Pass-Through Mode; Digital-To-Analog Converter Option; Moving-Magnet Phono Stage Option - Bryston B100 Owner's Manual

PASS THROUGH MODE
PASS THROUGH mode sets the pre-amp gain to 1 (unity gain) and locks out the volume & balance controls for
any single analog audio source. For example, if the Front Left and Front Right outputs of a home theater sur-
round sound processer were connected to the TV input of the B100, and then PASS THROUGH was engaged then
whevever TV input is selected the volume and balance controls would be locked at unity gain. If other inputs were
subsequently selected, volume and balance controls return to normal operation for those other input sources. Only
the TV inputs would be locked at unity gain. PASS THROUGH mode, therefore, can only be assigned to one input
at a time, but that input can be any one of the analog audio inputs. The power amplifier stage is not affected by
PASS THROUGH mode. PASS THROUGH mode can only be set (or reset) by sending the 3 digit code "245" to
the B100 either from the handheld IR remote control or via the RS232 serial data input. See "Sending Codes to the
B100 via the IR Handheld Remote Control" & "Wired RS232 Remote Control". To reassign PASS THROUGH mode
to a different input source simply select the desired input and re-send the "245" code to the B100. To turn the deac-
tivate PASS THORUGH mode, select the current Pass Through input and then send the "245" code to the B100.
The "245" toggles PASS THROUGH mode on and off.
DIGITAL-TO-ANALOG (D/A) CONVERTER OPTION
The B100-DA comes equipped with stereo Digital-to-Analog converter (D/A or DAC) module. This module is
also retrofittable to standard B100 units.
A unique feature of the B100-DA is its ability to utilize up to four independent digital sources (two SPDIF
and two TOSLINK). These four digital inputs can be accessed by selecting D1, D2, D3 and D4 sources with
the DAC feature enabled (by pressing the DIGITAL4Select button on the left end of the front panel).
Activate the DAC feature by pressing the DIGITAL4Select (AUX 2) button on the left side of the front panel
(or A/D on the remote). The LED below the DIGITAL4Select button will turn Green. Pressing any of the fol-
lowing four buttons will cause their LEDs to light green, as well, to indicate a PCM digital source is present
and connected properly.
• SPDIF 1 is accessed by selecting D1 on the front panel or the remote.
• SPDIF 2 is accessed by selecting D2 on the front panel or the remote.
• Optical 1 is accessed by selecting D3 on the front panel or the remote.
• Optical 2 is accessed by selecting D4 on the front panel or the remote.
The source LED's will turn GREEN when a PCM digital bit stream is present. If there is no bit stream available
or an incorrect bit stream (NON-PCM) the LED will turn RED.
You may re-select Analog by simply depressing the DIGITAL4Select (AUX 2) button once more and the LED
will extinguish.
All of the above functions are available from the hand held remote control as well .
MOVING-MAGNET PHONO STAGE OPTION
The B100-P contains a moving magnet phono stage. The Phono Stage is modular and can be added to the stan-
dard B100 model later if required by your Bryston dealer.
Bryston's MM Phono section features state-of-the-art accuracy in equalization, extremely low noise and distor-
tion, and provides headroom margins sufficient to prevent overload from any known phono source. To access the
Phono section simply plug your left/right turntable interconnect leads into the left/right AUX-1/PHONO inputs on the
rear panel of the B100 and press the AUX-1/PHONO button on the front panel. The AUX-1/PHONO LED will turn green.
If your turntable provides a separate ground lead, system noise may be minimized by connecting it to the ground
lug in the center of the rear panel.