Question about Hitron HRA-2200B 2 Channel 400 Watt Mosfet Car Amp Car Audio Amplifier

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8 ohm to 4 ohm

I have a Hitron HRA-2500B amp and was wondering if I could bridge (2) 8 ohm subs down to a 4 ohm? is there even a way to get tham down to 4 ohms?

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All you need to do is wire your 2 subs together in parallel. This means Hooking the positives of both subs together, as well as hooking both negatives together.

Your total resistance:

Rt = (R1 x R2) / (R1 + R2) = (8 x 8) / (8+8) = 4

A ---------------- + ------------ +
M >| >|
P------------------_--------------_

Posted on Sep 16, 2009

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You can't bridge that amp onto a load lower than 4 ohms. So you can't bridge that amp onto two 4 ohm subs. To get the most power out of your subs is easy. Run one channel to one sub and the other channel to the other sub. 165 watts RMS is plenty for most subs.

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Hello rattle822,

A pair of JH4512-04's can be wired to 2 ohms if the subs themselves are paralleled. There's only one voice coil and it's 4 ohm. If wired in series, the final impedance to the amp would be 8 ohms. They cannot be wired to 1 ohm.

In bridged mode, your 4-channel amp is only stable down to 4 ohms. You can bridge 2 of the channels to provide a relatively low 200 watts RMS X 2. The best power solution for your subs would be to bridge channels 1 and 2 and wire one sub to it. Likewise, bridge channels 3 and 4 and connect the other sub. If you connect both subs in parallel, the impedance will be too low causing the amp to overheat and possible fail.

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Hello ronnieyannon,
A single 4 ohm speaker wired to each channel, like you have them wired, presents a 4 ohm load. And it appears that you have them connected properly. The 401s is only stable to 4 ohms when bridged, so if you were to parallel the 2 4 ohm subs in bridged mode, the load would be 2 ohms and the amp would most likely overheat and go into protection.

I'd wire them the way you have them wired.

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So. this how it goes.

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to      | |
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