RL-P 12 Excursion vs other woofers with 24mm

[haydenlake 0]

First of all let it be known that I'm super happy with my RL-P and I've had it for 3 months now, so I'm not trying to bash SS. But I was watching a few vids on Realmofexcursion and it just doesn't look like SS's move all that much for a sub with a rated xmax of 24mm. In comparison to other subs out there that have less rated excursion it looks like the SS's move even less than these.

-is it because the SS vids just are not showing full excursion?

-I don't have a video camera

-yes the RL-I 10 vid shows the most movement but why not someone with a RL-P 12

thanks, and remember I mean no offense

b

[SoundSplinter 1]

No offense taken.. but you said you own an RL-p yourself - so do you still think it hardly moves when you look at it first hand?

Keep in mind that Xmax is a potential figure, not an absolute. There are many factors that come into play to determine if and when a woofer will reach its maximum excursion. Personally speaking, I'm much more concerned with how a woofer sounds than how much it moves. Nonetheless, rest assured that those Xmax figures come straight from Dumax and the engineers who build these drivers and I have not manipulated them one bit.

I really wish I had my laptop on me right now (it's at the new place I'm moving into), as I have a video of an RL-p15 being fed with a frequency oscillator and it indeed gets moving quite a bit. If you want to see some movement, start with a really low frequency tone in free-air and crank up the juice - I'm sure you'll be presented with some serious movement. I'll also make an effort to get back here with those videos as soon as I can.

[ANeonRider 3]

My 12 definately exurts 24mm....

[Supa_c 1]

Crappy camera's and poor quality video can be decieving.

Have you seen my Brahma video ?

Thet hardly move, but when you see the single 15 is wangs.

[haydenlake 0]

I totally agree that sound quality is way more important that overall excursion. My RP-L 12 is in a tiny enclosure (.55 ft^3) and I'm wondering how much power compression it is undergoing as well as how that small box is limiting its excursion capabilities. In comparison to the vids mine moves just as much or more, but I still don't know how hard those other guys were pushing their subs (video is not such a great medium for this kind of thing). My sub (maybe) starts distorting when driven hard, but I think this is the amp clipping. I was just trying to figure out which it is.

The reason my RL-P is in such a small box is bc I have it on the inside of the car not in the trunk (BMW trunks kill bass)

-before you slam me for running it in such a small enclosure, I have to say it sounds really good. It's super accurate and goes pretty deep (obviously not as deep as when I put it in 1.5ft^3) but that box is hardly going to fit behind the passanger seat.

the amp I'm running is the old series PPI PC2150 (when PPI was making good stuff) it probably puts out around 600wrms.

-if anyone could answer another question I would really appreciate it. If you had two identical subs and boxes playing the same frequecy and they were both moving the same amount but they were powered by different size amps would one sub be louder than the other. (consider the amps and subs well within their operating capabilities).

-thanks

b

[Impious 1,476]

If you had two identical subs and boxes playing the same frequecy and they were both moving the same amount but they were powered by different size amps would one sub be louder than the other. (consider the amps and subs well within their operating capabilities).

Would the subs be receiving different amounts of power? Or were you asking about the age old "headroom" question?

[haydenlake 0]

If you had two identical subs and boxes playing the same frequecy and they were both moving the same amount but they were powered by different size amps would one sub be louder than the other. (consider the amps and subs well within their operating capabilities).

<{POST_SNAPBACK}>

Would the subs be receiving different amounts of power? Or were you asking about the age old "headroom" question?

<{POST_SNAPBACK}>

Yes I meant the subs would be receiving differerent amounts of power, but if you can explain headroom the I would appreciate that as well.

Thanks,

-if they were receiving different amounts of power does that mean they couldn't be moving the same amount?

[Supa_c 1]

Answer to your last question:

yes

[haydenlake 0]

Answer to your last question:

yes

<{POST_SNAPBACK}>

Okay thanks, but how does this explain rms power (I thought that was the continous power going out of the amp and only the signal changed)?

thanks,

b