Yamaha CXS18XLF CXS18XLF CXS15XLF Owners Manual - Page 7

Connection Wiring Wire the plugs as shown below. Use cables specially designed for speakers. When using only the CXS itself, wiring to the 2+ and 2- contacts is unnecessary. When the signal to a full-range speaker, or the signal for cardioid mode are sent together over a single cable using the [OUTPUT] jack, make sure to also wire to the 2+ and 2- contacts. (See "Basic Setting Example" on page 8, and "Cardioid Mode Setup" on page 9.) When using only the CXS itself. 1+: SUBWOOFER+ 1-: SUBWOOFER- (2+: Unused) (2-: Unused) When using the [OUTPUT] jack. 1+: SUBWOOFER+ 1-: SUBWOOFER- 2+: FULL RANGE+ 2-: FULL RANGE- 1+: CARDIOID FRONT+ 1-: CARDIOID FRONT- 2+: CARDIOID REAR+ 2-: CARDIOID REAR- Parallel Connection of Speakers [INPUT/PARALLEL] jacks are connected inside in parallel. The first CXS can receive the signal from a power amplifier (hereinafter, "amplifier") by one of the [INPUT/PARALLEL] jacks, and route the signal to the second CXS from the rest of [INPUT/PARALLEL] jacks. When connecting CXS units in parallel, be sure to check the load impedance that the amplifier can drive with. The nominal impedance of one CXS is eight ohms, and the total impedance of two parallel CXS units is four ohms. In this case, the amplifier must be able to drive a speaker less than four ohm load impedance. From amplifier To next CXS Amplifier First CXS (impedance: 8 Ω) Second CXS (impedance: 8 Ω) Parallel connection (total impedance: 4 Ω)  Invalid connection NOTICE NEVER connect the multiple signals from the amplifier to the [INPUT/PARALLEL] jacks simultaneously. This creates a very dangerous short circuit, possibly resulting in amplifier malfunction. A channel Amplifier B channel CXS CXS series Owner's Manual 7