Nordmende 7500 ST

Data[edit]

General

Technical data

Hifi stereo control unit Nordmende 7500/ST
negative feedback: from the output stage via four amplifier stages
Music power: 2x 30 watts
Impedance: 8 Ohm
Headphones: 2x 200 Ohm
Studio output: 2 Volt at 220 Ohm
Dynamic: Phono MM > 50 dB, High level > 60 dB
Tone control (referred to 1 kHz): 40 Hz +15/-17 dB, 20kHz: +15/-19 dB
Stereo balance: +8 dB per channel)
Circuits: 16 FM - 4 changeable by capacitance diodes
Wavebands: 87.5 to 108 MHz
Power supply: 110/130/220/240 V, power consumption 120 Watt
Equipment: 61 transistors (3 FET), 22 diodes (5 Zener diodes) and 7 rectifiers (Sept. 70) resp. 61 transistors (3 FET), 10 Ge diodes, 11 Si diodes, 1 Si rectifier, 2 Se rectifiers, 4 capacitance diodes (Jan. 71)

Special Features

Full transistor unit, two ironless output stages with electronic overload protection, Six programmable VHF fixed station buttons with electronic diode tuning and automatic frequency display from 88 to 108 MHz, VHF component: 3 FET's, quadruple tuning by capacitance diodes, AFC button for electronic retuning, three tuning indicators, connection socket for remote control unit (971.189A). Automatic stereo mono switching, Buttons for mute and stereo mute tuning, Button for rear band control, Continuous treble and bass adjustment by slider, Buttons for contour, noise and rumble, Built-in equalizer preamp for magnetic pickup systems, Level adjuster for all 5 stereo inputs, Headphone jack, 2 volt output jack, Pilot controlled electronic mono stereo switching.