Monoprice 605030 Manuel utilisateur

300-Watt Studio Audio Amplifier

P/N 605030

User's Manual

2 
CONTENTS 
SAFETY WARNINGS AND GUIDELINES............................................................................................................................................3 
INTRODUCTION .....................................................................................................................................................................................................4 
FEATURES.................................................................................................................................................................................................................... 5 
CUSTOMER SERVICE......................................................................................................................................................................................... 5 
PACKAGE CONTENTS ...................................................................................................................................................................................... 6 
PRODUCT OVERVIEW...................................................................................................................................................................................... 6 
Front Panel .......................................................................................................................................................................................................... 6 
Rear Panel..............................................................................................................................................................................................................7 
STEREO OPERATION..........................................................................................................................................................................................8 
BRIDGED OPERATION...................................................................................................................................................................................... 9 
CONNECTOR WIRING.......................................................................................................................................................................................11 
BLOCK DIAGRAM................................................................................................................................................................................................13 
TECHNICAL SUPPORT ....................................................................................................................................................................................14 
SPECIFICATIONS.................................................................................................................................................................................................14 
REGULATORY COMPLIANCE................................................................................................................................................................... 15 
Notice for FCC................................................................................................................................................................................................ 15 
Notice for Industry Canada ............................................................................................................................................................... 16 
 
 
 

SAFETY WARNINGS AND GUIDELINES

Please read this entire manual before using this device, paying extra attention to these

safety warnings and guidelines. Please keep this manual in a safe place for future reference.

•This device is intended for indoor use only.

•Do not expose this device to water or moisture of any kind. Do not place drinks or

other containers with moisture on or near the device. If moisture does get in or on

the device, immediately unplug it from the power outlet and allow it to fully dry

before reapplying power.

•Do not touch the device, the power cord, or any other connected cables with wet

hands.

•Do not install this device on an unstable surface where it could fall and cause either

personal injury or damage to the device and/or other equipment.

•Do not subject the product to extreme force, shock, or fluctuations in temperature

or humidity.

•Do not expose this device to excessively high temperatures. Do not place it in, on,

or near a heat source, such as a fireplace, stove, radiator, etc. Do not leave it in

direct sunlight.

•This device ventilates excessive heat through the slots and openings in the case. Do

not block or cover these openings. Ensure that the device is in an open area where

it can get sufficient airflow to keep from overheating.

•Do not place or install this device in an area where it can be exposed to excessive

amounts of dust, humidity, oil, smoke, or combustible vapors.

•Use only in a well-ventilated area. Do not use in close, confined spaces.

•Prior to operation, check the unit and power cord for physical damage. Do not use if

physical damage has occurred.

•Before plugging the unit into a power outlet, ensure that the outlet provides the

same type and level of power required by the device.

•This device uses a grounded power cord and requires a ground connection for safe

operation. Ensure that the power source has a proper ground connection. Do not

modify the plug or use a "cheater" plug to bypass the ground connection.

•Disconnect the unit from the power source when replacing the fuse. Replace the

fuse only with the same type.

•Unplug this device from the power source when not in use.

•Take care to prevent damage to the power cord. Do not allow it to become

crimped, pinched, walked on, or become tangled with other cords. Ensure that the

power cord does not present a tripping hazard.

•Never unplug the unit by pulling on the power cord. Always grasp the connector

head or adapter body.

•Ensure that power is turned off and disconnected before making any electrical

connections.

•Clean using a soft, dry cloth only. Do not use chemical cleaners, solvents, or

detergents. For stubborn deposits, moisten the cloth with warm water.

•This device has no user serviceable parts. Do not attempt to open, service, or

modify this device.

INTRODUCTION

This 300-Watt Studio Audio Amplifier packs 300 watts of power into a compact form

factor, which takes up only 1U of rack space. It can be used as a stereo amplifier or can be

bridged for mono mode. In stereo mode it produces 150 watts per channel RMS (300 watts

per channel peak) into a 4-ohm load. It is stable when using reactive or mismatched loads,

so for example, you can connect a 2-ohm speaker to one channel and an 8-ohm speaker to

the other without any problems. It features an extremely flat 20Hz ~ 20kHz (+0, -1dB)

frequency response with less than 0.05% THD+N and more than 96dB signal-to-noise ratio.

Built-in protection circuitry includes full short circuit, open circuit, thermal, ultrasonic, and

RF protection. It also features a power on/off muting function to prevent popping in the

speakers when power is turned on or off. There is a selectable limiter, which serves as a

brick wall on volume to prevent high volume levels from driving the amplifier into clipping.

FEATURES

•Class D amplifier

•High current switching power for high power output, low noise, and low distortion

•Extremely flat 20Hz ~ 20kHz (+0, -1dB) frequency response with less than 0.05%

THD+N

•Balanced 1/4" TRS and XLR inputs

•Unbalanced 1/4" TS and NL4 speaker outputs

•Built-in optional limiter helps prevent clipping

•Short circuit, open circuit, thermal, ultrasonic, and RF protection

•Stable with reactive and mismatched loads

•Power on/off muting function

•Separate gain controls for each channel

•Signal and clipping LEDs for each channel

•Power and protection LEDs

•Bridgeable for high-power mono operation

•1U height

•Includes rack mount ears

CUSTOMER SERVICE

The Monoprice Customer Service department is dedicated to ensuring that your ordering,

purchasing, and delivery experience is second to none. If you have any problem with your

order, please give us an opportunity to make it right. You can contact a Monoprice

Customer Service representative through the Live Chat link on our website

www.monoprice.com or via email at su[email protected]. Check the website for

support times and links.

