Delta Manual

The BBE DI-10 is an active direct box used for converting line out and speaker out signals to balanced and unbalanced signals. The user also has the ability to select between two frequency responses (flat, or speaker compensated). Using the outputs from the DI-10, the user can direct feed to a mixer, recorder, or sound reinforcement system. The features that make up the BBE DI-10 are:

1. Speaker thru and Speaker input jacks.
2. 1/4” phone jack for line level signal input and output.
3. XLR jack for mic level, balanced output.
4. Filter switch to operate the speaker simulating filter.
5. Tri-mode powering for three different modes of powering:
   • internal 9V battery,
   • 9VDC external power source, and
   • 48V phantom power source through the XLR connector.
6. Tri-mode power scanning feature which scans the three power
   sources and uses only the highest source of power and shuts off the other power sources.

SPEAKER THRU AND SPEAKER INPUT: These are 1/4” mono phone jacks. When using an amplifier, the output from the power amp section connects to the ‘speaker input’ jack while the amplifier speakers connect to the ‘speaker through’ jack.

CAUTION: Never operate an amplifier featuring a tube power stage without a connection to a speaker or sufficient power resistor.

FILTER SWITCH: This switch is used to operate the speaker simulating filter. When the filter is off, system frequency response is flat. When the filter is on, a 4th order filter network is activated and the system frequency response is 6dB down at 4kHz

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