Audaphon Cherlen 12/18 dB floorstanding loudspeaker from K+T magazine 5/2015

Kit without housing, price per speaker

The Cherlen 12/18 dB is a 2-way high-end bass reflex floor-standing loudspeaker with Air Motion Transformer. It uses the excellent Audaphon AMT 1i as a tweeter and the outstanding Morel TSCM 634 woofer. Separation is done with 2nd and 3rd order filters. If you are worried that the sound will disintegrate with steep filters, we recommend Cherlen with a 6 dB crossover. The crossover consists of a 3rd order high pass (18 dB / octave) for the tweeter. A suction circuit smooths the high frequency response by 6 kHz. A second order low pass (12 dB / octave) is used for the woofer. A suction circuit smooths the low frequency response by 800 Hz The frequency response of the loudspeaker is very linear. The decay spectrum is almost flawless. The nonlinear distortions at low volumes (85 dB, 1 m) are below 0.2% above 600 Hz and remain below 0.6% even at higher levels (95 dB, 1 m).

Technical data:

• Impedance: 4 Ohm
• Sound pressure level (2.83V/1m): 86 dB
• Dimensions (HxWxD): 960 x 180 x 240 mm
• Frequency range (-8dB): 35 - 30000 Hz
• Crossover frequency(s): 2400 Hz
• Principle: bass reflex box

Highlights

• Audaphon AMT-1i
• Morel TSCM 634, one piece
• 2x bass reflex tube HP70, 68x160 mm, black
• Insulating fleece MT Bondum 800 (30 x 50 x 2 cm)
• 0.5x PE foam sealing strip, 5x2 mm, roll 7.5 m
• Insulating material Sonofil 100 x 35 cm for 20 liters
• Pole terminals PK31, one pair, gold-plated, red+black
• 3m speaker cable 2x1.5 mm2, transparent
• Pan screws 4x20 black, 8 pieces
• Construction plan for the kit the crossover components (right), to be assembled on a wooden board.
• Audaphon MKP CAP Superior 1.5 μF / 400 Vdc
• Audaphon MKP CAP Superior 6.8 μF / 400 Vdc
• Audaphon MKP CAP Superior 8.2 μF / 400 Vdc
• Audaphon MKP CAP Superior 12 μF / 400 Vdc
• Audaphon MKP CAP Superior 15 μF / 400 Vdc
• 2x Mundorf baked varnish air coil BL71, 0.22 mH/0.34 Ohm
• Mundorf baked varnish air coil BL140, 0.68 mH/0.23 Ohm
• Mundorf Feronite core coil, F50, 5.6 mH/2.41 Ohm
• Metal oxide resistor MOX10 2.7 Ohm (red-violet-gold)
• Metal oxide resistor MOX10 4.7 Ohm (yellow-violet-gold)
• Metal oxide resistor MOX10 3.9 Ohm (orange-white-gold)
• Metal oxide resistor MOX10 22 Ohm (red-red-black)