Zenty ZT-199 User manual
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SAFETY PRECAUTIONS
To ensure the best from the product, please read all instructions carefully before using the device.
Save this manual for further reference.
⚫Unpack the equipment carefully and save the original box and packing material for possible future
shipment
⚫Follow basic safety precautions to reduce the risk of fire, electrical shock and injury to persons.
⚫Do not dismantle the housing or modify the module. It may result in electrical shock or burn.
⚫Using supplies or parts not meeting the products’ specifications may cause damage, deterioration
or malfunction.
⚫Refer all servicing to qualified service personnel.
⚫To prevent fire or shock hazard, do not expose the unit to rain, moisture or install this product
near water.
⚫Do not put any heavy items on the extension cable in case of extrusion.
⚫Do not remove the housing of the device as opening or removing housing may expose you to
dangerous voltage or other hazards.
⚫Install the device in a place with fine ventilation to avoid damage caused by overheat.
⚫Keep the module away from liquids.
⚫Spillage into the housing may result in fire, electrical shock, or equipment damage. If an object or
liquid falls or spills on to the housing, unplug the module immediately.
⚫Do not twist or pull by force ends of the optical cable. It can cause malfunction.
⚫Do not use liquid or aerosol cleaners to clean this unit. Always unplug the power to the device
before cleaning.
⚫Unplug the power cord when left unused for a long period of time.
⚫Information on disposal for scrapped devices: do not burn or mix with general household waste,
please treat them as normal electrical wastes.
(844) 200-1945 | [email protected] Page 5of 16 Copyright © Zenty AV
ZT-AP40 is a compact-size digital amplifier (Class-D) with 3 inputs (2 line in and 1 balanced MIC). It is
integrated with powerful functions, including bridge connection, dual-mono, EQ control, microphone
mixer etc.
It has a good application in different places, including classroom, small meeting room, lecture hall,
bar, pub etc.
⚫2x20Watt@4Ohm as the default amplifier output.
⚫Bridge connection function. User can switch the ZT-AP40 to be 1x40Watt@8Ohm by bridge
connection.
⚫Two stereo audio inputs, switchable by button, IR remote & RS232.
⚫Volume/Bass/Treble controllable by buttons IR remote & RS232.
⚫MIC port can support balance/unbalance signal, suppress the external noise effectively.
⚫Line audio output at 3.5mm jack, with volume controllable.
⚫Dual-mono function. User can sum up the stereo audio to two times mono audio.
⚫MIC mixer function. The microphone will be mixed to the line audio output and be controlled
separately.
⚫MIC input supports 48V phantom power, dynamic MIC and wireless MIC.
⚫Auto noise gate. It keeps detecting the audio and MIC input, will mute the output when there is no
input.
⚫Ultra-low inrush current, no need for power sequencing. This allows multiple ZT-AP40 to be
powered on simultaneously without overloading power circuits.
⚫Convection cooler, fan is not needed.
⚫Antistatic case design: providing good protection for long-term and stable performance.
•(1) x ZT-AP40 (The mounting ears and ZT-AP40 are as a whole.)
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•(2) x Pluggable Terminal Blocks
•(1) x RS232 Cable
•(1) x Power Adapter
•(1) x Power Cord
•(4) x Plastic Cushions
Notes：
•The IR remote and its battery are offered for charge separately.
•The IR receiver is also offered for charge.
•Please confirm if the product and the accessories are all included, if not, please contact with the
dealers.
The default output of amplifier is 2x20Watt@4Ohm, so user can connect the amplifier output in the
regular way. As the picture below
(844) 200-1945 | [email protected] Page 7of 16 Copyright © Zenty AV
The ZT-AP40 has the bridge connection, to double the output power at 1x40Watt@8Ohm. It will sum up
the input left channel and input right channel to be mono output, and the power is up to 40Watt.
The bridge connection is:
The ZT-AP40 also has the function of double-mono output. It can sum up the left and right channel, to
be the mono audio output. In this way, the both of the outputs are showing the same mono audio. The
connection is:
(844) 200-1945 | [email protected] Page 8of 16 Copyright © Zenty AV
The microphone input of ZT-AP40 has three modes, and different modes use different connections, as
the picture below:
When the switch turns to “48V”, the MIC input will provide a 48V phantom power. This is usually used
for power supply for condenser microphone, Connection is:
“+” connects to positive, “-” connects to negative and “╧”to ground.
Note: In this mode, only condenser microphone can be connected with.
When the switch turns to “MIC”, the microphone input is used for connecting with dynamic
microphone. There are two different connections:
1) Unbalanced connection:
“╧”connects to ground, and “-”connects to signal.
“╧”connects to ground, and “+”connects to signal.
2) Balanced connection: “+” connects to positive, “-” connects to negative and “╧”connects to ground.
When the switch turns to “LINE”, the microphone input is used for connecting with normal audio or
wireless microphone output. There are two different connections:
1) Unbalanced connection:
“╧”connects to ground, and “-”connects to signal.
“╧”connects to ground, and “+”connects to signal.
2) Balanced connection: “+” connects to positive, “-” connects to negative and “╧” connects to ground.
(844) 200-1945 | [email protected] Page 9of 16 Copyright © Zenty AV
The buttons provide the control of volume/EQ control and switching. The following content introduces
audio switching and EQ control in detail.
There are two switchable stereo audio inputs, one 2xRCA input, and one 3.5mm jack input, switchable
through the buttons as below:
The line volume and MIC volume can be controlled by the buttons.
The MIC Volume/LINE volume/LINE bass/LINE treble will be selected by the buttons, and controlled
up/down/mute by the function buttons. Please check the picture below:
(844) 200-1945 | [email protected] Page 11 of 16 Copyright © Zenty AV
Communication Protocol: RS232 Communication Protocol
Baud rate: 9600 Data bit: 8 Stop bit: 1 Parity bit: none
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Command
Function Description
Feedback Code
1A1.
