CA12 - Audio Amplifier YORKVILLE - Free user manual and instructions

Product type	Multi-zone professional installation audio amplifier
Brand	YORKVILLE
Model	CA12
Power (4 ohms or 70 V)	50 W per channel (stereo) / 100 W bridged (8 ohms)
Power (8 ohms)	25 W per channel
Minimum impedance	4 ohms (stereo) / 8 ohms (bridged)
Frequency response	40 Hz - 20 kHz (+/- 3 dB)
Noise and hum	-97 dB
Number of channels	12 (6 stereo zones or 6 mono zones bridged)
Inputs	RCA and screw terminal (Bus), RCA and screw terminal (line)
Outputs	Speaker terminals (rear), Bus outputs (RCA)
Controls	Gain, Line/Bus selector, Limiter In/Out, Stereo/Bridged, +4 ohms/70V
Indicators	LED On/Clip (green/red), LED Power
Power supply	115 V/60 Hz or 230 V/50 Hz (switchable via selector)
Power consumption	Not specified
Dimensions (W x D x H)	43.5 x 43 x 8.5 cm
Weight	20.5 kg
Warranty	2 years (10 years for cabinet), transferable, valid in Canada and the United States
Maintenance and cleaning	Unplug before cleaning; use a dry soft cloth; do not expose to water or solvents
Safety	Do not open, do not expose to water, observe polarity, ensure adequate ventilation, use a stable support

Frequently Asked Questions - CA12 YORKVILLE

How to set up the CA12 for bridged mode operation?

To switch to bridged mode, press the corresponding Stereo/Bridged button for the desired zone. Use only an 8 ohm load (not 4 ohms) and connect the speakers to the left and right +4 ohms terminals. Adjust the level with the Left/Mono control.

What type of potentiometer to use for remote volume control?

Use a 50,000 ohm linear taper potentiometer. Connect it via a cable with a 1/4" mono plug following the diagram: tip to wiper, ring to top terminal of resistive element, sleeve to bottom terminal.

How to change the power supply voltage from 115V to 230V?

Before plugging in the unit, set the voltage selector on the rear to 230V. Also replace the T10.0AL/250V fuse with a T5.0AL/250V.

What does the red Clip indicator mean?

A red flash indicates clipping (distortion). Reduce the level of the affected channel to avoid damaging the speakers or amplifier.

How to select Bus or line input for a zone?

Use the Line/Bus button: pressed to select signal from the Bus input, released to use the individual line input of the zone.

Can I use 4 ohm speakers in bridged mode?

No, in bridged mode the equivalent load is halved. A 4 ohm speaker would become 2 ohms, which can damage the amplifier. Use only 8 ohm speakers in bridged mode.

How to daisy-chain multiple CA12 units?

Use the Bus outputs (RCA) of a first CA12 connected to the Bus inputs of the next. Only signals present on the Bus inputs are sent to the Bus outputs.

What is the recommended cleaning procedure?

Unplug the unit before any cleaning. Use a dry soft cloth. Do not use solvents, water, or abrasive products. Avoid liquid entering the inside.

What to do if the amplifier does not power on?

Check the power cord, mains outlet, and fuse. If the voltage selector is set to 115V while the outlet is 230V, this may damage the unit. Consult a qualified technician if the problem persists.

How to disable the limiter on a zone?

To disable the pre-set limiter on a zone, press the corresponding Limiter In/Out button so that it is in the released position (Out).

USER MANUAL CA12 YORKVILLE

IMPORTANT SAFETY INSTRUCTIONS

INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS

CAUTION:

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK).

NO USER SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

Read Instructions

The Owner's Manuals should be read and understood before operation of your unit. Please, save these instructions for future reference.

Packaging

Keep the box and packaging materials, in case the unit needs to be returned for service.

Warning

When using electric products, basic precautions should always be followed, including the following:

Power Sources

Your unit should be connected to a power source only of the voltage specified in the owners manual or as marked on the unit. This unit has a polarized plug. Do not use with an extension cord or receptacle unless the plug can be fully inserted. Precautions should be taken so that the grounding scheme on the unit is not defeated.

Hazards

Do not place this product on an unstable cart, stand, tripod, bracket or table. The product may fall, causing serious personal injury and serious damage to the product. Use only with cart, stand, tripod, bracket, or table recommended by the manufacturer or sold with the product. Follow the manufacturer's instructions when installing the product and use mounting accessories recommended by the manufacturer.

The apparatus should not be exposed to dripping or splashing water; no objects filled with liquids should be placed on the apparatus.

Terminals marked with the "lightning bolt" are hazardous live; the external wiring connected to these terminals require installation by an instructed person or the use of ready made leads or cords.

Ensure that proper ventilation is provided around the appliance.

No naked flame sources, such as lighted candles, should be placed on the apparatus.

Power Cord

The AC supply cord should be routed so that it is unlikely that it will be damaged. If the AC supply cord is damaged DO NOT OPERATE THE UNIT.

Service

The unit should be serviced only by qualified service personnel.

