Duetta, a floorstanding loudspeaker with Eton drivers and Air Motion Transformer
taken from K+T 1/2002: superior to Triola and, therefore, K+T reference speaker

Duetta
Technical data:
- impedance: 4 Ohm
- SPL: 86 dB
- frequency range (-3dB): 50-22.000 Hz
- crossover frequencies: 120 Hz, 3 kHz
- size (HxWxD): 117 x 35 x 49 cm

This big 3 way bass reflex speaker is a beautiful design: The cabinet is braced to prevent vibration (pictured below right).

Duetta is a reference project by Heinz Schmitt from K+T and a yardstick for future developments.

Review by Klang+Ton: Duetta
... "There are many loudspeakers around that reproduce music in an impressive manner. But the hands down approach and the matter of course displayed by the Duetta surpassed our expectations and hopes by far. A singer just breathes without any asthmatic noise before intonating and the Bremen Philharmonics didn't tear up their sheet of music when paging like suggested by many other speakers. Bass reproduction did do more than justice to the standard of quality. Low frequencies were only audible when passed on by the amplifier, but then with awe-inspiring pressure and fascinating precision. No annoying, permanent booming rumble disturbed the joy of music. ...The ER4 gave the most lasting impression. Highest frequencies have rarely been reproduced so differentiated, harmonically and airy, with such clearly structured details, but without being a nuisance."
 

The kit consists of:

- 1 x Eton ER4, Air Motion Transformer
- 1 x Eton 7-360/37 HEX, midrange driver
- 1 x Eton 11-581/50 HEX, bass driver
- 6 bags damping material
- 1/2 pack damping material
- 6 Allen wood screws 5x30
- 8 Allen wood screws 4x25
- 12 PAN screws 4x20
- 1 circular terminal 7147 with gold plated brass binding posts
- 2 metre cable 2 x 2.5 mm2
- 2 metre cable 2 x 1.5 mm2
- 1 bi-wiring terminal with gold plated brass binding posts, for the top
- building instruction

A crossover kit, components to be mounted on wood::
- 12 mH transformer core coil with 2 mm wire
- Mundorf 0.56 mH cfc 14 copper foil coil
- 0.33 mH air core coil/0.71 mm
- 0.47 mH air core coil/0.71 mm
- 100 uF MKT capacitor
- 4,7 uF MKT capacitor
- 8.2 uF Jensen oil paper
- 3.9 Ohm MOX10 resistor (orange-white-gold)
- 1.5 Ohm MOX10 resistor (brown-green-gold)
- 4.7 Ohm MOX10 resistor (yellow-purple-gold)

Price per unit without cabinet:   EUR 1030,00

Duetta active, a floorstanding loudspeaker with Eton drivers and Air Motion Transformer
taken from K+T 5/2002, equipped with SAC electronic

Like standard Duetta, however, with SAC electronic (to be ordered from SAC or us).

Our kit contains:
- 1 x Eton ER4, Air Motion Transformer
- 1 x Eton 7-360/37 HEX, midrange driver
- 1 x Eton 11-581/50 HEX, bass driver
- 6 bags damping material
- 1/2 pack damping material
- 6 Allen wood screws 5x30
- 8 Allen wood screws 4x25
- 12 PAN screws 4x20
- 2 metre cable 2 x 2.5 mm2
- 2 metre cable 2 x 1.5 mm2
- 1 bi-wiring terminal with gold plated brass binding posts, for the top
- building instructions for the cabinet

Price per unit without cabinet and amplifier SAC: not deliverable

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