RSD12 with infinite baffle? Or a better way....?

Soggy_Popcorn · Post by **Soggy_Popcorn** » Sun Feb 07, 2010 12:42 am

Ok, I'm sort of in my advance planning and research stage for my future sub setup. I've got an 02 Altima with 6x9s in the rear deck, which would allow me to give the subs an infinite baffle. My question is, would a single RSD12 work well with an IB setup? Or would I be better off with a duo of the Infinity Reference 12" or 10" that currently go for $50 (they're basically JBL GTO's)?

I'm not opposed to making an enclosure, so if that would work much better, I'll do that. Also, if you guys have any suggestions for better SQ subs in that price range, fire away. I just don't want it/them to overpower my RSD6 set up front.

Thanks!

Post by **Bfowler** » Sun Feb 07, 2010 1:33 am

the rsd is pretty decent for ib setups. it responds well to a large box.

so would it be in the same trunk/area as the 6x9's?

if you can find a rsdc for 100...they are monsters. cleaner, faster, lower, more sensitive and blend better then the rsd.

todd217 · Post by **todd217** » Sun Feb 07, 2010 8:30 am

i have a pair of nib rsd12s that ill sell for 125 plus shipping

Soggy_Popcorn · Post by **Soggy_Popcorn** » Sun Feb 07, 2010 8:33 am

Bfowler wrote:the rsd is pretty decent for ib setups. it responds well to a large box.

so would it be in the same trunk/area as the 6x9's?

if you can find a rsdc for 100...they are monsters. cleaner, faster, lower, more sensitive and blend better then the rsd.

Yes, they would be mounted in the rear deck, using the trunk as an infinite baffle. I really like the sound this produces in the 6x9s, I just wanted to make sure the RSD12s would like it. And as far as the RSDCs go, are they really a much better value than the $65 RSD12?? I'm on a tight budget here, being poor.

todd217 wrote:i have a pair of nib rsd12s that ill sell for 125 plus shipping

Um, what is a nib rsd12? Because I would rather just get them off Amazon for $65/per...

todd217 · Post by **todd217** » Sun Feb 07, 2010 8:50 am

new in box

Post by **stipud** » Sun Feb 07, 2010 10:11 am

RSDs are better suited for IB than the RSDCs are, so stick with them. The RSDCs are much better in small boxes.

How are you going to seal off the trunk from the interior? Do you have folding rear seats?

Post by **Rold Gold** » Sun Feb 07, 2010 10:19 am

And I tend to think that the 6x9's will sound like shit due to the preassure the 12 will create in the trunk. You know, basic path of least resistance....

I'd think about making enclosures for the 6x9's myself.

Soggy_Popcorn · Post by **Soggy_Popcorn** » Sun Feb 07, 2010 12:22 pm

stipud wrote:RSDs are better suited for IB than the RSDCs are, so stick with them. The RSDCs are much better in small boxes.

How are you going to seal off the trunk from the interior? Do you have folding rear seats?

Aha, good point...I do have folding seats. What technique would be called for?

FuzzyHoNutz wrote:And I tend to think that the 6x9's will sound like shit due to the preassure the 12 will create in the trunk. You know, basic path of least resistance....

I'd think about making enclosures for the 6x9's myself.

No, I'll be replacing the 6x9s with a sub or two, so the sub will be mounted in the orifice where the 6x9 previously resided.

Post by **ttocs** » Sun Feb 07, 2010 1:03 pm

if you are really going to build an enclosure, why would you do it for the 6 x 9s? Ib can be ok if you do it perfectly but it is hard to make it sound as good as just a standard sub with an enclosure.

Soggy_Popcorn · Post by **Soggy_Popcorn** » Sun Feb 07, 2010 1:12 pm

ttocs wrote:if you are really going to build an enclosure, why would you do it for the 6 x 9s? Ib can be ok if you do it perfectly but it is hard to make it sound as good as just a standard sub with an enclosure.

Um, no the 6x9s WILL be coming out. They would be just added noise. So I was thinking of doing IB (with the 6x9's empty rear deck mounting locations) just to save myself the noob hassle and extra weight of an enclosure. So what are the tricks to setting up IB? I've got a gigantic trunk in the Alty, if that makes any difference.

