IBM 6648 User Guide - Page 127
Specifications — desktop model (A20), Average sound-pressure levels
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Input kilovolt-amperes (kVA) (approximately): Minimum configuration as shipped: 0.08 kVA Maximum configuration: 0.30 kVA Note: Power consumption and heat output vary depending on the number and type of optional features installed and the power-management optional features in use. Heat output Approximate heat output in British thermal units (Btu) per hour: Minimum configuration: 240 Btu/hr. (75 watts) Maximum configuration: 705 Btu/hr. (207 watts) Airflow Approximately 0.5 cubic meters per minute (18 cubic feet per minute) Acoustical noise-emission values Average sound-pressure levels: At operator position: Idle: 38 dBA Operating: 43 dBA At bystander position-1 meter (3.3 ft.): Idle: 33 dBA Operating: 37 dBA Declared (upper limit) sound power levels: Idle: 4.8 bels Operating: 5.1 bels Note: These levels were measured in controlled acoustical environments according to procedures specified by the American National Standards Institute (ANSI) S12.10 and ISO 7779, and are reported in accordance with ISO 9296. Actual sound-pressure levels in your location might exceed the average values stated because of room reflections and other nearby noise sources. The declared sound power levels indicate an upper limit, below which a large number of computers will operate. Specifications - desktop model (A20) Dimensions Height: 140 mm (5.5 in.) Width: 425 mm (16.7 in.) Depth: 425 mm (16.7 in.) Weight: Minimum configuration as shipped: Maximum configuration: 11.3 kg (25.0 lb.) 9.4 kg (20 lb.) Environment Appendix B. Specifications 113
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