*Open Box: The box has been opened but item never installed. It comes with the original box and another PCB board that needs to be installed and connected with a ribbon inside the amplifier. *Clearance Sale Item: May be new Sealed Box, Open Box or Display Model. Item is considered new and comes with full manufacture warranty. All Clearance Sale Items are subject to a 7-day return policy for manufacturer defects. Crown’s P.I.P. ®–AMCb. PIPTM modules are designed to quickly install in the back of many Crown amplifiers. PIP stands for “Programmable Input Processor.” Each PIP has features that expand the capabilities of your amplifier, enabling you to customize it for your particular needs. The P.I.P.– AMCb is a versatile monophonic Acoustic Modeling Crossover (version b) that plugs into any PIP-capable Crown amplifier. It combines the functions of a crossover, equalizer and compressor. DIP switches, plug-in SIP resistors and convenient jumper blocks make it easy to configure any of its powerful operating features. FEATURES Variable 24-dB/octave (4th order) Linkwitz-Riley crossover with state variable topology. Variable 12-dB/octave (2nd order) low-frequency filter with Q=2 for vented box equalization. Variable 6-dB/octave high frequency shelving network with variable 12-dB/octave high-frequency low-pass filter for constant-directivity horn equalization. Variable threshold, feedback/error driven compressor/limiter with infinite compression ratio. Configurable compressor control path. Fully configurable outputs to supply the amplifier channels. Configurable “daisy chain” output. 3-pin balanced XLR connectors for input and daisy chain output. SPECIFICATIONS Signal to Noise Ratio: Greater than 85 dB (equivalent input noise) from 20 Hz to 20 kHz. Common Mode Rejection: Greater than 90 dB at 60 Hz; greater than 60 dB at 20 kHz. Crosstalk: Greater than 46 dB below the signal level at 20 kHz. Harmonic Distortion: Less than 0.05% THD at 1 kHz with any setting and no compression. Less than 0.5% (either channel) at 800 Hz crossover with 6 dB of compression. Input Impedance: Nominally 50 kohms balanced and 25 kohms unbalanced. Maximum Input Level: +18 dB at mid-band. Other bands will vary with equalizer amplitude boost. Nominal Gain: Unity ±0.5 dB. Crossover: Linkwitz-Riley, 24 dB/octave with state variable topology. Crossover frequency: 80 Hz to 8 kHz, controlled by plug-in SIP resistors; Factory set to 800 Hz with options of 500, 1200, 1600, 2000 and 2400 Hz using the provided SIPs. Low-Frequency Equalization: 2nd order high pass filter with Q=2 for classic Thiele–Keele B6 vented system alignment. Boost: +6 dB. Roll-off: 2nd order below boost (set by filter). Boost frequency: selectable as 20, 24, 28, 30, 36, 38, 42, 44, 56, 65, 68, 102, 120, 180 Hz or flat using 9-segment DIP switch. High-Frequency Equalization: 1st order shelving network for “constantdirectivity” horn equalization. Selectable boost frequency (+3 dB): 1.8, 2.2, 2.4, 3.2, 4.0, 6.8, 10.0 kHz or flat using 9-segment DIP switch. (Bandwidth determines total boost) Boost roll-off: 2nd order above boost. Selectable upper limit roll-off: 12, 15, 16, 18, 22, 25, 26, 28 kHz using 9-segment DIP switch. Compressor: Driven by the audio and the IOC® error signal. Threshold:adjustable in nominal 2.5 V steps from 8 to 164.5 VRMS using 6-segment DIP switch. Dynamic Range: Greater than 16 dB. Low Frequency Compressor: 10 msec attack with 360 msec decay. High Frequency Compressor: 5 msec attack with 180 msec decay. Compression Ratio: ∞:1. Input: Balanced female 3-pin XLR. Output: Balanced male 3-pin XLR. Maximum Output Level: +18 dB (into a 600 ohm load). Power Requirements: When plugged into a Macro-Tech, Com-Tech® or Studio ReferenceTM amplifier, the P.I.P. receives ± 24 V power. Dimensions: 6 3⁄8 x 1 7⁄8 x 3 7⁄8 in (16.2 x 4.8 x 9.8 cm). Weight: 10 ounces (284 grams). Note: All specifications are referenced to a 0.775 V input signal.
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