Rolls HR251 Manuel utilisateur

HR251 50 + 50 watt

Connection guide

Rolls Corporation

Salt Lake City, UT

9-21

Made in USA ww.rolls.com

What's in the box?

1 - Made in USA HR251

1 - 24V power supply PN KSU100

1 - This owners manual

Made in USA ww.rolls.com

To operate the HR251, properly connect

cables from a source to the RCA or XLR

channel inputs of the HR251. Connect

the HR251 outputs to speakers 4 Ohms

or higher impedance. Adjust the channel

level controls for the desired volume.

NOTE: THIS MANUAL ASSUMES THE

USER HAS A WORKING KNOWLEDGE

OF AUDIO ELECTRONICS, BALANCED

AND UNBALANCED CONNECTIONS,

AND PROPER SIGNAL LEVEL SET-

TING.

The HR251 is a dual channel, 50 watt,

power amplier designed for audio and

visual professional applications. An

FR4(V94-0) rated glass epoxy circuit

board and powder coated steel chassis,

make the HR251 a product that will last.

Inputs are stereo RCA and XLR at line

level. The HR251 has Plugable Phoenix

connectors for outputs.

CONNECTION: DESCRIPTION:

Power Amplier

SPECIFICATIONS:

Input Impedance: 10K Ohms RCA

10K Ohms XLR

Power Output: 50 Watts X 2 (4 Ohms)

Voltage Gain: 30 dB

Maximum Supply Voltage: 24 VDC

THD: .05% typical

EIN: 3 mV

E󰀩ciency: 87%

Input Sensitivity: 28 mV

Bandwidth: 20Hz - 25 kHz +/- 3dB

Size: 6.5" x 4" x 1.5"

Power switch and LED

power indicator.

RCA Stereo inputs.

Level control will

adjust channel level

outputs.

DC jack for

connection to

the included

Rolls KS100DU

power supply

Stereo XLR

Line level

inputs.

Outputs. Plugable Phoenix

connector for connection to

speakers.

MADE IN USA

www.rolls.com

HR251

2 Channel 50 + 50 Power Amp

OUTPUT

CH.2 CH.1

CH.2

CH.1

KS100DU

24V 4A

XLR BALANCED INPUTS RCA

HR251

WARNING: THE MINIMUM SPEAKER IMPEDANCE IS 4 OHMS EACH.

IF YOU CONNECT AND USE THE HR251 WITH A LOWER SPEAKER IMPEDANCE THAN 4

OHMS YOU WILL DAMAGE THE HR251 AND POSSIBLY OTHER EQUIPMENT THAT IS CON-

NECTED TO THE OUTPUTS.

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