Deadening to SPL Gains in my Jeep

[Electrodynamic 10+ year member]

Simon says leave the pvc off ...and we all know he is the man ,pimpness,hero,

Well if he said so, then Jake's an idiot for leaving it on. Simon knows all there is to know about SPLzorz.

 

[sundownz Pro Seller]

Okay, I give in - I ordered Damplifier Pro. I have 216 ft^2 on the way!

I talked to Ant and it is 1.75-2mm thick so I can still use 2 layers in front of the b-pillar and be legal for dB Drag //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Savag3 10+ year member]

so ur gonna double the rear roof now ?

 

[sundownz Pro Seller]

so ur gonna double the rear roof now ?

Oh yah. I am unlimited behind the b-pillar so I will deaden until it stops gaining... even if 216 ft^2 is not enough I'll get more!

In front of the b-pillar it will get two layers to equal the 4mm limit for dB Drag

 

[alvitae 10+ year member]

Have you noticed a frequency peak change with this?

 

[sundownz Pro Seller]

Have you noticed a frequency peak change with this?

Not yet. Still 50 Hz exactly.

 

[psychoacoustics 10+ year member]

what are the 2 small alum heatsinks? your mid/high amps?

http://www.sundownaudio.com/misc/96_Jeep/deadener/CIMG1969.JPG

what brand are they? more details please????

 

[sundownz Pro Seller]

what are the 2 small alum heatsinks? your mid/high amps?
http://www.sundownaudio.com/misc/96_Jeep/deadener/CIMG1969.JPG

what brand are they? more details please????

Those are Harrison Labs Flux Caps -- they step up my 12v system to charge my 16v bank at 17.9 volts //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

I normally have an SAX-50.4 in here for mids and highs but I took it out for now.

 

[skadude016 5,000+ posts]

real cool log Jake cant wait to see more progress

 

[sundownz Pro Seller]

real cool log Jake cant wait to see more progress

Same here //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif My other deadener will be here next week.

 

[basebalz13 10+ year member]

you should buy me some deander //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[audioarsonal 10+ year member]

Looks sick Jake.Almost a 1/2 db gain nice.Whats a pack of that cost?

And for those who say remove the PVC.One of the loudest guys in street had a box very similiar to Jakes and was doing 54's all day with it.//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Keep up the nice work.

 

[TeamRetribution 10+ year member]

Looks sick Jake.Almost a 1/2 db gain nice.Whats a pack of that cost?
And for those who say remove the PVC.One of the loudest guys in street had a box very similiar to Jakes and was doing 54's all day with it.//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Keep up the nice work.

I was joking ....the jeep does strong numbers ...Jake has a goal ,and we wont stop until he reaches it //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[nineball 10+ year member]

I had two more small rectangles of deadener left from my pack:
* After, see on either side of the piece that was sticking out farther

GAIN - 151.5 dB

logic would dictate that something is wrong here. it just doesn't make sense that covering your entire ceiling by adding a complete bulk pack gives you 0.5db increase in spl but adding those 2 tiny pieces gives you a 0.1db increase. they cover what, maybe 1/8th of a sq ft at best? that says that either your are not testing it in the same manor each time or not testing it enough times each step of the way to get a true reading. i think you would be better off testing it 3-5 times after each application and using an average. too many variables to get an accurate reading from one time.

good luck on the install though. i did my entire trunk, trunk lid (3 layers), floor and front doors (inner and out skins). it's a pain in the *** to do but well worth it in the end.

 

[sundownz Pro Seller]

logic would dictate that something is wrong here. it just doesn't make sense that covering your entire ceiling by adding a complete bulk pack gives you 0.5db increase in spl but adding those 2 tiny pieces gives you a 0.1db increase. they cover what, maybe 1/8th of a sq ft at best? that says that either your are not testing it in the same manor each time or not testing it enough times each step of the way to get a true reading. i think you would be better off testing it 3-5 times after each application and using an average. too many variables to get an accurate reading from one time.
good luck on the install though. i did my entire trunk, trunk lid (3 layers), floor and front doors (inner and out skins). it's a pain in the *** to do but well worth it in the end.

I added a single piece of metal tape in a vehicle doing 158s and gained 0.1 dB -- you might be surprised. The 0.1 remained as many times as I tested after the application.

My meter is not set to read past the 0.1 mark -- so I may have gained fractions of a dB before then and those two pieces pushed it to the next 0.1 mark. The TL can read to 0.01 if configured that way.