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Technics ST-9030

FM Stereo Tuner (1977-81)

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Technics ST-9030

Description

Staggering as the ST-9030 technical specifications may seem, the real test of true high quality performance lies in waveform fidelity.

Although the waveforms of all signals in music programs are usually extremely complex, there are two relatively simple forms - the square wave, and the tone burst signals that will clearly show how well the tuner performs.

The comparison here between Technics ST-9030 (where design considerations were all aimed at waveform fidelity) and a conventional tuner (where waveform fidelity has not been of prime importance) clearly illustrates the logical conclusion resulting from a critical difference in approach to this means of testing quality and performance.

The very steep sag in the square wave output signal in the conventional tuner indicates poor amplification phase characteristics in the low frequency region (thus introducing distortion), while the suppressed sections at the start of the 1kHz sine wave signals signify a contracted dynamic range in the low frequency region.

The ST-9030 shows clear superiority over the conventional tuner. Although the time lag is not so critical if it is consistent, the unstable response patterns, the shortened leading edge amplitudes and the ringing during the off times will introduce audible distortion.

Specifications

Type: Mono/Stereo Tuner

Tuning Bands: FM

Tuning Scale: Analogue

FM Tuning Range: 88 to 108 MHz

Sensitivity: 1.2uV (FM)

Signal to Noise Ratio: 75dB (FM)

Distortion: 0.3% (FM)

Selectivity: 90dB (FM)

Frequency response: 20Hz to 18kHz (FM)

Output: 1500mV

Dimensions: 450 x 92 x 370mm

Weight: 7.4kg

Year: 1977

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Reviews

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rating
Reviewed Jan 05th, 2016 by titounat

Very nice tuner, very sensitive and very quite !
it has a 8 gangs variable capacitor.

But for best sounding, you have to replace the very poor original op-amp with a Burr Brown or with the very nice Sparkos SS3602 !

rating
Reviewed Oct 29th, 2014 by tannoyman

very well engineered tuner with great sound quality. Also very sensitive!!!!

rating
Reviewed May 21st, 2014 by rjm003

Great-looking and great-sounding tuner.

 

Comments

re: ST-9030

I bought the complete FLAT-Series in Germany in the years 1978-1980
With two Amps SE-9060 - After the Digital-Tuner is coming I "must” have this: ST-9038 with SH-9038 Programmable Unit - The ST-9038 was never so sensitive like the 9030 - Than after the SH-9038 is unreparable I bought the St-1000 with DAB-
but today I only hear with this Vintage-Tuner ST-9030 - It is one of the best Tuners, I think....

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