This classroom Omni-Directional Ceiling Speaker Array has 360 degrees of seamless smooth coverage and greatly improves speech intelligibility and crystal clear powerful music reproduction. Takes minutes to install, just remove one ceiling title and drop the SD4 into any standard drop ceiling. The Vector 2 x 2 Lay-In Ceiling Speaker employs (3 smaller 6.5”) very fast transient response aluminum-woofer drivers that are very powerful and stable. Working in unison, these drivers produce clean, powerful, dynamic sound. When designing the Vector the goal was to have the single most important feature at the forefront -- good transient response ("dynamic contrast"). A transient is a sound of short duration. Good transient response can only be achieved if the speaker can deliver its output quickly and cleanly without smearing the original sound, and be completely soundless immediately after. Transients contain the essentials of sound reproduction. They provide the sharp pop from a snare drum, the cutting edge of digital sound, the dynamics of the human voice. Larger 2-way cabinet loudspeaker systems offer relatively slow transient response, and the small high-frequency horn tends to beam a narrow, blaring sound at the listener—end result, muddy sound. By replacing larger speakers with four 6 or 8" drivers increases the driver surface area, while creating more punch and a tight, more focused low-end.

The PA71 mixes an XLR microphone signal with stereo (mixed to mono) RCA signals. The combined signal is sent to spring loaded output terminals via a seven watt power amplifier. The unit also features a 1/4" Line/Powered output. The XLR input features switchable 12VDC phantom power. This unit is ideal for small room applications where a simple mix of a microphone with a cassette or CD player is needed.

Pure Resonance Audio VCA8 Vector Ceiling Speaker Array:

• Omni Directional Speaker Coverage 360° x 180° (hemispherical)
• Infinite-baffle in-ceiling speaker’s drops into standard ceiling tile openings
• Powerful – 120 Watts at 8 Ohms
• 3 - 6.5" Full Range Drivers
• Uniquely designed fire retardant ABS housing may be painted to match any décor
• Impedance: 8 ohms

Rolls PA71 MicroMix Power Amplifier:

• RCA Inputs
• XLR Mic Input
• Spring-loaded output
• Low noise, efficient operation

PRA VCA8 Speaker Data Sheet

Rolls PA71 Manual

• (1) Pure Resonance® Audio VCA8 Vector Ceiling Speaker Array
• (1) Rolls PA71 MicroMix Power Amplifier
• (50 ft) West Penn 224 Speaker Wire