Mike Howard Posted September 20, 2016 Report Share Posted September 20, 2016 been awhile since i posted last, so here goes.. system run down 99 explorer sport 4.0 4x4 1 0ga power run to the back big 3 done in 0ga 1000ca battery up front optima yellow top in back grounds are to chassis with 0ga wire 2- brz1700.1 amps running 1 ohm per amp 2- soundqubed hds315 dual 2ohm 8cf box with a small octoport ( free box to start out with ) pionner avh280bt head unit pac lc-1 bass knob we did a 147.1db and clamped at 711rms per amp at 43hz. we did that on stock 95amp alt and since then installed a H/O 250amp. by ear seems a little louder, clamped it and is at 768rms at 14.5v on rear battery so gained a little.. have skyhigh 2/0 coming to replace the 0ga power run, hoping to get more voltage to the rear and up the rms again, will see come next weekend.. our delema is horrible box rise i was told so we are not getting close to rated from our amps. did a clamp test at .5ohm and got 646rms. have the plans and cut sheet for a spec box for these subs but am wondering a box change/ more port area could help the box rise and gain us rms? we are just starting out on the audio scene.. we have plans on building a 4th order b pillar wall and am curious on something. we could do a 4 hds315 4th order with our current amps. friend said it should be louder because of more cone area, or do a 2 hds315 4th order with a cab1600.1 or ta1.3000d amp at .5ohm.. curious on thoughts as we are doing our 2nd comp oct 1st.. and we are aiming for a 150. so spec ported box on more power, 4th with 2 subs on more power, or 4 15s in a 4th with our current amps and see how it goes.. Link to comment Share on other sites More sharing options...
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