PM 502
en | User manual
Table of contents
1
Safety 4
2
Quick overview 7
2.1 Shipping contents and warranty 7
3
System overview 8
4
Installation 9
5
Connection 10
5.1 Mains input 10
5.2 Audio inputs 10
5.2.1 Mono inputs (MIC/LINE) 10
5.2.2 Stereo inputs 11
5.3 Audio outputs 12
5.3.1 Speaker connection 12
5.3.2 Line level/USB 14
5.3.3 Headphone 15
5.4 Other connections 15
5.4.1 USB data storage 15
5.4.2 FX switch 15
6
Configuration 16
6.1 Phantom power 16
6.2 100 V Direct Drive 16
6.3 Amplifier routing 16
6.4 Speaker processing (LPN) 17
6.5 AUX mode 17
6.6 Locking 18
6.7 Microphone processing (TALK OVER) 19
7
Operation 20
7.1 Mono input 20
7.2 Stereo input 22
7.3 FX 23
7.4 AUX 24
7.5 MASTER 24
7.6 Microphone processing 24
7.7 Equalizer 25
7.8 Display 26
7.8.1 Menu 26
7.9 Indicators 30
7.10 Headphone volume 31
8
Maintenance 32
9
Technical data 33
9.1 Dimensions 37
9.2 Circuit diagram 38
10
Appendices 39
10.1 System examples 39
10.2 Pin assignments 43
PM 502 Table of Contents | en 3
Bosch Sicherheitssysteme GmbH User manual 15-May-14 | 02 | F01U297804
Safety
Danger!
The lightning symbol inside a triangle notifies the user of high-voltage, uninsulated lines and
contacts inside the devices that could result in fatal electrocution if touched.
!
Warning!
An exclamation mark inside a triangle refers the user to important operating and service
instructions in the documentation for the equipment.
1. Read these safety notes.
2. Keep these safety notes in a safe place.
3. Heed all warnings.
4. Observe all instructions.
5. Do not operate the device in close proximity to water.
6. Use only a dry cloth to clean the unit.
7. Do not cover any ventilation slots. Always refer to the manufacturer's instructions when
installing the device.
8. Do not install the device close to heaters, ovens, or other heat sources.
9. Note: The device must only be operated via the mains power supply with a safety ground
connector. Do not disable the safety ground connection function of the supplied power
cable. If the plug of the supplied cable does not fit your mains socket, please contact
your electrician.
10. Ensure that it is not possible to stand on the mains cable. Take precautions to ensure the
mains cable cannot become crushed, particularly near the device connector and mains
plug.
11. Only use accessories/extensions for the device that have been approved by the
manufacturer.
12. Unplug the device if there is risk of lightning strike or in the event of long periods of
inactivity. However, this does not apply if the device is to be used as part of an
evacuation system!
13. Have all service work and repairs performed by a trained customer service technician
only. Service work must be carried out immediately following any damage such as
damage to the mains cable or plug, if fluid or any object enters the device, if the device
has been used in rain or become wet, or if the device has been dropped or no longer
works correctly.
14. Please ensure that no dripping water or spray can penetrate the inside of the device. Do
not place any objects filled with fluids, such as vases or drinking vessels, on top of the
device.
1
4 en | Safety PM 502
15-May-14 | 02 | F01U297804 User manual Bosch Sicherheitssysteme GmbH
15. To ensure the device is completely free of voltage, unplug the device from the power
supply.
16. When installing the device, ensure that the plug is freely accessible.
17. Do not place any sources of open flame, such as lit candles, on top of the device.
18. This PROTECTION CLASS I device must be connected to a MAINS socket with a safety
ground connection.
Caution!
Use only manufacturer-approved carts, stands, brackets, or tables that you acquired together
with the device. When using carts to move the device, make sure the transported equipment
and the cart itself cannot tip over or cause injury or material damage.
IMPORTANT SERVICE INFORMATION
!
Caution!
This service information is for use by qualified service personnel only. To avoid the risk of
electric shock, do not perform any maintenance work that is not described in the operating
instructions unless you are qualified to do so. Have all service work and repairs performed by
a trained customer service technician.
