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Page 40

Macro-Tech 5000VZ Power Amplifier

Reference Manual

8 Accessories

8.1

PIP

Modules

One advantage of

Macro-Tech

amplifiers is the ability

to customize them using

PIP

(Programmable Input Pro-

cessor) and

PIP2

modules. The

MA-5000VZ

amplifier

is equipped with ribbon cables that will connect either

directly, or via the PIP2 adapter to a PIP module. The

modules install easily.

P.I.P.–EDCb combines a sophisticated error-driven compres-

sor and smooth limiter with a maximum level setting and a

subsonic filter for each channel. The compressors have ad-

justable attack and release times, and can be set to track

each other. The compressors activate when a signal would

otherwise clip the input, an

IOC

error occurs, or the output

exceeds the selected threshold. The subsonic filters have

corner frequencies of 24, 28, 32 and 36 Hz.

P.I.P.–FTE uses balanced 1:1 transformers to isolate the

amplifier from the input signal. It also includes 12 dB/octave

RFI filters, 18 dB/octave high pass filters, and 6 dB/octave 3

kHz shelving networks for “constant-directivity” horn equal-

ization. Screw terminal plugs are provided for input.

P.I.P.–CLP detects and prevents overload. Its compressor is

driven by the amplifier’s built-in

IOC

error detection circuitry.

Unlike typical signal-driven compressors, it only compresses

the signal to prevent overload. It can deliver up to 13 dB of

additional headroom without being noticeable.

WARNING: Disconnect power to the amplifier when

installing or removing a PIP module.

PIPs

carrying the

PIP2

logo are configured to use one

or more of the

PIP2

enhanced features. These features

are only available in a

PIP2

-compatible amplifier. Of

course, the exact features used will depend upon the

function of the

PIP2

module. Here are some of the avail-

able

PIP

and

PIP2

modules:

P.I.P.–AMCb unites many features of the P.I.P.-XOV and P.I.P.–

CLP. It offers a variable 4th-order Linkwitz-Riley crossover and

IOC

-driven, variable threshold compressor. In addition, it

provides “constant-directivity” horn equalization and filter-as-

sisted B6 vented box equalization. Biamping and triamping

capabilities are provided via XLR connectors.

Fig. 8.1 Installing a PIP or PIP2 Module