800
XLR Balanced Line Out Jack
Located at the rear, this jack is used to
connect directly to mixing consoles. Use
this when performing live or recording in
the studio. Selecting the
D.I. option in the
D.I. Output mode selection switch (locat-
ed on the front panel) provides a
pre
-EQ
and
pre
-EFX signal while the
Line option
sends the signal
post
-EQ and
post
-EFX.
A
Ground Lift switch, located beside
the XLR jack, lifts the
balanced
Line Out
ground (pin1) when pushed in.
Note: When the Mute switch is engaged,
a signal will not be sent to the mixing
console through the XLR output.
Ground Lift Switch
The
Ground Lift switch is located next to the
balanced
Line Out XLR on the rear panel. If hum is
detected, when connecting from the
balanced
Line Out XLR to a mixing console (or other audio
device), lift the ground (pin 1) by pressing the Ground Lift switch in.
Amp In ¼-inch Jack
The balanced
Amp In jack is located on the rear panel of the XS800H. The Amp In jack provides a
direct path to the
XS800H’s power amplifier, bypassing the preamp. The Master control still controls
the overall output level. Multiple
XS800H’s can be linked together by using the signal XS800H’s
bal-
anced
XLR Line Out to additional XS800H Line In jacks.
Effects Send ¼-inch Jack
External effects processors are provided with a balanced
post
-EQ signal from the
Effect Send jack.
Note:
This jack can also be used as additional line out for sending signals to another power amplifier.
The output of this jack is not muted when the Mute switch is enabled.
Effects return ¼-inch Jack
This balanced jack is used to return effects processed audio signal back into the
XS800H. The
Effects Return control, located on the front panel, regulates the blend of effected and un-affected sig-
nal. This input can also be used as an auxiliary input for mixing in a secondary source of audio such
as pre-recorded music.
Output Jacks
The ¼-inch and Speakon™ jacks are used to connect extension speaker cabinets. All speaker output
jacks are in connected in parallel, minimum load impedance is 2-ohms (e.g. two 4-ohm or four 8-ohm
cabinets).
Cooling System
Two 3-inch fans cool the
XS800H. The fans are run at low speed, the speed increases depending on
how hard the amplifier is working. The air intake vents are located at the rear of the amplifier and on
the top (near the back). The exhaust vents are located at the sides.
Caution:
The rear vent must be kept clear in order for the air to enter into the amplifier. The side
vents are used to allow the warm air out of the unit. At least an inch clearance for each side should be
allotted. The rear of the unit should always remain unobstructed. Rack-mounting the XS800H will not
affect intake/exhaust airflow as long as the rear of the rack casing is open during operation.
Preamp Tube Replacement
Use only Yorkville Sound part number “12AX7SORTED” when replacing preamplifier tubes as they have
been specifically selected for this product.
Please refer to the Service Manual for more information.
Line Out
Send
EFX
Amp In
Footswitch
Circuit
Breaker
Press to Reset
Tuner Out
Rtn
SPEAKER OUTPUTS
Min 2 ohms
SPEAKON™ Pin
Configuration
1+/1–
Yorkville
230V
50Hz
2.5A
120VAC
60Hz 5.0A
TYPE: YS1035
Z666 / PR1.1
GND
Lift
