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159.72dB outlaw @34hz - no-wall - OBS Suburban - 6 Crossfire XT3 15s - Crossfire 16k @ .35


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The 16k is in and wired at .75 to start.  Pics will follow.

 

Initial testing provided these results:

 

156.6dB sealed on the dash at 33hz

157.3dB door open on the dash at 34hz

158.4dB door open in the kick at 35hz.

 

I can't wait to play with the box and see what kind of numbers we can get out of her!

 

And then, of course, I'll drop her to .35 and see what happens ;)

1993 Suburban

6 Crossfire XT3 15s

Crossfire XS-16k

Crossfire mids & highs and amps

65ah Cmax bank

Iraggi 320a and Mechman 300a

 

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2 hours ago, crazydoublekick said:

The 16k is in and wired at .75 to start.  Pics will follow.

 

Initial testing provided these results:

 

156.6dB sealed on the dash at 33hz

157.3dB door open on the dash at 34hz

158.4dB door open in the kick at 35hz.

 

I can't wait to play with the box and see what kind of numbers we can get out of her!

 

And then, of course, I'll drop her to .35 and see what happens ;)

Nice build man, just read the past pages and love the way the grain turned out. Tuned in for more pictures 👍

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On 4/28/2020 at 3:26 PM, Joshdashef said:

Nice build man, just read the past pages and love the way the grain turned out. Tuned in for more pictures <img src=">

Thanks, man!

1993 Suburban

6 Crossfire XT3 15s

Crossfire XS-16k

Crossfire mids & highs and amps

65ah Cmax bank

Iraggi 320a and Mechman 300a

 

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24 bolt terminals!

20200425_104435.thumb.jpg.72659f509d746c984e1c1387c06a6411.jpg

 

20200425_131947.thumb.jpg.865205b9e86dcc855ab411d8f990b3be.jpg

 

20200425_135306.thumb.jpg.d658d54bdfe75c100fa145a2aa2aa8b6.jpg

 

20200425_141033.thumb.jpg.0db02d689ce6a0ed6dbdefaf5bf1c8fe.jpg

 

I decided to cut up some foam for a little extra support in the middle of the amp (since it's a million miles long).  I didn't want the middle flexing too bad.

20200425_141903.thumb.jpg.52f944100043a9329dfd452a876c8b10.jpg

 

20200425_142126.thumb.jpg.2eed878ff426e51b091eb10e473b12bb.jpg

 

20200425_143104.thumb.jpg.21387cb7e9476c6ade0f5f772c89fb26.jpg

 

Super fancy wiring diagram

84353789_20200425_154705(1).thumb.jpg.0bb4ee8b8c50cc554c7cffd7dcf8c41c.jpg

 

20200425_172047.thumb.jpg.55345b3cfd5d4785343e35559d3dd870.jpg

 

1,000,000 jumpers later:

20200425_163859.thumb.jpg.373e6ecf277a1580dd1d93a4c54f1cb9.jpg

 

20200425_172903.thumb.jpg.e57c6a04e8388f5971e873003b4162a0.jpg

 

198223926_20200425_173452(1).thumb.jpg.28509895a301a5fe800158bf2156633f.jpg

1993 Suburban

6 Crossfire XT3 15s

Crossfire XS-16k

Crossfire mids & highs and amps

65ah Cmax bank

Iraggi 320a and Mechman 300a

 

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On 3/27/2020 at 4:57 PM, crazydoublekick said:

Got the box in last weekend!  The box alone weighed about 450 pounds.  It sucked.

 

90485297_2877572212328786_6642468193744977920_o.thumb.jpg.42a69f53cfd8d93ce435bfc4ed5044dd.jpg

 

 

Mah babies.

 

90385763_2877572155662125_6607876462718484480_o.thumb.jpg.9374005a3e4d997a45a74163a92bfaed.jpg

 

 

 

90442463_2877571972328810_2385412157454942208_o.thumb.jpg.818abd35a260028a74f79e498c26f4f9.jpg

 

 

88136511_2877572098995464_3944600515580526592_o.thumb.jpg.8a4a619378440c4df400bb488d62bb3f.jpg

 

 

90392441_2877571925662148_608808294198280192_o.thumb.jpg.08b9c82706c53f4f5bcdfc679e675963.jpg

 

First rip, she busted out these numbers:

 

Legal (Sealed on dash): 155.6dB at 34hz

Door open on dash: 156.51dB at 36hz

Door open in kick: 157.05dB at 37hz

 

 

 

 

And then the M1u popped while the truck was sitting off as I pumped gas.  So, time to save for a Crossfire 16k!  After I do a lot more cabin treatment done and play with the ports, maybe we'll get a 160 out of her :)

Great scores. Any idea what power you were making? Did you clamp?

