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Signal routing

Overview

Matrix mixer selection tab in miniDSP Flex HTx

The Matrix Mixer tab is the second of the two mixers. It routes the signal from the Dirac Live processing blocks (down the left) to the output channels (along the top). The default routing simply routes directly through:

Matrix mixer with default routing for the miniDSP Flex HTx

Examples

This section contains several basic examples illustrating how to use the Matrix Mixer. In a real application, you will often want to combine these examples in various ways (for example, to use multiple subwoofers together with active speakers).

Multiple subwoofers

The diagram below shows an example of multiple subwoofer use. This example is for a 5.1 system – since channels 7 and 8 are not used for speaker channels, they can be used to control additional subwoofers:

Signal flow for multiple subwoofers in miniDSP Flex HTx

The matrix mixer for this example is:

Routing for multiple subwoofers in miniDSP Flex HTx

Multiple subwoofers can be used to smooth bass response over a larger listening area. For more information, see the app note on our website Tuning multiple subwoofers with miniDSP.

Active speakers

The miniDSP Flex HTx is not limited to use in 5.1 or 7.1 home theater systems! With its flexible routing, it has many other uses.

The diagram below illustrates the signal flow for a 3-way active speaker system. The woofer, midrange and tweeter of each speaker are each given their own amplifier channel controlled by an output channel from the miniDSP Flex HTx:

Signal flow for active speakers in miniDSP Flex HTx

Here is the matrix mixer for this example:

Routing for active speakers in miniDSP Flex HTx

For more information, see the app note on our website Designing a 3-way active speaker with the miniDSP Flex Eight. (The app note was written for the Flex Eight but also applies to the Flex HTx.)