Hawk Tube Loudspeakers

Tube models enhance the sound image

The loudspeakers from Hawk all are constructed in a PVC tube with a rather thin wall (3 mm). The advantage of this construction is that there's almost no dispersion. So the stereo image can be experienced over a large area in the listening room. There's hardly a "hot spot". Also the material PVC is a "thermoplast". This material converts pressure into heat. In that way the cabinet will not vibrate and will not produce "coloration".

Another difference is that the applied filtering is done by a kind of "series filter". This type of filtering uses less components and the cross-over frequency of the various units always is at exactly the same frequency and NOT depending on the tolerance of the components. This technique adds to a more "laid back" performance.

The FR-1

This is our newest "Full Range" model, offering a wide bandwidth, 70 Hz - 18 kHz, without any filtering.

The advantage of a full range system is that there are no phase shifts whatsoever caused by a filter.

This results in a wider and deeper stereo image then possible with a multiway system.

Building is relatively easy as the PVC tube is an easy material to handle.

Sensitivity = 92 dB/1 W/1 m

Impedance = 8 Ohm

Max. power = 35 Watt

Dimension = 16 cm diameter

30 cm height

We also developed a special 3 channel amplifier to be combined with two FR-1 loudspeakers and a passive subwoofer.

The Duke

The RMT model now is replaced by "The Duke". It now has a new "ring emitter" tweeter performing well up to over 40 kHz.

The four mid range units are replaced by a new "wide range" type.

The lower halve of the tube is isolated from the upper halve and it uses a down-firing subwoofer.

The filtering is improved and the terminals of the subwoofer and the upper two-way system are separated. So now it's possible to use bi-wiring or even bi-amping.

Sensitivity = 89 dB/1 W/1 m

Frequency range = 30 Hz - 45 kHz

Max power = 100 Watt

Impedance = 2 x 8 Ohm

Dimension = 16 cm diameter

120 cm height

tube loudspeaker "The Duke"

The Count

The AMT is replaced by the new "Count" model.

This loudspeaker now has a two-way system for frequencies above 50 Hz and a separate subwoofer for the lower frequencies.

A new type of "ring emitter" tweeter is added performing well to over 30 kHz.

The bottom part holds a separate subwoofer.

Sensitivity = 89 dB/1 W/1 m

Frequency range = 40 Hz - 35 kHz

Impedance = 2 x 8 Ohm

Max. power = 70 Watt

Dimension = 16 cm diameter

100 cm height

The PMT-II

One of our most populair designs is the "PMT" loudspeaker, shown at the left. PMT means "Poor Man's Tube", the kitprice is quite reasonable for this excellent loudspeaker. This design is made out of PVC tube with a diameter of 16 cm and it's 75 cm high. The filtering is done by a simple series filter of 6 dB/octave. The PMT is a "closed" box design which performs well, even with a small tube amplifier. The frequency response is 50 Hz - 22000 Hz and sensitivity is over 90 dB's. A simple 8 or 10 Watt amplifier will thus give a sufficient sound level. The stereo image of this loudspeaker is superb! The stage is wider than the position of the loudspeakers and it's depth goes tens of meters beyond (given a good recording).

As in all models the PMT also sports a protecting device to prevent the tweeter from being damaged at high volume levels.

The units are "shielded" so they don't disturb the picture when placed beside the TV.

Sensitivity = 89 dB/1 W/1 m

Max. Power = 40 Watt

Frequency range = 50 Hz - 22 kHz

Impedance = 8 Ohm

Dimension = 16 cm diameter

70 cm height

Tube Loudspeaker PMT-II

The Mini Tube

The Mini Tube is the smallest loudspeaker in our range. It has been designed to be used in a surround system. When doing so it may be connected to be used as a full range system without filtering the low frequencies.

The units are "shielded" so they don't disturb the picture when placed on or beside the TV.

Placement can be done on the bookshelves or on stands. The latter giving a better stereo and surround performance.

Hawk Tube Loudspeakers

The FR-1

The Duke

The Count

The PMT-II

The Mini Tube

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