Fi btl 15 ???

At tuning, the woofer moves very little, but it will move more with more power still. Does this affect spl? Somewhat.

At tuning motor force is a much more important factor in spl, along with all the factors the port adds as well

HOWEVER, more power will make the speaker create more pressure along ALL frequencies regardless

 
At tuning, the woofer moves very little, but it will move more with more power still. Does this affect spl? Somewhat.
At tuning motor force is a much more important factor in spl, along with all the factors the port adds as well

HOWEVER, more power will make the speaker create more pressure along ALL frequencies regardless
Those are all great things, but do not change the fact that x amount of power is not "needed to get y woofer moving" as was originally claimed. You are changing the argument because you know you are proved wrong beyond a shadow of a doubt.

 
Those are all great things, but do not change the fact that x amount of power is not "needed to get y woofer moving" as was originally claimed. You are changing the argument because you know you are proved wrong beyond a shadow of a doubt.
tbh this whole argument is subjective to what you consider to be getting the sub moving. it just seems obvious to me that giving a sub that's rated for 3k, 2500w is gonna have more overall output than giving it 1500w. i don't really see what all the fuss is about, you like to make everything into an argument :/

 
tbh this whole argument is subjective to what you consider to be getting the sub moving. it just seems obvious to me that giving a sub that's rated for 3k, 2500w is gonna have more overall output than giving it 1500w. i don't really see what all the fuss is about, you like to make everything into an argument :/
No, I like to correct the ignorant. You guys circle jerk each other with this bs... and I like to fix it. Also, BTL's aren't rated for 3000w. Also, in your example giving a sub 2500w if it's rated rms (maximum you should apply daily) will "get it moving" at maximum. You wouldn't be able to tell the difference in that 500w by ear. Only a meter could measure it.

 
No, I like to correct the ignorant. You guys circle jerk each other with this bs... and I like to fix it.
i don't see how much of what was said in this thread was BS. 4 12's have an advantage of cone area over a single 15, and if the OP wants to get that louder than them the easiest way would be to send it more power (i'm not really concerned with being loud at a single frequency as the OP said this was gonna be for a daily). BTL can take more than 1500w, and if the OP has 3k on tap it would make sense for him to use the 3k, considering how the BTL can take quite a bit of power to start with

 
I dont even know what youre point is but to argue everything i say. from what i understand you are trying to emphasize movement isnt everything in output. which is true. a box can peak at the point where the cone is moving the least.

but lets say you have a box with the same port area tuned at 32hz for 2 woofers. youre playing a 32 hz tone, one with 500w and one with 1000w. the one with 1000w will obviously be louder. and you will notice it is moving more. believe it or not this is not a coincidence.

therefore, more power will get the speaker moving more and create more output/spl/bass/volume or whatever you want to call it. this is my point, has been all along.

 
I dont even know what youre point is but to argue everything i say. from what i understand you are trying to emphasize movement isnt everything in output. which is true. a box can peak at the point where the cone is moving the least.
but lets say you have a box with the same port area tuned at 32hz for 2 woofers. youre playing a 32 hz tone, one with 500w and one with 1000w. the one with 1000w will obviously be louder. and you will notice it is moving more. believe it or not this is not a coincidence.

therefore, more power will get the speaker moving more and create more output/spl/bass/volume or whatever you want to call it. this is my point, has been all along.
You need more than just the same port area and tuning. And more cone area doesn't necessarily mean louder either. I had two 10s in a trunk get 1dB louder than 2 15s. Just saying. And as you have said before, ryan shaw, its a thermal and mechanical limit. Its a protection for the sub not a requirement of power. Sometimes, more power doesn't always just gain you dBs.

 
but in the same install it does. that's what im saying

and while cone area doesnt always mean louder, it sure helps a lot assuming their in a good install

for instance, i had 3 18" q's in a 20 cube box meter lower than my box with 2 15" axis simply because the box was too big for the car and was choking the system. but in an anechoic chamber, the 3 18" setup would be louder all day off the same power.

if you have an fi btl in a box, throwing 3000w to it as opposed to 1500 will yield greater output.

I know this isn't a hard concept, i must just be explaining my point awfully

 
Power will depend on box. louder will depend on how well you can build and test. the BTLs are efficient. Has anyone of you that say that they are power hungry actually ran them? I did two box builds for two different SUVs for the UFO 15" BTLs and they both did over 145 sealed on the windshield on music on 1500 watts. No testing, just drop in.
i have to agree with this. i had a btl on a rf t1500bd, it got loud,low and was doing 145+ in my 350z. box was 2.7net. now it's on a bc3500. i hate hearing how they need all this power to get going. usualy that's from people with zero experience with them.

 
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