Dynacord DMM 4650 owner manual User questions, hints

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User questions, hints

This chapter tries to explain some of the DMM 4650’s functions that first may seem somewhat surprising for the user and to provide the amended solution.

Question: Recording a message is suddenly interrupted by the DMM 4650?

Explanation: a) An external contact initiated a sequence with a higher priority (e. g. alarm) than the one of current user. This reaction is necessary and intended, since no user with a priority level 1 or 2 should be able to block the alarm functions.

Solution: a) Record the message with the same number (delete? = yes) after the priority sequence ends.

Explanation: b) Audio memory overrun.

Solution: b) Deleting message numbers that are no longer needed re-provides memory, or install additional audio memory (user 3) in case of need.

Explanation: c) During recording the DMM 4650 has recognized a defect memory address, which is marked as

 

bad and is no longer available for future recordings (bad block).

Solution: c)

Start a new recording using the same message number (delete? = yes).

Question:

The message number xx cannot be recorded. The message “access denied” is displayed.

Explanation: a) The number has been assigned to a user with higher priority. You cannot delete this message.

Solution: a)

Select another message number.

Explanation: b) This also happens during a remote recording, if the desired sequence for the message mistakenly

 

has been recorded by the installer, without programming access for users with a lower priority.

Solution: b)

User 3 has to delete this message.

Question:

How can I test a sequence (only user 3), without audio transmission?

Explanation:

The “System setup” > “Bypass” menu provides the possibility to switch the audio bypasslayre to

 

direct connection (input > output) for the duration of the test. This procedure interrupts the audio

 

connection DMM signals > output; except when the test sequence itself switches off the relay again.

Question:

What happens when the operation voltage of 24 volts drops for several seconds during the

 

transmission of an alarm sequence?

Solution:

In case one of the factory preset alarm signals (trigger A3, A4, B1, or B2) was used re-starts the

 

sequence as long as the alarm button is still pressed.

Question:

What do I have to do when the green POWER LED on the front panel blinks?

Solution:

The flashing LED is caused by the DMM 4650’s self-test routine. The LED blinks whenever an

 

error is being detected. Detailed information on the cause of the error are only available to the

 

service provider (user 3) (see also on page 29). Enter the user 3’s password in the “self-test”

 

menu, write down the displayed error messages, and using the soft key “quit” you have to delet

 

all errors one by one.

 

If the LED starts blinking again, this shows that the error is still present. Look for the cause that

 

generates the problem and try to solve it - otherwise send the appliance to the manufacturer for

 

servicing.

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Contents DMM DescriptionContents Page Page Installation instructions Front Panel Multi-function DisplayRear Panel Use of the DMM Sequence function Operating the DMM GeneralPasswort Message number, Preset MessageGeneral Operation menu messageSoft key edt Recording level Remote recordingAudio quality, recording duration Message memory extensionGong Presets GongOperation menu gong List of available gong parameters Type four-stroke, three-strokeAlarm Alarm PresetsOperation menu alarm List of available alarm parameters Type Uni-sweepType Bi-sweep Type continuous soundType Jump sound Type burstAnnouncement Operation menu announcementTrigger Operation menu triggerExamples for trigger settings Trigger recognitionSequence Presets SequencesOperation menu sequence Stop triggerCommand Sequence exampleFunction List of available step functions in sequences DMM=Operation menu system setup Backup Sum levelAttenuation Init DMMRestore RS232Clock Self test Operation menu self testConnections Control levels and currentsGeneral Pin NameInstallation example InputsAudio inputs and outputs Remote, RS 232 interface, data backup Interface settingsBackup, Restore commands, Priority Connection REMOTE/RSList Remote commands Command Parameter FunctionTerminal programs Factory Presets Factory settings, defaultsList of trigger signals List of factory preset sequences Start DIN alarm key B1 ON, Stop with key B1 OFF Priority Stopp trigger DIN-Alrm B1 Low 00,1s stcPriority Stopp trigger Alrm-Txt B2 Low 00,1s stc Sequence Nummer Title Priority Stopp trigger Vierklng Off Tone gongB4 Low 00,1s stc Start Pre-gong key B4 on, end of announcement with keySequence Nummer Title Priority Stopp trigger Message2 Off Priority Stopp trigger EasyRec1 C3 High 00,1s latStarts the recording of Message 01 remote recording Stops by pressing the input C3 button againPriority Stopp trigger EasyRec2 C4 High 00,1s lat Starts the recording of Message 02 remote recordingStops by pressing the input C4 again BZB ABC alarm Priority Stopp trigger Ansage D3 Low 00,1s stcKey is being pressed System input -20 dB Ship alarm General Emergency Priority Stopp trigger Fireship Off Ship alarm FireShip alarm Manual Morse key Priority Stopp trigger ManMorse OffTelephone bell List of factory preset gong signals Gong no Title Prior Type Bar Attack Release Start Repeat cntList of factory preset alarm signals Troubleshooting Error Name Function testAppendix User questions, hints Using the soft key set Examples for Alarm Texts Specifications DMM Warranty

DMM 4650 specifications

The Dynacord DMM 4650 is a powerful and versatile digital mixing console designed for professional audio applications. Built with cutting-edge technology and years of expertise in the audio industry, the DMM 4650 is a go-to solution for live sound engineers, rental companies, and permanent installations.

One of the primary features of the DMM 4650 is its 32 input channels, allowing for seamless integration of multiple sound sources. Each channel is equipped with high-quality preamps that deliver a clean, transparent sound. The console also includes 16 bus outputs, enabling flexible routing options for different sound systems, whether for front-of-house, monitors, or recording purposes.

The DMM 4650 comes with an intuitive user interface, highlighted by a large touchscreen display that provides clear access to all essential parameters and features. This interface allows users to navigate quickly through settings, making adjustments in real-time without disrupting the audio flow. Additionally, the console supports multiple layers of channels, giving engineers the ability to work efficiently during complex shows.

One standout technology incorporated in the DMM 4650 is its digital signal processing (DSP) capabilities, which include high-quality equalizers, dynamics processors, and effects units. The onboard DSP can manage multiple effects such as reverb, delay, and modulation, giving users a wide range of sound-shaping tools. Moreover, the DMM 4650 features an advanced audio networking option, allowing for easy connectivity with other digital equipment and systems, promoting a streamlined workflow.

Robust connectivity is a hallmark of the DMM 4650, which sports both analog and digital outputs, including AES/EBU and MADI options. This flexibility ensures that the console can adapt to various setups and can coexist with existing audio infrastructure without hassle.

Durability is also a key characteristic of the DMM 4650. Designed for the rigors of live performance, the console's rugged construction ensures reliable operation in demanding environments. Whether it's a large concert, corporate event, or installation in a house of worship, the DMM 4650 is engineered to deliver outstanding performance consistently.

In conclusion, the Dynacord DMM 4650 is a comprehensive digital mixing console that combines advanced technology with user-friendly features. Its high-quality audio processing, extensive connectivity options, and robust build make it an excellent choice for audio professionals looking to elevate their sound mixing capabilities.
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