Pioneer Electronic Crossover SF-850 for DJ setup: Museum Object and Cultural History

The object in the museum catalogue

A metal Pioneer Electronic Crossover, Model SF-850 machine. The front of the machine is metal, silver with black type, with two rows of knobs. The top row has seven knobs. Each knob has a name as well as other markings to indicate levels. The names read from left to right: [Low Level / Low Pass / Low Cut / Mid Level / High Cut / High Pass / High Level]. Below the far left, top row knob, there is a power outlet. The bottom row has a switch, as well as four additional knobs. Above and below the bottom row knobs there are lines that form a grid. Black type, centered underneath the knobs, reads: [Slope (dB/oct)]. The Pioneer logo, in red type located at the bottom right of the front of the machine and is followed in black type by the name and model number. The back of the crossover is metal, black with white type, and inputs, outputs, caution labels, ac outlets, electronic wires, and a model plate. The back top left contains left and right inputs. Towards the center, top, there is a three way output for the left and right. There are also two caution labels, white background with black type, located on the back of the machine. The bottom of the back contains a model plate that reads: [Pioneer / Model SF-850 / 120 Volts 5 Watts AC 60 Hz]. Next to the plate are the AC outlets, followed by a fuse button and an electronic cord. The bottom of the machine has another caution label on it.

Materials, dates and provenance

• Date: ca. 1970
• Created by: Pioneer, established 1938
• Owned by: Altel Sound Systems, American, founded 1973
• Type: audio equipment
• Medium: metal , plastic and wire
• Dimensions: H x W x D: 5 1/2 × 19 × 17 in., 16 lb. (14 × 48.3 × 43.2 cm, 7.3 kg)
• Place purchased: Altel Sound Systems, Bridgeport, Fairfield County, Connecticut, United States, North and Central America
• Place made: Japan, Asia
• Topic: African American
• Topic: Hip-hop (Music)
• Object number: 2012.9.1
• Credit Line: Collection of the Smithsonian National Museum of African American History and Culture
• Data Source: National Museum of African American History and Culture

Sources and reuse

Catalogue descriptions and facts adapted from National Museum of African American History and Culture through the Smithsonian's official Open Access dataset. This record explicitly marks its metadata CC0 1.0; formatting and selection have been changed. The displayed image also has an explicit CC0 designation. The underlying object's rights statement is: No Known Copyright Restrictions Proper usage is the responsibility of the user.