1. Repair work on the device must comply with the safety standards specified in EN 60065
(VDE 0860).
2. A mains isolating transformer must be used during any work for which the opened device
is connected to and operated with mains voltage.
3. The device must be free of any voltage before performing any alterations with upgrade
sets, switching the mains voltage, or performing any other modifications.
4. The minimum distance between voltage-carrying parts and metal parts that can be
touched (such as the metal housing) or between mains poles is 3 mm, and must be
observed at all times.
5. The minimum distance between voltage-carrying parts and circuit parts that are not
connected to the mains (secondary) is 6 mm, and must be observed at all times.
6. Special components that are marked with the safety symbol in the circuit diagram (note)
must only be replaced with original parts.
7. Unauthorized changes to the circuitry are prohibited.
8. The protective measures issued by the relevant trade organizations and applicable at the
place of repair must be observed. This includes the properties and configuration of the
workplace.
9. Observe the guidelines with respect to handling MOS components.
Danger!
SAFETY COMPONENT (MUST BE REPLACED BY ORIGINAL PART)
Notice!
Due to line current harmonics, we recommend that you contact your supply authority before
connection.
PM 502 Safety | en 5
Bosch Sicherheitssysteme GmbH User manual 15-May-14 | 02 | F01U297804
Old electrical and electronic appliances
Electrical or electronic devices that are no longer serviceable must be collected separately and
sent for environmentally compatible recycling (in accordance with the European Waste
Electrical and Electronic Equipment Directive).
To dispose of old electrical or electronic devices, you should use the return and collection
systems put in place in the country concerned.
6 en | Safety PM 502
15-May-14 | 02 | F01U297804 User manual Bosch Sicherheitssysteme GmbH
Quick overview
Your PM 502 is designed so that you can easily set it up and start using it right away. Follow
the steps on the next few pages to set up your PM 502.
!
Caution!
Read all the instructions in this document and the safety notes starting on page 4 before you
plug your PM 502 into a power outlet.
Shipping contents and warranty
Quantity Component
1 PM 502
1 Power cord
1 User manual
1 Important safety instructions
Warranty
For information regarding the warranty, see www.dynacord.com
2
2.1
PM 502 Quick overview | en 7
Bosch Sicherheitssysteme GmbH User manual 15-May-14 | 02 | F01U297804
System overview
Front view
Rear view
3
8 en | System overview PM 502
15-May-14 | 02 | F01U297804 User manual Bosch Sicherheitssysteme GmbH
Installation
Always place the PM 502 on an even surface to allow for sufficient airflow during the
operation. The device is equipped with an electronically controlled fan to protect the power
amplifier against thermal overload. The direction of the airflow is right to left. Do not cover the
top and side ventilation slots, otherwise, the PM 502 will automatically reduce its output
power or it will go into protect mode to prevent thermal overload. If the PM 502 goes into
protect mode to help prevent damage to the product, regular operation will be suspended
until the product has cooled sufficiently to resume normal operation. Always ensure adequate
cooling and appropriate shade to keep the ambient temperature around the product within
the specified operating temperature range.
Notice!
Protection foil
Carefully remove the protection foil from the front panel before using the PM 502. Do not
remove any knobs from the front panel, the foil can be easily removed without having to
detach the knobs on the control surface.
Before connecting to the mains supply, please make sure that the device matches the voltage
and frequency of your local mains supply. Check the label on the back of the unit.
For a secure connection the speaker outputs CH 1/2 on the back panel of the PM 502 are
provided through professional standard high-performance speakON or Euroblock connectors.
Using the RMK 502 Rack mount kit
The RMK 502 Rack mount kit allows the PM 502 to be securely placed into a 19 inch rack,
desk or table without covering the ventilation slots. When installing the PM 502 into a rack,
please ensure sufficient ventilation. A minimum distance of at least 2 HU above the mixer and
1 HU below the mixer is the minimum space requirement.
!
Caution!
Use only the supplied screws M4x10. Using longer screws can lead to severe damage of
internal parts.
