Trends TA-10 User Guide
Section 3 Overview
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Stereo amplifier
Power amplifier
1. Power Indicator
2. Volume Controller – Turn clockwise to minimize the volume level and vice versa.
3. RIGHT Speaker Output – The negative (-ve) and positive (+ve) speaker
terminals of the RIGHT channel.
4. Audio Input – The audio signal input (LEFT/RIGHT) connects from audio source
(e.g. CD player) to the amplifier by the RCA audio cable.
5. LEFT Speaker Output – The negative (-ve) and positive (+ve) speaker terminals
of the LEFT channel.
6. Power ON/OFF switch – pull up to power on the TA-10 amplifier and pull down to
power off.
7. Power Supply Socket – Plug the bundled AC Adaptor to this socket to supply
power to this amplifier.
Trends TA-10 User Guide
Section 4 Advanced Features
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4.1 Offset the DC bias voltage of the speaker terminals
There are two blue adjustable potentiometers (Rt) for offsetting the DC bias voltage
between the positive (+ve) and negative (-ve) terminals of each channel. Offset this
DC bias voltage can enhance the purity of the sound and minimize the “pop” sound
when power on and off. The DC bias has been pre-set in factory. But after run-in for a
period, it would be slightly changed that the fine-tuning is needed.
Before you tune these, you need a screwdriver (take off the case), a small screwdriver
(turn the screw of the potentiometer) and a (digital) multi-meter to detect the DC bias
voltage.
1. Use screwdriver to take out the two top level screws in the front panel & another
two screws in the back panel. Then, open the upper case.
2. Power ON the amplifier.
3. Use the multi-meter to detect the DC voltage (200mV) between +ve & -ve
terminals of the RIGHT channel.
4. Turn the screw on the top of the LEFT (near the front panel) potentiometer by a
small screwdriver clockwise or anticlockwise until the voltage as close as to
±0mV.
5. Then, repeat step 3 and 4 for the LEFT channel by turning the screw on the top of
the RIGHT (near the back panel) potentiometer.
6. Power OFF the amplifier
7. Cover back the upper case and tighten the screws.
4.2 Configure as power amplifier (by-pass the volume control)
You can simply configure the amplifier as an integrated amp (with volume control
function) or as a pure power amp (no volume control function) by resetting the jumpers
in J2 as follows:
O O O O
O O O O
(integrated amp)
O O O O
O O O O
(power amp)
