Great Vintage Loudspeakers

Great Plains Audio is pleased to reintroduce one of the finest low-frequency loudspeakers ever built, the Model 515-C Series Low-Frequency Loudspeaker. The Model 515-C is part of GPA’ s new Classic Series of loudspeakers, all of which are hand-made, incorporating precision manufacturing practices, a distinctive paint scheme, and featuring the superb sonic performance that can only be achieved through the use of massive AlnicoV magnetic assemblies.

In addition to the powerful AlnicoV motor structure, the GPA Model 515-C Series Low-Frequency Loudspeaker utilizes a relatively light cone assembly. The result is a low-frequency loudspeaker that exhibits the highest possible conversion that is ideal for use in bass-horns, direct radiator enclosures, or in multiple arrays of low-frequency units.

Digital Ready? Of course!

The amount of low frequency program material found in today’s digital recordings is much greater than in other recorded media. When a loudspeaker system accurately reproduces such sounds, the result is impressive. When it does not, the results can often been unbearable to listen to. Most manufacturers, attempting to make their speakers “digital ready”, realize that substantial changes must be made in their speaker designs if they are going to be able to keep up with the audio found in the digital world of today. Great Plains Audio’s 515–C Series Low-Frequency Loudspeakers are able to respond to the demands of digital music and sound effects accurately and do so with extraordinary linearity. Utilizing a lightweight cone, high-compliance suspension, a voice-coil of edge-wound copper ribbon, and a design that provides axial retention of the lowfrequency voice coil in the magnetic gap at all times, the 515-C Series is an outstanding performer in all venues.

When used in a properly designed bass horn or direct radiator enclosure, they exhibit tight bass, excellent transient response, and extremely accurate low frequency sound reproduction.

Great Plains Audio’s dedication to manufacturing loudspeakers of the highest quality that perform with equal excellence is exemplified in our new Classic Series of loudspeakers. This series reintroduces to the audio world speakers of timeless design, and features the sonic qualities of AlnicoV magnetic assemblies. This combination has resulted in an evergrowing series of loudspeakers that can be used as direct replacements for, or companions to, vintage loudspeakers of the same design.