4
PM 502 Installation | en 9
Bosch Sicherheitssysteme GmbH User manual 15-May-14 | 02 | F01U297804
Connection
Mains input
The PM 502 receives its power supply via the IEC mains input. Only the provided power cord
may be used. Connect the device only to a mains network that corresponds to the
requirements on the back plate.
Audio inputs
!
Caution!
Please, make sure to set the input channel VOLUME controls or at least the MASTER or AUX
VOLUME controls to their minimum position before connecting an external sound source to
any input of the PM 502. This will save you, your audience, and the equipment from
unnecessary discomfort.
Mono inputs (MIC/LINE)
Electronically balanced MIC/LINE inputs 1 to 5 for the connection of a monaural line level
signal source or a microphone. Generally, any type of XLR-type microphone can be connected
as long as its pin assignment is in accordance to the diagram shown in section Pin
assignments, page 43.
The connection of balanced or unbalanced signal sources can also be established through
monaural or stereo jacks, assigned according to the the illustrations in section Pin
assignments, page 43. If the device that you want to connect has a balanced output stage,
the use of balanced cables with stereo jacks is preferable. This type of connection is less
sensitive to the introduction of external noise or HF interference.
Notice!
Please, do not connect E-guitars or E-basses with passive, high impedance outputs directly to
a MIC/LINE input. The MIC/LINE inputs of the PM 502, as with the line level inputs of mixers
from other manufacturers, are designed for the connection of the relatively low source
impedance of electronic instruments. The reproduction of the instrument’s original sound
characteristics will be unsatisfactory. Connect those instruments using a special transformer
or pre-amplifier with very high input impedance. Musical instruments with an active electronic
output (battery-powered) can be connected without any problems.
5
5.1
5.2
5.2.1
10 en | Connection PM 502
15-May-14 | 02 | F01U297804 User manual Bosch Sicherheitssysteme GmbH
Stereo inputs
Electronically balanced inputs for the connection of musical instruments with stereo output,
like keyboards, drum machines, E-guitars and E-basses with an active output as well as all
other equivalent sound sources with high level outputs, like additional mixing consoles, FX
units, CD players, etc. The stereo LINE input is meant for balanced or unbalanced sound
sources with levels between -20 dBu and +26 dBu.
Using jacks
For the connection of external devices to inputs 6, 7 or 8 you can use monaural or stereo
jacks, which are in accordance to the diagram in section Pin assignments, page 43. If the
device that you want to connect has a balanced output stage, the use of balanced cables with
stereo jacks is preferable. This type of connection is less sensitive to the introduction of
external noise or HF interference. If you want to connect a monaural sound source to a stereo
input channel, use the L/MONO input. The signal is routed internally to both channels.
Using RCA plugs
The RCA inputs CD 1 and CD 2 are connected in parallel to the phone inputs STEREO 1 or
STEREO 2. It is not recommended to connect signal sources to phone and RCA inputs at the
same time.
Using the USB interface
When using the USB interface as an audio input, the stereo signal is routed to STEREO 3. It is
not recommended to connect a signal source to the STEREO 3 inputs at the same time.
Notice!
Always check the audio volume setting in your operating system after connecting the PM 502
to your PC. For the best signal-to-noise ratio the volume setting of your PC should be set to
maximum level.
5.2.2
PM 502 Connection | en 11
Bosch Sicherheitssysteme GmbH User manual 15-May-14 | 02 | F01U297804
Audio outputs
Speaker connection
Danger!
The arrow symbol next to the speaker output connectors indicates the presence of touch
sensitive voltages, which can cause harm to body and health. Please, be sure to adhere to
corresponding notes and instructions in this owner’s manual when establishing speaker
connections.
!
Caution!
Do not connect low-Z and high-Z speakers simultaneously.
!
Caution!
The minimum load in Low-Z mode is 4 Ω per channel.
The PM 502 allows connecting
• low impedance (low-Z) speakers (e.g. 4 Ω or 8 Ω) or
• high impedance (high-Z) speakers in Direct Drive mode (see section 100 V Direct Drive,
page 16 for details).
