KanexPro AP2DBL Mini Audio Amplifier with Mic Mixer User Manual
- June 6, 2024
- KanexPro
Table of Contents
KanexPro AP2DBL Mini Audio Amplifier with Mic Mixer
Introduction
The KanexPro Mini Audio Amplifier is a quarter-rack width digital amplifier
(Class D) with equalizer control and Mic mixer. It’s a simple yet powerful
device delivering 2×20 Watts@4Ohm default output with built-in volume/ bass
feature. It also supports dual mono-output with 2 stereo audio selectable
inputs. The Microphone mixer includes independent volume control with balance
switching. Supports balanced/ unbalanced signals.
This Mini Audio Amplifier is mainly used during lectures, house of worship
centers and various musical events where Mic mixing together with equalizing
audio is critical.
Features
- Fast switching audio amplifier
- 2×20 Watt@4Ohm as the default amplifier output
- Bridge connection supported by switching the amplifier to be 1x40Watt@8Ohm
- Supports Dual-mono output
- Built-in Microphone mixer (separately controllable)
- Line audio output, with volume controllable.
- MIC input supports 48V phantom power
- MIC port with balanced switching suppress
- Supports balanced/ unbalanced signals
- Supports Ducking power technology
- Ultra-low inrush current
- Two stereo audio inputs, switchable by button, remote or RS232.
- Volume/Bass/Treble controllable by buttons or RS232
- Optional control by IR remote
- Convection cooled, antistatic case design
- LED indicator, for power and operating status
- IR remote (optional) not included
- Internal Universal power adaptable (100-240 volt AC, 50/60Hz)
Specification
| Audio Input | Audio Output |
|---|
Input
| 2xstereo audio,
1xMIC
| ****
Output
| 1xamplifier,
1xstereo audio
Input Connector
| 2xRCA
1×3.5mm jack 1xcaptive screw connector,
| ****
Output Connector
| ****
1xcaptivescrew connector 1×3.5mm jack
Input
Impedance
| ****
10KΩ
| Output
Impedance
| 50Ω/stereo,
4~8Ω/Amplifier
Audio General
Frequency
Response
| ****
20Hz ~ 20KHz
| ****
CMRR
| ****
70dB@20Hz~20KHz
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| 2×20 Watts (4 Ohms)
Control Function
RS232
Control
| RS-232, 9-pin
female D
connector
| ****
Pin Configurations
| ****
2 = TX, 3 = RX, 5 = GND
IR Remote| Optional IR remote
TCP/IP
Control
| ****
TCP/IP controlled
NOTE: All nominal levels are at ±10%.
Audio Connection
Audio Output
Default output: 2x20Watt@4Ohm
The default output of amplifier is 2x20Watt@4Ohm, so user can connect the
amplifier output in the regular way. As the picture below:
Bridge connection: 1x40Watt@8Ohm
The AP2DBL 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:
Dual-mono output
The AP2DBL 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:
Microphone input
The microphone input of AP2DBL has three modes, and different modes use
different connections, as the picture below:
48V phantom power input
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 a condenser microphone can be connected to it.
MIC input
When the switch turns to “MIC”, the microphone input is used for connecting
with dynamic microphone. There are two different connections:
-
Unbalanced connection:
a) “╧” connects to ground, and “-” connects to signal.
b) “╧” connects to ground, and “+” connects to signal. -
Balanced connection: “+” connects to positive, “-” connects to negative and “╧” connects to ground.
LINE input
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:
-
Unbalanced connection:
a) “╧” connects to ground, and “-” connects to signal.
b) “╧” connects to ground, and “+” connects to signal. -
Balanced connection: “+” connects to positive, “-” connects to negative and “╧” connects to ground.
Buttons Control
The buttons provides the control of volume/EQ control and switching.
Audio switching
There are two switchable stereo audio inputs, one 2xRCA input, and one 3.5mm
jack input, switchable through the buttons as below:
Volume/EQ controlling
The buttons can control the line volume and MIC volume.
The buttons, and controlled up/down/mute will select the MIC Volume/LINE
bass/LINE treble by the function buttons. Please check the picture below:
For example, to turn up the line volume, you should select the “LINE” first, and then press the button “ ”.
RS232 Communication Protocol
| 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 Audio |
| 1A0. | Mute audio of MIC | Mute MIC |
| 2A0. | Mute audio of line out | Mute LIN |
| 0A1. | Unmute Audio | Unmute Audio |
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| A: 1 -> 1
Volume: 50
Bass: 04
Treble: 04
| Command | Function Description | Feedback Code |
|---|---|---|
| 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
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
- The letter inside bracket [ ] is the variable code, which is the changeable.
- The bracket [ ] is not included to the RS232 commands.
- Any dot “.” after the letters is part of the commands.
Example 1:
Switching the input 2 to the line out. We should send the RS232 command:
[2A1.] Example 2:
Turning up the volume of line audio. We should send the RS232 command: [603%]
Example 3:
Preset the MIC volume to “21” degree. We should send the RS232 command: [521%]
Example 4:
Checking the working status of PA2B. We should send the RS232 command: [600%]
Application Diagram
Panel Drawing
Warranty
A. Limited Warranty
KanexPro ™ warrants that (a) its products (the “Product”) will perform greatly
in agreement with the accompanying written materials for a period of 12 months
(1 full year) from the date of receipt and (b) that the product will be free
from defects in materials and workmanship under normal use and service for a
period of 1 year.
B. CUSTOMER REMEDIES
KanexPro’s entire liability and Customer’s exclusive remedy shall be, at
KanexPro option, either return of the price paid for the product, or repair or
replacement of the Product that does not meet this Limited Warranty and which
is returned to KanexPro with a copy of customers’ receipt. This Limited
Warranty is void if failure of the Product has resulted from accident, abuse,
or misapplication. Any replacement Product will be warranted for the remainder
of the original warranty period of 1 year, whichever is longer.
C. NO OTHER WARRANTIES
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, KANEX DISCLAIMS ALL OTHER
WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH
REGARD TO THE PRODUCT AND ANY RELATED WRITTEN MA- TERIALS. THIS LIMITED
WARRANTY GIVES CUSTOMERS SPECIFIC LEGAL RIGHTS. CUSTOMERS MAY HAVE OTHER
RIGHTS DEPENDING ON THE JURISDICTION.
D. NO LIABILITY FOR DAMAGES
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL KANEX BE
LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING WITHOUT LIMITATION, SPECIAL,
INCIDENTAL, CONSEQUENTIAL, OR INDIRECT DAMAGES FOR PERSONAL INJURY, LOSS OF
BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR ANY
OTHER PECUNIARY LOSS) ARISING OUT OF THE USE OF OR INABILITY TO USE THIS
PRODUCT, EVEN IF KANEX HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Brea, California KanexPro.com
MPN: AP2DBL
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