Redback A 4861 User manual

Altronic Distributors warrants this product for one year from date of purchase from Altronics or its
resellers to the consumer. If this item is part of an installation or another product, please contact the
installer or supplier for your warranty.
During the warranty period, we undertake to repair or replace your product at no charge if found to be
defective due to a manufacturing fault. The warranty excludes damage by misuse or incorrect instal-
lation (i.e. failure to install and operate device according to specications in the supplied instruction
manual), neglect, shipping accident, or no fault found, nor by use in a way or manner not intended by
the supplier.
For repair or service please contact your PLACE OF PURCHASE.
If this item was purchased directly from Altronics please make a warranty claim by:
1. FOR MAIL ORDER CUSTOMERS (includes school and trade orders),
a) Ringing us on 1300 797 007 and quoting your tax invoice number.
b) Upon contacting Altronics, we will issue an R.A. (Return Authorisation).
As Altronics have a number of service agents throughout Australia,
a copy of the R.A. will be emailed, faxed or mailed to you with full instructions
of how and where to send the goods. The freight for shipping goods back to
Altronics for all repairs is at the customers expense.
c) A copy of the R.A. form, (or at the very minimum, the R.A. number) must
accompany the goods to effect the repair.
d) Altronics will pay the return freight to the customer where the warranty claim
has been accepted.
e) Please quote the R.A. number in any correspondence to us.
2. FOR OVER THE COUNTER PURCHASES to make a warranty claim,
please return the goods to us in any of our stores, with a copy of your
proof of purchase (tax invoice).
a) Upon leaving the goods at one of our stores, an R.A. number
will be issued to you.
b) Once repaired, you will be contacted, advising that the goods are ready to be
collected from the store.
It is at Altronics discretion as to whether the goods will be repaired or replaced (whilst under war-
ranty); and as to whether identical goods will be used to replace the item due to changes of models /
products.
Note: Under no circumstances should you attempt to repair the device yourself or via a non-au-
thorised Altronics service centre, as this will invalidate the warranty!
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You
are entitled to a replacement or refund for a major failure and for compensation for any other reason-
ably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the
goods fail to be of acceptable quality and the failure does not amount to a major failure.
Distributed by Altronic Distributors Pty. Ltd. Perth. Western Australia.
Phone: [phone] Fax: [phone]
altronics.com.au
®
Operating Instructions
200W Subwoofer Amplier
A 4861
A 4861 Subwoofer Amplier
• 200W into 4 ohms
• Stereo RCA input
• Speaker level input and outputs
• Adjustable phase and crossover frequency
• Volume level control
• 240V AC operation
Features

A 4861 Subwoofer Amplier A 4861 Subwoofer Amplier
Specications
Power Output 200W (RMS @ 4Ω)
Total Harmonic Distortion (THD) <1%(Rated power: 200W @ 4Ω)
Adjustable Low Pass Crossover 35Hz ~ 160HZ
Frequency Response 20Hz~20KHz +0/-2dB@ -3dB
Line Level Input Sensitivity 200mV
Phase Range 0 ~ 180°
AutoTurn-on Sensitivity 2mV @ 50 Hz
Trigger In 12VDC
Thermal Protection Yes
AC Input Voltage 115V or 230V
Dimension 200mm x160mm x 47.5mm (WxDxH)
Weight 1.32kg
• Do not expose this unit to water, mositure, or excessive humidity.
• Do not install or place this unit in a built-in cabinet, or other conned space without adequate
ventilation.
• To prevent risk of electrical shock or re hazard, due to overheating do not obstruct unit’s
ventilation openings.
• Do not install near any source of heat including other units that may produce heat.
• Do not place unit near ames.
• Only clean unit with a dry cloth.
• Unplug unit during lightening storms or when not used for an extended period of time. A
surge protector is strongly recommended.
• Protect the power cord from being walked on or pinched particulary at the plugs.
• Use unit only with accessories specied by the manufacurer.
• Refer all servicing to qualied personal.
Safety Instructions
TO REDUCETHE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SER-
VICEABLE PARTS INSIDE. REFER SERVICINGTO QUALIFIED SERVICE PERSONAL.
CAUTION
This 200W subwoofer amplier provides clean 200W Class D power with compact and a light-
weight design. Its tabletop design is compatible with many other popular electronic devices A 4860
amplier to have 2.1 channel sound systems.The ampler offers its owner the freedom to use a
stand-alone, high quality amplier to operate a subwoofer speaker.This amplier also provides au-
dio RCA line level inputs from any pre-amplier, receiver and amplier. And also features a stereo
speaker level input if you have a source that is only available as a speaker level signal.
Introduction Connection Diagram
A4860 A4861
A4860A4861
SpeakerSubwoofer
SpeakerSubwoofer
B
luetooth or Audio Input
Bluetooth or Audio Input
A4860 A4861
A4860A4861
SpeakerSubwoofer
SpeakerSubwoofer
Bluetooth or Audio Input
B
luetooth or Audio Input
Option 1: Line Level Input Connection
Option 2: Speaker leverl (High Level) Input Connection
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A 4861 Subwoofer Amplier A 4861 Subwoofer Amplier
Rear Panel
1. RCA INPUT: Accepts stereo or mono audio line signal.The amplier will turn ON when the
line audio signal is present.The amplier will go to Standby mode after 3 minutes without audio
signal and the Power LED on front panel will turn RED.
2. SPEAKER LEVEL OUT:The terminal will pass-through full-band speaker-level audio from an
amplier connected to the peaker Level IN.Connect to full band speakers appropriately rated for
the amplier connected to Speaker Level IN.The Volume knob on front panel does not affect the
Speaker Level OUT.
3. SPEAKER LEVEL IN:The terminal connects to the speaker level OUT on an amplier, and
pass-through full-band audio to the speaker Level OUT.The Speaker Level IN signal will also get
processed by the CROSSOVER, PHASE and VOLUME knobs and then output via the SUB OUT.
4.TRIGGER: 3.5mm Jack. When 12VDC voltage is applied to this jack from other amplier, AV
receiver or automatic control system, the amplier will turn on. When DC voltage is removed, the
amplier will go to Standby mode.
NOTE: UsingTRIGGER function, please press the POWER switch at ON position. When 3.5mm jack
plugs into the amplier, the Power LED will turn RED. And when 12VDC is applied to this jack, the
Power LED will turn GREEN.
5. SUB OUT: 2 PIN screw terminal. Connect to a passive subwoofer.
6. VOLTAGE SWITCH: Sets to properly AC voltage to 115V or 230V. Before apply the AC power to
this amplier, please make sure this switch is set at correct position.
7. AC POWER IN: For connecting the power cord.
Front Panel
1. POWER SWITCH:The front panel switch will manually turn the power on or off. POWER LED
GREEN:The amplier is turn on. RED:The amplier is in Standby mode.
2. PHASE: Adjusts the phase compensation from 0 to 180 degree for subwoofer location relative to
the main speakers. In most situations the PHASE should be left at 0 degree, but for the advanced
user it can be set either by ear or with the aid of measurement instruments
3. CROSSOVER: Adjusts the low-pass frequency from 35 Hz to 160 Hz.
When using the Left/Right inputs, the adjustment will allow you to properly integrate the subwoof-
er with the satellite or main speakers.
4. VOLUME: Adjusts the output level to Subwoofer to match the main speakers in the system.
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