Yamaha T-1
The Yamaha
T-1 is designed and built to deliver the kind of audio performance that more
than matches that of recent model stereo amplifiers, especially in areas
critical to the quality of reproduced sound. For example, the FM MPX
demodulator - which determines the quality of FM stereo sound - is a
Yamaha-developed, highly advanced DC-NFB-PLL switching circuit built around a
DC amplifier of especially high slew rate. This new development holds
distortion to below 0,3%, signal-to-noise ratio at least as high as 100 dB and
stereo separation above 70 dB.
Another
instance of the T-1's technical excellence is found in its advanced FM pilot
cancelling circuit which tracks both the level and phase of the 19 kHz pilot
signal and eliminates it completely befotre it reaches the switching circuit.
This dramatically reduces the intermodulation distortion, enhancing the tuner's
frequency response to an incredibile DC - 18,000 Hz.
More
important, the superb audio performance of the T-1 is based on a minimum FM
selectivity of 55 dB in the Local mode, thanks to Yamaha's FM IF Differential
Gain Direct View Analysis. While the 55 dB selectivity is an excellent figure
that guarantees superb audio performance from normal strength FM signals. The
T-1 will automatically switch over to the DX mode when it detects enough
interference to deteriorate the quality of the signal. In the DX mode, the
tuner offers exceptionally high 92 dB selectivity, thus always assuring
excellent audio performance above a prescribed level.
Features:
Advanced
Circuit Configuration.
Sensitive FM
Frontend
Selectable
Local/Auto DX Modes for FM IF
Yamaha
Exclusive Technology in Stereo Demodulator
Yamaha's
Tracking-Type Pilot Signal Pure Canceller
FM Muting
Circuitry, OTS and AM
Extended-Range
Signal Quality Meter and Tuning Meter
FM Blend
Switch
Recording
Calibrator Switch
Two Pairs of
Output
Specifications:
FM Section
Tuning
Range: 88 - 108 MHz
50 dB
Quieting Sensitivity [mono/stereo]: 3 µV
(14,8 dBf) / 35 µV (36 dBf)
Usable
Sensitivity (IHF 98 MHz, mono, 40 kHz dev.):
300 ohm
: 1,7 µV (9,8 dBf) / 1,1 µV (DIN)
75 ohm
: 0,85 µV (9,8 dBf) / 35 µV (DIN)
Image
Response: 90 dB
IF Response
Ratio: 100 dB
Spurious
Response Ratio: 100 dB
AM
Suppresion Ratio (IHF): 65 dB
Capture
Ratio: 1,0 dB
Alternate
Channel Selectivity (IHF):
DX Mode
: 92 dB / 65 dB (DIN)
Local Mode
: 55 dB / 35 dB (DIN)
Signal-to-Noise
Ratio (at 85 dBf):
Mono : 86 dB / 80 dB (DIN)
Stereo
: 84 dB / 78 dB (DIN)
Distortion
MONO (at 65 dBf):
Local / DX
at 100 Hz : 0,05% / 0,1%
Local / DX
at 1 kHz : 0,05% / 0,15%
Local / DX
at 6 kHz : 0,08% / 0,3%
Distortion
STEREO (at 65 dBf):
Local / DX
at 100 Hz : 0,05% / 0,5%
Local / DX
at 1 kHz : 0,05% / 0,5%
Local / DX
at 6 kHz : 0,08% / 0,8%
Intermodulation
Distortion (IHF)
Mono
Local/DX : 0,05% / 0,5%
Stereo
Local/DX : 0,08% / 1,0%
Sub-carrier
Product Ratio: 70 dB
Stereo
Separation [Local/DX]:
At 1 kHz
: 55 dB / 30 dB
At 50 kHz
: 45 dB/ 25 dB
At 10 kHz
: 45 dB/ 25 dB
Frequency
Response: 50 Hz - 10 kHz ±0,3 dB; 30 Hz - 15 kHz ±0,5 dB
Muting
Threshold: 5 µV (19,2 dBf) Auto DX Mode
AM Section
Tuning
Range: 525 - 1605 kHz
Sensitivity
(IHF): 15 µV
Selectivity
(IHF): 30 dB
Signal-to-Noise
Ratio: 50 dB
Image
Response (1 khz): 70 dB
Spurious
Response (1 kHz): 70 dB
Total
Harmonic Distortion: 0,4%
Audio
Section
Output
Level/Impedance (1 kHz)
FM
(100% mod. Vol. Min-Max): 0,1 - 1,0 V/
220 Ω
FM
(100% mod. Vol. Center): 0,5 V/ 2,5 k Ω
AM
(30% mod. Vol. Min-Max): 2,5 - 250
mV/220 Ω
AM
(30% mod. Vol Center): 125 mV/2,5 k Ω
Recording
Calibration Output (333 Hz, corresponding to FM 50% modulation):
Vol
Min-Max : 50 - 500 mV / 220 Ω
Vol.
Center : 250 mV / 2,5 k Ω
General
Semiconductors" 60 Transistors; 5 ICs; 2 Zener Diodes; 2
LEDs; 1 FET, 2 FM ceramic filters; 2 block ceramic filters; 1 AM ceramic
filters
Power
Supply: available for all supply
voltages and frequencies
Power
Consumption: 12 W - 13 W
Dimensions
(W x H x D): 435 x 97 x 376 mm
(17-1/8" x 3-7/8" x 14-7/8")
Weight: 5,7 kg (12 lbs 9 oz)
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