Loyola Enterprises

A veteran and minority owned SDB Certified Business.

Electro-Voice















DMM 4650


757.498.6118 Ext - 109DMM 4650 - Call for pricing - Recorded Message Manager

Downloads

PDFDMM 4650 Specifications (pdf)

PDFDMM 4650 Technical Information (pdf)

PDFDMM 4650 Manual (pdf)


The DMM 4650 is a digital audio storage system, capable of audio recording and playback, as well as, audio signal generation such as alarms. The main application is as an additional audio recording device for the ProAnnounce system, but stand-alone applications are possible as well. The audio signals can consist of alarm, gong, messages and also random combinations. These programs were created by Dynacord and stored as presets.

The audio quality of the messages can be selected depending on memory extension and different user requirements. With maximum memory extension, a total recording time of 16 minutes is possible. Password protection is provided. The operation is easy, like cassette recorders or CD players. A computer interface allows saving and loading of unit configurations and message data. In order to ensure function reliability, a self-test and an audio data verification is installed. The alarm is provided via a dedicated output. The DMM 4650 does not require maintenance due to its use of flash memory.

Features

  • Self-monitoring with fault message output
  • Password protection over several levels
  • RS-232 interface for data backup and servicing purposes
  • Integrated service and maintenance program software
  • Expandable flash-memory
  • Direct digital recording and reproduction of at least 100 different sound and speech signals
  • Maximum recording time up to 16 minutes
  • Maximum bandwidth is 16 kHz
  • 15 acoustical alarm signals and 6 different gong signals

Architectural and Engineering Specifications

The message delivery unit shall provide universal generation and control of audio signals. The main application shall be for PA racks, but stand-alone applications are possible as well. The audio signals shall consist of alarm, gong, messages and also random combinations. The audio quality of the messages shall be selected depending on memory extension and different user requirements. With maximum memory extension, a total recording time shall be 16 minutes.

In order to ensure function reliability, a self-test and an audio data verification shall be installed. The fault alarm shall take place via a dedicated output. The unit shall utilize flash memory so as to be maintenance free.

Password protection shall be provided. The operation shall be simple, similar to cassette recorders or CD players. A computer interface shall be provided allowing for saving and loading of unit configurations and message data.


Specifications
Operating Voltage 21.6–31.2 V DC
Power Consumption Max. 18 watts
Input Voltage 0.775 V / 0 dBu
-Line Input 0.775 V / 0 dBu
-Rec Input 0.775 V / 0 dBu
-Mic Input 1.4 mV / -54 dBu at 600 Ω
Max. Input Voltage 3.8 V / +14 dBu
-Line Input 30 V / +32 dBu
-Rec Input 30 V / +32 dBu
-Mic Input 50 mV / -24 dBu at 600 Ω
Input Impedance (bal./unbal.) 20 kΩ / 10 kΩ
-Line Input 20 kΩ
-Rec Input 20 kΩ
-Mic Input 1.4 kΩ
Output Voltage 0.775 V / 0 dBu
-Pre-Output 3.2 V / +12 dBu
-Phones 3.2 V / +12 dBu
Max. Output Voltage 3.8 V / +14 dBu
-Pre-Output 9 V / +21 dBu
-Phones 9 V / +21 dBu
Output Impedance (bal./unbal.) 136 Ω / 68 Ω
-Pre-Output 220 Ω
-Phones 220 Ω
Frequency Response (-3/0 dB) 20 Hz–20 kHz
-Mic Input (-18/3 dB) 20 Hz–16 kHz
-Others (+0/-3 dB) 20 Hz–16 kHz
Signal to Noise Ratio (A-weighted) > 108 dB
-Message (A-weighted) > 90 dB
THD @ 1 kHz < 0.03%
-Message @ 1 kHz < 0.05%
Data Format AD/DA converter 16 bit linear
DSP Internal 24 bit
Sampling Rate 35 kHz
Control Inputs < ± 5V=Low, > ± 10V=High
Control Outputs floating relay contacts 1A at 24 V DC
Dimensions (HxWxD) 4.4 x 48.3 x 22.5 cm (1.75" x 19.0" x 8.86")
Weight 4 kg (8.82 lbs)
Purchasing
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or