Siefert Research MAXIM 111-D with DynAudio D-21 Tweeters * Bookshelf Speakers

Description: Two-way, reflex-loaded stand-mounted loudspeaker system. Drive-units: 1" (III) 0.8" (IIID) dome tweeter and 6.5" woofer. Frequency response: 42Hz–24kHz ±3dB (III), 46Hz–32kHz ±2dB (IIID). Nominal impedance: 8 ohms. Sensitivity: 86dB/W/m. Minimum amplifier power: 25W.

Dimensions: 13" H by 9" W by 11" D. Weight: 36 lbs/pair.

Price: $499/pair (1985); $599/pair (1987); no longer available (2012). Approximate number of dealers: Sold direct

Manufacturer: Siefert Research, Malibu, CA 90265 (1987); company no longer in existence (2012).