Post by **stipud** » Sun Feb 07, 2010 2:18 pm

If you think a box is hassle and weight you will be pleasantly surprised with how big of a pain in the ass IB is. To get it set up properly you need to completely isolate the trunk from the cabin, which basically amounts to building a wall and sealing it in with expanding foam. Not for the faint of heart.

Post by **ttocs** » Sun Feb 07, 2010 3:39 pm

as he said, the first job will be to make the trunk into a perfectly sealed enclosure so while you will save weight and space, your job has only just begun.

Can I ask why you want your 12s to sound by 6 x 9's? in my experience there is no better way to make a 12 sound like x9s then to go IB, but it is much much easier to tune and make a system sound good with a traditional enclousure.

Soggy_Popcorn · Post by **Soggy_Popcorn** » Sun Feb 07, 2010 4:49 pm

stipud wrote:If you think a box is hassle and weight you will be pleasantly surprised with how big of a pain in the ass IB is. To get it set up properly you need to completely isolate the trunk from the cabin, which basically amounts to building a wall and sealing it in with expanding foam. Not for the faint of heart.

That's pretty persuasive to a lazy bum like me. I really didn't think about sealing off the whole trunk. That makes sense. And considering the Altima build quality...

Enclosure it is. I understand 1.8-1.9 cu ft is standard for the rsd12?

Switching topics a bit, I currently have an el-cheapo Crunch amp from Fry's; a 500w for $50. I think it's decent, as I'm no audiophile extraordinaire. So unless you guys can recommend a similarly cheap, value-oriented amp (either to run the sub or replace my Crunch on comp duty), I'll probably pick another up. Any suggestions?

Stryker · Post by **Stryker** » Sun Feb 07, 2010 10:08 pm

stipud wrote:If you think a box is hassle and weight you will be pleasantly surprised with how big of a pain in the ass IB is. To get it set up properly you need to completely isolate the trunk from the cabin, which basically amounts to building a wall and sealing it in with expanding foam. Not for the faint of heart.

I've done it and it was alot of work but worth it if you ask me. I do not run IB, but a box with subs facing forward and then sealed up the gaps and everything using expanding foam like a MOFO.

Post by **stipud** » Mon Feb 08, 2010 7:17 am

Soggy_Popcorn wrote:That's pretty persuasive to a lazy bum like me. I really didn't think about sealing off the whole trunk. That makes sense. And considering the Altima build quality... Enclosure it is. I understand 1.8-1.9 cu ft is standard for the rsd12?

1.8 is about optimal, but you can fit them in as small as 1.25.

Considering you are building a box, I would now recommend the RSDC for $20 more from Amazon. They work best in 1-1.25cuft, which will save you quite a bit of trunk space.

NewOldStock · Post by **NewOldStock** » Mon Feb 08, 2010 10:00 am

if your going to to IB I would look for an Acoustic Elegance IB15 ... they are supposed to be the best IB sub of all time.

for around the price of the RSDc you can get the Dayton HO 10 or 12 - the 10" in a .75" enclosure are supposed to be most excellent for SQ but arent an overly musical sub

I bought a pair of RSDc 10's and keep going back and forth between the AE-IB15 and the 10's. the 10's make my install easier but more expensive, the IB15 will give me more effortless low end extension and low-end accuracy but will make my install much harder without sinking my amp into the floor

for IB you want all the cone area you can get, multiples of 10's and 12's and your trunk will need to be sealed off completely from your cabin. so ditch the rear speakers, cover those holes, sound deaden everything, spray foam/seal everything else - then sound deaden over the top of that.

