Peavey IPA 75, 150T II Owners Manual
Cover for IPA 75/150T II
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Intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure
that may be of sufficient magnitude to constitute a risk of electric shock to persons.
Intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the
literature accompanying the product.
CAUTION: Risk of electrical shock – DO NOT OPEN!
CAUTION: To reduce the risk of electric shock, do not remove cover. No user serviceable parts inside. Refer servicing to
qualified service personnel.
WARNING: To prevent electrical shock or fire hazard, do not expose this appliance to rain or moisture. Before using this
appliance, read the operating guide for further warnings.
The IPA™ 75T II and IPA™ 150T II are high-performance amplifiers designed to
meet the needs of sound reinforcement installations. The circuit design assures
reliable long-term operation and smooth trouble-free installation. The IPA Series
power amplifiers are ready for any job, utilizing an isolated transformer with multiple output configurations.
FEATURES
• Switchable subsonic filter
• SPS™ (Speaker Protection System) circuitry with LED indicator
• LED indicator for signal activity
• Low current 24 V DC output
• Sensitivity switch
• Balanced screw terminal input
• Balanced line-level output
• Level control
• 8 ohm, 25 V and 70 V transformer-isolated outputs
• 4 ohm direct output
• AC convenience outlet
• Powder coated steel chassis
• Rack-mountable with optional ears (2U)
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LEVEL (1)
Controls the volume level of the system.
SUBSONIC FILTER (2)
The "in" position of this switch activates the 18 dB/octave subsonic filter at 42 Hz. The "out" position
removes the subsonic filter from the system.
POWER ON LED (3)
Indicates when AC power is being supplied to the unit.
SPS™ ACTIVE LED (4)
Illuminates when SPS™ circuitry is active. SPS™ eliminates power amplifier clipping.
ACTIVITY (SIGNAL PRESENT) LED (5)
Indicates signal presence at amplifier output. Illuminates when output is approximately 35 dB below full
power.
POWER SWITCH (6)
Depress to "on" position to turn on.
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INPUT SCREW TERMINALS (7)
Provides an electronically balanced input, nominally 100 mV to 1 volt (see Sensitivity Switch). For
unbalanced inputs, use the (+) and (-) terminals.
24 V DC OUTPUT TERMINALS (8)
Provides connection for a low current (20 mA) 24 V DC output for powering low current external addon equipment.
SENSITIVITY SWITCH (9)
Switches the input sensitivity from 100 mV to 1 volt.
OUTPUTS (10)
A direct output, as well as several isolated transformer outputs, are provided to allow the proper interface between the amplifier and the speaker system. The direct output allows direct connection to a 4
ohm speaker system. To use this output, disconnect the jumper between the 4 ohm terminal and the
XFMR terminal. Connect the speaker (or speakers) from the GND terminal to the 4 ohm terminal.
Also provided are 8 ohm, 25 volt, and 70 volt balanced outputs. To use these outputs, the jumper between 4 ohm and XFMR must be installed. For 8 ohm speaker systems, connect between the COM
terminal and the 8 ohm terminal. For "distributed" speaker systems, 25 volt and 70 volt outputs are
provided. The connection for distributed systems is between the COM terminal and either the 25 volt or
70 volt terminals, depending on the required system voltage.
One more output is provided on the IPA Series amplifiers. This is a balanced, transformer-isolated line
level output. This output is provided for direct connection to "music on hold" systems, booster power
amplifiers, etc. This output is designed to deliver 1 V RMS into a 600 ohm load. See Figures 2 through 5
for possible output connections.
AC OUTLET (UNSWITCHED) (11)
Provides AC power for auxiliary equipment with power consumption — 300 watts maximum.
FUSE (12)
The fuse is located within the cap of the fuseholder. If the fuse should fail, IT MUST BE REPLACED
WITH THE SAME TYPE AND VALUE IN ORDER TO AVOID DAMAGE TO THE EQUIPMENT
AND TO PREVENT VOIDING THE WARRANTY. If the amp repeatedly blows fuses, it should be
taken to a qualified service center for repair.
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