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I got my system metered today by tenbux1970 and it did pretty decent.141.7 at 37 hrz in the trunk car sealed up dropping to11.4 volts.system consist of two mtx9515s,in custom box subs face up and port faces rear tuned to 40 hrz.amp is orion xtrpro2400 at 1ohm,two big deka 100ah batteries,and three runs of zero front to back plus big 3 done.
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He has three runs of zero front to back big three done. It discharges and it takes time for that little alt to try to charge. Also the amp is 2 ohm stable it's being ran at 1ohm. His alt is 7 years old He also needs to charge his batts do to running them for extended periods with out charging. His car is a trunk car and most trunk cars peak in the 30s.If you aise his rpms to 3 grand it drops to 12.1.
this how I feel about audio
there is way more potential in that setup...I've only got 2 c&d batteries on a 60A (max) alt 1 run of 1/0 to the back battery, back battery grounded in the back. Sundown 3k on a RE HC 15 @ 1 ohm (set at 2000w using DMM) voltage only drops to 12.5v at idle. haven't metered it yet but know its definitely doing more than a 141.7.
Cabin gain is what explains peaking lower than the box is tuned to.
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