INSTRUCTIONS RELATIVES AU RISQUE DE FEU, CHOC ÉLECTRIQUE, OU BLESSURES AUX PERSONNES

AVIS:

AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE, N'ENLEVEZ PAS LE COUVERT (OU LE PANNEAU ARRRIERE)

NE CONTIENT AUCUNE PIECE REPARABLE PAR L'UTILISATEUR.

CONSULTEZ UN TECHNICIEN QUALIFIE POUR L'ENTRETIENT

CA12 Multi-Zone Professional PA Amplifier

Introduction

The CA12 is a major step forward in installation amplifier technology. Twelve mono Zone power amplifiers, featuring 85% class D design technology, can operate as 6 independent Zone amplifiers. Self-explanatory Input and Output connections are easy to follow since any of the 12 mono amplifiers can be connected to either 70-Volt, 8-Ohm or 4-ohm speaker circuits.

Each of the 12 mono amplifiers has their own input and output connectors and level controls. Up to 6 stereo Zones (4-ohm or 70-Volt at 50 Watts / channel), 6 mono/bridged Zone amplifiers (110 Watt bridged 8-ohm or 140-Volt). Each Zone can be configured independently allowing a combination of Stereo 4-ohm or 70 Volt and Mono/Bridged 8-ohm or 140 Volt Zones. Dual-function LEDs on the front panel provide both activity and Clip indication for each pair of amplifiers, which also have their own button-selectable Limiter; Stereo/Bridge modes and 4-ohm/70V modes are also selectable.

The Ch. Input Line/Bus switch selects between either the Bus Input (button depressed) or the individual Zone's Input signal. Additional features include: any amplifier with no signal at its input is automatically shut off and the CA12 is able to operate either on 120V/60Hz or 220V/50Hz AC mains.

Features and Functions

AC Mains. The CA12 comes configured to connect to 115V/60Hz mains. For use with 230V/50Hz mains set the rear panel Voltage Select switch to 230V (also, replace the T10.0AL/250V fuse with a T5.0AL/250V fuse).

Front Panel

1. Left/Mono and Right Controls

These controls regulate the level for each amplifier. For the Zones set up in Mono/Bridge mode only the Left/Mono Control will affect the level.

2. On/Clip LED

The individual channel's On/Clip LED will flash to indicate activity, flashing red will indicate clipping. Reduce levels if clipping is indicated (the LED does not indicate which Zone channel is clipping).

3. Power

This switch turns the AC mains On or Off.

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 1 / 4 -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.

Note: Use a 50,000 ohm B taper potentiometer. Connect the wiper

of the potentiometer to the tip of the stereo phone plug. Connect the ring of the stereo phone plug to the top of the potentiometer resistive element, and connect the bottom of the potentiometer resistive element to the sleeve of the stereo phone plug. The tip, ring, and sleeve electrical circuits must remain isolated from any other ground or electrical connection.

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.

Power @ min. impedance (Watts) 50W / ch. (4 ohm or 70 V; 25 W / ch. (8 ohm)

100W (8 ohms BRIDGED)

Minimum Impedance (ohms)

4 ohms (8 ohms bridged)

Frequency Response (Hz +/-3dB) 40 Hz - 20 kHz

Hum and Noise (dB) -97 dB

Input Channels 12 (6 Stereo Zones)

Channel - inputs RCA / Terminal strip on Main Bus input

Channel - controls Gain

Input Sensitivity (mV) 650 mV

Line Out (type / configuration) Bus Output RCA

LED Indicators Power,Clip

External speaker output / location Terminal Strip (rear)

Dimensions (DWH, inches) 16.75 × 16.75 × 3.25

Dimensions (DWH, cm) 43.5 × 43 × 8.5

Weight (Ibs / kg) 45 / 20.5

Specifications

Yorkville's two and ten-year unlimited warranty on this product is transferable and does not require registration with Yorkville Sound or your dealer. If this product should fail for any reason within two years of the original purchase date (ten years for the wooden enclosure), simply return it to your Yorkville dealer with original proof of purchase and it will be repaired free of charge. This includes all Yorkville products, except for the YSM Series studio monitors, Coliseum Mini Series and TX Series Loudspeakers.

Freight charges, consequential damages, weather damage, damage as a result of improper installation, damages due to exposure to extreme humidity, accident or natural disaster are excluded under the terms of this warranty. Warranty does not cover consumables such as vacuum tubes or par bulbs. See your Yorkville dealer for more details. Warranty valid only in Canada and the United States.

Garantie Illimitée

Voice: [phone]

Fax: [phone]

Yorkville Sound 550 Granite Court Pickering, Ontario

Yorkville Sound Inc. 4625 Witmer Industrial Estate

Niagara Falls, New York 14305 USA

WEB: www.yorkville.com

Niagara Falls, New York

14305 USA

Voice: [phone]

Fax: [phone]

Quality and Innovation Since 1963

Printed in China

Manual-Owners-CA12-00-1v2 • Nov 30/2009