : 2 mV/20 kohms (1, 4)
Aux : 100 mV/1 Mohm
(3, 5)
Output Voltage:
Tape ; 1 V/50
kohms
Monitor : 1 V/50
kohms
Headphone : 3 V/400
- 600 ohms
Output Power: 2 x 20 W (distortion at 1%, 8 ohms)
Frequency Range
(within 6 dB):
7½ : 40 -20,000 Hz (40 -16,000 Hz with
stereofilter)
3¾ : 40 -
15,000 Hz
1⅞
: 60 - 8,000 Hz
Rumble Filter: -10 dB at 30Hz
Scratch filter: -15 dB at 15 khz
Physiological Tone
Control:
+14 dB at 50 Hz
+6 dB at 10 kHz
Erase
Frequency: 100 kHz (±10%)
Dimensions (including Lid): 520
x 500 x 210 mm ( 20½" x 19⅝"
x 8⅜")
Weight: approx 20 kg (44 lbs)