Onkyo T-4
Solid State AM/FM Stereo Tuner with Servolocked Tuning.
Onkyo
maintains its leadership position in solid state audio components with the only
Servolocked tuner made in Onkyo's T-4. servolocked is a unique, proprietary
circuit designed by Onkyo to provide virtually driftfree tuning for days on end
in actual test.
The
Servolocked circuit loop is under the automatic electronic control of another
unique system, Sensitouch, which senses electronic components of your body.
Thus, when you touch the tuning knob, automatic "Human Touch Sensor"
alerts and unlocks the control circuit, allowing tunung while muting
simultaneously cancels noise. When the meter swings into "Lock-on"
area, a front panel indicator reads "Locked". When you release the
tuning knob, the circuit locks on to optimum tuning; the meter is center-set,
and the "Tuned" indicator lights to show you have perfect reception
with maximum separation and minimum distortion.
To sum up,
the T-4 has ease of tuning with pinpoint accuracy.
Phase Locked
Loop MPX Stereo
Clean, sharp
stereo reception and separation is assured by Onkyo's use of a Phase Locked
Loop circuit which synchronizes the stereo pilot signal in phase and frequency
with the received signal. Phase shift is
avoided and stereo separation is stable at 40 dB (1 kHz) and 30 dB (100 -
10,000 Hz).
Front-end
Sensitivity
Sensitivity
and low distortion are a function of the superbly designed front end featuring
a 4-gang variable capacitor with a specially selected FET. Usable sensitivity
is 1,9 µV (mono) and 4,5 µV (stereo0, and the IF Rejection Ratio is 90 dB.
IF
Sensitivity
Carrying
fine performance throughout, Onkyo engineering provides 3-stage phase linear
ceramic filters in the FM Intermediate Frequency Stage, resulting in maximum
frequency response (30 - 15,000 Hz, +0,5 -2 dB) and low distortion. You get an
alternate channel attenuation of 60 dB, and AM Suppression Ratio of 50 dB for
low noise brilliance.
Specifications
Tuning
Range:
FM : 88 - 108 MHz
AM : 530 - 1605 kHz
Usable
Sensitivity:
FM
[Mono/Stereo] : 10,8 dBf (1,9 µV) / 18,3
dBf (4,5 µV)
AM : 25 µV
50 dB
Quieting Sensitivity [Mono/Stereo]: 16,1
dBf (3,5 µV) / 37,2 dBf (4,5 µV)
Intermediate
Frequency:
FM : 10,7 MHz
AM : 455 kHz
Capture
Ratio FM: 1,5 dB
Image
Rejection Ratio:
FM : 60 dB
AM : 40 dB
IF Rejection
Ratio:
FM : 90 dB
AM : 30 dB
Spurious
Rejection FM: 85 dB
S/N Ratio:
FM
[Mono/Stereo]: 70 dB / 60 dB
AM : 40 dB
Alternate
Channel Attenuation FM: 60 dB
AM
Suppression Ratio FM: 50 db
Harmonic
Distortion:
FM
[Mono/Stereo]: 0,2% / 0,4%
AM : 0,8%
Stereo
Separation FM:
40 dB : at 1 kHz
30 dB : from 100 Hz to 10 kHz
Sub Carrier
Suppression FM: 60 dB
Muting Level
FM: 17,2 dBf (4 µV)
Stereo
Threshold FM: 17,2 dBf (4 µV)
Servo Locked
level FM: 17,2 dBf (4 µV)
Frequency
Response FM: 30 Hz - 15 kHz (+0,5 -2 dB)
Output
Voltage:
FM : 0 - 1 V
AM : 0 - 0,3 V
General
Power
Supply: AC 100/120/220/240 V 50/60 Hz
Power
Consumption: 11 W (120 V)
Semiconductors: 5 ICs; 1 FET; 16 Transistors; 24 Diodes
Dimensions
(W x H x D): 444 x 159 x 380 mm
(17-1/2" x 6-1/4" x 15")
Weight: 6,1 kg (13,4 lbs)