Pultec EQP-1A Installation And Operation Instructions

INSTALLATION AND OPERATING INSTRUCTIONS
PULTEC MODEL EQP-1A PROGRAM EQUALIZER
The PULTEC model EQP-1A program equalizer consists of a passive
equalizer, an amplifier and self contained power supply. The amplifier restores the
insertion loss of the equalizing network, thus providing a no loss, no gain unit.
INPUT IMPEDANCE:
OUTPUT IMPEDANCE:
AVERAGE INPUT LEVEL: optimum range-15dbm to +8dbm.
MAXIMUM PEAK OUTPUT LEVEL: +21 dbm.
POWER SUPPLY: 117 volts, 50/60 cps, 25 watts
The "LOW FREQUENCY" selector switch determines the curve on
which the left hand "BOOST" and "ATTEN" controls are effective. EITHER the boost
control OR the attenuate control should be operated as required. Do not attempt to
boost and attenuate simultaneously on the low frequencies.
The "HIGH FREQUENCY" selector switch determines the curve on
which the left hand "BOOST" control is effective. The "ATTEN SEL" switch selects
the curve on which the right hand "ATTEN" control operates. Consequently, it is
possible, and sometimes very desirable, to operate the right hand boost and
attenuate controls simultaneously. For example it may be desired to roll off on the
20kcs attenuate curve and also to brighten the signal somewhat at a lower frequency
by using the boost control.
The "BANDWIDTH" control adjusts the width of the high frequency
boost curves. This bandwidth control is continuously variable from sharp to broad.
Operating the key switch away from the "IN" position is equivalent to
returning ALL boost and attenuate controls to their zero positions. The amplifier
remains in the circuit.

GENERAL

INSTALLATION

600 ohms, matching, transformer input.
Can be strapped for 250 or 150 ohms.
Transformer, feeds a 600 ohm load.
Can be strapped to feed loads of
300 or 150 ohms.
When installing in a unbalanced circuit,
strap one input terminal and one output
terminal to the chassis ground terminal.

Operation