A 4861 Subwoofer Amplifier
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 installation (i.e. failure to install and operate device according to specifications 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 warranty); 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-authorised 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 reasonably 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: (08) 9428 2199 Fax: (08) 9428 2198 altronics.com.au
®
A 4861
200W Subwoofer Amplifier
Operating Instructions
Features
• 200W into 4 ohms
• Stereo RCA input
• Speaker level input and outputs
• Adjustable phase and crossover frequency
• Volume level control
• 240V AC operation
A 4861 Subwoofer Amplifier
Introduction
This 200W subwoofer amplifier provides clean 200W Class D power with compact and a lightweight design. Its tabletop design is compatible with many other popular electronic devices A 4860 amplifier to have 2.1 channel sound systems. The amplfier offers its owner the freedom to use a stand-alone, high quality amplifier to operate a subwoofer speaker. This amplifier also provides audio RCA line level inputs from any pre-amplifier, receiver and amplifier. And also features a stereo speaker level input if you have a source that is only available as a speaker level signal.
Specifications
Power Output
Total Harmonic Distortion (THD)
Adjustable Low Pass Crossover
Frequency Response
Line Level Input Sensitivity
Phase Range
Auto Turn-on Sensitivity
Trigger In
Thermal Protection
AC Input Voltage
Dimension
Weight
200W (RMS @ 4Ω)
<1%(Rated power: 200W @ 4Ω)
35Hz ~ 160HZ
20Hz~20KHz +0/-2dB@ -3dB
200mV
0 ~ 180°
2mV @ 50 Hz
12VDC
Yes
115V or 230V
200mm x160mm x 47.5mm (WxDxH)
1.32kg
Safety Instructions
• 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 confined space without adequate ventilation.
• To prevent risk of electrical shock or fire 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 flames.
• 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 specified by the manufacurer.
• Refer all servicing to qualified personal.
CAUTION
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SER-
VICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONAL.
2
A 4861 Subwoofer Amplifier
Connection Diagram
A4860
Speaker
Bluetooth or Audio Input
Speaker
Subwoofer
A4861
Subwoofer
A4861
Option 1: Line Level Input Connection
Speaker
A4861
Subwoofer
Speaker
A4861
Subwoofer
Option 2: Speaker leverl (High Level) Input Connection
3
A 4861 Subwoofer Amplifier
Front Panel
A 4861 Subwoofer Amplifier
Rear Panel
1. POWER SWITCH: The front panel switch will manually turn the power on or off. POWER LED
GREEN: The amplifier is turn on. RED: The amplifier 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 subwoofer with the satellite or main speakers.
4. VOLUME: Adjusts the output level to Subwoofer to match the main speakers in the system.
1. RCA INPUT: Accepts stereo or mono audio line signal. The amplifier will turn ON when the line audio signal is present. The amplifier 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 amplifier connected to the peaker Level IN.Connect to full band speakers appropriately rated for the amplifier 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 amplifier, 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 amplifier, AV receiver or automatic control system, the amplifier will turn on. When DC voltage is removed, the amplifier will go to Standby mode.
NOTE: Using TRIGGER function, please press the POWER switch at ON position. When 3.5mm jack plugs into the amplifier, 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 amplifier, please make sure this switch is set at correct position.
7. AC POWER IN: For connecting the power cord.
4 5
