sundownz

Cross brace finished for the baffle... just need to build the baffle itself now : Looks pretty strong to me

Framed the back wall into place on the front (also framed into place on the back as pictured before) -- starting to frame in to place the woofer baffle in : Back chamber is 5 ft^3 before the displacement of the 2x4" lumber + any other bracing I decide to add. Figure I'll end up with around 1 cube per driver as I plan to reverse mount the subs (no sub displacement).

TOP of the box is OFF... back wall slid back to where I want it. I have around 38 cubes to work with in this position. I can use the back wall... it is 6 layers of MDF with 2x4" lumber bracing, very sturdy.

The last side is cleaned off... starting on the inside of the box: Part of the floor had a bit of a hump from moisture -- side closest to camera -- had to grind that down so I can slide the baffle in.

The original owner of this truck almost build a solid concrete baffle just like that

You are correct

Top is 100% cleaned off... broke off a grinder disc on some of the concrete residue which shot off, hit my finger and leg (ouch), and then broke a fluorescent light *laughs* But... I got it done!

Have the one side and about 2/3 of the top sanded down smooth with a grinder after foam removal... got most of the foam off of the other side so I can grind it down soon too:

Concrete is OFF... working on the foam. I think I can re-use the shell and just layer it up with actual wood We are also working on a 4th order wall for 12 x 12s today... so we are busy!

We got it broken loose... just need to feel tough enough to carry it all to the dumpster as it is one piece.

Yep! Has your name on it

Andy, I think I have your wire in this truck

May have to go back to the house and get an air chisel... or something. Going to think it over for a bit and see what I can come up with.

Taking out the concrete is going to be difficult... has a metal mesh in it.

* Everything out of the back * Baffle Out !

I'll keep adding power as long as it keeps getting louder -- but my goal is to build an efficient setup so initial testing will be done on less than 5kw.

Not 100% sure what I'm doing yet Once I get it out I am going to take a good look at it and consider my options. I have thought about some sort of band-pass but I may end up going back regular ported wall.

Got this truck through some horse trading... current setup was tested to do 154.3 dB @ 61 Hz with two Z15s and a clamped power of 5000 watts total. I want a more efficient setup so I am tearing it all down! Some pics of the current setup with the cap off and starting to tear down : Old wall has a great baffle - 7 layers thick - but the outside is too thin. It is one layer of MDF with super dense foam sandwiched between that and a thin layer of wood (I had that peeled off before the pics). It does have concrete above the front chamber, though, so that is not too bad. All in all I think it could be better so I am going to rip it out!

Not necessarily accurate, "with a price" 25% more power w/ lower voltage so I'd expect closer to 33% with equal voltage. $699 * 1.33 = $931 3500D was 850 on pre-sale and just a hair over 1000 MAP price... and you get a 2-year warranty vs. 1-year. So ~100 extra bucks at regular cost for another year coverage on limited warranty + our discounted replacement program for 5-years. Those that pre-ordered got a lower $$$ to watt ratio. So price scales in a pretty linear fashion with all things considered

I only got the AQ on trade this afternoon -- so what you see is 100% of my testing so far on it.

And again - I am not out to trash any products! The AQ amp IS less expensive so it is a great value product - seems to be well built all in all especially @ the cost.

The power difference measured correlates very well with the parts count difference in the output section. I have all of the subs out of my Jeep or I'd try them both at 1/2 ohm.

Power Test Completed. I know someone will ask these questions SO READ THIS FIRST : 1) AQ-3500D Tested First - Battery Bank had a charge for several hours from our bench power supplies 2) SAZ-3500D Tested Second - Only a few minutes behind the AQ-3500D Test 3) THIS IS WHY the 3500D had much more voltage drop, I had the entire surface charge gone from the batteries 4) Both amps set wide open to be apples to apples. ----- AQ-3500D POWER TEST: http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2679.MOV AQ-3500D VOLTAGE TEST: http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2681.MOV POWER : 2400 Watts AMP VOLTAGE (measured) : 71 V AMP CURRENT (calculated) : 33.8 A ACTUAL IMPEDANCE (calculated) : 2.1 ohms SUPPLY VOLTAGE : 14.22 V ----- SAZ-3500D POWER TEST: http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2682.MOV SAZ-3500D VOLTAGE TEST: http://www.sundownaudio.com/misc/_AMP_POWE...0D/CIMG2684.MOV POWER : 3020 Watts AMP VOLTAGE (measured) : 77.2 V AMP CURRENT (calculated) : 39.11 A ACTUAL IMPEDANCE (calculated) : 1.97 ohms SUPPLY VOLTAGE : 11.99 V