PACKAGE CONTENTS

Please take an inventory of the package contents to ensure you have all the items listed

below. If anything is missing or damaged, please contact Monoprice Customer Service for a

replacement.

1x 300-Watt Studio Audio Amplifier

1x AC Power Cord

PRODUCT OVERVIEW

Front Panel

1. POWER: The rocker switch turns the amplifier on or off.

2. CH1/CH2: Level control knobs allow independent volume control for each channel.

3. POWER LED: The LED illuminates blue when the amplifier is powered on.

4. SIG LEDS: Two LEDs, one for each channel, illuminate green when a signal is

detected.

5. PROT LED: The LED illuminates red when the amplifier is in thermal protection

mode. When thermal protection is active, the speaker system is disconnected from

each channel's amplifier. Once the amplifier has cooled sufficiently, the LED will turn

off and the speaker system will be reconnected to the amplifiers. To prevent the

thermal protection circuit from activating, improve cooling/ventilation and/or lower

the volume levels.

6. CLIP LEDS: Two LEDs, one for each channel, illuminate red when the amplifier is

clipping. Lower the volume levels until the LEDs no longer illuminate.

7. INTAKE VENT: The amplifier draws in cooling air through the vent on the front panel

and exhausts it through the vents on the rear and side panels.

Rear Panel

1. AC INPUT/FUSE HOLDER: Grounded panel connector for connecting the included

AC power cord. The fuse holder is inset in the lower half of the connector.

2. CH1 XLR INPUT: The XLR input accepts any balanced or unbalanced low impedance

line level source. The XLR jack is wired in parallel with the TRS jack to allow daisy

chaining this amplifier to another amplifier's input.

3. CH1 TRS INPUT: The 1/4" TRS input accepts any balanced or unbalanced low or high

impedance line level source. The TRS jack is wired in parallel with the XLR jack to

allow daisy chaining this amplifier to another amplifier's input.

4. CH2 XLR INPUT: The XLR input accepts any balanced or unbalanced low impedance

line level source. The XLR jack is wired in parallel with the TRS jack to allow daisy

chaining this amplifier to another amplifier's input.

5. CH2 TRS INPUT: The 1/4" TRS input accepts any balanced or unbalanced low or high

impedance line level source. The TRS jack is wired in parallel with the XLR jack to

allow daisy chaining this amplifier to another amplifier's input.

6. MODE: Use this button to select stereo or mono bridge mode. When in the STEREO

position, the channel 1 input connects to the channel 1 amp and the channel 2 input

connects to the channel 2 amp. When in the BRIDGE position, the channel 1 input is

connected to the mono bridged amps. See the

BRIDGED OPERATION

section for

more details.

7. CH1 NL4 OUTPUT: 2-pin NL4 unbalanced speaker output connector.

8. CH1 TS OUTPUT: 2-pin 1/4" TS unbalanced speaker output connector.

9. CH2 NL4 OUTPUT: 2-pin NL4 unbalanced speaker output connector.

10. CH2 TS OUTPUT: 2-pin 1/4" TS unbalanced speaker output connector.

11. LIMIT: Use this button to turn the built-in limiter on or off.

12. EXHAUST VENT: The amplifier draws in cooling air through the vent on the front

panel and exhausts it through the vents on the rear and side panels.

STEREO OPERATION

The amplifier can be operated as a standard, 2-channel stereo amplifier. To enable stereo

operation, the MODE button (6) on the rear panel must be set to the STEREO position (out).

When in stereo mode, each channel operates independently, with its own dedicated input

connectors, sensitivity level controls, signal indicator LEDs, automatic limiter, fault

protection circuitry, power amp, and speaker outputs. Stereo mode supports speaker loads

down to 2 ohms.

Following is a sample connection diagram for basic stereo operation.

BRIDGED OPERATION

The amplifier can be operated as a single, mono amplifier with more power than either

single channel in stereo mode. To enable mono bridged operation, the MODE button (6) on

the rear panel must be set to the BRIDGE position (in). When in mono mode, the amplifier

uses the CH1 input jacks and level control, although each channel retains its own

protection modes. Mono bridged mode supports speaker loads down to 4 ohms.

Unlike stereo operation, which uses each channel's output connectors to connect the

speakers, mono bridge operation uses a single pin from each output connector to connect

the speaker. When in mono bridged mode, connect the positive pin on the channel 1

output connector to the speaker's positive connection and the positive pin on the channel

2 output connector to the speaker's negative connection.

Following is a sample connection diagram for using a single 605030 amplifier for mono

bridged operation to drive a single speaker, such as a subwoofer.

Following is a sample connection diagram for using two 605030 amplifiers, each in mono

bridged mode, for stereo operation. Note that in this operating example, the second

amplifier's input is daisy chained to the first amplifier's inputs. The two input connectors for

each channel on the amplifier are wired in parallel to allow daisy chaining multiple

amplifiers.

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