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On 5/1/2020 at 11:16 AM, bismofunyuns said:

Great scores. Any idea what power you were making? Did you clamp?

I never got a chance to clamp the m1u, as it died three days after getting it playing haha.

 

I did however clamp my Crossfire 16k when I was doing testing yesterday.  Stay tuned for that info!

1993 Suburban

6 Crossfire XT3 15s

Crossfire XS-16k

Crossfire mids & highs and amps

65ah Cmax bank

Iraggi 320a and Mechman 300a

 

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So, I got some major testing in yesterday with the Crossfire 16k in.

 

Best numbers wired at .75 ohm:

 

157.49dB door open on the dash at 34hz

158.45dB door open in the kick, also at 34hz

The 16k clamped 15kw at 2.8 ohms at 15v when metering these scores.

 

Best numbers wired at .35 ohm:

 

158.79dB door open on the dash at 34hz

159.72dB driver window down, mic in kick at 34hz

The 16k clamped 23kw at 1.1 ohm at 14.7v when metering these scores.

 

All of these scores were measured with the driver's side c-pillar ripped and back side window basically falling out (gorilla taped together).  I can't wait to shrink the box a little bit and repair the cabin, then meter again!  I know she has 160s in her, even at lowish frequencies like these!  

1993 Suburban

6 Crossfire XT3 15s

Crossfire XS-16k

Crossfire mids & highs and amps

65ah Cmax bank

Iraggi 320a and Mechman 300a

 

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  • crazydoublekick changed the title to 159.72dB outlaw @34hz - no-wall - OBS Suburban - 6 Crossfire XT3 15s - Crossfire 16k @ .35
2 hours ago, crazydoublekick said:

So, I got some major testing in yesterday with the Crossfire 16k in.

 

Best numbers wired at .75 ohm:

 

157.49dB door open on the dash at 34hz

158.45dB door open in the kick, also at 34hz

The 16k clamped 15kw at 2.8 ohms at 15v when metering these scores.

 

Best numbers wired at .35 ohm:

 

158.79dB door open on the dash at 34hz

159.72dB driver window down, mic in kick at 34hz

The 16k clamped 23kw at 1.1 ohm at 14.7v when metering these scores.

 

All of these scores were measured with the driver's side c-pillar ripped and back side window basically falling out (gorilla taped together).  I can't wait to shrink the box a little bit and repair the cabin, then meter again!  I know she has 160s in her, even at lowish frequencies like these!  

Quick question, so when you say you’re wired @ .35 , that’s what you should see at the wires right? Then you’re rising from .35 to 1.1 ohm? 
 

so does that mean I can wire at .35 on a one ohm stable amp as long as it’s rising to 1 ohm, the amp won’t protect? Or is it the impedance at the wires? 

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On 5/3/2020 at 2:48 PM, bismofunyuns said:

Quick question, so when you say you’re wired @ .35 , that’s what you should see at the wires right? Then you’re rising from .35 to 1.1 ohm? 
 

so does that mean I can wire at .35 on a one ohm stable amp as long as it’s rising to 1 ohm, the amp won’t protect? Or is it the impedance at the wires? 

.35 was the nominal impedance.  That's the number you'll see when you put a meter on the wires going to the subs when the amp is off. 1.1 ohm, in this case, was the reactive impedance.  Meaning, at that particular frequency, the impedance rose from .35 to 1.1.  I wouldn't recommend wiring this low unless, A) you have a ton of rise and B ) you have a stout amp with a good track record of being wired low.  I personally am only wiring this 16k low for burps, as being at a reactive impedance that low for a giant board like this can be kinda sketchy (big boards are usually more sensitive to both vibration and low impedance, what I've seen).  I won't be playing music wired at .35 on this setup.

1993 Suburban

6 Crossfire XT3 15s

Crossfire XS-16k

Crossfire mids & highs and amps

65ah Cmax bank

Iraggi 320a and Mechman 300a

 

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17 minutes ago, crazydoublekick said:

.35 was the nominal impedance.  That's the number you'll see when you put a meter on the wires going to the subs when the amp is off. 1.1 ohm, in this case, was the reactive impedance.  Meaning, at that particular frequency, the impedance rose from .35 to 1.1.  I wouldn't recommend wiring this low unless, A) you have a ton of rise and B ) you have a stout amp with a good track record of being wired low.  I personally am only wiring this 16k low for burps, as being at a reactive impedance that low for a giant board like this can be kinda sketchy (big boards are usually more sensitive to both vibration and low impedance, what I've seen).  I won't be playing music wired at .35 on this setup.

I see. On my setup, with dual 1.4 coils I should have a nominal load of .7 before rise. I guess it’s not a huge deal, but if I’m going to be rising then wouldn’t it make more sense to get a more powerful amp? Are there any ways to limit rise?

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