MMR Bus | Tascam MMR-8 guide

Recording new audio into a Tape Mode project while the Record Mode is set to either Auto Cleanup or Non-Destructive turns the Tape Mode project into a non -Tape Mode project. Once changed in this fashion, the mode cannot be reset to Tape Mode for this project. It is also not possible to set the Record Mode to Tape Mode if a non-Tape Mode track is loaded into any of the track indexes. Note that it is possible to convert a non-Tape Mode project into a Tape Mode project by using the MMR Backup function with the Tape Mode Convert option. This is accessed by pressing LOAD TRACK, choosing the project to be backed up, then pressing SHIFT + SLIP to enter the Backup state. Choose Tape Mode Convert from the backup menu to rewrite the chosen project as a Tape Mode project on the target drive. When Tape Mode is set as the Record Mode in menu 200, the Destructive machine status LED will light.

The MMR Bus

The operation of multiple MMR-8s may be synchronized by using the supplied 15-pin sync cable to connect the MMR units together via the MMR bus sync connection (the two 15-pin connectors on the SYNC card). Since this bus is self-terminating, simply daisy chain all the MMR-8s together in any order. The MMR bus supports four independent Sync Groups, so any machine on the MMR bus can be assigned to any of the four groups at any time without changing the physical connections. Also, since the MMR bus carries system-wide frame and sample references, no other connections are required between the various MMR-8s to provide sample accurate synchronization lock between them.

Each MMR Sync Group on the MMR bus must have a Master MMR, with the rest of the units in the Sync Group acting as Slaves to the Master unit. It is only necessary for the Master unit to receive incoming synchronization signals from external sources (digital clock, video sync, SMPTE/EBU, biphase, etc.) since the remaining units on the associated MMR bus Sync Group will slave only to the Master unit. This allows up 100 units to work synchronously and sample accurately together as one large machine without having to feed duplicate sync reference signals independently to each unit.

Once the units to be linked using the MMR bus have been physically connected via the MMR bus connection, their transports can be operated together as one large system. There are several Setup menus which are used to govern how each unit behaves within the system. These are described here.

Menu 110 (MMR Bus Request) allows each MMR to request to be Master, Slave, or off the MMR bus altogether. Only one MMR per sync group can act as master. If multiple units are set to request master status through this menu, the MMR Bus system will automatically choose the unit with the lowest serial number among those making the request to be set as the master for the sync group. The appropriate MAST or SLAVE LED will light on the MMR front panel to show the unit’s status on the MMR bus.

Menu 111 (Ident Request) allows each unit to request an individual identity on the MMR bus. If no other unit is requesting the same ID, the system will set the unit ID to the requested number and that number will be displayed in the Ident window on the front panel of the MMR. If another unit has requested the same ID, the system will resolve the conflict and automatically assign each unit a unique ID on the bus. If an ID other than that requested is assigned due to a conflict, this field will not change, and the machine will continue to request this ID whenever it is powered up or added to an MMR bus chain.

Menu 112 (Ident Assigned) is an information display only (data cannot be entered) that shows the currently assigned identity for this unit on the MMR bus. This number may be different than the ID requested if there is a conflict on the MMR bus and the system has assigned the unit a different ID.

To synchronize a slave unit to the master MMR on the bus once the above settings are confirmed, place the slave unit online (press the ONLINE key on the transport).

78	Tascam MMR-8 Owner’s Manual • Chapter 4 • MMR-8 Setup Menus MMR-8

MMR-8 specifications

The Tascam MMP-16 and MMR-8 are two innovative products designed to meet the specialized needs of audio professionals, offering advanced features and capabilities suitable for various recording and playback applications.

The Tascam MMP-16 is a versatile audio router and mixer that excels in different environments, from live sound to studio recording. One of its primary features is the 16-channel configuration, allowing for significant flexibility in signal routing. The MMP-16 supports multiple audio formats, including analog signals, making it adaptable to a wide range of setups. It boasts high-quality AD/DA conversion, delivering excellent audio fidelity and low latency performance.

Additionally, the MMP-16 is equipped with comprehensive digital processing capabilities, including EQ and dynamics processing on each channel. This makes it ideal for both mixing live performances and preparing recordings for post-production. The unit's user-friendly interface includes an intuitive display and physical controls that streamline operation, making it easy for both novice and experienced engineers to navigate.

On the other hand, the Tascam MMR-8 is a robust multi-track digital audio recorder that offers exceptional reliability for professionals who require high-quality audio capture. This 8-channel recorder shines in its ability to handle various digital audio formats, ensuring compatibility with different workflows. One standout feature of the MMR-8 is its solid-state recording technology, which enhances durability and reduces the risk of data loss, a crucial aspect in high-stakes recording environments.

The MMR-8 also provides comprehensive onboard monitoring options, allowing users to assess audio quality in real time. Its extensive connectivity options include digital and analog inputs and outputs, facilitating seamless integration with other studio equipment and live sound systems. The data management capabilities of the MMR-8 make it easy to organize and retrieve recordings, while its compact design ensures portability without compromising on performance.

Both the MMP-16 and MMR-8 showcase Tascam's commitment to innovation and quality in the audio industry. Their advanced features, coupled with solid build quality and ease of use, make them essential tools for audio professionals seeking reliable solutions for their recording and mixing needs. Whether utilized separately or in conjunction, these devices amplify creativity and enhance the overall audio production experience.