T-SUB221A
1. Possible hearing damage
The device can produce volume levels that may cause temporary or
permanent hearing impairment. Over an extended period of time,
even levels that seem to be uncritical can cause hearing damage.
2.Power supply
Before connecting the device, ensure that the input voltage (AC outlet)
matches the voltage rating of the device and that the AC outlet is
protected by a residual current circuit breaker. Failure to do so could
result in damage to the device and possibly injure the user.
Unplug the device before electrical storms occur and when it is unused
for long periods of time to reduce the risk of electric shock or fire.
3.Risk of fire
Do not block areas of ventilation. Do not install the device near any
direct heat source. Keep the device away from naked frames.
4.Operating conditions
Only operate the device within the ambient conditions specified
in the chapter Technical specifications of this user manual. Avoid
heavy temperature fluctuations and do not switch the device
on immediately after it was exposed to temperature fluctuations
Since the interference affects both cores equally, by subtracting the
phase-shifted signals, the interfering signal is completely neutralized. The
result is a pure signal without any noise inter‐ference .
Unbalanced transmission is mainly used in semi-professional environment
and in hifi use.
Balanced and unbalanced transmission
Instrument cables with two conductors (one core plus shielding) are
typical representatives of the unbalanced transmission. One conductor is
ground and shielding while the signal is transmitted through the core.
Please note these advices, because especially in ‘Sound & Light’caution
is indicated: Even if a plug fits into the socket, an incorrect connection may
result in a destroyed power amp, a short circuit or ‘just’ in poor trans-
mission quality!
Introduction
Unbalanced transmission is susceptible to electromagnetic interference,
especially at low levels, such as microphone signals and when using long
cables.
In a professional environment, therefore, the balanced transmission is
preferred, because this enables an undisturbed transmission of signals
over long distances. In addition to the conductors ‘Ground’ and
‘Signal’, in a balanced transmission a second core is added. This also
transfers the signal, but phase-shifted by 180°
This chapter will help you select the right cables and plugs to connect your
valuable equipment in such a way that a perfect sound experience is
ensured.
3 Signal (out of phase, –)
4 Shielding on plug housing (option)
1 Ground, shielding
2 Signal (in phase, +)
XLR plug (balanced)
Caution:
Plug and connection assignment:
AD221A
Technical specications:
Dimensions(mm)：
Amplier instructions：
①
②
③
④
⑤
Control interface：connect PC via RJ45 interface，adjust sound
through software
LED Indicator for signal： This LED lights green when an input signal
Input XLR： XLR input signal connectors
Output XLR：XLR output signal connectors
LED indicator for power:This LED lights green when the unit is
turned on and the power supply voltage is present.
T-SUB221
AD221A A
is present
⑥
LED Indicator for signal： Yellow for clipping
⑦LED Indicator for signal： Red for overloading
⑧AC Power connector input and output：110V-240V 50Hz-60Hz
⑨Power Switch
Type：
SPL：
Frequency range：
Power
Input sensitivity
Signal input：
Signal output：
DSP interface：
：
Active double 21 inch subwoofer
148dB PEAK
[+/-3 dB] 25 Hz - 120 Hz
1 x XLR (Audio Input)
Nominal 0 dBu
2 x21” 8000W PEAK
1 x DSP setup rotary switch (10 presets)
1x XLR (Audio Link Out)
1240 x 600x 950 mm
115 kg
AD221A Amplier Technical Specications
AD221A Technical Specications:
：
AD221A Dimensions：
Dimensions(W x H x D)
Weight:
Powercon® Link
Amplifier type：
Operating voltage:
Power connector:
Distoration：
Output power：
<0.05%
Class-D
3800W+3800W/4Ω
110V-240V 50/60Hz
Powercon® Input
①
②
③
⑧
⑦
④
⑤
⑥
S/N :
SU B Woofer Active System
KEEP D RY
10 0V- 24 0V ~5 0/ 60H z
MA IN PO WER
IN PUT
OU TPU T
POW ER
ON
OFF
⑨
/
