Audio Authority AMP-1235 Installation And Operation Manual

Installation and Operation

High Performance 12 Channel Amplier

Model AMP-1235

Features

• Thermal and short circuit protection

• Versatile input selection

• Variable gain for each channel

• Rack-mountable design

• Bridgeable speaker outputs for more power

• Selectable turn-on modes

• Heavy-duty construction

POWER MODE
SETTINGS

BUS INPUTS

TRIGGER
CONNECTIONS

BUS OUTPUTS

To reduce the risk of re or electric shock, do not expose this unit to rain or moisture.

The exclamation point symbol alerts users to important operating and

maintenance instructions in this booklet.

• Read this manual before installing or using this product.

• This product must be installed by qualied personnel.

• Do not open the cover—there are no user-serviceable parts inside.

• Do not expose this unit to excessive heat.

• Install only in dry, indoor locations.

• Do not obstruct the ventilation slots.

Warnings

2 Audio Authority AMP1235 User Manual

• Clean the unit only with a dry or slightly dampened soft cloth.

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.

115V

230V

230V-4A-250V
115V-8A-250V

FUSE VALUE
230V Replace with 4A-250V
115V Replace with 8A-250V

~115VA C 60Hz 1000 W
~23 0VAC 60 Hz 100 0W

Installation

Allow space for adequate ventilation.

Location

Place the AMP-1235 amplier on a solid surface or in an
audio/video equipment rack. Ampliers do produce heat

and the best way to insure long life of your equipment is to
provide adequate ventilation. Be sure to leave a minimum

of 3 inches clearance above and behind the amplier and
at least 2 inches to each side. If installed in a rack, active

thermal management (such as rack fans) is recommended.

INPUT SELECTOR

SWITCH FOR LEFT

CHANNEL, ZONE 5

BRIDGE
SWITCH

MANUAL GAIN CON-

TROL FOR RIGHT

CHANNEL, ZONE 5

3 inches above

2 inches

on each side

3 inches

at rear

FUSE

SPEAKER

LEVEL OUTPUT

Connections

Inputs

Use high quality RCA cables to connect sources to the amplier inputs. You may use the BUS 1 or BUS 2 inputs if one
source will be used in multiple rooms, or you may use the LINE IN input for each channel. Use the input selector switch

for each channel to select an input. Be sure to switch left and right channels to the same input where appropriate.

Low Level Outputs

The AMP-1235 amplier provides BUS 1 and BUS 2 outputs which allow multiple ampliers to be connected to the

sources of BUS 1 and BUS 2.

LINE LEVEL INPUT

FOR CH 10 OR RIGHT

CHANNEL OF ZONE 5

AC POWER

Audio Authority AMP1235 User Manual 3

Speaker Outputs

Each channel features a removable screw terminal speaker
connection for easy installation in tight spaces. The terminal can

accommodate up to 14 gauge stranded speaker wire.

Bridging

For more power each pair of channels on the AMP1235 amplier
can be bridged (see example diagram). With the power turned
off, set the bridging switch to the BR position. Next connect the

speaker wire to the positive (+) terminals of the Left and Right
speaker connector as shown in illustration. When channels are
bridged the left or lowered numbered channel’s controls (such
as VOLUME and BUS/LINE IN) are used.

Trigger Connections

If you wish to turn on the amplier via an external trigger

connect the source to the TRIGGER IN jack using a

3.5mm, tip positive plug. To trigger other devices using the

AMP-1235 as the trigger source use the TRIGGER OUT

jack. This provides a 12V DC (500mA max), tip positive

output.

Power Connection

The last connection made should be the AC power using a stan­dard IEC type power cord.

BRIDGED OUTPUT EXAMPLE

THIS CHANNEL’S

CONTROLS ARE

USED FOR BOTH

OBSERVE

CORRECT

POLARITY

WHEN

BRIDGING

CHANNELS

WIRE TO

SPEAKER

SWITCHED

IN BRIDGE

POSITION

Operation

Panel Indicator

The power LED under the power switch is red when AC
power is connected and the power switch depressed and

the amplier is in the standby mode. When the amplier is
turned on (by an audio signal in AUTO mode or external

trigger in TRIGGER mode) the LED changes to blue to

indicate the amplier is operating.

