Bohlender-Graebener Radia 520i loudspeaker Specifications

Sidebar 1: Specifications

Description: Two-way, floorstanding, sealed-box loudspeaker with line-source ribbon upper-frequency driver. Drive-units: 50" by 1.1" planar-magnetic coaxial midrange and HF ribbon; two 6.5" cone woofers. Crossover frequency: 350Hz. Crossover slopes: fourth-order, Linkwitz-Riley. Frequency response: 70Hz-20kHz, ±6dB. Sensitivity: 88dB/2.83V/m. Nominal impedance: 4 ohms. Recommended amplification: 50-250W continuous, 300W peak.
Dimensions: 70.25" (1800mm) H by 7.75" (200mm) W by 2.75" (70mm) D. Base: 13.25" (340mm) W by 17.25" (442mm) D. Weight: 59 lbs (26.8kg).
Finishes: Black anodized aluminum tower, black or mahogany base.
Serial numbers of units reviewed: 02222, 02223.
Price: $3998/pair. Approximate number of dealers: 125.
Manufacturer: Bohlender-Graebener Corp., 1780 Forrest Way, Carson City, NV 89706. Tel: (888) 875-2627, (775) 884-1800. Fax: (775) 884-1276. Web:

1780 Forrest Way
Carson City, NV 89706
(888) 875-2627