Toshiba SA-7150

The Toshiba 7150 locks into the center of any station's assigned broadcast frequency and eliminates drift.

A few yearas ago, Toshiba introduced and marketed the first fully electronic digital-synthesized tuner. Now Toshiba has another first. We've built a digital-synthesized tuner into a high-powered, low-distortion FM/AM receiver; the Toshiba 7150 with Synthetune™

Synthetune is a function that provides tuning so accurate even a center tuning meter is unnecessary.
Drift is eliminated.

The 7150's FM tuner section also contains flat group delay IF circuitry. And a quartz crystal oscillator, which automatically locks into the center of any station's assigned broadcast frequency - as precisely as the station's own transmitter.

Tune the 7150 just by pushing the auto-scan button. It scans the full range of the  AM or FM band, stopping precisely at each listenable station. Bright green LED numerals instantly display all frequencies as they are tuned. Of course, there's more to the 7150 than Synthetune. It also has separate transformers for class A and class B amplifier sections. The toroidal transformer for class B amplification has separate left and right power supplies.

It also has Dolby FM and an air check switch for accurate tape recording. Furthermore the 7150 delivers a minimum of 150 watts per channel into 8 ohms, 20 Hz to 20,000 Hz , with no more than 0,05% Total Harmonic Distortion. And the restof the specs are just as impressive.

Specifications

Continuous Power Output:  150 W/channel (min. RMS at 8 Ω, 20-20,000 Hz , no more than 0,05% T.H.D.)

PoweR Output:

At 4 Ω :  2 x 230 W (20 - 20,000 Hz both channel driven

At 8 Ω :  2 x 160 W (1 kHz both channel driven)

At 4 Ω :  2 x 250 W ( 1 kHz both channel driven)

Total Harmonic Distortion ( at 8 Ω)

At Rated Power Output :  0,05%

At 1 W :  0,03%

Intermodulation Distortion:  0,05%

Damping Factor:  50

Input Sensitivity/Impedance:

Phono 1 :  2,5 nV/47 k Ω

Phono 2 :  2,5 mV/ 47 k Ω (100p/250p/450pF)

Tuner, Tape, Aux:  150 mV/47 k Ω

Phono Overload level:  350 mV RMS at 1 kHz

Output level

Tape REC :  150 mV

DIN :  30 mV

Pre Out :  1000 mV

Frequency Response:

Phono (RIAA Equalization) :  30 Hz to 15 kHz; ±0,2 dB

Aux, Tape :  10 Hz to 50 kHz; +0,5 -1 dB

Tone Control

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Turnover Frequency:  200/400 Hz; 2,5 K/5 kHz

Loudness Contour:  +8 dB at 100 Hz +4 dB at 10 kHz

Signal-to-Noise Ratio(IHF short-circuited A network rated power)

Phono :  80 dB

Aux, Tape :  95 dB

Filter

Low :  20 Hz -6db/oct

High : 7 kHz -6 dB/oct

FM Tuner Section

Usable Sensitivity:  Mono 9,8 dBf 91,7 µV)

50 dB Quieting Sensitivity: 

Mono 14,7 dBf (3,0 µV)

Stereo 37,6 dBf (42 µV)

Signal-to-Noise Ratio:

Mono :  75 dB

Stereo :  70 dB

Distortion [Wide/Narrow]

At 100 Hz :  Mono 0,08/0,1%; Stereo 0,1/0,2%

At 1 kHz :  Mono 0,08/0,1%; Stereo 0,1/0,2%

At 6 kHz :  Mono 0,1/0,2%: Stereo 0,15/0,25%

Frequency Response:  20 Hz to 15 kHz ±0,5 dB

Alternate Channel Selectivity:

Wide :  50 dB

Narrow :  80 dB

Capture Ratio:  1,0 dB

Spurious Response Ratio:  100 dB

Image Rejection Ratio:  85 dB

IF Rejection Ratio:  100 dB

AM Suppression Ratio:  55 dB

Stereo Separation:  50 dB (1 kHz); 35 dB (30 Hz -15 kHz)

AM Tuner Section

Sensitivity:  350 µV/m (IHF, ferrite antenna)

Selectivity:  30 dB

Signal-to-Noise Ratio:  50 dB

Image Rejection Ratio:  40 dB

Miscellaneous

Power Requirements:  AC 120 V, 60 Hz - 220- 240 V 50/60 Hz

Power Consumption:  650 watts (UL) 6,8 A (CSA)

Dimensions (W x H x D):  550 x 200 x 500 mm

Weight:  27 kg

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