YORKVILLE CA12 Bedienungshandbuch PDF herunterladen (Seite 4)

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C O L I S E U M

Rear Panel

4. Bus Inputs

RCA connectors and a screw terminal strip are

provided to connect your mixer, stereo tuner/preamp,

CD player or other audio media device.

Note: use only one type of source.

5. Bus Outputs

These RCA connectors are simply

in parallel with the Bus Inputs and

enable you to interconnect the CA12

with another CA12 or amplifier.

Note: only the Input Bus signals

will be patched to Output.

The Following Applies to Each

One of the Zone Input Sections

6. Ch Line Input

These inputs allow connection of

sources directly to the individual

channels. This input allows stereo,

line-level source or two separate

mono audio sources. If you Bridge

the Zone’s pair of amplifiers into an 8-ohm

speaker circuit, use the Left input and connect a

mono source.

7. Line/Bus Button

Each Zone’s input source can be selected

using this switch. Depress the button to select

the audio program coming from the Bus

Input or leave it in the up position to use

the Zone’s Line Input.

8. Remote Volume Jack

Using a cable terminated with a

¼-inch mono phone plug, connect

your DC remote volume control

source (a potentiometer for example)

here. When connected, this feature

bypasses both front panel

controls for this Zone.

9. Limiter In/Out Button

The Limiter In/Out

button activates a

pre-set input limiter,

which helps reduce the level of accidental loud

noises and clipping distortion for each Zone

(both channels of each Zone).

10. Stereo/Bridge Button

For stereo, or dual-zone mono operation,

at 50 Watts per channel leave this in the

up position. To combine (i.e. Bridge) the

two into a 110-Watt mono amplifier,

depress the button. In Bridge

mode, the +4 ohm / +70V button

must be in the +4 ohm position

(depressed) to allow for the 8-

ohm speaker circuit, not 4-ohms!

In bridge mode, an amplifier

encounters a load that is about

one half of its actual value – a

4-ohm load would therefore be

2-ohms to a bridged amp and if

the amplifier isn’t designed to run

safely into such a low impedance

(which the CA12 is not) damage

may occur to the amplifier. We

do not recommend connecting a

70V speaker circuit while in Bridge

mode as the output will be at 140V

and the sound can be distorted.

11. +4 ohm / 70V Button

Leave this switch in the up position if you are

connecting 4-ohm or 8-ohm speaker circuit

(Stereo mode). Depress the button to connect a

70V speaker circuit.

12. Speaker Connections

Insert bare wire ends here and tighten the

retaining screws to secure properly.

For a stereo Zone or dual mono

Zones, connect the + and – system

leads from each Zone to one +4 ohm

and its adjacent – Neg terminal in the

L & R terminal groupings. In Bridge

mode, connect the + and – leads

from an 8-ohm speaker circuit (not

4-ohms – see Stereo/Bridge Button

section above) to each of the

+4 ohm terminals.

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