Technical data
- impedance: 4 Ohm
- sensivity (2,83V/1m): 88 dB
- size (HxWxD): 292 x 492 x 272 mm
- frequency range (-8dB): 55 - 21000 Hz
- crossover frequency(s): 350, 3200 Hz
- speaker type: closed box
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CT274 is a universal compact speaker which should be used with subwoofer.
It contains Visaton tweeter, a Visaton mids and two Visaton woofer.
It is developed by Holger Barske und Thomas Schmidt.
The crossover is a 3-way-filter. It consists of a 2rd order high-pass filters (12 dB per octave slope) and 2nd order low-pass filters.
Our kit consists of
- Visaton dome tweeter SC 10 N, 8 Ohm
- Visaton W100 S, 4 Ohm
- 2x Visaton W170 S, 8 Ohm
- PE sealing tape, 5x2 mm
- 2,5x Damping Sonofil 100 x 35 cm for 20 litres
- Terminal T105 Au, with brass, gold plated
- 2,5m Speaker cable 2x1.5 mm2, transparent
- Pan screws 3.5x17 black, cross recess, 4 pieces
- Visaton Countersunk screws 3.5x25, 16 pcs
- Plan for DIY kit
the crossover components (right),
to be mounted on a small wooden board.
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- Audaphon MKP CAP Superior 3.3 μF / 400 Vdc
- ClarityCap PWA capacitor 18 μF / 160 Vdc
- 2x electrolytic capacitor, unetched, 100uF / 50 Vdc
- 0.7 mm air core coil, 0.68 mH/0.70 Ohm
- 1.0 mm air core coil, 0.47 mH/0.32 Ohm
- M core coil, 3.3 mH/0.27 0hm
- H core coil H71, 4.7 mH/0.46 0hm
- Metal-oxide resistor, 10W 2.7 Ohm [red-purple-gold]
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Kit without cabinet, price per speaker
EUR 290,00 excl. VAT: € 243.70 / $ 251.01
Kit with high-end crossover
In the kit with high end crossover two ClarityCap foil capacitors are used. Instead of electrolytic capacitors only foil capacitors are delivered.
In series to the mids speaker a baked varnish capacitor is used:
- ClarityCap ESA capacitor 3.3 μF / 630 Vdc
- ClarityCap PWA capacitor 18 μF / 160 Vdc
- 2x Audaphon MKT CAP 100 μF / 160 Vdc
- 0.7 mm air core coil, 0.68 mH/0.70 Ohm
- Mundorf baked varnish air core coil BL100, 0.47 mH/0.32 Ohm
- M core coil M12, 3.3 mH/0.27 0hm
- Mundorf H core coil H71, 4.7 mH/0.46 0hm
- Metal-oxide resistor, 10W 2.7 Ohm [red-purple-gold]
Kit without cabinet, price per speaker
on request
Impedance correction
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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).
- electrolytic capacitor, unetched, 10 μF / 70 Vdc
- 0.7 mm air core coil, 0.10 mH/0.27 Ohm
- Metal-oxide resistor, 10W 6.8 Ohm [blue-grey-gold]
Price per impedance correction for one speaker, to be mounted on a small wooden board.
EUR 8,70 excl. VAT: € 7.31 / $ 7.53
universal PCB
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 / $ 5.11
We recommend two boards per kit (four boards for a speaker pair)
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