This Owner's Manual covers the Yamaha CX-830 and CX-630 Control Amplifiers, detailing their features such as continuously variable loudness control, independent rec-out selector, and multiple audio and video inputs. The CX-830 includes 8 audio inputs, 3 video inputs, and a programmable remote control transmitter, while the CX-630 features 6 audio inputs and 2 video inputs.
The volume control should be set to the lowest level, which is fully counterclockwise, before switching the power on.
Pressing the MUTING key on the remote-control transmitter mutes the sound level by 20 dB.
The CX-830 model requires two 'AA' batteries and the CX-630 model requires two 'AAA' batteries.