Monoprice PID 11498 Bedienungsanleitung
SAFETY WARNINGS AND GUIDELINES
For best results, please thoroughly read this manual prior to use, paying particular
attention to the warnings in this Safety section:
•Do not expose this device to water or moisture of any kind. Do not place objects
containing liquid on or near this device.
•Do not expose this device to fire or other heat sources. Do not install it on or near
heat sources, such as ventilators, radiators, or near a fireplace. Do not place
objects with open flame, such as lit candles, on or near this device.
•This device contains no user-serviceable parts. Do not open or attempt to modify
this device.
•Use only the included AC power adapter or an exact replacement (24 VDC,
1.5A).
•Take care to ensure that the power cord does not get crimped, kinked, pinched,
stepped on, or otherwise damaged. Take care that the cord cannot be a trip/fall
hazard.
•When unplugging connections, always grasp the connector head. Never pull on
the cord or wires.
•Never connect speakers rated for less than 4-ohms to the amplifier in stereo
mode. Never connect a speaker rated for less than 8-ohms to the amplifier in
bridged mono mode.
OVERVIEW
This compact and powerful amplifier is packed with advanced features, yet is rugged
enough for commercial environments where a 100% duty cycle is required.
It uses an efficient Class D amplifier design, occupies little space, and requires no
ventilation. It provides either 20-watts (RMS) of power into two channels or 40-watts
(RMS) in bridged mono mode. It accepts two line level inputs and features an internal
Bluetooth receiver as a third input. A switchable limiter provides protection against
distortion and clipping when used near full output, while the switchable contoured
loudness circuit boosts low- and high-frequency signals at lower volume levels. A 9-pin
RS-232 serial interface allows the amplifier to be controlled using a PC.
For best results, please thoroughly read this manual prior to use. Keep this manual in a
safe place for future reference.
FEATURES
•Bluetooth receiver for wireless audio from portable devices
•Bluetooth connectivity with a built-in microphone for hands free communication
with portable phone
•3.5mm stereo line level input
•RCA stereo line level input
•Signal limiter prevents distortion and clipping
•Contoured loudness circuit boosts low- and high-frequency signals at lower
volume levels
•Electronic control of BASS, TREBLE, VOLUME, and BALANCE
•Selectable stereo or bridged mono operation
•12 button IR remote control
•Easy push speaker grip terminals
•Removable Bluetooth antenna with RP-SMA connector
SPECIFICATIONS
Power Output: 20 watts (RMS) per channel into 4 ohm loads
Frequency Response: 20Hz to 20kHz (-3dB)
Signal to Noise Ratio: -95dB @ 1kHz (4 ohms)
Input Sensitivity: 330mV (17W 4-ohms)
Input Impedance: 10 kilohms
Power Requirement:24VDC, 1.5A (AC Adapter included)
Dimensions (HxWxD): 1-7/8" x 5-5/8" x 4-3/4", including knobs and connectors
PACKAGE CONTENTS
After receiving the product, please inventory the contents to ensure you have all the
proper parts, as listed below. If anything is missing or damaged, please contact
Monoprice Customer Service for a replacement.
1x 20-watt per channel amplifier
1x IR remote control
1x AC power adapter
IR REMOTE CONTROL
The included IR remote control provides convenient access to most functions found on
the front panel of the amplifier.
Source Selection: LINE1, LINE2, Bluetooth
Mute: ON/OFF
Power: ON/OFF
Treble: UP/DOWN
Bass: UP/DOWN
Balance: LEFT/RIGHT
CONTROLS AND CONNECTIONS
Front Panel
Stereo/Bridge: Selects stereo or mono bridged operation. In bridged mode, the
amplifier provides one 40W RMS output channel, capable of driving an 8-ohm
load.
Source: Pressing this button toggles between LINE1, LINE2, and BLUETOOTH
sources, as indicated by the LED indicators directly above the button.
Select: Press this knob to select VOLUME, BASS, TREBLE, or BALANCE. The LEDs
above the knob indicate the current selection. Turn the knob to adjust the level of
the selected function.
Bluetooth: Press this button to perform Bluetooth functions. See the Bluetooth section
below for details.
Power: Pressing this button toggles the unit ON and OFF.