Switching the audio to input
1
A: 1 -> 1
2A1.
Switching the audio to input
2
A: 2 -> 1
0A0.
Mute Audio of MIC and Line
out
Mute
1A0.
Mute audio of MIC
Mute MIC
2A0.
Mute audio of line out
Mute LIN
0A1.
Unmute Audio
Unmute
3A0.
Switch on Noise Gate
Gate On
4A0.
Switch off Noise Gate
Gate Off
600%
Checking the working status
A: 1 -> 1
Volume: 30
Bass: 00
Treble: 00
601%
MIC volume up
Volume of MIC: 51
602%
MIC volume down
Volume of MIC: 51
603%
Line volume up
Volume of LINE: 51
604%
Line volume down
Volume of LINE: 51
605%
Bass level up
Bass of LINE: 04
606%
Bass level down
Bass of LINE: 04
607%
Treble level up
Treble of LINE: 04
608%
Treble level down
Treble of LINE: 04
609%
Initialization, back to the
default setting
Init OK
5[x][x]%
Preset MIC volume, [xx]
arranges from [00] to [60].
61 degrees in total.
Volume of MIC: 50
7[x][x]%
Preset line volume, [xx]
arranges from [00] to [60].
61 degrees in total.
Volume of LINE: 50
(844) 200-1945 | [email protected] Page 13 of 16 Copyright © Zenty AV
8[x][x]%
Preset the bass level, [xx]
arranges from [00] to [08].
9 degrees in total.
Bass of LINE: 04
9[x][x]%
Preset the treble level, [xx]
arranges from [00] to [08].
9 degrees in total.
Treble of LINE: 04
Notice:
1: The letter inside bracket [ ] is the variable code, which is changeable.
2: The bracket [ ] is not included to the RS232 commands.
3: Any dot “.” after the letters is part of the commands.
Example 1:
Switching the input 2 to the line out, RS232 command is: [2A1.]
Example 2:
Turning up the volume of line audio, RS232 command is: [603%]
Example 3:
Preset the MIC volume to “21” degree, RS232 command is: [521%]
Example 4:
Checking the working status of ZT-AP40, RS232 command is: [600%]
Audio Input
Audio Output
Input
2 stereo audio,
1 MIC
Output
1 amplifier,
1 stereo audio
Input
Connector
2 RCA
1 3.5mm jack
1 pluggable
terminal block
(3P,3.81mm),
Output
Connector
1 3.5mm jack
1 pluggable
terminal block (4P,
5.08mm)
Input
Impedance
>10KΩ
Output
Impedance
50Ω/stereo,
4~8Ω/Amplifier
Audio General
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Frequency
Response
20Hz ~ 20KHz
CMRR
>70dB@20Hz~20
KHz
SNR
80dB at maximum
output
Bandwidth
20Hz ~ 25KHz
Stereo
Channel
Separation
>75dB@20Hz to
20KHz
THD + Noise
1%@1KHz,
0.3%@20KHz
at nominal level
Voltage Gain
32dB
Power
Output
2x20 Watts (4
Ohms)
Control Function
RS232
Control
3-hole phoenix
connector
Panel
Control
Optional button
control
IR Remote
Optional IR remote
(844) 200-1945 | [email protected] Page 15 of 16 Copyright © Zenty AV
Clean this unit with a soft, dry cloth. Never use alcohol, paint thinner, or benzine to clean.
If your product does not work properly because of a defect in materials of workmanship, our company
(referred to as “the warrantor”) will, for the length of the period indicated as below, “Parts and Labor
(5) Years”, which starts with the date of original purchase (“Limited Warranty period”), at its option
either (a) repair your product with new or refurbished parts, or (b) replace it with a new or a refurbished
product. The decision to repair or replace will be made by the warrantor.
During the “Labor” limited warranty period, there will be no charge for labor. During the “Parts”
warranty period, there will be no charge for parts. You must mail-in your product during the warranty
period. This Limited Warranty is extended only to the original purchaser and only covers products
purchased as new. A purchase receipt or other proof of original purchase date is required for Limited
Warranty service.
When shipping the unit, carefully pack and send it prepaid, adequately insured, and preferably in the
original carton. Include a letter detailing the complaint and provide a day time phone and/or email
address where you can be reached.
This Limited Warranty ONLY COVERS failures due to defects in material or workmanship, and DOES
NOT COVER normal wear and tear or cosmetic damage. The Limited Warranty ALSO DOES NOT COVER
damages which occurred in shipment, or failures which are caused by products not supplied by
warrantor, or failures which result from accidents, misuse, abuse, neglect, mishandling,
misapplication, alteration, faulty installation, set-up adjustments, mis-adjustment of consumer
controls, improper maintenance, power line surge, lightning damage, modification, or service by
anyone other than a Factory Service center or other Authorized Servicer, or damage that is attributed
to acts of God.
THERE ARE NO EXPRESS WARRANTIES EXCEPT AS LISTED UNDER “LIMITED WARRANTY COVERAGE”.
THE WARRANTOR IS NOT LIABLE FOR INCIDENTAL OR CONSEQUENTAIL DAMAGES RESULTING FROM
THE USE OF THIS PRODUCT, OR ARISING OUT OF ANY BREACH OF THIS WARRANTY. (As examples, this
excludes damages for lost time, cost of having someone remove or re-install an installed unit if
applicable, travel to and from the service, loss of or damage to media or images, data or other recorded
content. The items listed are not exclusive, but are for illustration only.) PARTS AND SERVICE, WHICH
ARE NOT COVERED BY THIS LIMITED WARRANTY, ARE YOUR RESPONSIBILITY.
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