Big Dave + 8 IXL-12's = :drool:

[mrogowski 5,000+ posts]

Pictures of the sub baffle. Notice the nice contouring in the last couple of pics:

 

[valin 10+ year member]

That is absolutely beautiful!

 

[jmanpc 5,000+ posts]

Those ports still crack me up. Otherwise, lookin legit.

 

[denim 5,000+ posts]

WOW!

 

[WOT]

How is that baffle gonna attach to the box?

 

[its_bacon12 10+ year member]

Only 2 ports for 8 subs //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

Why not just seal it up then

 

[CREATOR 10+ year member]

That baffle IS the box //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif Look back to the earlier pages to see the construction of the box and how the baffle is built into it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

LOL- u guys & MY ports! lmao. Not sure what port malfunctions u've experienced, but my ports are fantastic! NO wooshing, NO wistling, no Chuffing. ALL GOOD. Tried 5 different port lengths, went down to15 hz, and up to 46hz.

Best so far is 28 hz and with the EPIcentre- its riduculously LOUD & LOW for sitting 9 inches away from you //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif - dont get the transmission line gain from hatchback or car length //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif Have the DQX PFM set at 26hz- u can hear the difference adjusting from 23-30 so box is extending low for subs not being broken in yet.

Sealed would be too small for low extension & very difficult to seal with the shapes, power hungry too. Ported gets me my free 3db gain. COULD use a hell of a lot more power to the subs tho- these were the biggest amps I could fit- but FG made a T-10001 MONO amp thats the same heatsink- would like to get 4 of those- but then again, not trying to build the loudest truk in the country, just a good sounding, nice looking ride to tow my race trailer AND sell some SUBWOOFERS! lol

IF it was a pure DB build, I'd have a wall with 4-18's and gear in the bed, but gotta load race bikes in the bed & not a fan of large sq boxes //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

This will be MY DEMO truk for travling and showing off the MACH5AUDIO subs //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[WOT]

Oh, didnt look like that baffle had a sealed bottom from the finished paint pics

So what username on CA.com is the owner of Mach5?

Go canadian audio industry!

 

[jmanpc 5,000+ posts]

I respect the hell out of your work; it is absolutely sick. But I'm still not convinced that 2 small ports are anything better than holes in that box. I usually use one 4" port per 12... looks like you've got 2 4" ports for 8 12's.

Again, not knocking the work you've done. It's fantastic.

 

[CobraStang98 10+ year member]

Incredible craftsmanship, one of the best build ups out there.

 

[mrogowski 5,000+ posts]

Yeah, I would place Dave's fabrication work up against anyone - any day.

Here's some shots of the stripped truck and the sub box going in:

 

[valin 10+ year member]

pure sweetness....

 

[Annnarbor84 5,000+ posts]

**** is wonderful:yumyum:

 

[WOT]

cant wait to see her all buttoned up with woofer installed

 

[CREATOR 10+ year member]

Hey ALL, I'm NOT a power-user on these forums, so dont know how to do the 'quote' thing //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

WOT- , MROGOWSKI is the OWNER of Mach5Audio in Canada. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

JMANPC- ur correct. 2x4" ports for 8-12's. 1-4" port for 4- 12's. NO problem //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Me & my bassheads prefer to knotch up the 25-32 hz about 9db- WITH the EPIcenters. More of a 'flatter' low-end response, rather than an huge midbass gain.Others prefer the 45-50 hz bump. Me- cant stand 'Bonky bass', so maybe the low freq extension is more audible rather than scads of air movement? But, no obtrusive or unwanted sounds emitted from the ports. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

There isnt any more surface area for more portage and couldnt cut them in later IF I needed them so just fab'd them up in the original layup With just the thickness of the baffle 3/4"- the freq is 46 hz- dam near puked at the bonky plastic bass noise! With the 4 inch long flange- it drops to 33 hz, but the air pressure just chucked them out to the dash every time I hit the bass button! lol, So, went down to 28 hz- mmm, like that- solid- like a bag of lead in the back of the head rather than a hollow 2x4 against a football helmut! lol.

The Pick-up cab aint the most accomodating for a big stereo, but have done minivans in the past and this suited the purpose for the tow vehicle.

I have a guy back in Ontario, owns a shop- cant sell an EPIcenter- read, CANT sell 'em! Perhaps not knowing HOW to inform the user of the benefits???

I dont know why an EPI wouldnt be SOLD with EVERY subwoofer system??? The signal just isnt there- gotta put it back in and hear the music the way it was intended.

I even put an EPIcenter in my Home Theatre- 8x18"s & 13,000 watts (46 drivers for the front 7 channels). It does some damage to the house, but ooooohhhhh is there bass! lol (The Behringer Ultra-Bass1200 wasnt cutting it! )

Yes- there are 3 batteries. The low internal resistance of the Optimas doesnt require a cap bank. Have a 30 Farad cap bank- but havent needed it yet. I know some are against caps- but they have their purposes. Do they rectify the low voltage drop to the unregulated amps? NO. Will they stop ur lights from flickering and give u better sustained bass notes? Yes. SO- while they dont resolve the low voltage situation occuring from NOT enuf battery- do they accomplish something- like a band-aid solution? Yes.

Alt is puitting out 15.3 and hammertime drops to 12.4, then IF long play- seen it go down to 11.3 CANT sit in the vehicle and play it that loud for that long, so just go for a ride or charge between shows- all good! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif)

Thanks for the kind words, all. Gettin near done! Woulda bin better IF I resolved to build a Project vehicle- like an old Model-T- FORD restoration or somethin- then I woulda bin prepared for the duration! But- this was to be like a 3-week build, that kept morphing into more complex and more custom and more handbuilt than I ever intended //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Cheers~!