Monacor CT 264 floorstanding loudspeaker in K+T 1/2013

Kit without housing price per speaker

The Cheap Trick CT 264 is a 2-way transmission line box. Oliver Martin uses a Monacor DTM-104/8 tweeter and a Monacor SPM-165/8 woofer in it. The housing is easy to assemble; it only consists of small boards sawn at right angles, one of which is inside the box to form the transmission line. CT 264, also affectionately known as "flea in the ear" or "FiO" for short, contains a 2-way crossover. This has a 2nd order low pass and a 3rd order high pass. The frequency response has a slight dip between 5 and 7 kHz, but is otherwise quite flat.

Technical data:

• Impedance: 12 Ohm
• Sound pressure level (2.83V/1m): 85 dB
• Dimensions (HxWxD): 924 x 200 x 370 mm 
• Frequency range (-8dB): 35 - 21000 Hz 
• Crossover frequency(s): Hz
• Principle: Transmission line box

Highlights

• Monacor Tweeter DTM-104/8
• Monacor bass speaker SPM-165/8
• PE foam sealing strip, 5x2 mm
• Insulating material Sonofil 100 x 35 cm for 20 liters
• 0.5x convoluted foam panels N25 100x50x4cm anthracite/black
• Terminal T80 AU (80 mm rectangular)
• 2m speaker cable 2x1.5 mm2, transparent
• Pan screws 3.5x17 black, 4 pieces
• Pan screws 4x20 black, 4 pieces
• Construction plan for the kit the crossover components (right), to be assembled on a wooden board.
• 2x Audaphon MKT capacitor 6.8 μF / 160 Vdc
• Audaphon MKT capacitor 8.2 μF / 160 Vdc
• 0.7 mm air coil, 0.33 mH/0.48 Ohm
• 1.0 mm air coil, 2.2 mH/0.89 Ohm
• Metal oxide resistor MOX10 6.8 Ohm (blue-gray-gold)