The Onkyo
Quartz-Locked Receiver, compare it against every known receiver. You'll see
there's no comparsion.
Quartz-Locked
technology is a dramatic breakthrough in automatic drift-free and virtually
distortion-free FM reception.
There are no
buttons to push, no switches to throw, nothing extra to do to lock in a signal.
Once a station is tuned in, it's locked in. Quartz-Locked in. And any factor
which can cause tuner drift is automatically compensated for so the TX-4500
assuresconstant pinpoint FM reception, maximum channel separation and minimum
distortion.
But that's
only the FM story. There's virtually nothing you can't accomplish with the
TX-4500.
Flawless
programs come off records and tapes. Or use the TX-4500 to make your own tapes.
Or mix your own programs with multiple tape inputs and dubbing.
The TX-4500
does it all. Rated according to FTC specs, the TX-4500 delivers 55 watts
minimum RMS per channel, both channels driven into 8 ohms over a 20 Hz to 20
kHz spectrum, showing less than 0,1% THD.
In addition,
the TX-4500 also evidences exceptional transient response, the ability of an
amplifier to follow sudden changes in the level of sound signals. Dual
oscilloscope traces, with a 50 Hz square
wave fed through, have shown less than a 5% tilt. Generally, conventional amplifiers under the
same conditions have shown a 25-50% tilt.
The onkyo
Quartz-Locked Receiver offers one more important advantage - outstanding value
for superior performance.
Quartz-Locked
Tuning Creates A New Degree of Tuning Accuracy
In a radical
departure from conventional FM tuner design principles, Onkyo engineering has
created a quartz oscillator controlled circuitry for the most accurate station
tuning possible. A superbly stable frequancy is generated in a quartz
oscillator, and this unvarying frequency becomes the reference for the tuned
stages of the FM circuits. Even the slightest deviation from ideal tuning
condition is detected instantly and compensated automatically, assuring
razor-sharp tuning and minimum distortion at all times.
Automatic
"Human Touch Sensor"
As you touch
the tuning knob, a special sensor circuit detects your touch and relases the
above-named quartz lock. Then, after you have tuned in another station and
relased the knob, the quartz circuit lokcs again. You need not even tune in a
station very preciselly, as the quartz lock will automatically compensate for
tuning errors.
Enormous
Reserve of Output Power
The
ultra-moder, all direct coupled amplifier section delivers 55 W of clean Onkyo
power per channel into 8 ohms, over the entire frequency range from 20 Hz to 20
kHz, with both channels driven, at no more than 0,1% THD. In practical terms,
this means that you heve a tremendous reserve of power available to handle even
sustained high volume levels and signal peaks without driving the amplifier
into clipping distortion.
Total
Control Over What You Hear and How
In addition
to the standard balance, high and low filter, mode and loudness controls, the
TX-4500 features click-stop volume and tone controls giving accurately
reproducible settings. Its FM Muting Lock switch eliminates inter-station noise
on FM, and its Dolby Adaptor switch establishes the correct (25 µsec)
deemphasis for Dolby processed FM broadcasts.
Prepared for
Future System Expansions
The TX-4500
can serve as the heart of an astounding, elaborate audio system for home and
professional uses. It can drive three pairs of speakers, can accommodate two
turntables and three tape dekcs, a Dolby noise reduction adaptor, and FM
4-channel decoder for areas with 4-channel FM broadcasting, and it can even be
adapte for such advanced applications as equalizer, multi-amplifier and P.A.
system. The TX-4500, in other words, know few limits.
Massive,
Modernistic Styling
Technological
excellence inside has its counterpart in the solid looking external appearance
with its protruding glass panel and heavy battery of controls.
Specifications
Amplifier
Sections
Power
Output:
65
watts per channel (min. RMS, 4 Ω both
channel driven, 20-20,000 Hz, 0,1% THD)
55
watts per channel (min. RMS, 8 Ω both
channel driven, 20-20,000 Hz, 0,1% THD)
Total
Harmonic Distortion: 0,1% at rated power
( 0,08% at 1 watts output)
IM
Distortion: 0,3% at rated power (0,1% at
1 watts output)
Damping
Factor: 50 (8 Ω, 1 kHz 10 watts)
Frequency
response: 15 - 30,000 Hz (±1 dB) / 2 -
80,000 Hz (±1 dB at main amplifier)
Tilt
(sag): better than 5% at 50 Hz
Sensitivity
and Impedance:
Phono
1, 2 : 2,5 mV/ 50 k Ω
Tape
Play 1, 2, 3 : 150 mV/50 k Ω
Tape
Rec 1, 2, 3 : 150 mV/50 k Ω
Dolby
Out : 150 mV/50 k Ω
Dolby
In : 580 mV/50 k Ω
Pre
Out : 1 V/ 3 k Ω
Main
In : 1 V/100 k Ω
Phono
Overload: 200 mV RMS 1 kHz 0,1%
Bass Control
: ±10 dB at 100 Hz
Treble
Control: ±10 dB at 10 kHz
Signal-to-Noise
Ratio:
Phono : 65 dB (IHF C Network)
Tape : 80 dB (IHF C Network)
Filters:
High : 6 kHz at 6 dB/oct
Low : 100 Hz at 6 dB / oct
Tuner
Section
Tuning
Range:
FM : 88 - 108 kHz
AM : 530 - 1605 kHz
Usable
Sensitivity FM:
Mono : 1,8 µV (10,3 dBf)
Stereo
: 5 µV (19,2 dBf)
50 dB
Quieting Sensitivity FM:
Mono : 4 µV (17,2 dBf)
Stereo
: 40 µV (37,2 dBf)
Intermediate
Frequency:
FM : 10,7 MHz
AM : 455 kHz
Capture
Ratio FM: 1,5 dB
Image
Rejection Ratio:
FM : 70 dB
AM : 40 dB
IF rejection
Ratio:
FM : 100 dB
AM : 40
dB
Signal-to-Noise
Ratio:
FM
[mono/stereo] : 70 dB / 65 dB
AM : 40 dB
Alternate
Channel Att. FM : 70 dB
AM
Suppression Ratio FM: 50 dB
Harmonic
Distortion FM:
Mono : 0,2%
Stereo
: 0,4%
Harmonic
Distortion AM: 0,8%
Frequency
Response FM: 30-15,000 Hz +0,5 -2 dB
Stereo
Separation FM: 40 dB at 1 kHz (30 dB at
100-10,000 Hz)
Muting Level
FM : 4 µV (17,2 dBf)
Stereo Lamp
Level FM : 4 µV (17,2 dBf)
Quartz Lock
level FM : 4 µV (17,2 dBf)
Tuning
Meters: signal Strength and Center
Tuning
Antennas:
FM
: 300 Ω balanced or 75 Ω unbalanced
AM : Built in ferrite core antenna and external
terminal
Semiconductors: 1 FET; 70 Transistors, 8 ICs; 59 Diodes
Power
Supply: 120 V or 220 V 50/60 Hz
Dimensions
(W x H x D): 583 x 163 x 430 mm
(21-3/16" x 6-7/16" x 16-15/16")
Weight: 16,6 kg (36,5 lbs)
Cabinet: Walnut grained vinyl over lauan plywood