Need help replacing 3x10" MTX Blue Thunder subs

[aaron9060]

Hi, I fear my old MTX 10" woofers aren't kicking like they used to, so I want to replace them - but keep the enclosure (which apparently makes a nice scratching post).

The enclosure is powered by an MTX Thunder 2300 amp with these specs -

150 Watts x 2 into a 4 Ohm load with less than 0.05% THD+N

300 Watts x 2 into a 2 Ohm load with less than 0.1% THD+N

600 Watts bridged into a 4 Ohm load with less than 0.1% THD+N

Here's a closeup of the writing on the magnet, 12ohm? Really? That sounds high to me.

And here's how the subs are wired up to the terminal.

I calculated the enclosure's area to be 1.23 ft^3. But where the hell do i find 3 12-ohm woofers?

Any suggestions or advice are much appreciated.

Aaron

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[aaron9060]

OK seems like there are no 12-ohm woofers to replace these with, but, I can get 3x 2-ohm subs wired in parallel to achieve a 6 ohm load. Not the 4 ohm load I was hoping for, but the amp should do fine.

 

[elancohen92 10+ year member]

well it would be 5.67 ohm load.

 

[Kangaroux 5,000+ posts]

When you wire stuff in parallel it brings the impedance down, not up. You're talking about series.

If I were you, I would look into an amp that is 1 ohm stable so you could wire 3x 4ohm subs down to 1.3 ohms, or downgrade to 2x 2ohm subs. You would be able to do 300 watts to each sub @ 2 ohms.

 

[elancohen92 10+ year member]

When you wire stuff in parallel it brings the impedance down, not up. You're talking about series.
If I were you, I would look into an amp that is 1 ohm stable so you could wire 3x 4ohm subs down to 1.3 ohms, or downgrade to 2x 2ohm subs. You would be able to do 300 watts to each sub @ 2 ohms.

Yeah i didnt see that he put parallel. I think he should either get a 1 ohm amp or upgrade to 2 15"s. cone area FTMFW! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[aaron9060]

Right, sorry, I meant series. This wouldn't run my amp any harder but would put out less power, right? Say, 400W instead of 600W? I was hoping to avoid buying a new amp; i love my blue thunders! My cabin speaker amp is also a blue thunder, and they look lovely together.

* there was a picture here but the forum registration is borked and i can't post pics. //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif