Image Dynamics IDMAX15 V4 15 inch Subwoofer

The Image Dynamics IDMAX15 V.4 handles 600 watts RMS (coils in parallel) and 1200 watts peak. Power handling varies by enclosure: 1000 watts maximum in the 1.5 cu ft Compact sealed alignment, 900 watts in the 2.0 cu ft Universal alignment, and 800 watts in the 3.0 cu ft Audiophile alignment. These figures reflect what the 575 ounce motor, 2.5 inch Aluminum BASV former, and 60mm voice coil height can sustain continuously.

Use extreme caution or avoid it. The IDMAX15 D2 has Re of 1.4 ohms per coil. Wired in parallel, the combined load is approximately 0.7 ohms, well below the 1-ohm stable rating of most amplifiers. Most Class D monoblocks will enter protection or fail at this load. Wire the D2 in series for 4 ohms. The D4 wired in parallel presents exactly 2 ohms and is compatible with all 1-ohm stable Class D monoblocks. If 1-ohm operation is required, the D4 is the correct variant.

Both share the field-replaceable cone assembly, Glass Fiber/Pulp cone, Aluminum neck joint, and Parabolic Santoprene surround. The Image Dynamics IDMAX15 V.4 steps up to a 575 ounce motor from 400 ounce, a 2.5 inch voice coil from 2.0 inch, 22mm Xmax from 19mm, 600 watts RMS from 500 watts, and 934.82 cm2 of cone area from 547.39 cm2. It requires a minimum sealed enclosure of 1.5 cubic feet versus 0.65 cubic feet and weighs 43 lbs versus 28.45 lbs. Choose the IDMAX12 for standard trunk builds. Choose the IDMAX15 for large vehicles where the IDMAX12 runs out of output before filling the cabin.

Image Dynamics recommends sealed enclosures of 1.5 cubic feet (Compact), 2.0 cubic feet (Universal), or 3.0 cubic feet (Audiophile). These are net internal volumes including driver displacement of 0.26 cubic feet. Ported enclosures run from 2.0 cubic feet at 30 Hz tuned through 4.0 cubic feet at 27 Hz, reaching F3 at 27 Hz in the Audiophile configuration.

The IDMAX15 is appropriate for large vehicles with genuine cabin volume: full-size SUVs (Suburban, Expedition, Tahoe), full-size vans (Sprinter, Transit), crew cab trucks with rear seat removed, dedicated audio competition vehicles, and custom van conversions. In a compact car or standard sedan trunk, the enclosure volume requirements (1.5 to 3.0 cubic feet sealed, not including driver displacement) and the 10.43 inch mounting depth make installation impractical. The Image Dynamics IDMAX12 V.4 is the more appropriate choice for those applications.

Yes, in the right class and with the right build. The IDMAX15 with its 30 Hz Fs and ported Audiophile alignment reaching F3 at 27 Hz produces exceptional deep bass extension. The high Qts and elevated sealed Qtc values mean this is an output and impact driver rather than a flat-accuracy driver. For competition classes that reward deep bass extension and maximum output in large vehicles, the IDMAX15 is the appropriate choice. Audio Intensity's owner Scott Welch is an active sound quality competition judge.

The Image Dynamics IDMAX15 V.4 weighs 43 lbs. Two people are strongly recommended for installation. The baffle and enclosure must be structurally capable of supporting the driver weight over years of road vibration. Use a minimum double-thickness baffle (1.5 inches) and ensure all mounting screws engage into solid material. The 10.43 inch mounting depth requires planning rear clearance behind the baffle before cutting the enclosure.

The Image Dynamics IDMAX15 V.4 carries a 1-year limited warranty against defects in materials and workmanship when purchased from an authorized Image Dynamics dealer. Audio Intensity is an authorized dealer. Every unit we sell is brand new current production with full warranty coverage and lifetime tech support.