Peavey Ultra Plus Ultra Plus Operating Manual page 5

VOLUME (21)
Controls the overall volume level of the Clean channel.
LOW GAIN INPUT (22)
Provided for instruments that have extremely high outputs, which can result in overdriving (distorting) the High Gain
input. If both inputs are used simultaneously, the output levels are the same (both are low gain).
HIGH GAIN INPUT (23)
Used for most electric guitars. It is 6 dB louder than the Low Gain input.
Back Panel:
BACK PANEL FEATURES
IMPEDANCE SELECTOR SWITCH (24)
Used to select the appropriate impedance of the speaker enclosure(s). If two enclosures of equal impedance are used,
the switch should be set at one half of that value (e.g. for two 16 ohm enclosures, set switch to 8 ohms; for two 8 ohms
enclosures, set switch to 4 ohms).
SPEAKER OUTPUTS (25)
A
Paralleled l/4" output jacks for connecting speaker enclosure(s) to the amplifier (minimum is 4 ohms).
When using more than one enclosure, be sure to calculate the total impedance and set the Impedance
switch (24) accordingly. (See above section on Impedance Selector Switch).
Important: Use only high-quality, unshielded cable for speaker connections.
REMOTE FOOTSWITCH JACK (26)
Provided for the connection of the supplied remote footswitch. Footswitch is used to select the Ultra Gain, Crunch Gain,
or Clean channel and defeat Reverb.
PREAMP OUT (27)
The Preamp Out can be used to route the amplified signal to a mixing console, tape recorder, etc. Connect the Preamp
output using a shielded cable to an input of the tape recorder, mixer, etc. This patch does not affect the operation of the
amplifier.
EFFECTS RETURN (28)
Input for returning signals from external low-level effects or signal processing equipment.
EFFECTS SEND (29)
Output for supplying signals from external effects or signal processing equipment.
GROUND SWITCH (30)
A
Three-position, rocker-type switch which, in most applications, should be operated in its center (zero)
position. There may be some situations when audible hum and/or noise will come from the loudspeaker.
If this occurs, position the Ground Switch to either positive or negative (+ or - ), or until the noise is
minimized.
Note: Should the noise problem continue, consult your Authorized Peavey dealer, the Peavey factory, or a qualified
service technician. The Ground Switch is not functional on 220/240 volt models.
LINE CORD-120 V products only (31)
A
For your safety, we have incorporated a 3-wire line (mains) cable with proper grounding facilities. It is not
advisable to remove the ground pin under any circumstances. If it is necessary to use the equipment
without proper grounding facilities, suitable grounding adaptors should be used. Less noise and greatly
reduced shock hazard exists when the unit is operated with properly grounded receptacles.
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