Luxman K-240 Cassette-deck

General:

Around 1984 Luxman company came with this cassette-deck K240.

Front ^

 

Special futures:

Download the owners manual here of the K240

Automatic tape selection makes it impossible to set the EQ different to the type of the tape.

The deck has a illuminated cassette compartment and Dolby B & C. Dolby C is of high quality.
Also a adjustable headphone amp. inside.

The deck is well built and the mechanics are good.

 

Specifications:

Heads: 1 x record/playback, sendust or hexalam, 1 x erase dual gap.
Tape Type: Ferro, Cr02, Metal
Noise Reduction: B, C,
Frequency Response: 30Hz to 18kHz  (Metal tape)
Signal to Noise Ratio: 68dB  (dolby B Metal tape) 71dB (dolby C)
Wow and Flutter: 0.07%
Total Harmonic Distortion: < 3%
Input: 100mV (line)
Output: 0.7V (line)
Semiconductors: 14 x IC, 49 x transistors, 14 x diodes, 2 x zener diodes, leds.
Dimensions: 438 x 100 x 250mm
Weight: 3.8kg

 

Schematic:

Download the service manual here of the K240

 

 

[photo]

Interior ^ Electronics

 

Modifications:

This cassette deck has power rail problems, the power design is incorrect, it should be upgraded.
Several parts is the power section should be exchanged, you may buy the correct ones to get the design right.
The deck can be updated by placing extra capacitors in the power rail to get better power rail properties.
This power design problem is in all models in the 200 series of Luxman, The K240 has this problem too,
its clearly a matter of planned obsolecence.

The deck is easely adjustable for modern tape types and personal taste in recording.

The mechanics of the deck are just to standards, but not as well built as a Luxman K92.

 

[photo]

Tape mechanics ^ Laufwerk.

 

Sound:

Sound is very good for such simple and relatively cheap deck.

 

German product folder v

construction

© Hans Hilberink - PE1MMK ® 2003 - Last update: 05-01-2018.