are you sharing the air space or building a divider to give each driver its own air space
these speakers or not made for low end bass these woofer are meant for mid bass high bass
6.5'' High Power Subwoofer
Non-Press paper Cone
Specially Treated Foam Edge Suspension
1.5'' High Temperature Aluminum Voice Coil
Magnet Weight: 40 Oz
Impedance: 4 Ohm
Fs: 80Hz, Qms: 4.05, Qes: 1.3, Qts: 1.2, SPL: 87(dB), Vas: 6.8(Cuft)
Mounting Depth: 3"
Rubber magnet Boot Cover fers are
there is only 3 " of mounting depth needed i would build you door pannel out fiberglass a door pod and mount them on the door if you have a factory speaker there . then run to the amp and turn the x-over on to high pass and them use them as a mid bass driver up front for the front sound stage for get about them as a subwoofer get the lanzar 10's or 12's
i mounted a set of ma audio 8" subs on my 03 s-10 door the speaker fit in the 6.5 location had to trime the door metal and space them out a little cause the 4.75 mounting depth.it worked and then i ran the them in 2 ohm stereo to my 4 channel amp and used the high pass crossover to run them as a mid bass driver works great for me . ma audio 500 watt dual 4 ohms 8" subs each i had 250watts to each sub.
you could build a small enclosure just big enough to fit the 6.5 woofer you could build a dual camber enclosure like 8wx5dx8h internale air space would be 0.18
15 wx5dx8h would give you 0.347 share the air space this is internal air space
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