opti1535d enclosure recommendations and ideas.

[truckramrod 10+ year member]

I need advice with my current and future setups.

Please anyone with lanzar opti1535d experience, please speak up!

I currenly have it in a 4.35 cube net Atrend 15lsv enclosure tuned to 36 hz with 48.5 sq in of port area. Its in my ext cab sonoma sub firing up behind drivers seat and port firing to the driver side at the base of the b pillar. Its powered by a Lanzar HTG2600d at 0.6 ohm.

Here is the odd part. It metered a 139.9 at 44 hz and when I inverted the sub so the basket/motor was exposed, I then metered a 141.2 at 44 hz. For some reason I was thinking when I metered again I hit a 142.1 but that's likely just wishful thinking.

Apart from the airspace change from inverting the sub and the 5 ft of additional 16 gauge speaker wire used to connect the woofer when mounted normally, I don't know that anything else changed. I changed the phase setting but that didn't seem to make a difference on the TL.

Lanzar recommends 2.5 cubes tuned to 35 hz and giving what I've experienced I can't take that to be accurate at all. http://lanzar.com/manuals/OPTI1535D.pdf

any opinions?

Moving onward.

I have plans to install 2 opti1535ds in my truck on 2 planet audo BB2400.1d amps, with a 9A31 and additional 1/0 cable and maybe an 2nd 145 amp alt.

I have 4 4" aeroport kits that I plan on using. That will give me 50 sq in of port area.

I would like to have a low 30-33 hz tuning. I know this may be detrimental to TL scores but I prefer the lows to fill in nicely.

my max dimensions for a box in my truck are:

40w X 18T X 22D which I've found with out sub disp is 7.08 cubes and the lenght of 4 4" aeros to be 15.7 long.

What I'm afraid of is moving down from 4.3ish to 3.5 per woofer and losing output while having a better box and more power. I know I can try it and go from there but I have a few shows I'd like to compete in this month so I'm trying to prevent any wasted time.

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[truckramrod 10+ year member]

Can anyone at least shed some light on the inverted vs. normal issue?

 

[Buck 5,000+ posts]

Weird things can increase SPL score, but with that said, I don't know why it would've changed it that much. I could only guess.

 

[truckramrod 10+ year member]

well I remember once that thegreatestpenn said he shortened his speaker wire between sub and amp and gained 0.6 but I think 0.6 and 1.4db are quite different. I'm mainly trying to ensure that it isn't an issue of box volume requirements.

I'm planning on running 8 or 10 gauge quality copper wire to prevent any unwanted issues.

Any opinions on reasonably priced large gauge speaker cable.

I'm checking on Amazon, not many decent deals to be found.

Audiosavings has some Cadence 8 gauge wire that is reasonably priced.

25 ft of 8 gauge for $15 shipped. That seems pretty good.

I will probably get this:

http://www.audiosavings.com/products/Car-Amplifier-Power-Cable/CADENCE-8-GAUGE-49-FEET-BLUE-AMP-POWER-GROUND-WIRE/49+FEET+8G75M-BLUE.aspx