Educated Guess - What spec is my amp?

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Educated Guess - What spec is my amp?

Postby richard_p88 on Tue Sep 12, 2006 5:23 pm

Its a BassForce BFA-600 600w max. I'd like to know probable RMS.

4Channels bridgeable in the following ways. (max)

4x150
2x300
2x150 1x300

It has a single 25A fuse in it.

I can't find ANYTHING about it on the internet, and it has no paperwork. My brother got it cheap from a friend and came in the car when i bought it from him.

I'm looking to upgrade my sub, so it'd be nice to have a figure which it's actual power lies around.
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Postby Rhinopower on Tue Sep 12, 2006 6:04 pm

there is a calculation to work out RMS, you need to know the fuse size, and the lowest impedance the amp can go
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Postby richard_p88 on Wed Sep 13, 2006 12:08 pm

I'll try to find out impedence, it may be printed on the underside or something.

As stated though, it has a 25A fuse. Whereas my brothers JBL Also 600W 4/3/2 channel has 2x20A. I'm guessing buying one of those would be an upgrade, despite the 'box figures' being the same. :-?
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Postby richard_p88 on Thu Sep 14, 2006 4:47 pm

There is a sticker on the back which is partially missing, looks like it says speaker - 4 (ohm).

Take it as 4 ohm lowest with 25A fuse.

Does anyone know the calculation Rhinopower mentioned?
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Postby GeForce Junky on Thu Sep 14, 2006 4:57 pm

I have the same problem.

I have a Boschmann PCH-6480, which like yours says 600w. It also says 4/3/2 channel bridgeable. I guess its 4 ohms and it has a 40A fuse.

Can anybody help?
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Postby richard_p88 on Thu Sep 14, 2006 6:15 pm

Think i've found the answer. Although there is no mention of ohms.

http://www.talkaudio.co.uk/vbb/showthread.php?t=24880

I'm probably looking at 45w RMS per channel, as no doubt mine will be less than 60% efficient.
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Postby GeForce Junky on Thu Sep 14, 2006 9:24 pm

Awesome.

13.8 x 40 x 0.6 = 331W RMS total output. - should be good for my 350W RMS sub :)

Thanks
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Postby JohnBoy_DIY on Thu Sep 14, 2006 11:14 pm

http://www.crutchfieldadvisor.com/ISEO-rgbtcspd/learningcenter/car/subwoofers_wiring.html?subs=1
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