Maintained! A VT-4C single amplifier built into the Suzurando SL-990 chassis. The transformer is equipped with a Tango X-10S pair, MS-210DR, and CH-12-200D. I am overwhelmed by the strong sound pressure that seems to push it to the front. If you combine it with a large horn system, etc., you will be addicted to the pleasure of being bathed in music (Kojima Yosuke)
Maintenance information: 2024.5.2 maintained (relay disassembly repair · block capacitor 47 μF x 2 other deterioration replacement 2 units · resistance 1W deterioration replacement · 3 x ham balance volume addition · resistance 5 W addition · bridge diode addition · power supply switch deterioration exchange · electrolytic capacitor 68 μF noise exchange · 2 film capacitor 1/2 W noise replacement · 3 resistor 1/2W noise replacement · 3 resistor 1/2W noise replacement · Operation check with AC 100V (rated output 12 W, measured at SP: 8 ohm*BIAS and HUM BAL. on the back side have been adjusted. (Please adjust only when the output tube is replaced)
Accessories: power cable
Main specifications: W500 x H270 x D275 mm 36.7 kg (actual measurement, not including protrusions)
Line transformer using TANGO's input transformer, NN-600-600. The overall sound resolution is increased, and the sense of sound pressure is also enhanced. Recommended for those using speakers with horn drivers. TANGO badges are discolored, and there are tape marks and bumps on the chassis (Kojima Yosuke)
Maintenance information: 2024.4.18 Operation confirmed
Accessories: none
Main specifications: primary impedance 600 Ω (150 Ω split) secondary impedance 600 KΩ (150 kΩ split) primary inductance 70 H W140 × H110 × D100 mm 1.8 kg (actual measurement, not including protrusions)
The price has been drastically reduced! 2024/3/17 sales price 69,800 yen JBL professional tweeter. Since it is designed to make the sound fly far, the sound quality is solid and more straight compared to the company's consumer model 077. The mid to high frequencies are vivid, and the low frequencies are finished with a tight sound. The exterior has dullness and small scratches due to aging. Serial 81380/52416 (Yonejima Satoshi)
Maintenance information: 2024.3.17 sweep test good
Accessories: No accessories
Main specifications: horn type tweeter impedance 16 ohms playback frequency band 6,500 to 21,500 Hz (manufacturer specified), crossover 7 kHz, efficiency 105 dB, W100 x D84 mm, 3 kg/book