Newbie here, amplifier output?

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never0101

Member - Posts: 1

Joined: February 09, 2006

Location: United States

Posted: February 09, 2006 at 8:06 PM / IP Logged

howdy. i had a question about how different ohm loads affect the output of an amp. i have a Memphis 16-st500d amp, rated for 500w @ 2 ohms. i plan on using this to power a jl10w7 sub, rated for 3 ohms. i was wondering what power the sub would be seeing, since its 3ohms instead of 2 where the amp is rated? thanks for any help!

2002 Grand Prix GTP

13.65@99.91

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stevdart

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Joined: January 24, 2004

Location: Pennsylvania, United States

Posted: February 09, 2006 at 9:25 PM / IP Logged

Find the middle ground between the 2 ohm and the 4 ohm specified ratings (the amplifier will also be rated at 4 ohms). BTW, the sub is not rated for 3 ohms...it provides an impedance of 3 ohms. If you're pondering an Ebay sale and can't find this info, you can probably assume that the 4 ohm output would be at 250 watts. Which puts output at 3 ohms at about 375 watts.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

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r_wern

Member - Posts: 36

Joined: February 05, 2006

Location: United States

Posted: February 10, 2006 at 12:07 AM / IP Logged

Hey! I used to work for a dealer who sold Memphis, and I know quite a bit about their stuff. That amp is way underpowered to run a w7. You should use a MC1000D or, if you are on a budget, at least the PR1000, the entry level 1000 watt Memphis amp. They also make a 2400 watt class D monoblock, but that might be a little much. I'm just assuming you like Memphis....

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Newbie here, amplifier output?

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