BALANCED INPUT
The DaVinci amplifier utilizes professional quality true balanced line audio inputs for maximum fidelity
and noise cancellation. Supplied with the DaVinci is a Limited Edition BLT4 Balanced Line Transmitter,
finished in the same 24 karat gold as the DaVinci The BLT4 converts an unbalanced signal (standard
RCA output from a head unit) to a True Balanced Audio signal, with all its features and benefits.
Phantom Power - The BLT4 is powered by the DaVinci amplifier via the mini-DIN cable. This eliminates
additional power, ground and remote wire connections.
Mini-DIN Cable - The balanced line audio cable features a small convenient 6-pin mini Din plug.
This cable carries (+) and (-) signal information for Left and Right channels, audio ground and
15Vdc
to operate the Soundstream BLT4.
Flexible Input Sensitivity - The BLT4 is designed for optimum performance with a 5 volt balanced
signal level. Any head unit having an unbalanced signal output level from 250 mV to 5.0 V can be used to
obtain the 5 Volt balanced signal.
Independent Level Controls - The BLT4 features independent Left and Right channel input level
controls for added adjustment flexibility and convenience.
Channels l-2 & 1-4 Input Select - Select input 1-2 if you have a single pair of unbalanced inputs.
Select input l-4 if you have two pairs of unbalanced inputs. This enables you to receive 4 channels of
balanced line output at all times.
Clipping Indicator - The BLT4 also features an input level clipping LED. This Iets you know when you
have reached the desired 5 Volts balanced audio signal level.
Compact Design - The BLT4’s chassis is small enough to fit in the dash of your car behind your radio or
in-dash EQ.
Industry Compatible - While there is as yet no ‘industry standard’ for car audio balanced line audio
connections, you will find an ever-growing number of companies use the same 6-pin connector and pin
configuration (See the diagram below).
(For setting the BLT4, see the section on ‘Level Setting’ on page 15.)
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NOTE: The pin configuration shown in the diagram is the view looking into the
balanced input / output jacks on the BLT4 and the DaVinci.
Limited Edition BLT4
DESIGN FEATURES