Art. No. 5967
Characteristics and sound properties

This 2-way column speaker, ALTO II, designed as a 30 litre vented system, is another suggested application from the Alto series. The same driver arrangement has been selected as for the ALTO I but, here, the lower range octaves benefit from the enlarged cabinet volume and optimum bass frequency to produce powerful, responsive bass.

ALTO II is also well-suited to improving the sound of low-priced compact hi-fi systems.

The ALTO II can be positioned freely anywhere in the room, producing clearly defined spatial sound character.

Component parts list for 1 box

The kit includes all the components listed here but not the cabinet.

1 pc.
Bass-midrange driver
1 pc.
Crossover Alto I/II (with terminal, cables und plugs)
1 pc.
Bass reflex tube
BR 15.34 (full length)
1 pc.
Damping material
Polyester wool
2 bags
Wood screws
3.5 x 19 mm
3 pcs.
Countersunk screws
3.5 x 25 mm
9 pcs.

Technical Data

Rated power
60 W
Maximum power
100 W
Nominal impedance Z
4 Ohm
Übertragungsbereich (-10 dB)
40–22000 Hz
Mittlerer Schalldruckpegel
83 dB (1 W/1 m)
3500 Hz
Net volume
28 l
Außenmaß Höhe
800 mm
Außenmaß Breite
230 mm
Außenmaß Tiefe
230 mm

Frequency- and impedance response


Extract from HiFi Test

"the elegant Alto II bass reflex column speaker fascinated us with its bass reproduction that would put many a speaker twice the size to shame."

Value for money: very good

Extract from Klang & Ton

"Its bass reproduction is not only very rich and very powerful, but in addition highly precise, full of detail and free of colouration. Both the base and lower mid-range remained perfectly neutral."..
"Music reproduction is airy and far reaching."

Value for money: very good