Related Manuals for Fohhn MA Series
Summary of Contents for Fohhn MA Series
- Page 1 User Manual MA-4.100 MA-4.600 MA-2.1200 DSP Amplifiers Please read this user manual through carefully before putting the system into operation and keep it for future reference.
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Page 2: Table Of Contents
3.2.4 Status Displays ........................14 3.3 Configuration ..........................15 3.3.1 System Requirements ......................15 3.3.2 Downloading and Installing FOHHN AUDIO SOFT ..............16 3.3.3 FOHHN-NET Cabling and ID Allocation ................. 16 3.3.4 Loading Loudspeaker Presets ....................18 3.3.5 Updating the Firmware ......................18 3.3.6 Connecting All Devices ...................... - Page 3 3.4 Further Functions ........................27 3.4.1 Auto Power Save ........................27 3.4.2 Switching Contact ......................... 30 3.4.3 Password Lock ........................30 4. Technical Specifications ........................31 5. Troubleshooting ..........................34 6. Service and Repair ..........................35 6.1 Maintenance Measures ....................... 35 7.
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Page 4: Introduction And General Instructions
1. Introduction and General Instructions Congratulations on the purchase of your FOHHN® DSP amplifier. Like all products in our AMP CONTROLLER-SERIES, MA-SERIES amplifiers are equipped with the latest CLASS D technology. These amplifiers have been developed to meet the highest demands for sound quality and reliability. -
Page 5: General Safety Instructions
That said, the information presented here should be regarded as accompanying advice and it does not affect the ultimate responsibility of the user to ensure safe on-site operation of a FOHHN system. Warning: To avoid injury, the device must be stored, installed and operated well away from children. -
Page 6: Acoustic Safety Information
(Remove the plug from the mains socket in order to completely disconnect the device!) 1.1.4 Acoustic Safety Information FOHHN loudspeaker systems are capable of generating very high sound pressure levels, which can cause irreparable damage to hearing. Warning:... -
Page 7: Connections And Cabling
The wiring up of loudspeakers should only be done by suitably qualified personnel! Important: To enable communication between a Windows PC with FOHHN AUDIO SOFT installed and MA-Series amplifiers, a FOHHN network adapter (e.g. NA-11 FOHHN-NET USB ADAPTER or NA-4 FOHHN-NET ETHERNET ADAPTER) is recommended. -
Page 8: Information On Abnormal Operation
The temperature of the FOHHN system is displayed in FOHHN AUDIO SOFT. Shutdown can also occur if the product is exposed to direct sunlight or very high environmental temperatures. Reliable operation is only guaranteed in compliance with the permissible ambient temperature range. -
Page 9: The Product
Thanks to their integrated FOHHN AUDIO DSP, the amplifiers can be networked, remotely controlled and remotely monitored. A single piece of control software, FOHHN AUDIO SOFT, provides access to all DSP functions and presets. (The current version of this software can be downloaded free of charge at: www.fohhn.com.) -
Page 10: Contents
1 × Quick Start Guide • 2 × Rackmount brackets If the contents are incomplete, please contact your FOHHN dealer! 2.3 Unpacking When unpacking the system, we recommend the following procedure: 1. Open the packaging and take out the product. -
Page 11: Setting Up
Included in delivery are two rack mount brackets (Rackmount-Set). To mount two Fohhn 9,5“ devices together in a 19“ Rack an optional 19“-Rackconnector, article 8022-00000 is available To mount one MA-Series amplifier in a 19“ rack an optional 19“-Rack bracket with 6 openings for... -
Page 12: Connection Instructions And Controls
3.2.1 USB-C Configuration Port All MA-SERIES amplifiers come with an USB-C socket on the front panel of the enclosure. This allows for optional direct configuration of the device via PC and FOHHN AUDIO SOFT control software – without using a FOHHN network adapter. -
Page 13: Standard Connections
Loudspeaker systems are connected to these terminals (up to 3.3 mm² flexible or 3.3 mm² rigid conductor cross-section). (6) Fohhn-Net input This terminal block is used to connect the amplifier to the FOHHN-NET remote control network. Only use a FOHHN network adapter for this (NA-11 FOHHN-NET USB ADAPTER or NA-4 FOHHN-NET ETHERNET ADAPTER). -
Page 14: Optional Connection Interfaces
3.2.3 Optional Connection Interfaces All MA-SERIES product versions are available with input interfaces for the Dante™ digital audio network or 4 x analogue audio signals. Input option DANTE Interface (4) Dante Network socket for the connection of DANTE digital audio signals. 3.2.4 Status Displays Status displays on MA-SERIES amplifiers take the form of illuminated symbols on the front panel of the enclosure:... -
Page 15: Configuration
3.3 Configuration Using the FOHHN-NET network, you can remotely control and monitor the functionality of your FOHHN amplifier’s integrated digital signal processors (DSP). For this you will need a Windows PC with FOHHN AUDIO SOFT (Version 5.0.3 or later) installed. -
Page 16: Downloading And Installing Fohhn Audio Soft
5. Click on Finish to complete the installation. The software is immediately ready for use following installation and can either be opened via the program symbol on the desktop, or via the Start > All Programs > Fohhn Audio AG > Fohhn Audio Soft path. - Page 17 ID allocation for individual amplifiers: In order for an ID to be allocated, each amplifier must first be connected to FOHHN AUDIO SOFT. Proceed as follows: 1. Connect the FOHHN amplifier to the mains power. 2. Connect the amplifier to a PC via the USB-C socket.
