Klein & Hummel ET 20 specifications

Category : Tuner

General

connectors

Technical data

special features

sources

Other models from the same series:

manufacturer: Klein & Hummel
model: ET 20
year of construction: 1967/68 - 1977
Made in Germany
colour: aluminium-colour with real wood Cabinet in walnut, Anthracite or color
remote: --
power consumption: 12 watts
dimensions (W x h x d): 412 x 110 x 265 mm - Front without housing: 410 x 100
weight:
factory price approx.:
- 1968: With a walnut case 896.- DM, with anthracite housing 911.- DM
- 1969: Without housing, 854.- DM, with wooden case or in color 896.- DM, with anthracite housing 911.- DM
- 1973 - 1975: Without housing 1,181.- DM, with wooden case or in color 1,228.- DM
- Unclear whether 1,380.- DM the last sale price

1968: With a walnut case 896 was.- DM, with anthracite housing 911.- DM
1969: Without housing, 854.- DM, with wooden case or in color 896.- DM, with anthracite housing 911.- DM
1973 - 1975: Without housing 1,181.- DM, with wooden case or in color 1,228.- DM
Unclear whether 1,380.- DM the last sale price

number of inputs: 1
- FM antenna: 240/ 300 643961b8da111c0a15d770a1109a86d4s balanced (IEC / DIN 45316 Jack)
number of outputs: 2
- amplifier: 0 - 775 mV/ 6 kΩ at 40 kHz deviation (5-pin DIN; PIN: 3 L, 5 R, 2 mass)
- tape: ~ 25 mV/ 6 kΩ at 40 kHz deviation (5-pin DIN; PIN: 4 L, 1 R, 2 mass)

FM antenna: 240/ 300 643961b8da111c0a15d770a1109a86d4s balanced (IEC / DIN 45316 Jack)

amplifier: 0 - 775 mV/ 6 kΩ at 40 kHz deviation (5-pin DIN; PIN: 3 L, 5 R, 2 mass)
tape: ~ 25 mV/ 6 kΩ at 40 kHz deviation (5-pin DIN; PIN: 4 L, 1 R, 2 mass)

channels: (FM)
frequencies:
- FM: 87.5 - 108 Mhz
frequency response:
- 20 - 15 000 Hz (+ 0 dB, -1 dB)
input sensitivity (40 kHz deviation):
- FM Mono Usable: 0.7 µV
- FM Stereo Usable: a 3.0 µV (squelch)
- FM Mono, 26 dB S/R: 0.8 µV
- FM Stereo 30 dB S/R: 5,0 µV
total harmonic distortion (40 kHz deviation)
- Mono: 0,2%
- Stereo: 0.3% of
signal to Noise ratio (at 1 mV Antenna power):
- Mono: 65 dB
- Stereo: 55 dB
channel separation:
- 1 kHz: 48 dB
selectivity: 58 dB (100 µV, 40 kHz deviation, 300 kHz spacing)
frequency selection: 1.8 dB
in addition to the wave selection:
mirror frequency attenuation: 76 dB
ZF-loss: 98 dB (ZF bandwidth 220 kHz; Linear part of the discriminator level 500 kHz )
ON-suppression: 58 dB (at 1 mV antenna voltage)
RDS: --
station memory: 5

Defeatable auto-focus tuning (AFC capture range of ± 200 kHz)
5 station memory by means of handwheel per Station, on front adjustable
ratio in the middle of display
Stereo Filter can be activated (+5 dB signal-to-noise distance at the same time reduced crosstalk attenuation above 1 kHz)
audio output level (amplifier) back Could sided customizable

are for the installation into a piece of furniture, etc. without the wood case ordered.
At the market launch, the tuner was a top product compared to other products due to its excellent performance characteristics, which is probably why it remained unchanged for 10 years until the introduction of the FM 2002 in 1977 (!) remained in the assortment. Although in the end it was certainly no longer competitive in terms of design and equipment features.