Page 145 of Madisound Catalog 2008 by Speaker Components, Inc.

seas sp18r h9944 seas sp22r h9945 this 6.5 passive radiator is intended for use as an alternative to the vented port in a bass reflex cabinet in many applications a traditional port may produce air noise which is often improved by use of a passive radiator instead the cone is equipped with a 4mm screw to which you can easily affix added mass for optimum performance the passive radiator should be mounted vertically this is especially important when significant additional mass is used polypropylene cone rubber surround and injection molded zinc frame nominal impedance recom frequency range short term max power long term max power sensitivity 1w/1m voice coil diameter voice coil height air gap height linear coil travel p-p max coil travel p-p magnet weight total weight ohms hz w w db mm mm mm mm mm kg kg voice coil resistance voice coil inductance force factor free air resonance moving mass suspension compliance suspension mech resistance effective piston area vas qms qes qts ohms mh n/a hz g mm/n ns/m sq cm liters this 8 passive radiator is intended for use as an alternative to the vented port in a bass reflex cabinet in many applications a traditional port may produce air noise which is often improved by use of a passive radiator instead the cone is equipped with a 4mm screw to which you can easily affix added mass for optimum performance the passive radiator should be mounted vertically this is especially important when significant additional mass is used polypropylene cone rubber surround and injection molded zinc frame nominal impedance recom frequency range short term max power long term max power sensitivity 1w/1m voice coil diameter voice coil height air gap height linear coil travel p-p max coil travel p-p magnet weight total weight ohms hz w w db mm mm mm mm mm kg kg voice coil resistance voice coil inductance force factor free air resonance moving mass suspension compliance suspension mech resistance effective piston area vas qms qes qts ohms mh n/a hz g mm/n ns/m sq cm liters 26 21.5 1.74 130 41 22 28 1.87 230 138 19 .30 20 .45 seas sp26r h9946 seas t18rex/xfc h1353 a pp/tpx based cone matches ideally with an adaptive rubber surround th e result is an outstandingly smooth frequency response from the mid woofer a coaxially arranged pre-coated fabric dome high frequency unit with a low resonance frequency integrates with the cone driver to a point source the cone of the woofer acts as a horn loading for the tweeter and the chassis of the dome unit represents the throat of this horn this unshielded version is ideal for smaller enclosures f3 of 60hz in 0.3 cubic foot enclosure with a 1.5 diameter vent by 5 long crossover available separately voice coil resistance voice coil inductance force factor free air resonance moving mass suspension compliance suspension mech resistance effective piston area vas qms qes qts ohms mh n/a hz g mm/n ns/m sq cm liters tweeter/woofer nominal impedance 6/8 recom frequency range 40-25000 short term max power 220/250 long term max power 90/80 sensitivity 1w/1m 88.5/87 voice coil diameter 26/39 voice coil height 1.5/12 air gap height 2.0/6.0 linear coil travel p-p 0.5/6.0 max coil travel p-p 20 magnet weight 0.64 total weight ohms hz w w db mm mm mm mm mm kg kg voice coil resistance voice coil inductance force factor free air resonance moving mass suspension compliance suspension mech resistance effective piston area vas qms qes qts 4.8/6.1 0.05/0.7 2.3/7.5 1200/29 0.3/13.6 2.38 7.0/120 47.9 1.50 0.26 0.22 ohms mh n/a hz g mm/n ns/m sq cm liters this 10 passive radiator is intended for use as an alternative to the vented port in a bass reflex cabinet in many applications a traditional port may produce air noise which is often improved by use of a passive radiator instead the cone is equipped with a 4mm screw to which you can easily affix added mass for optimum performance the passive radiator should be mounted vertically this is especially important when significant additional mass is used polypropylene cone rubber surround and injection molded zinc frame nominal impedance recom frequency range short term max power long term max power sensitivity 1w/1m voice coil diameter voice coil height air gap height linear coil travel p-p max coil travel p-p magnet weight total weight ohms hz w w db mm mm mm mm mm kg kg 22 42 1.25 350 214 25 .65

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