Cheap Trick CT 233 slim designer speaker with subwoofer as in Klang+Ton 6/07

CT 233 aus Zeitschrift K+T 6/2007
Technical data
The satellite:
- size without base
    (HxWxD): 100 x 10.4 x 18.4 cm
- impedance: 4 Ohm
- sensitivity (2.83V/1m): 87 dB
- crossover frequencies: 3 and 4 kHz
- frequency range (-8dB): 75-22 000 Hz
- speaker type: sealed cabinet, 2.5 way

The subwoofer:
- size (HxWxD): 33.8 x 29.8 x 39.8 cm
- impedance: 4 Ohm
- sensitivity (2.83V/1m): -
- crossover frequency: 100 Hz (adjustable)
- frequency range (-8dB): 30-120 Hz
- speaker type: bass reflex

The CT 233 is a slim 2 ½ way floorstander with subwoofer.

This slim column comprises the Mivoc HGH 258 FN-2 tweeter and the Mivoc WPN 80 for mid / bass (2 units) and bass (4 units).

The bass is supported by a subwoofer consisting of a Mivoc AWM 104 woofer and a Mivoc AM80 subwoofer module that is located at the back of the subwoofer. The driver radiates downwards. As spacers high quality Mivoc feet are being used.

The cabinet is designed using differently gauged wooden panels and is also a bit cramped in certain areas. Therefore, the included instructions by Klang+Ton should be followed closely.

Excerpt of the review by Klang+Ton 6/2007:
"Definitely, the two slim columns are not overpowering in any size room, and in our listening room they seemed to be a bit lost. Although quite a bit bigger, the subwoofer still fits into the overall picture and is certainly not to big or bulky for the satellites. After a few initial adjustments this trio really got cracking. And the fundamental sound is indeed not as slight as the columns' physical appearance. The high frequencies are precise and present, possessing a pleasantly direct sound. As the result the overall sound is quite punchy, further supported by the subwoofer. Three-dimensionality of this D'Appolito trio is exceptional, especially noticeable when listening to vocals. In general, one never has the impression that the sound in relation to the music material is compromised. On the contrary, the sound is by and large powerful and well balanced. The peak level of this set can be reached quite possibly, even with high pass filters in the satellites. The laws of physics cannot be outwitted despite a few tricks. But the CT 233 is more than adequate for all levels below party volume." ...
 
Our kit consists of:

The satellite
  • 1x Mivoc HGH 258 FN-2 tweeter
  • 6x Mivoc WPN 80 mid/bass drivers
  • 2 packs polyester fleece
  • 28 PAN screws 3.5 x 17 mm
  • 2 binding posts
    gold plated brass
  • sealing tape
  • 7 m cable 2 x1.5 mm2
  • the crossover components:
    see right column
  • Klang+Ton building instruction

  • 2x universal PCB's 150x115 mm
  • 0.68 mH air core coil, 1.0 mm
  • 0.33 mH air core coil, 1.0 mm
  • 0.22 mH air core coil, 0.7 mm
  • 2x 330 μF ELCO, etched
  • 10 μF ELCO non-etched
  • 22 μF ELCO non-etched
  • 3.3 μF MKP capacitor
  • 0.47 μF MKP capacitor
  • 1.0 Ohm MOX10 resistor (brown-black-gold)
  • 18 Ohm MOX4 resistor (brown-grey-black)
  • 12 Ohm MOX4 resistor (brown-red-black)
The subwoofer
  • Mivoc AWM 104 bass driver
  • Amplifier module Mivoc AM 80 MK II
  • 2 BR tubes BR50V
  • 8 Allen screws 5x30 mm
  • 16 screws PAN 3.5 x 17 mm
  • 4 Mivoc feet
  • Klang+Ton building instruction

Important note: The cut-out fort the bass reflex tube has to have a diameter of 60 mm (indicated are 55 mm for drainpipes sometimes available at hardware stores).

Price for CT 233 Satellite without cabinet per unit: - not available

Price for CT 233 Subwoofer without cabinet per unit: - not available

Cheap Trick CT 233 High-End

If you want to build this designer speaker with higher quality crossover components we recommend our high-end version, consisting of baked varnish coils and higher quality capacitors:
  • 3x Universal PCB 150x115 mm
  • 0.68 mH baked varnish air core coil, 1.0 mm
  • 0.33 mH baked varnish air core coil, 1.0 mm
  • 0.22 mH baked varnish air core coil, 0.7 mm
  • 2x 330 uF, each consisting of 4 capacitors in parallel:
      3x100 μF ELCO non-etched and 33 μF MKP capacitors
  • 10 μF MKP capacitor/400V
  • 22 μF MKP capacitor/400V
  • 3.3 μF Mundorf MKP capacitor
  • 0.47 μF Mundorf MKP capacitor
  • 1.0 Ohm MOX10 resistor (brown-black-gold)
  • 18 Ohm MOX4 resistor (brown-grey-black)
  • 12 Ohm MOX4 resistor (brown-red-black)

Price for CT 233 Satellite High-End without cabinet per unit: - not available

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