Drivers and amps

I’ve been wondering a while now about the whole weight versus impact issue. My planned upgrades were due to lighten Beatrix by 12kg but I’ve had a change of heart.

I could replace the Kenwood W300s subwoofers with ones rated 400w more a piece, not only that but they play lower, and go louder by 2db for any given input signal. Trouble is, they weigh 500g more each a piece, so that’s -2kg from the 12kg weight saving.

Apart from that, I’m replacing the JBL amp driving the subs with a Kenwood one that’ll do twice the power. Trouble here is that instead of running 4x 104w rms @ 4ohm, the new amp will do 1x 1000w rms @ 1ohm. Which means that it’ll be a much higher current involved, which means more power consumption. Thankfully it’s a Class D amp compared to the previous Class A/B which means it’s twice as efficient, or in laymens terms, even though it’s twice the power, it consumes the same amount of power from the battery.

I’m also wanting to replace the top amp which is an Audio System’s amp kicking out 4x 120w rms into 2ohms, which will drive the SPL Dynamic speakers quite nicely, but they would be underpowered. If I move the current JBL amp to the top, the SPL Dynamics will receive 145w per pair, which means they’ll only be underpowered by 10w per pair which is quite good actually. It’s also 15% more efficient unfortunately, it also weighs 2kg more.

What do you think?

One Response to “Drivers and amps”

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