Celeste Koax is a two way compact speaker.
Celeste Koax is a bass-reflex cabinet loudspeaker with drivers of Celestion .
The kit is delivered with the following drivers:
- a Celestion TF1225CX coaxial driver
The loudspeaker has been developed by Bernd Timmermanns.
The crossover consists of:
- a 3rd order high-pass filter (18 dB per octave slope) for the tweeter.
- a 2nd order low-pass filter (12 dB per octave slope) for the woofer part of the coax loudspeaker.
The frequency response of this speaker is nearly linear.
The decay spectrum (waterfall spectrum) shows a decelerated swing-out behaviour in the mid-range.
At medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0,9% above 200 Hz.
the crossover components (right),
to be mounted on a small wooden board.
Kit without cabinet, price per speaker - not available
The high-end kit is delivered with baked varnish air core coils on important parts of the crossover for minimizing microphonic effects. - The current flow through the coil creates a magnetic field which sets the reel of wire in motion. This motion induces a voltage in the coil which adds itself to the signal. The stiffer the reel of wire is, the less the signal will be altered. The capacitors for the Celestion TF1225CX, where high quality is required, are of type polypropylen (MKP) Mundorf EVO Öl 450 V.
Kit with high-end-crossover without cabinet, price per speaker - not available
If you want to use a valve amplifier with this speaker an impedance correction should be employed. In this case the component quality is less important; therefore, we offer only one kit (upon request higher quality components are available).
Price per impedance correction for one speaker, to be mounted on a small wooden board. EUR 35,40 excl. VAT: € 29.75 / $ 35.10
If you prefer to mount the crossover components on a 240 x 165 mm universal PCB instead on wood:
Universal PCB RA240, order no.. str-RA240, price per unit: EUR 8,60 excl. VAT: € 7.23 / $ 8.53
We recommend one board per kit (two boards for a speaker pair)
If you prefer to mount the crossover components on a 159 x 127 mm universal PCB instead on wood:
Universal PCB RA160, order no.. str-RA160, price per unit: EUR 5,90 excl. VAT: € 4.96 / $ 5.85
We recommend a half board per kit (one board for a speaker pair)
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