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Page 18: Loading Loudspeaker Presets
You can also change the ID of a FOHHN amplifier at any time while it is in use. To do this, the system must be in the FOHHN-NET. Proceed as follows: 1. Open the Device List view, either via the View menu or via the corresponding button on the Toolbar. -
Page 19: Connecting All Devices
Fig. 1: Overview of the signal chain on a MA-Series amplifier channel There are many gain options, both inside and outside the FOHHN DSP, that enable flexible handling of any application – even in complex situations where the matrix mixing functions are used. - Page 20 Please pay particular attention to the levels when using analog input signals! Analog signals are converted into digital audio signals. This always presumes a definition for 0 dBFS. FOHHN defines +15 dBu as 0 dBFS. However, this definition can vary significantly among manufacturers of mixing consoles and other similar equipment.
- Page 21 Example 1 Standard signal chain, input-, routing- and output- gain 0 dB -> no change of input signal level Example 2 Mix level too low; higher input gain also amplifies noise Example 3 Mix level too high leading to input signal clipping. Lower input gain does not prevent audible clipping! Example 4 Incorrect gain structure leads to loss of signal...
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Page 22: Matrix Functions And Dsp Routing
3.3.8 Matrix Functions and DSP Routing Fohhn DSP – Routing Matrix Functions Fig. 1: Four input channels are mixed to one output channel. The mix volume of each input can be adjusted by one routing gain. Fig. 2: Four input channels are mixed to two output channels. - Page 23 Fig. 3: Four input channels are mixed to four output channels. The mix volume of each input to a specific output can be adjusted via one routing gain.
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Page 24: Integration Into A Dante™ Network
For amplifiers with a Dante™ interface the connection to the DANTE Audio Network is via an Ethernet switch. Controlling of the MA-Series amplifier is done via Fohhn-Net over USB or the Fohhn-Net connector. For control via PC, Audinate’s Dante Controller software is required in addition to FOHHN AUDIO SOFT (see Chapter 3.3.3 “FOHHN-NET Cabling and ID Allocation”). - Page 25 All Dante™ input interface parameters (e.g. the audio routing within a Dante network) must be configured with the Dante Controller software. Dante™ Interface Firmware Update To update the interface’s Dante firmware, the Dante Controller 4.2 (or newer) software is required. You can download this from the Audinate Website: https://www.audinate.com/products/software/dante-controller Perform the update as follows:...
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Page 26: Integration Into The Airea-Net
On the LIBRARY page you have the possibility to store the Fohhn Dante Firmware locally on your PC. Then the update can be done without an internet connection The Dante Firmware update only updates the firmware of the integrated Dante module. The FOHHN device firmware is unaffected and must, if necessary, be separately updated! Here you can find all of Audinate’s technical documentation relating to Dante:... -
Page 27: Renaming Devices And Output Channels
3.3.11 Renaming Devices and Output Channels For better identification within FOHHN AUDIO SOFT it is recommended that, in an installation involving a number of MA-SERIES products, the individual amplifiers and/or their output channels are each given separate names. Proceed as follows: 1. - Page 28 3. In here, select one or more amplifiers and, with a right mouse click, open the context menu. 4. Select Set auto power save. The Set auto power save time window will open. (You can also open this window via the corresponding button at the bottom left of the Advanced device settings dialog.)
- Page 29 5. From the drop-down list (bottom left), select the desired switching time and confirm your selection by clicking OK. Note: During acoustic measurement of your loudspeaker systems, too short a switch-off time can lead to inaccuracies. We recommend a switch-off time of one hour or longer while you carry out your measurements.
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Page 30: Switching Contact
“close” or “open” status of the switching contact. Before configuring the switching contacts, we recommend that you first save all user presets! Further information on saving user presets can be found in the FOHHN AUDIO SOFT user manual. You can download this from the Fohhn website: www.fohhn.com... -
Page 31: Technical Specifications
Dynamic range > 120 dB Remote control Fohhn Net over RS-485, USB-C, Fohhn Audio Soft Remote monitoring temperature, protect, power supply, Fohhn Net, Fohhn Audio Soft Switching contact load preset, standby on / off Password protection Auto Power Save adjustable from 1 s bis 12 h or never active... - Page 32 Controller Digital signal processors Independent limiters Selective bass / mid / high 3-band-limiting Band specific time constants Filter technology 80-bit double precision Input analog or Dante, AES/EBU Input DSP processing FIR filter Input gain -80 dB – +12 dB Routing gain -80 dB –...
- Page 33 Display (front) Ready LED blue = power on, blue flashing = sign Protect LED red = error / protect / standby USB Config LED blue = host, remote control over USB Display (rear) Receive / Send LED remote control, Fohhn Net...
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Page 34: Troubleshooting
Problem Probable Cause Possible Remedies No sound is audible. However, The In- and Output routing in the Check the DSP settings in FOHHN there is an audio signal. User DSP is not correct. AUDIO SOFT. The cable connection between Check the cable or connect the amplifier and loudspeaker is loudspeaker to the amplifier. -
Page 35: Service And Repair
Do not carry out any servicing or any repairs to the device beyond what is listed under “Maintenance Measures” (below) or advised in the “Cleaning Fan Filter Foam Without Tools” section. For details of a FOHHN® Service provider in your area, please contact us at the address on the previous page. -
Page 36: Appendix
CE marking. The relevant Declarations of Conformity are available on request from Fohhn Audio AG, 72622 Nürtingen 7.3 Trademarks All trademarks and brand names referred to in this manual, which may be protected by third parties, are subject to the provisions of trademark law and the title rights of their respective owners. -
Page 37: Disclaimer And Copyright
7.5 Disclaimer and Copyright Disclaimer The contents of this user manual have been created with great care. However, FOHHN AUDIO AG cannot guarantee that the information therein (images, text and other representations) is always complete, correct and current. FOHHN AUDIO AG therefore reserves the right to make changes or additions to the given information at any time.
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