Advertisement
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.
The input 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 input is also provided with adjustable sensitivity of either 300mV or 1V.
Phantom power is also provided on the input XLR.
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
• Phantom power
• 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
www.redbackaudio.com.au
Redback® A 4230A/40A/50A PA Amplifiers
Operating Manual
A 4230A
30W Public Address Amplifier
A 4240A
60W Public Address Amplifier
A 4250A
100W Public Address Amplifier
Redback® Proudly Made In Australia
1
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Redback A 4230A
Summary of Contents for Redback A 4230A
- Page 1 Redback® A 4230A/40A/50A PA Amplifiers Operating Manual A 4230A 30W Public Address Amplifier A 4240A 60W Public Address Amplifier A 4250A 100W Public Address Amplifier 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.
- Page 2 Speakers fitted with a 100V line transformer may be connected. Always ensure that the toal load of the speakers does not exceed the rated output of the amplifier ie 333Ω minimum at 100V for the A 4230A (30W), 166Ω minimum at 100V for the A 4240A (60W) and 100Ω minimum at 100V for the A 4250A (100W). Other wise either the DC or mains fuse could blow or the fault led activate and the amp will shut down.
- Page 3 Check that the speaker type is correct for the output that you are using (ie. 100V line). Check for any short circuits on the speaker line and check the speaker line impedance. Note you must use an impedance meter for this such as Redback Q 2004 Impedance Meter.
- Page 4 Redback® A 4230A/40A/50A PA Amplifiers Continually Blows Fuses Make sure that the speaker line is not shorted. Check speaker types, ratings and if on correct output. Amplifier Keeps Cutting In & Out Make sure that there is adequate ventilation around the amplifier. Check the vent slots on the top and sides are not covered or blocked and the fan is functioning correctly.
Need help?
Do you have a question about the A 4230A and is the answer not in the manual?
Questions and answers