The Zone LEDs indicate the status of each zone, or pair

of channels. If a channel’s LED is off it is in standby mode.
If the LED is blue the channel is operating normally. If the
LED is red this may indicate that the amplier is in a protec­tion mode for either a short circuit on the speaker outputs
or thermal overheating. Find and correct the short circuit or
improve ventilation to correct the issue.

Power

The AMP1235 amplier can be turned on in three differ­ent ways using the POWER CONTROL switch on the rear
panel.

• ON: The amplier powers on any time the front power

switch is pressed.

• AUTO: The amplier powers only the channels on which

an audio signal is detected.

• TRIGGER: The amplier is controlled by an external trig-

ger source (3-30v AC or DC).

Gain

The output level of each channel can be ne tuned using

the gain control for each channel on the rear panel.

4 Audio Authority AMP1235 User Manual

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.

115V

230V

230V-4A-250V
115V-8A-250V

FUSE VALUE
230V Replace with 4A-250V
115V Replace with 8A-250V

~115VAC 60 Hz 100 0W
~230VAC 6 0Hz 10 00W

OUTPUT

INPUT

SWITCHER

BLU-RAY

PLAYER

CD CHANGER

HD DVR

SATELLITE

RADIO

Single Source Connection

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.

115V

230V

230V-4A-250V
115V-8A-250V

FUSE VALUE

230V Replace with 4A-250V
115V Replace with 8A-250V

~115VAC 60 Hz 100 0W
~230VAC 6 0Hz 10 00W

ZONE 1

OUTPUT

ZONE 2

OUTPUT

ZONE 3

OUTPUT

ZONE 4

OUTPUT

ZONE 5

OUTPUT

ZONE 6

OUTPUT

INPUT

SWITCHER

BLU-RAY

PLAYER

CD CHANGER

HD DVR

SATELLITE

RADIO

Multi-zone System Connection

Audio Authority AMP1235 User Manual 5

Specications

Output Power: 35 Watts/ch. into 8 ohms

50 Watts/ch. into 4 ohms

100 Watts/ch. bridged into 8 ohms

Input Impedance: 10k ohms

Frequency Response: 5Hz-65kHz

Distortion: .05% THD

Trigger Voltage: Input trigger: 3-30V AC or DC

Output trigger: 12V 500mA

Fuse: 115V replace with 4A-250V

230V replace with 8A-250V

Input Power Rating: ~120V AC, 60Hz, 1,000 Watts

Dimensions: 17”w x 5.5”h x 15”d

Weight: 28lbs

Audio Signal Type: Analog

3dB Bandwidth: 85KHz

Input Coupling: AC

S/N Ratio: 95dB

Min Load Impedance: 4 ohms

THD+Noise: .05%

Crosstalk: 85dB

Agency Approvals: ETL, FCC

AC Input Connector: IEC 3 Conductor

Warranty: One year, parts and labor

Accessories Included: AC power cord, manual

Rack mounting ears

Limited Warranty

If this product fails due to defects in materials or workmanship within one year from the date of the original sale to

the end-user, Audio Authority guarantees that we will replace the defective product at no cost. Freight charges for
the replacement unit will be paid by Audio Authority (Ground service only). A copy of the invoice from an Authorized

Reseller showing the item number and date of purchase (proof-of-purchase) must be submitted with the defective unit to
constitute a valid in-warranty claim.

Units that fail after the warranty period has expired may be returned to the factory for repair at a nominal charge, if not

damaged beyond the point of repair. All freight charges for out-of-warranty returns for repair are the responsibility of the

customer. Units returned for repair must have a Customer Return Authorization Number assigned by the factory.

This is a limited warranty and is not applicable for products which, in our opinion, have been damaged, altered, abused,
misused, or improperly installed. Audio Authority makes no other warranties either expressed or implied, including limitation
warranties as to merchantability or tness for a particular purpose. Additionally, there are no allowances or credits
available for service work or installation performed in the eld by the end user.

AMP1235 Serial Number

Custom Installer

Telephone Number

6 Audio Authority AMP1235 User Manual

NOTES:

Audio Authority AMP1235 User Manual 7

2048 Mercer Road, Lexington, Kentucky 40511-1071 USA

Phone: [phone] • Fax: [phone]

Customer Toll-Free USA & Canada: 800-322-8346

www.audioauthority.com • [e-mail]

E-093

12/09