Offshoreonly.com - Making sub enclosures

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It's because this particular sub was designed to be in a free air application.

Yeah, I think it was the clamshell part that made my mind instantly go to bandpass. Isobaric is something that isn't really recommended except to people that like to waste money or have more drivers than someone else.

[ATTACH=CONFIG]534572[/ATTACH]
Who needs enclosures, look at this crazy chit!!

Quote:

Originally Posted by MILD THUNDER (Post 4234848)

Thanks Rob! I guess I can try the PDX-5M, and if i feel its underpowered, I can easily upgrade to the PDX-V9 later, since its basically same dimensions and hookups.

if you dont like it ill buy it from u .. always need a good amp

Here are my 4 --- 5.5" tube subs---giggle

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Quote:

Originally Posted by ROB FREEMAN (Post 4236788)

if you dont like it ill buy it from u .. always need a good amp

I'll let you know what I decide to do with it Rob. Thanks

I have 4 JL Marine free airs that POUND, most of the quality is in the seat face, mines made of 2.5" of wood and fiberglass to resist the seat facing flex, thats where quality comes to play for feeling and sound, I am a fan of free air with proper amp wattage, I run all 4 off a JL1000@1OHM (STABLE) and 2 JL 4 channels to hadle all the other speakers, the boat sounds amazing, to use free air you need a good clean true watt amp...the sound is bad azz...

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[ATTACH=CONFIG]534672[/ATTACH][ATTACH=CONFIG]534673[/ATTACH]

Hey Tim, do you think i'd be better off running the Fosgate amp I have for the subs?

At 2ohms, it puts out 1000W RMS according to the birth sheet. So thats 500w to each sub? the subs state they can handle 300W per sub.

Or, the PDX-V9, which puts out 600w RMS at 2ohm to the sub channel, so 300W per sub?

Quote:

Originally Posted by MILD THUNDER (Post 4238200)

I personally like Alpine over the Rockford, I run the JL because of the track record and the 1 ohm stability, is that Alpine 1ohm stable? if you can run 1ohm you will get the most power out of it but not many amps can, they overheat and shut down...I am no stereo genius, but I have done many over the years in auto and boat...

The older stuff seems to be great quality like the old punch amps and such, but the newer Rockford does not seem to be a true watt amp... great rule of thumb for amps is 1.00 a watt.... if you pay that you will get good quality power...

A big power amp will push a free air sub properly, I like the free air because if your Fountain is like my Cig the extra space is much needed under seat for things.... and if your seat is not super thick and subs move the seat for sure back it with 3/4" plywood to stiffen it up, so many people overlook that stuff...

Joe I need that amp back for another project I want to do in 2018 :party-smiley-004: