5. Current Limiter Circuitry
Protection against shorted and low impedance loads is provided with
dependable current limiting as well as protection against overloaded power
supplies and input overload.
6. Protection Indicator LED's (Including Thermal Warning)
The LED's illuminate when the protection relay is activated in the following
situations.
1) Short-circuit
2) D.C. drift
3) Turn-on delay
The LED's also flash when either of two heat sinks reaches more than 105°C
in temperature.
7. Signal Presence Indicator LED's
The LEDs glow when more than –30dB level signal is fed to the inputs
regardless of the input attenuator setting and output power level. They are
helpful to assure that sufficient input signal is fed to drive the amplifiers.
8. Peak Indicator LED's
The LED's actuate by means of an input/output comparator, and glow when
the output signal is clipped.
9. Ground Terminal Strip
Provision for isolating chassis ground from signal ground is provided on the
rear panel.
10. High Pass Filter Switch
A switchable 15Hz high pass filter (12dB/octave) is provided to prevent
damage from subsonic frequencies.
11. Heavy aluminum Die-Cast Panel
The power amplifiers are constructed to withstand even the roughest use on
the road. Their aluminum die-cast front panels are mountable in standard
19-inch rack. A pair of sturdy carrying handles provide protection for the
front panel controls and easy handling.
12. Mono/Stereo Mode Switch
An external slide switch provides quick and easy conversion for
determining the power amplifiers' operating configuration as a single or dual
channel amplifier.
13. Two Regulated AC Supplies (applicable to P-300D)
The P-300D is designed in a true dual-mono configuration. There are two
completely separate amplifiers sharing only a common chassis and AC cord.
Even the circuit breaker AC switches are separate.
The P-150 and P-75D are designed in dual-mono configuration, but share one
power transformer and circuit breaker AC switch.
- 3 -
Features
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