Peavey XR-700 User Manual

NOTE
DO NOT ATTEMPT TO CONNECT THE OUTPUT OF MAGNETIC PHONO CARTRIDGES DIRECT TO EITHER INPUT
SINCE THESE CARTRIDGES REQUIRE RIAA EQUALIZATION PRIOR TO INSERTION INTO UNITS SUCH AS THIS THE
PREAMP CIRCUITRY OF THIS UNIT FEATURES SUFFICIENT GAIN TO OPERATE WITH MAGNETIC PHONO
CARTRIDGES BUT DOES NOT HAVE THE SPECIAL RIAA EQUALIZATION SO NECESSARY TO REALIZE MAXIMUM
PERFORMANCE. SMALL "PREAMP/EQUALIZERS" ARE AVAILABLE FROM MOSTELECTRONIC SUPPLY HOUSES THAT
PERFORM THIS RIAA EQUALIZATION FUNCTION VERY INEXPENSIVELY.(SUGGEST SHURE MODEL M-64, RADIO
SHACK PHONO PREAMP MODEL NO. 422101, OR EQUIVALENT.)
CHANNEL PATCHING (OUT/IN) JACKS (2)
Each input channel of the XR-700 has been provided with a dual circuit (stereoswitching type) jack that provides a channel send and
return to allow in line patching ol auxiliary effects, equalizers, etc. These jacks accept the standard "ring-tip-sleeve 'type stereo plugs.
When a stereo plug is inserted into the out/in jack, the‘tip” of the plug is connected to the channel send and the "ring" is connected to the
channel return, while the “sleeve" is the common ground for both send and return If a channel output is desired for an additional monitor
serdor a direct output without breakingthe internal link, thiscan be accomplished by plugging a standard phone plug into the first detent
(click) of the jack. This unique send/receive system enables interface ol the XR-700 individual channels with a wide variety of auxiliary
effects and equipment. The effect've output impeCanc9 is approximately. 600ohms at a level of 1 volt while the input is approximately 50K
ohms with a 1 volt sensitivity.
AUXILIARY INPUTS (3)
The auxiliary inputs are line level access points to the three internal mixing busses. They arethe medium impedance type (33K ohms)
and are provided to allow paralleling mixers or for any other purpose that requires direct signal injection to the internal mixing busses.
REVERB FOOTSWITCH (4)
To facilitate remote control of the reverberation function we have included a remote control footswitch jack. Any standard singlepole
footswitch may be used to remotely defeat the reverb function. Please note that this switch disables the reverb system only and has no
effect whatever on the effects system.
EFFECTS RETURN (5)
The effects return on the rear panel is the input to the effects return preamp which has its own level control located on the front panel.
This effects return is capable of handling a wide range of input signals and is a very high impedance type (22DK ohms). The effects return
system connects to the main mixing buss and is intended for use when returni ng signals from external devices to the main mix. Effects
return signal may also be mixed into the monitor system via the effects/reverb to monitor control (H).
EFFECTS OUTPUT (SEND) JACKS (6)
Two output jacks from the effects buss are provided to enable matching to professional line level as well as instrument level effects
devices. The high level iack is a relatively low impedance (600 ohms) and is capable of more than 2 volts RMS. while the low level output
jack provides approximately 0.5 volts RMS at 10K ohms impedance.
SUM OUTPUT JACK (7)
For added convenience, the XR-700 features a main/monitor sum output tc provide a mix of both main and monitor systems for feed
to various external devices This feature allows a high level signal to be fed tc remote locations to enable remote listening to the total
program material being mixed through the XR-7Q0. In addition, this sum feature allows tape recording, etc, while the normal main and
monitor master outputs are being used for other purposes.
POWER AMP INPUTS (8)
Each power amp in the XR-700 features an input jack to facilitate patching in other signals. The power amp input jacks are of the
switching type that are normally internally connected to the graphic outputs. Whenever plugs a*e inserted into the power amp inputs,
these connections are broken and the power amp input jacks feed directly to the internal power amplifiers. This unique feature enables
either of the power amps to be patched separately as needed within the system.
