Loyola Enterprises

A veteran and minority owned SDB Certified Business.



757.498.6118 Ext - 109Pro-8A - Call for pricing - 8-inch 32 watt


PDFPro-8A Spec Sheet (pdf)

The PRO-8A is an accurate, highly intelligible and musical sounding loudspeaker that is well suited for the reproduction of both voice and music. The PRO-8A employs an unusually large 1.5" voice coil. This provides increased apex-driving-point cone area and greater thermal capabilities. The result is higher acoustic power output than other brands, which translates into unmatched durability and reliability at lower levels.

High frequencies are reproduced by a 1.5" piezoelectric tweeter that is mounted directly to the pole piece of the woofer. The tweeter being mounted to a stationary surface at the apex of the woofer minimizes intermodulation distortion and allows for improved time alignment over other coaxial ceiling speaker designs. An acoustically transparent dust dome mounted on the woofer cone encapsulates the tweeter offering excellent dust protection for both the woofer voice coil and the tweeter.

The PRO-8A series of speakers may be used in ported enclosures where improved low-frequency response is desired. Placing the loudspeaker in an enclosure of 1.0-ft³ with a box-tuning frequency of 75 Hz will yield a -3 dB point of 80 Hz. An 80 Hz tuning may be obtained with a port having an area of 7.0-in² and a length of 0.75".


  • 8" Wide-Range Two-Way Ceiling Speaker
  • 1.5" voice coil
  • 1.5" piezoelectric tweeter
  • Available in low and high power transformer versions(PRO-8AT5, PRO-8AT30)

Architectural and Engineering Specifications

The loudspeaker shall be a coaxial type loudspeaker with a nominal diameter of 200 mm (8"), an overall depth of 80 mm (3.15") and shall weigh no more than 1.2 kg (2.7 lb). The voice coil shall have a nominal diameter of 38 mm (1.5") and depth of 7.6 mm (0.3") and shall operate in a gapof not less than 0.92 T (9200 Gauss). High frequencies shall be reproduced by a 38 mm (1.5") piezoelectric transducer attached to the pole piece of the low-frequency device and protected from dust by a dust dome fastened to the low-frequency cone.

The loudspeaker shall exhibit a sensitivity (SPL, 1W at 1m swept 500–5,000 Hz) of no less than 96 dB on axis maintaining an essentially flat frequency response with -3 dB points at 115 Hz and 14 kHz in a 12-cubic-foot sealed box in a free field. The half-space reference efficiency shall be 2.0%. The nominal impedance shall be 8 ohms and the DC resistance shall be 5.7 ohms. The loudspeaker shall be capable of handling a continuous 30-watt (14.1 volts true RMS) shaped white-noise signal (as per EIA Standard RS-426A) with a 6-dB crest factor for eight hours.

The loudspeaker shall be the Electro-Voice model PRO-8A.

Frequency Response (±3dB) 80 Hz–16 kHz Power Handling 30 W cont. / 60 W prog. / 120 W peak
Sensitivity 1 W/1 m 96 dB Nominal Impedance 8 Ω
Voice Coil Diameter 3.81 cm (1.5") Magnet Weight 0.32 kg (0.72 lbs)
Transducers (HF) 1.5" piezoelectric Magnet Material Barium ferrite
Dimensions (Dia x H) 20.5 x 8.0 cm
(8.6" x 3.15")
Weight 1.2 kg (2.7 lbs)
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or