BHA-1 REAR & FRONT PANEL LEGENDS
FRONT PANEL
1: INPUT SELECT SWITCH
Select between Balanced (XLR 3 pin female),
RCA (unbalanced or single-ended) and MINI
(3.5mm TRS or 3 conductor mini
Phone
jack)
2: GAIN SELECT SWITCH
Select between 14 decibels (gain = 5) or 20
decibels (gain = 10)
3: VOLUME CONTROL
4: BALANCE CONTROL
With centre detent.
5: BALANCED OUTPUTS
Using two 3 pin XLR jacks, one for the left
channel output and another for the right chan-
nel output. Pin 1 is ground, pin 2 is the posi-
tive phase and pin 3 is the negative phase.
See page 5 and 6 for more wiring details.
6:
BALANCED OUTPUT (4 PIN XLR)
This 4 pin XLR jack is wired in parallel to the
dual 3 pin XLR jacks (see above), therefore
do not use both the dual 3 pin XLR’s and the
single 4 pin XLR output at the same time.
Pin 1 = Left +
Pin 3 = Right +
Pin 2 = Left –
Pin 4 = Right –
7: SINGLE ENDED OUTPUT
Quarter inch stereo
phone
jack, also referred
to as a ¼ inch TRS (Tip-Ring-Sleeve) connec-
tor, or a 3 conductor ¼ inch phone jack. This
single ended or unbalanced output uses only
one of two output stages and therefore deliv-
ers only half the available power.
TIP =
Left channel
RING =
Right channel,
SLEEVE = ground (or common)
