A4255A

$789.00 per ea

Quantity Price
ea $789.00
2+ $745.00
per ea
Packaging
All prices shown are (inc. GST)

Overview

These compact 1RU rack mount amplifiers are suitable for both stand alone PA system use, or as zone amplifiers in larger systems requiring local inputs. All models operate on 240V ac or 24V dc for battery backup operation. All models include a choice of six source options on 2 inputs. Input one consists of a 3-pin XLR which can be set for either balanced mic level (3mV) or balanced line level (2V), adjusted via a rear mounted trimpot. A dual RCA is also provided on input one with adjustable sensitivity of either 300mV or 1V. Input two consists of three sets of dual RCA sockets on the rear panel and a 3.5mm jack on the front panel. Auxiliary source inputs are selected via the front panel switch. Input one can be DIP switch selectable to VOX mute input two.

Phantom power is also provided on input one XLR. Volume level controls are provided on the front panel for inputs one and two. The circuit includes protection features in case of output over voltage, over current and over temperature. All are self re-setting once the fault condition is removed. Visual indication via front panel LEDs display amplifier status at all times.

Features

  • Compact 1RU 19” rack mount design
  • Balanced mic or line input
  • 100V line output
  • VOX muting
  • Phantom power
  • Four auxiliary inputs
  • 3.5mm Jack Input (Front Mounted)
  • Overload limiting
  • Over voltage limiting
  • On demand fan cooling (60W and 100W versions only)
  • Over temperature shut down protection
  • Dual input connectors
  • Variable input sensitivities
  • 240V AC / 24V DC operation
  • Australian designed & manufactured


100% developed, designed & assembled in Australia.
Since 1974 Redback PA products have been manufactured in Perth, Western Australia by Altronics. With over 50 years experience in the commercial audio industry, we offer consultants, installers and end users reliable products of high build quality with local product support. Read more about our Australian Made products


Backed by an industry leading 10 Year Manufacturer Warranty.
Our Redback products have a long tried and tested history of bulletproof reliability. Altronics offers a 10 Year Warranty on all Australian Made Redback products. Our local in-house service department has all the know how to answer technical queries and provide timely service. Read more about our industry leading warranty.

Information & Downloads

Specifications

  • Power Outputs
  • A 4255A: 100 watts RMS
  • Distortion: < 0.5%, @ 1kHz
  • Frequency Response
  • Mic input: 50Hz - 12kHz, -3dB
  • Line input: 50Hz - 15kHz, -3dB
  • Sensitivity
  • Mic input: 3mV-2V balanced
  • Line input: 300mV-1V
  • Aux inputs: 300mV - 1V
  • 3.5mm input: 600mV
  • Signal to noise ratio
  • Mic input: > 75dB below rated output
  • Line input: > 81dB below rated output
  • Output Connectors
  • Speakers: Screw terminals (100V line)
  • Input Connectors
  • Inputs 1: 3 pin XLR balanced or 2 x RCA
  • Input 2: 3 x RCA and 3.5mm Jack
  • 24V DC power: Screw terminals
  • 240V AC power: IEC power connector
  • Size & Weight
  • Dimensions: ≈ 483W x 210D x 44H
  • Weight: ≈ 6kg
    • *Specifications are subject to change without notice.

Warranty & Returns

10 YEARS

We offer 10 years warranty on this product from its date of purchase. This is available from Altronics stores, online purchases or Altronics resellers. In accordance with our full warranty terms we will repair, replace or refund if goods you have purchased from us are defective.

30 DAY MONEY BACK GUARANTEE

Not withstanding our warranty policy, if you are dissatisfied with our goods or service you may return the goods within 30 days of our despatch date. Simply contact us for a return authorisation number and we will refund your purchase in full, less transport costs on receipt of goods. All returned goods must be in as sold condition including all packaging, instructions, invoices etc.