ci PC-4 MKII User manual

PC●4 MKII Passive Line Controller
Thank you for purchasing the PC●4 MKII Passive Controller.
Design
PC●4 was designed with the audio purist in mind, a minimalist design utilizing the highest quality parts
to yield unmatched transparency.
Similar to previous VPC models, the audio path is completely passive, passing only through an input
switch and potentiometer. For PC●4, we sought only the highest grade components… Cardas Input &
Output jacks, Grayhill hermetically sealed switches with gold over copper contacts, and laser-trimmed
ALPS Blue Velvet potentiometer. Improved layout and 2 layer/3 oz. copper circuit board with improved
layout, all housed in a heavy machined aluminum chassis.
Please read the Configuration section of this document before installing into your playback system.

Configuration
On the rear panel, there are two pair of stereo INPUTS (1 & 2), and two pair of stereo outputs.
Connect your sources to the inputs. Connect your main amplifier to OUTPUT 1.
Output 2 can be configured for FIXED or VARIABLE operation (see diagram below).
When set to VARIABLE (default), the signal is sent through the volume control and functions
identically to OUTPUT 1. This can be used to feed a powered subwoofer or second amplifier.
When set to FIXED, the output is fed directly from selected input directly to OUTPUT 2,
bypassing the volume control. This can be used to feed a recording device or 2nd system.

To configure OUTPUT 2 for FIXED, you must first remove the circuit board from its chassis. To
disassemble, remove the 8 nuts & washers on the RCA jacks, and also the screw in between
them.
Then remove the 4 front panel screws. The assembly will now slide out from the front.
Move the 2 jumpers from pins 1-2 and place in positions 2-3.
Reassemble inreverse order.
Operation
Once all connections have been made, turn the volume control to minimum and the mute/play
switch to MUTE.
Turn on your amplifier and selectan active input.
Move the mute/play switch to PLAY and adjust the volume level to your liking, and enjoy the
music!
Inputs: 2
Outputs: 2
Potentiometer Value: 10k ohms
Dimensions: 4.50"W x 2.75"H x 6.75"D (including knob/jacks)
Weight: 4.0 lbs. (actual), 5.0 lbs. (shipping)
handcrafted in USA
Warranty
Your CIAudio Product is covered by our 5 yearParts & Labor Warranty.
Toobtain service, contact your dealer, distributor, or our factory.
Channel Islands Audio
567 W. Channel Islands Blvd., PMB 300
Port Hueneme, CA 93041 USA
Phone: [phone]
Email: [email protected]
Web: www.ciaudio.com