RL-p 15 Enclosures

[cougarballa2k5 0]

I'm out to get the most from my pair of RL-p 15s.

I am more than likely going to be acquiring a 1994 Explorer to replace my Cougar soon. Space is even more so, no longer an issue.

I have around 800 - 1000 RMS on tap per 15. Depends on how proper the rating on my amp is.

Currently, they are housed in 5.5 NET @ 33hz w/ 72in^ port area.

I would like suggestions/personal experiences as to what would be louder.

I personally would like to try

6.25 NET @ 32hz w/ 110in^2 port area.

Thoughts/Random comments all welcome.

[Aaron Clinton 2,372]

I would build a CRX box for the explorer if you want the most SPL

[cougarballa2k5 0]

My thoughts exacry. Volume and tuning wise, IDK.

[Aaron Clinton 2,372]

I believe it was mentioned to go up towards 34hz, and I think jelly was going close to 40, but I could be wrong

[cougarballa2k5 0]

Yeh. I'm wondering if more airspace and a higher tuning will do a good job of increasing output, but retaining a somewhat flat response.

Right now I like how it is, but I wouldn't mind it being louder at all.

[cougarballa2k5 0]

I modeled 5.5@33 vs 7@34 in BBP6. The 7@34 shows to be louder all the way till 63hz. Exactly what I am looking for.

Though I wonder how well they will handle the power at 3.5net per woofer. Also, is BBP6 reliable enough to pay money for the box?

I lost my garage so I have to pay a buddy 50 bucks + material to build er up for me.

[mrray13 30]

3.5ft^3 per is the max listed size...

a couple of things.....

the big enclosure will allow the suspension to move more with the power. so, u'll displace more air. but, like u mentioned, u're going to lose some mechanical power handling ability.

the bigger box will most likely cause a loss of power as impedence rises in larger enclosures. but u'll have to graph it and see where the spike comes in....

and i think u'll lose a bit of ur sq in the larger box. but then again, i like to build my enclosures on the smallish side anyway....

and in ur explorer (i saw where u were getting an 01 sport) ur going to benefit from the vehicles transient response, in short, ur going to be loud as hell anyway....lol...

wheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

[CrushinCory 0]

How would the RL-p 15" sound in a 2.5ft^3 net ported box tuned at 28hz in terms of spl and LSQ? I desire a compromise between the two, and with high power handling, ~900watts. TIA.

[cougarballa2k5 0]

IMO, step up to 2.75 and let er wang.

Or if 2.5 is your limit, it'll do damn fine too.

[jellyfish420 0]

I modeled 5.5@33 vs 7@34 in BBP6.  The 7@34 shows to be louder all the way till 63hz.  Exactly what I am looking for.

Though I wonder how well they will handle the power at 3.5net per woofer.  Also, is BBP6 reliable enough to pay money for the box?

I lost my garage so I have to pay a buddy 50 bucks + material to build er up for me.

<{POST_SNAPBACK}>

wouldn't go over 7. i had 7@34 once...didn't like it. i personally didn't like anything over 6. i suppose the 7 might do better if tuned lower, say around 28.

[cougarballa2k5 0]

What didn't you like about 7@34.

Do you think 6@34 would be a good option??

I'm wondering if it will be louder across the board than my 5.5@33.

[jellyfish420 0]

What didn't you like about 7@34.

Do you think 6@34 would be a good option??

I'm wondering if it will be louder across the board than my 5.5@33.

<{POST_SNAPBACK}>

i thought the 7@34 was kinda sloppy. they unloaded easier in the 7 than the 6....my 6@31 was my fav

i think my 5@37 peaked a little higher ~50Hz...but the 6@31 just kicked its ass anything under 40Hz

[mrray13 30]

How would the RL-p 15" sound in a 2.5ft^3 net ported box tuned at 28hz in terms of spl and sql?  I desire a compromise between the two, and with high power handling, ~900watts. TIA.

in 2.5, i'd up the tuning a bit..somewhere in the 30 range anyway. i ran my 15" treo ss's (similiar in size, power handling) in 2.5@34 and loved them...got really low and louder then s18x off half the power...

wheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

[60ndown 0]

so does a 7@34 perform /sound different than a 5@34? theyre both @ 34 ? so what is the difference and why?...basics please? if a box is tuned to 34hz isnt that what it does?...34hz

[jellyfish420 0]

so does a 7@34 perform /sound different than a 5@34? theyre both @ 34 ? so what is the difference and why?...basics please? if a box is tuned to 34hz isnt that what it does?...34hz

<{POST_SNAPBACK}>

the size of the box would affect several things...

the bigger box will peak higher, but will have a steaper rolloff and a higher impedance. the smaller will have a lower impedance and a more gradual rolloff, but will not peak as loud. it will affect more things than you think

[60ndown 0]

so does a 7@34 perform /sound different than a 5@34? theyre both @ 34 ? so what is the difference and why?...basics please? if a box is tuned to 34hz isnt that what it does?...34hz

<{POST_SNAPBACK}>

the size of the box would affect several things...

the bigger box will peak higher, but will have a steaper rolloff and a higher impedance. the smaller will have a lower impedance and a more gradual rolloff, but will not peak as loud. it will affect more things than you think

<{POST_SNAPBACK}>

peak higher=play louder @ tuned freq?

peak higher = will play higher freqs? (seems odd for a bigger box)

steeper rolloff= will play less below tuneing freq?

lower impedance / gradual roll off = will play more freqs below box tuneing with less overall volume?

[60ndown 0]

so 5@34 is going to be loudest @37 ish hz, and play almost nothing below 26?

whereas a 7@34 will be louder @37 ish and play almost nothng below 30?

[cougarballa2k5 0]

No, its impossible to tell until you load the box in the car. The transfer function of the vehicle plays a huge part in how loud it is and where.

peak higher = peak frequency is a higher hz

steep rolloff = rolls off quicker, less linear response

[60ndown 0]

No, its impossible to tell until you load the box in the car.  The transfer function of the vehicle plays a huge part in how loud it is and where.

peak higher = peak frequency is a higher hz

steep rolloff = rolls off quicker, less linear response

<{POST_SNAPBACK}>

so people just build boxes and 'hope' its gonna work?

[jellyfish420 0]

No, its impossible to tell until you load the box in the car.

[mrray13 30]

No, its impossible to tell until you load the box in the car.

[jellyfish420 0]

vehicle plays a huge role.....same sub, same amp, same box will have a different score in a different vehicle.

true..... but i believe we were talking about same sub, same amp, same vehicle, but a different box

edit: here is a link to a imp. graph from my rlp's in diff boxes. to show you just one of the things that'll change between boxes...

http://www.soundsolutionsaudio.com/forum/i...indpost&p=77745

[mrray13 30]

lol...sorry jelly...

but what i was trying to get across was this..what worked in ur car, while a starting point, might not work in his..or it could be louder.

does that help a bit?

wheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee