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PA Speaker University 31" Trumpet - $430 (Barrington)

PA Speaker University 31" Trumpet 1 thumbnailPA Speaker University 31" Trumpet 2 thumbnailPA Speaker University 31" Trumpet 3 thumbnailPA Speaker University 31" Trumpet 4 thumbnailPA Speaker University 31" Trumpet 5 thumbnailPA Speaker University 31" Trumpet 6 thumbnail
condition: like new
make / manufacturer: University
model name / number: GH
size / dimensions: 31" x 28"
LAST ONE University PA 31" Reentrant Trumpet Speaker. Public Address Speaker. University's Model GH reflex trumpet speaker is their largest diameter production item of the late 1950~1960s. List pricing for the horn sans driver in the 1950s was $57 ($821 in today's money) meaning such an expensive investment limited University's market to the specialized audience of stadiums, convention halls, and many of the larger industrial installations.

Very high sound-pressure levels can be achieved with ID-60T driver at rated power and is specified at 136 DB @ 4-foot on-axis. This is hearing-loss sound pressure/volume so the equipment was always installed high and away from the audience. This model GH was promoted as having 'very low cutoff frequency especially suited for reproduction of finest musical programs' [at least that's what their vintage marketing brochure claims]. The exponential sound column is in excess of 6 feet allowing the low cutoff response to be spec'd at 85 Hz: a low frequency response that is impossible for any of the smaller reentrant horns. Weighs about 20 pounds.

Pricing is for one unit; of the original 8-piece inventory, I only have 1 piece remaining in stock. Drivers: also have 7-pieces of used (also in good shape) PA-30 University drivers as well as nine (9) used/NOS Atlas drivers to fit these reflex trumpets. I've decided this listing should be for the horns without drivers because the Atlas outdoor rated PD60A ($265 new) is still in production and customers may already have drivers. For clarity, I installed a demonstration driver (have 6 of the outdoor/weatherproof/70V line transformer) in several photos for size and cosmetic comparison; Will consider individual offers for those remaining drivers.

post id: 7747495281

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