Soggy_Popcorn · Post by **Soggy_Popcorn** » Mon Feb 08, 2010 4:01 pm

NewOldStock wrote:if your going to to IB I would look for an Acoustic Elegance IB15 ... they are supposed to be the best IB sub of all time.

for around the price of the RSDc you can get the Dayton HO 10 or 12 - the 10" in a .75" enclosure are supposed to be most excellent for SQ but arent an overly musical sub

I bought a pair of RSDc 10's and keep going back and forth between the AE-IB15 and the 10's. the 10's make my install easier but more expensive, the IB15 will give me more effortless low end extension and low-end accuracy but will make my install much harder without sinking my amp into the floor

for IB you want all the cone area you can get, multiples of 10's and 12's and your trunk will need to be sealed off completely from your cabin. so ditch the rear speakers, cover those holes, sound deaden everything, spray foam/seal everything else - then sound deaden over the top of that.

Wow, thanks for all that info

I'm most definitely doing an enclosure...Hm, you've complicated my woofer choice. I'm currently seeing the rsd as the best value, as I'm not sure I'd see much benefit from going to rsdc's, considering I'll be on a budget amp. You guys still have to enlighten me on amps

Re: 10 inch vs 12 inch, I'm leaning toward the rsd12, since I'm not gonna go for a dual sub setup. Would a ten suffice as well?

oldskoolmseriesfan · Post by **oldskoolmseriesfan** » Mon Feb 08, 2010 6:51 pm

to be most excellent for SQ but arent an overly musical sub , quote(newoldstock) its excellent for SQ but its not the most musical????? lol how does that work....I,in my opinion would include SQ and the most musical in the same context. Im just bustin your chops...but that is how I see it.

Soggy_Popcorn · Post by **Soggy_Popcorn** » Mon Feb 08, 2010 7:32 pm

oldskoolmseriesfan wrote:to be most excellent for SQ but arent an overly musical sub , quote(newoldstock) its excellent for SQ but its not the most musical????? lol how does that work....I,in my opinion would include SQ and the most musical in the same context. Im just bustin your chops...but that is how I see it.

I thought the same thing

C'mon guys, amps!

oldskoolmseriesfan · Post by **oldskoolmseriesfan** » Mon Feb 08, 2010 7:42 pm

Amps... PG of course you silly popcorn fart!!!

If I was you, for the price I would wait untill the end of the monthe when the new R line of amps are out. They have great features and the price is stupid low

NewOldStock · Post by **NewOldStock** » Mon Feb 08, 2010 8:41 pm

bust away...

The Dayton is, for better analogy, extremely accurate... as in, it reproduces exactly what is there and doesnt color the sound at all. Its clinical in that respect... hits the note, hits it clean then the note is over and the sub leaves no aftertaste. lol

Its hard to explain and had I not heard one myself, I wouldnt understand WTF I am talking about either.

If I was going for 100% pure SQ with an enclosure - it would be the Dayton in .7cu/ft ported to 31hz

If I was going IB it would definitely be the AE

Since I want excellent SQ as well as real impact - I am going RSDc. Which I finally got to hear and LLOOVVEEDD.

if your only going to use 1 sub and have room, do the 12. The extra cone surface makes a huge difference. (10" = 78.5sq inches) (12" = 113sq inches) (15" = 176.7sq inches) so you can see how even 2 10" subs that seem to have a surface area greater than a single 15 actually have less...

Keeping that in mind, a single 12 usually doesnt take that much more room than a single 10 where a single 15 usually does... so IMO - if your going to run 1 sub no matter what - a single 12" sub is the best bang for the buck.

Now... define budget for your amp.

I agree with oldskool - wait for the new R-Series amps, they look great and have a great feature set.

The RSD amps are really inexpensive these days and put out rated power or more and I have never heard anyone have any problems with them. Solid, clean and powerful.

If you are looking for real budget stuff thats still solid and that you can trust... thats tough but go take a look at "audio clinic"
USB 4085 (80.00) which is a USX 4085 board in a different chassis (USX series were Zed-made)
http://cgi.ebay.com/US-Acoustics-USB-40 ... 2a04aae0db .
The USB 2100 is only 50.00...
http://cgi.ebay.com/US-Acoustics-USB-21 ... 2a01d0a42a

If I cant get my hands on an R series amp soon enough (or cheap enough - since she holds the purse strings for her car), I will end up getting a pair of his USB 2080's for my wife's car.