Anyone used Dynaxorb / Deflex PowerPad / Second Skin Tweaker Pad etc?

[arverson]

also, definitely focus on sealing those service holes before worrying about diffusers. thatll make a much more dramatic improvement

to some up:
sealed service holes > sound difference from a diffuser

[androo]

Thanks for the advice. I will be sealing the doors regardless, however would rather not have to take off the door trims all over again. Speakers/tweeters are all in stock locations with simple spacers (not angled). I prefer a clean, stock look. They are 2 way speakers and from memory, they are JL C2600s at the front, and C2600X in the rear.

So the plan is (in a nutshell):

Adding felt tape to any rods in contact with each other
Re-grease all moving parts
Clean all surfaces to be deadened
Deaden outer skin, then cut Perspex/3mm MDF (painted and sealed) to cover all holes
Attach covers and deaden over them

Let me know if I've missed anything but that's the plan. Essentially, I would like to purchase some diffusers and test fit them on and off to see the effects and what differences they make (even if it is small). But I would prefer not to do this if I've already installed my door trims back on (because more than likely, I will put it off until 2015 or so). My questions were pretty much if it's even worth me doing this or just skipping the diffusers all together because they are as good as 70 year old testies. So far from this thread it sounds like people think it makes a difference even on fully deadened doors (most of the reading I have done on other forums seem to be from people who have installed both at the same time and have no idea if it's made a difference or not, or people who did not seal their doors but just install these diffusers).

[arverson]

taking door trims off is easier than unscrewing a speaker to change the diffuser behind it!

sounds like you know what needs to be done. maybe a layer of MLV between the deadner & door trim if you wanna take it that far. otherwise youre already on the ball.

no doubt it makes a difference, im just saying seal those holes. but since youre adding diffusers anyway it doesnt matter, youre taking care of two birds with one stone.

[SQXPRT]

I got the foam - 40mm from Jaycar.

It did not collect moisture or go mouldy after 6 years in the doors.

1/2 a square Glued on inside each door with selleys contact adhesive

[androo]

I got the foam - 40mm from Jaycar.

It did not collect moisture or go mouldy after 6 years in the doors.

1/2 a square Glued on inside each door with selleys contact adhesive

Is it quite a dense foam? Did you notice much of a difference? Checked out the Cresendo Diffuser V2 - The cheapest price I can find is $70 for a pair (they are sold in single squares). Wondering if it is truly the best product as they are more expensive than the Dynaxorb product.

A quick update on the mini project: It's raining again today. Hoping it clears up for tomorrow however if it doesn't it looks like I will have to postpone this until next week!

[arverson]

youre over thinking it. RELAX! :P

if youre ears are truly that picky, then u wont mind the improvement & wont care about the price difference. we're talkin about a price difference of $20 or so bucks here for christs sake. like i said, its depends on how much u value that improvement.

and like i also said, focus on sealing those service holes. or, at the risk of going around in circles, flip a coin, heads crescendo diffuser. tails dynaxorb. then live with that decision & move on. then u can both seal the holes, add diffusers & call it a day. simple really

[androo]

Haha I might be a bit, but those who know me know I am an extremely curious person (and often, I end up out of pocket because of it!). In this case, I am extremely curious because all these products claim to do the exact same thing, however vary vastly in design. I'm sure they are all designed the way they are for a reason, however I would like to know which is the best, or if they affect different ranges slightly differently.

In saying that, because of this, I will be purchasing 2 sets of different diffusers (I've picked up (what looks to be) the Second Skin equivalent already from Jaycar - I will be choosing either they Dynaxorb or Cresendo by which would be the easiest and fastest to get) and do a comparison and post up my findings. Mainly because I'm very curious, but also to see if there is a huge difference between the more expensive offerings and the cheapest offering I can find (the Jaycar one). Hopefully this will help people decide which they should get (or whether they should get one at all!).

Wish I could get both designs however feel that it would be a waste of money. With the current plan, whichever one is less effective will be used with the rear speakers. I will however, have a look around the garage for various packaging foams to see how these 'dedicated' designs fair against some household foam as well.

Will keep everyone updated!

[cbauto]

im not very experienced with tuning/sq but to my ears it sounded like it cleanned up the vocals and it seemed as tho i could turn the volume up higher before distortion became noticable.

your ears are damaged.

[arverson]

lol theres so many other variables. i reckon psycho acoustics played a major role in tbm's situation. we could go on all night with the technical side of sound but thats no fun to all the 'jdm yo!' people on here.

look forward to your review androo! ill place my bet on the crescendo diffuser having a more positive effect.

[TbM]

your ears are damaged.

Cant argue with that lol :P

lol theres so many other variables. i reckon psycho acoustics played a major role in tbm's situation. we could go on all night with the technical side of sound but thats no fun to all the 'jdm yo!' people on here.

look forward to your review androo! ill place my bet on the crescendo diffuser having a more positive effect.

Whats psycho acoustics?

[arverson]

google it. im not your dictionary lol

[androo]

Averson, are you an audio pro? You seem to be well-versed in the subject!

Just a quick update guys! After contacting a few vendors, I found an extremely helpful guy who, after myself telling him what I am planning to do (test and compare), has agreed to send me out 3 types of diffusers for not so much money (but more than if I just did what a normal person would do and stick to 1 set lol). This means I will have the following items to compare:

Dynaxorb
Crescendo V2
Audio grade foam
Jaycar diffuser

Add to the list a few random household foams, and I'm extremely excited to see how if I am able to tell the difference between any of them and if so, how much. All testing will be completed blind and random (a helpful person in my life has agreed to switch them in and out for me while I listen). I will let everyone know how my test goes! It will have to be a day where I have quite a number of hours free so give it a few weeks!