ss rl-p

[Subarufool 10+ year member]

i was wondering why i dont see very many posts of this sub? is there better out there for the same price? i have to cram 2 12's in a regular cab 79' gmc and i want to know if they are a good choice for sq and sql in a sealed box? 2000 watts rms @ 2 ohm is what they will be getting....if ported is needed can someone help me understand how to create a ported box in normal terms....

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[60ndown 10+ year member]

go sealed with 2000 wrms and the rl-ps, its hard to get better for the money, they are great subs.

 

[faulkton 5,000+ posts]

i had an rlp 15" and it was the best sub ive owned.. i miss it ;(

 

[MikeyB 5,000+ posts]

I had an 15" Avalanche which is very similar to the RL-P, sounded awesome, but I sold it and Im waiting for my two 12" RL-Ps to arrive in the mail. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[bdawson72 5,000+ posts]

the rl-p is an excelent driver

 

[squeak9798 5,000+ posts]

i was wondering why i dont see very many posts of this sub?

It gets talked about quite frequently.....You must be looking in the wrong places //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Also, if you weren't aware: http://www.soundsolutionsaudio.com/forum/index.php?showforum=41

is there better out there for the same price?

Better for the same price? I don't think there's any that are flat out "better". It is definitely a top contender at it's price point.

i want to know if they are a good choice for sq and sql in a sealed box? 2000 watts rms @ 2 ohm is what they will be getting

They will perform excellently for you with that power in properly sized sealed enclosures.

However, the follow comment sort of scares me...

i have to cram 2 12's in a regular cab 79' gmc

How much room do you actually have to work with? A single 12" in an appropriately sized ported or sealed would be much better than two 12's in inadequate airspace.

 

[60ndown 10+ year member]

http://cgi.ebay.com/TC-SOUNDS-12-TC2-Subwoofer-TC1000-SQ-24-hr-ship_W0QQitemZ170014836243QQihZ007QQcategoryZ18803QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

 

[Subarufool 10+ year member]

thanks guys i had no idea there was a website set up for just the sound splinter.....i have more then enough room then it is recomended from the sound splinter website....i have about 3.5 cubes....which is too much so i am gonna make something fit....will it be better to run seperate boxes or put them together? or does that not matter?

 

[jacka 10+ year member]

just run them together. are you going to run sealed? my rl-ps have come and i'm going to put them in 1.5 net cubic ft per driver. should sound awesome.

 

[bimma85 5,000+ posts]

thanks guys i had no idea there was a website set up for just the sound splinter.....i have more then enough room then it is recomended from the sound splinter website....i have about 3.5 cubes....which is too much so i am gonna make something fit....will it be better to run seperate boxes or put them together? or does that not matter?

Can run a single sub, if needed. If one subs blows, just take it out and wang the other //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif.

Otherwise, no real difference.

 

[HiAmplidude 10+ year member]

I ran a pair of RL-P 12"s in around 1.65 cu. ft. each (if I recall) sealed. Absolutely wonderful woofers. Probably the most accurate reproduction I've experienced from a subwoofer, ever. I was slightly disappointed with their high roll-off point, in this enclosure though (didn't stay linear into the lowest of the low barely audible frequencies of sub-bass). I'm sure a nicely tuned ported or larger sealed enclosure would've done the trick.

I also had trouble modeling because software was tossing out all kinds of crazy graphs. These are definitely subs to experiment with in different enclosure alignments in your vehicle! They certainly have the capability to meet all your SQL dreams if done right. I only had a couple weekends to work with mine, so never had the chance to find that bliss, but I promise it is there.

According to recommendations and experience, 1kWRMS per sub can over-do them depending on enclosure. Larger than 2.0 cu ft sealed, probably. Ported, likely (especially without subsonic filter). But, your power is only as good as what's feeding the amp, so it's pretty tough for me to believe that a full 1000WRMS will be reaching each sub, all generic conditions considered (unless I'm underestimating your cabling and alternator output).

Lood Guck!... and don't forget to post pics n' stuff of your setup as you experiment and move along with your install. SoundSplinter is highly respected around these parts, and all it takes is a silly magnet-shot on your Poke Mon bed spread to get these guys drooling.

 

[busky2k]

Yeah the rl-ps have some real real strange T/S parameters. For example, cross calculating their sensitivity is way off by using the Fs/Qts etc. Also box modeling with software shows the drivers are absolute poo with F3s well above 70Hz.

Maybe they got them wrong? Because the RL-Ps are highly respected. I'm tempted to get a 15 but I'm scared it wont hit low in a sealed box. I'm talkin 25-35Hz easy.

 

[carguy83 10+ year member]

Yeah the rl-ps have some real real strange T/S parameters. For example, cross calculating their sensitivity is way off by using the Fs/Qts etc. Also box modeling with software shows the drivers are absolute poo with F3s well above 70Hz.
Maybe they got them wrong? Because the RL-Ps are highly respected. I'm tempted to get a 15 but I'm scared it wont hit low in a sealed box. I'm talkin 25-35Hz easy.

It will hit those lows just fine. I have a 2.0 cu ft net box, as recommended by Mike of Sound Splinter, and the sub sounds awesome in it.

 

[squeak9798 5,000+ posts]

For example, cross calculating their sensitivity is way off by using the Fs/Qts etc.

SPL = 112+10*log(9.64*10^(-10)*Fs^3*(Vas/Qes))

For the 12" dual 4:

SPL = 112+10*log(9.64*10^(-10)*18.856^3*(142.7/.242)) = 87.81db

Rated sensitivity is 87.79db

.02db is not "way off"

For the 15" d4:

SPL = 112+10*log(9.64*10^(-10)*27.487^3*(148.8/.508)) = 89.68db

Rated sensitivity is 89.67db.

.01db difference is not "way off"

The D2's for both models are just as close...within .02db of the rated sensitivity.

Seems to me that someone must be doing the calculations improperly //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

But no, the Rl-ps do not model well in enclosure design programs. This is one example of how paper and real world do not always agree. The 15's will hit very low in a sealed enclosure.

 

[squeak9798 5,000+ posts]

Upon re-reading, if you were using "Fs/Qts" as the calculation for sensitivity (rather than meaning you used both Fs and Qts [which is not correct for either formula] in the calculation for sensitivity), then therein would lie the problem. The formula Fs/Qes is used to calculate EBP (efficiency bandwidth product), but that is NOT the same as the sensitivity of the driver. EBP is essentially a ratio between the Fs and Qes to quickly determine which enclosure type (sealed or ported) the subwoofer would be most suitable for.

Completely different than senstivity. If what I wrote above is correct, then apparently the term "efficiency" in the name of the measurement is what confused you.