I'm gonna say the JBL setup just because of JBL's lineage as a well rounded company, especially back in the day? Anyone else care to argue that differently versus the Power Acoustik?
will one ported sub sound as loud as 2 sealed subs, running the same amp??? If not, about how much more wattage does the 1 sub need to be as loud as the 2 subs....????
Muddy...I'm almost 100% sure that porting gives you a 6dB increase and DOUBLING THE POWER gives you a 3dB...I think I still have documentation of this if you don't believe me...
It is too dependant upon the subwoofer itself, cabin gain, frequency chosen, and box size to say an exact number for a ported box. 3db is considered the average gain over sealed, but is highly dependant upon the enclosure.
Remember 3db is the same as doubling the amplifier power, or doubling the surface area. Since a ported box uses both the front and rear wave, it is considered a 3db increase. 6db would come from doubling the surface area AND doubling the power.
Odd...Because I have a sealed Sony speaker in my room and a ported Pioneer. The Pioneer generally hits between 5-6dB more than the Sony with the same power given from my Kenwood KR-6600...
Yes i know i am very badly underpowering my Power Acoustiks....but one of them already makes a popping noise (only can be heard when my hatchback is open and you are near the rear of the car looking at the system... So it almost sounds like its hurting my sub.
How do i know what size box to get and what does frequency and tuning the box do, and where can i find out the right measurements...
If a sub needs lets say 2 cubic feet in a ported box, does the box have to be exactly 2 x 2 x 2 or can it just be 8 feet in volume, no matter what dimension the box is.... example: 1 x 2 x 4
so even the JBL set-up will not be as loud as 2 12" Type R's in a ported box with a JL 1000/1 amp... correct? Because thats what my friend has, and i want something louder than his.
I do think it helps a whole lot that my camaro is a hatchback and he has a 4 door Cadillac Seville and the subs are in his trunk. My subs are basically in my back seat, about 5 feet away from my ears, and his subs are at least 8-10 feet away, in his trunk.
Does anyone see any relevance in this, or am i just believing that having a hatchback makes a difference in the SPL you actually hear and feel...
"Odd...Because I have a sealed Sony speaker in my room and a ported Pioneer. The Pioneer generally hits between 5-6dB more than the Sony with the same power given from my Kenwood KR-6600..."
That's just because Sony sucks. But ported boxes can have 5-6db more gain than sealed, it just depends on which frequency you're talking about, and the other factors I've listed above.
"Does anyone see any relevance in this, or am i just believing that having a hatchback makes a difference in the SPL you actually hear and feel..."
Hatchbacks are MUCH better for SPL than most sedans are.
Mike, what are you after? SQ or SPL? If all you want is SPL, then there are some options. RE MT subs will give you plenty of SPL and some SQ, if you design the box correctly. If you get 2 15" MTs, it's guaranteed to be louder than your friend's type Rs. You might also want to experiment with the sub facing up. It might sound louder in hatchbacks.
I have 1 15" MT and it is way too loud for everyday use. I might be putting it on eBay soon.
is the +3dB gain really that noticable, when both systems are really loud anyway.... like if one system was 133 dB and one was 136 dB.... if some joe smoe sat in each car and listened to each system, would he most likely say they are both insanely loud and his ears hurt, or would he def. be able to tell the Alpine/JL setup was louder???
my subs are facing up, and tilted towards the cabin slightly, it def. bounces off the rear window.... I basically want to find something better than my current PA set-up and comparable to my friends set-up...and i'm kinda on a budget of like 600-700 for sub(s) and an amp.
136 isn't insanely loud. lol but i would be able to tell
you could say, depending on your HU, that it woudl be like turning the volume up 1-3 notches( againdepending on the HU, mine would be closer to 1 i think.)
muddy, sorry i don't know dB's that well as far as how loud systems are... lol i was just using an example.... My friend is complaining of pretty bad distortion though becuz he still has his stock bose radio/CD player.
the RMS wattage on the SE is 600w, but you could feed it more with no problems.
you can feed all of RE's subs a little extra juice with no problems. i think GW once said that they test their subs Free Air For 8 Hours to get those RMS Ratings.
You would be able to tell the difference between 133 and 136db pretty easily. 1db is considered the smallest amount of change that a human can detect, 3db is a noticeable change, like when you turn the TV up just a little louder to hear it better.
muddy is the XXX that much superior to an SX??? I know the XXX is 600 more RMS, but would a 15 SX be louder than a 10" XXX??? i might some dumb asking this lol.
GW told me that. he also said that the XXX has a flat Bl curve so it maintains linearity at high excursion, but it is inefficient, so it takes a lot of watts to get it movin. or maybe jon said that. lol (going to bed talk to you 2morrow, lol i mean in about 8 hrs.)
