The Ch4 Manual (2.0E) contains safety instructions and technical specifications for the Ch4 product.
The Ch4 is a mid to high range loudspeaker and the skeletal version of the Ci4-TOP (C4-TOP) loudspeaker, using a coaxial array of two constant directivity horns with a 12-inch low frequency driver and a 2-inch exit compression driver. It is constructed from paint finished fibreglass reinforced plastic and weighs approximately 31 kg (68 lb).
The manual covers safety precautions, connections, operation with D12, E-PAC, and P1200A amplifiers, HFC and CPL controller settings, dispersion characteristics, technical specifications, cabinet dimensions, wiring, and the EU declaration of conformity.
| Frequency response (-5 dB) | 150 Hz - 18 kHz |
|---|---|
| Maximum sound pressure with D12 | 140 dB |
| Maximum sound pressure with E-PAC | 136 dB |
| Maximum sound pressure with P1200A | 138 dB |
| Input level (SPLmax) | +14 dBu |
| Input level (100 dB SPL / 1 m) | -21 dBu |
| Nominal impedance | 8 ohms |
| Power handling capacity (RMS / peak 10 ms) | 200 / 800 W |
| Nominal dispersion angle | 35° x 35° |
| Connections | 2x NL4 |
| Pin assignments | 1+ / 1- |
| Weight | 31 kg (68 lb) |
Only a d&b D12 or E-PAC amplifier in C4-TOP configuration, or a P1200A mainframe fitted with a C4-TOP controller module.
The nominal dispersion angle is 35° x 35°.
Up to two cabinets, or up to three in applications with low continuous levels and low ambient temperatures.
The Ch4 weighs approximately 31 kg (68 lb).