39057 case:tube TUBE - L.H. front control valve port to upper cylinder port, rear section

Image Dynamics IDQS10D4 10" 200W RMS Dual 4-Ohms Shallow Subwoofer
Image Dynamics Features: High Excursion Design allows acoustically linear bass output at all rated power levels. Parabolic Santoprene Surround to ensure cone linearity and control. Poly/Mica Cone for strong and distortion free bass reproduction while still reproducing all the musical nuances. Nomex Spider for consistent control throughout the piston range and life of the woofer. || Poly Carbonate Neck Joint allows the woofer to handle more raw power without any mechanical failure or flex and isolate the heat from the BASV voice coil former from the cone. American Made Flat Wound Extended Voice Coil gives our woofers higher magnetic flux (strength) and more voice coil “traction” in the magnetic gap with over 1.75” of linear travel in the magnetic gap. || Extended Y-35 Motor Structure allows the voice coil to move freely without any mechanical bottoming out while producing a very powerful flux field. Field Replaceable Cone Assembly can be changed in 10 minutes with only 16 screws and alignment shims that come with our recone kits. || Parameters: Power Handling: 200W RMS | 350W Peak. VC Impedance: 4-Ohms + 4-Ohms, Test Impedance: 2-Ohm, Driver Displacement: 0.054, Fs: 50 Hz, SD: 390.57 sqCM, Vas: 14.239 Ltr, Cms: 65.736 M/N, Mms: 159.759 g, BL: 8.777, Qms: 6.233, Qes: 1.216, Qts: 1.017, No: 0.141%, Spl: 84 dB, Xmax: 7.5mm, Voice Coil: 2.0", Voice Coil Height: 0.98", Voice Coil Type: Kapton Former, Voice Coil Wire: Copper, DC Resistance: 1.9 Ohms, Voice Coil Induct at 1kHz: 0.34 MH || Frequency Response: 50-500Hz, Resonant Freq: 50 Fs Hz, HE-Magnetic Gap Height: 0.393", Motor Structure: 42.95 oz, Mounting Depth: 3.5", Cutout Diameter: 9.56".