GRAPHIC INPUTS AND OUTPUTS (9)
Each graphic of the XR-700 has been equipped with patching jacks both at the input and the output to allow patching either graphic
elsewhere within the system. The graphic inputs are of relatively high impedance type (50K ohms) and requi re approximately a 1 volt RMS
nominal level. The graphic outputs are low impedance type (600 ohms). The graphic inputs are of the switching type that are normally
internally connected to the main end monitor outputs Insertion of a plug into a graphic in jack disconnects the graphic from the
preceding circuitry making the graphic independent of the mixer section.
MASTER OUTPUTS (10)
The master outputs deliver signal from the main and monitor mixing amplifiers and may be considered the primary signal outputs
from each respective buss. The output level is relatively low impedance (6X)0ohms) and is capable of better than 4 volts into a 600 ohm
load, with considerably higher levels available into higher load impedances. Signal from these outputs is normal ly patched to the graphic
in switching jacks to complete the signal flow to the graphic equalizer/power amp combination Connection of external devices such as
tap© decks, etc., to these outputs will in no way aftect the normal operation of the XR-70O’s other systems.
POWER AMP OUTPUTS (11)
The power amp output tacks are provided as a means of connecting speaker systems to the two internal 100 watt power amps. Each
power amp has two output jacks which are wired in parallel. The internal amplifiers are designed tor 4ohm total ioads and each amplifier
will supply maximum power into this impedance. afferent impedances may be used with the internal amplifiers with some sacrifice in
output power. Caution should be observed in using lower than 4 ohm tota ; loads since this tends to increase the heat dissipation as well as
enhancing the possibility of energizing the power amplifiers’ internal short circuit and/or thermal overload protection systems.
It is vital that the wire gauge of the speaker connection cables be as large as practical and that thelength of the connecting cables be
reasonably short. Significant sacrifices in performance will result with smaller wires and/or long speaker cable runs.
CAUTION
TO INSURE MAXIMUM POWER, INTERFACE SPEAKER CABLING SHOULD BE KEPT AS SHORT AS POSSIBLE AND THE
LARGEST PRACTICAL WIRE SIZE SHOULD ALWAYS BE USED HIGH LEVEL AMPLIFIERS GENERATE EXTREMELY
HIGH CURRENTS WHICH ARE GREATLY AFFECTED BY THE RESISTANCE OF THE SPEAKER CONNECTION WIRING.
CAUTION
UNDER NO CIRCUMSTANCES IS IT RECOMMENDED THAT THE POWER AMPLIFIERS IN THIS POWERED MIXING
SYSTEM BE USED WITH EXTREMELY LONG SPEAKER CABLES OR WITH “‘SNAKE’’ INPUT/OUTPUT MULTICABLES.
FUSE (12)
The fuse is located w<thin the cap of the fuseholder. It is necessa'y that the luse be replaced with theproper type and value if It should
fail in order to avoid damage to the equipment and to prevent voiding the warranty. If your unit repeatedly blows fuses, it should be taken
to a qualified service center for repair
POWER SWITCH (13)
On domestic units, the power switch is of the three-position type with the center position being "OFF ." This switch has two "ON"
positions, one of which is used to ground the amplifierproperly. Oneof the "ON" positions will yield the lowest amount of residual hum or
• pepping” when the mic or mixer is touched and this is the position that should be used.
On export models, we utilize a simple ON/OFF switch that does not have multiple "ON" positions since the grounding (earthing)
conditions in most countries are made positively through standard tamper-proof plug-m systems.
LINE CORD (14)
For your safety, we have incorporated a three-wire line (main) cable with proper grounding facilities. It is nol advisable to removethe
ground pin under any circumstances. If it is necessary to use the amp in a two-pin plug system without proper grounding facilities,
suitable grounding adaptors should be used. Much less noise and greatly reduced shock hazard exist when the unit is operated with the
proper grounded receptacles.

Peavey XR-700 Specifications

General

Brand	Peavey
Model	XR-700
Category	Amplifier
Language	English