Low-Z speakers can be connected via speakON or Euroblock connectors. High-Z speakers shall
be connected via the Euroblock connectors only, please refer to the following sections.
speakON
The PM 502 is equipped with professional speakON high-performance connectors, offering
electrical and mechanically secure connection, which complies to all security regulations. It
also allows the use of high quality speaker cables with diameters of 4 x 2.5 mm2. The pin
assignment of these sockets is 1+ (hot) and 1- (cold).
Notice!
Using original Neutrik connectors (e.g. NL4FC) is recommended for optimal audio quality.
Notice!
Using passive subwoofers, which sum the input signal of the left and right channel, is not
possible for technical reasons.
5.3
5.3.1
12 en | Connection PM 502
15-May-14 | 02 | F01U297804 User manual Bosch Sicherheitssysteme GmbH
Euroblock connector in low-Z mode
When the Direct Drive mode is not activated, the Euroblock connector CH 1/2 +/- is in parallel
to the speakON connectors CH 1/2 and can be used alternatively.
Figure 5.1: Connection of low impedance speakers
Euroblock connector in high-Z mode
When the Direct Drive mode is activated, use pin + of CH 1 and pin – of CH 2 to connect the
100 V loudspeaker line, see following illustration.
Figure 5.2: Connection of a 100 V speaker line
Notice!
Make sure to bridge pins 1- and 2+ of the Euroblock connector.
PM 502 Connection | en 13
Bosch Sicherheitssysteme GmbH User manual 15-May-14 | 02 | F01U297804
Line level/USB
Notice!
All outputs are designed in Ground Sensing technology to prevent the induction of external
noise, even with long cables. Use balanced cables for the connection of external components
whenever it is possible.
MASTER A L/R
The MASTER A, L/R output signals are post master A volume control and mainly meant to feed
additional, external power amplifiers or DSP systems. The output is stereo/mono-switchable,
please refer to section Menu, page 26.
MASTER B L/R
The MASTER B, L/R outputs the L/R master audio signal is present that can be used for
additional monitoring, side fill and additional zone applications, or for the connection of a
delay-line or subwoofer. The output is stereo/mono switchable and also pre/post switchable.
Please refer to section Menu, page 26.
AUX OUT
This output provides connection for e.g. a power amplifier or active stage monitor speaker
systems. The AUX OUT can also be switched to master signal (pre or post) if a 3rd master out
signal is required. Please refer to section Menu, page 26.
5.3.2
14 en | Connection PM 502
15-May-14 | 02 | F01U297804 User manual Bosch Sicherheitssysteme GmbH
USB
The L/R master audio signal is always present at the USB interface. This allows using your
PC/Mac for recording while the PM 502 functions as premium A/D converter, without the need
for an external sound card.
Headphone
Stereo phone jack (3.5 mm) for the connection of headphones with an impedance of 32–
600 Ω. The phones output presents the master signal. The corresponding control is described
in section Headphone volume, page 31. The output is protected against short circuit.
Headphones or in ear monitor systems with an impedance below 32 Ω can be connected, in
this case the maximum reachable volume is reduced.
Other connections
USB data storage
Connect a USB flash drive or external hard drive to the USB port on the front panel to use the
integrated audio player of the PM 502. The external memory is scanned automatically for
suitable audio tracks (MP3 or WAV). If audio tracks are detected, the audio player dialog will
be shown in the LC-Display automatically.
Notice!
Powering external drives through USB
The USB 2.0 port of the PM 502 provides up to 500 mA to USB peripherals. Peripherals
exceeding this limit may not work properly, make sure to use an external power adaptor to
supply such devices.
FX switch
A jack FX SWITCH for the connection of an optionally available FS 11 (DC-FS11) footswitch
from Dynacord to switch the effect mode of the internal FX unit on or off. To enable this
function, the FX ON switch (see section FX, page 23) on the front panel has to be engaged.
5.3.3
5.4
5.4.1
5.4.2
PM 502 Connection | en 15
Bosch Sicherheitssysteme GmbH User manual 15-May-14 | 02 | F01U297804