Rear Panel
RS-232: For connection of an external serial control device, such as a PC
Antenna: For connection of the included Bluetooth antenna. NOTE: Use extreme care
in handling this delicate antenna.
DIP Switches:
Loudness: Boosts high and low frequency signals at low volume levels. The
effect of this diminished as the volume setting is increased. Once the
volume reaches 70% of maximum, this control has no effect.
Limiter: Automatically reduces input sensitivity as the amplifier approaches its
maximum output level. This prevents distortion and clipping when the amp
is used near full output. Because this does tend to reduce the overall
dynamic range, it is recommended that this not be used in high fidelity
applications.
Note: After changing the DIP switches, the amp must be temporarily unplugged
from its power source for the changes to take effect.
Line 1: Stereo 3.5mm TRS jack for connecting the headphone output of mobile devices.
Line 2: Left and right RCA jacks for connecting consumer audio devices, such as CD or
tape players, tuners, and other devices with RCA line level outputs.
Speaker Output: Easy push speaker grip terminals for connecting speakers. Normally
you would connect a single pair of 4- or 8-ohm speakers. However, because this
amp can drive 4-ohm loads, you can connect two 8-ohm speakers in parallel to
each output channel. To do this, simply insert two wires into each spring terminal.
BRIDGED MODE
This amplifier normally delivers a 20 watt output to each of two channels. However, it is
possible to "bridge" these two channels, thereby creating a single channel with 40 watts
output. This is useful in environments where maximum output power is desired and
stereo separation is unnecessary (such as in public address situations). Note that in
bridged mode, the amplifier can only drive an 8-ohm or larger load. Do not connect a
speaker rated for less than 8 ohms. With the amplifier powered OFF, slide the front
panel switch to the BRIDGE position. On the rear, connect the wire from a single
speaker to the RIGHT channel's negative (-) terminal and the LEFT channel (+)
terminal. The remaining two speaker output terminals will not be used.
BLUETOOTH CONNECTION
To connect your Bluetooth equipped mobile device to the amplifier, perform the
following steps:
1. With the amplifier powered ON, press the SOURCE button repeatedly until the BT
indicator lights.
2. When BT is selected, you will notice the red indicator above the BLUETOOTH
button blinking. The amplifier is ready to pair with your device.
3. On your mobile device, ensure that Bluetooth is enabled. Scan for nearby devices
and select the Monoprice AMP entry. On some devices you may be asked for a
passcode. Enter 0000 (four zeroes). On some devices you may need to manually
connect to the amplifier after pairing is complete. In some cases you may need to
press the Bluetooth button on the amplifier to connect.
4. To disconnect the pairing, press and hold the Bluetooth button for about 3
seconds. Once it is unpaired, the amplifier is ready to pair with another device.
PHONE CALLS
This amplifier is equipped with a built-in microphone, allowing you to use it as a hands-
free communications device:
To answer an incoming call, press the Bluetooth button.
To reject an incoming call, press and hold the Bluetooth button for about 3 seconds.
To hang up after completing a call, press the Bluetooth button.
RS-232 INTERFACE
Following are the control commands for the RS-232 interface:
1:9600.n.8.1
<CR>: Enter Key
<Esc>: Escape Key
<Space>: Space Key
2: Host respond prompt: PA>
3: Show All PA Status: Type: Now<CR>
4: Power On/Off control: Type:
Power<Space>On<CR>------Power On
Power<Space>Off<CR>------Power Off
Power<Space>Toggle<CR>------Power toggle control
5: Mute On/Off control: Type:
Mute<Space>On<CR>-------Mute On
Mute<Space>Off<CR>-------Mute Off
Mute<Space>Toggle<CR>-------Mute toggle control
6: Volume control:
Type: Volume<Space>xx<CR>----Volume xx (xx range 0-79)
7: Source control:
Type: Source<Space>x<CR> x=1/2/3
8: Treble control:
Type: Treble<Space>xx<CR>-----xx :Treble control (+7 0 -7)
9: Bass control:
Type: Bass<Space>xx<CR>-------xx :Bass control (+7 0 -7)
10: Balance control:
Type: Balance<Space>xx<CR>----xx :Balance control (L9 0 R9)
11: Save memory now:
Type: Save<CR>----stores all current setting other than power on/off status
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