johnathon007
New Member
I know you are probably tired of answering my questions but what would a good sensitivity be for a 4" woofer to run fairly loud at 20 feet or more if possible ? And what kind of amp am i looking at [if its huge ill probably just buy one]? power isnt really a problem becuase i have over 100 rechargable batteries laying around here [im going to need a charging circuit for them but ill worry about that when i get to that part]
Edit > i found a calculator but i think it might be having problems it said i would need 1000 watt apm to run a single 25 watt speaker 1 foot from me with a 89DB SPL, i think something has to be wrong with that calculator becuase my car system has a 5k watt amp and you can hear it for over a 1/4 mile when i turn it up.
Edit > i found a calculator but i think it might be having problems it said i would need 1000 watt apm to run a single 25 watt speaker 1 foot from me with a 89DB SPL, i think something has to be wrong with that calculator becuase my car system has a 5k watt amp and you can hear it for over a 1/4 mile when i turn it up.
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