4
5
1
2
3
4
5
6
7
8
9
INT-250
POWER
MUTE
INPUT1
INPUT2
INPUT3
INPUT4
1. Standby Power button
2. Display - shows level
3. Input buttons (1 thru 4)
4. Input
indicators
5. Meter
6.
Window
LED
IR
7. Volume control
8. Mute
indicator
9. Mute button
LED
1. Right Speaker Connection
2. Preamp outputs (
&
)
3.
Power Switch
RCA
XLR
AC
4.
Mains Inlet.
6. Preamp inputs (
&
)
AC
RCA
XLR
7. Signal Ground
8. Left Speaker Connection
Preamp Output
L
R
R
L
Preamp Inputs
1
2
3
4
Right
Right
Left
Left
Left
Right
Left
Right
Jumper must be used
with single-ended input
No user serviceable parts inside.
3
1
2
Signal Gnd
Pass Laboratories, Auburn, CA 95602
~ AC Mains
2
6
1
3
4
7
8
volume
display
ext amp on
pass thru
balance
tape
3
mute
5
4
2
1
power
PASS
Remote functions:
power:
mute:
Mutes the output of the ampli
fi
er and
preamp
1,2,3,4:
Direct input selection
volume:
adjusts the output level
Basic Operations:
Power on / Off:
Once the
-250 is turned on from the rear power switch, the
INT
INT-250 can switch in to stand by mode from the front panel
power switch or the power button on the remote. In Stand By the
INT-250 draws less than 0.5 watts.
Front Display & Meter:
The
display show volume level in one dB steps, from 0 to 63. The meter operates
LED
slightly different from our ampli
fi
ers in that this meter doesn
’
t show bias but output
voltage.
Input selection:
The inputs can be selected by the four buttons on the face plate or the input buttons (1-4)
on the remote.
Volume control:
The volume level can be set by using the volume control knob on the face plate of the
volume buttons on the remote
Mute:
The
-250 can be muted from the front panel or remote. When in
the display
INT
MUTE
shows
“
00
”
and the
above the
button on the faceplate will be on.
LED
MUTE