Power handling

[dman4486 5,000+ posts]

how much power handling do you loose by lowering tuning frequency?

Click to read more...

 

[tcguy85 10+ year member]

how much power handling do you loose by lowering tuning frequency?

why would you loose power handling by tuning lower? that doesn't make sense to me.

 

[dman4486 5,000+ posts]

may be a misunderstanding on my part...

when i had my rsd's in a box tuned for 45hz, the excursion of the speakers were very small at lower frequencies, and now that I am at 24hz, the excursion is amazing....

more power=more excursion, so if people are talking about running rsd's on 800+ watts, and i am running ~240 now, and the excursion is what it is, then when i add more power I will have possibility of mechanical failure

 

[Jeremy M 10+ year member]

i was under the impression that smaller boxes take more power and bigger boxes take less.

kinda like putting a 12" in a 1cu ft sealed box and then putting it in a IB.

 

[tcguy85 10+ year member]

may be a misunderstanding on my part...
when i had my rsd's in a box tuned for 45hz, the excursion of the speakers were very small at lower frequencies, and now that I am at 24hz, the excursion is amazing....

more power=more excursion, so if people are talking about running rsd's on 800+ watts, and i am running ~240 now, and the excursion is what it is, then when i add more power I will have possibility of mechanical failure

a sub should move less as long as it's not playing information below tuning. i don't see how tuning lower will increase excursion. lower frequencies do require more excursion, but cone movement will be at a minimum at and around the tuning frequency of the box.

now, making the box bigger will allow the sub to move farther off of less power, thus lowering power handling. i think the way to go is a small box tuned low.

oh and 24hz tuning in a car is crazy low. hell even 30hz is kinda low for a car.

 

[dman4486 5,000+ posts]

a sub should move less as long as it's not playing information below tuning. i don't see how tuning lower will increase excursion. lower frequencies do require more excursion, but cone movement will be at a minimum at and around the tuning frequency of the box.
now, making the box bigger will allow the sub to move farther off of less power, thus lowering power handling. i think the way to go is a small box tuned low.

oh and 24hz tuning in a car is crazy low. hell even 30hz is kinda low for a car.

the 24hz is such a flat response it is rediculous...no audible peaks, and the lows are amazing..calculated and proven to my ear...

I was just curious that since i am getting such excursion already, would adding 500 watts per speaker bring potential for mechanical failure due to over excursion

 

[tcguy85 10+ year member]

the 24hz is such a flat response it is rediculous...no audible peaks, and the lows are amazing..calculated and proven to my ear...I was just curious that since i am getting such excursion already, would adding 500 watts per speaker bring potential for mechanical failure due to over excursion

well, doubling the power doesn't double excursion. just remember that. i can't remember how much power it takes to double the excursion of the top of my head though. you should be fine. i run a 600 watt rated sub at 600 watts tuned to 30 hz and don't have any problems, i don't think you will either.

and i hear ya on the flat response. thats how i made my box.

 

[dman4486 5,000+ posts]

well, doubling the power doesn't double excursion. just remember that. i can't remember how much power it takes to double the excursion of the top of my head though. you should be fine. i run a 600 watt rated sub at 600 watts tuned to 30 hz and don't have any problems, i don't think you will either.
and i hear ya on the flat response. thats how i made my box.

yea...i know doubling power won't double excursion, i was trying to make sure that when i added the power that i want to feed the rsd's that i wouldn't cause an issue...and from your response, it seems i will be fine..

.thanks

 

[tcguy85 10+ year member]

i'm shocked that nobody else has commented in this thread.

i think you'll be fine though. if it turns out to be to much just back off the volume.

 

[its_bacon12 10+ year member]

if your sub is movin a lot with 240 watts, why do you need more? you're just going to push it past mechanical limits

 

[tcguy85 10+ year member]

if your sub is movin a lot with 240 watts, why do you need more? you're just going to push it past mechanical limits

yea but the question is how much is it really moving. "a lot" is kinda vague. also it depends on the music your playing, although not a lot of music gets down strong into the mid 20's.

 

[dman4486 5,000+ posts]

if your sub is movin a lot with 240 watts, why do you need more? you're just going to push it past mechanical limits

I am looking to find a max balance between clean controlled sound and output:woot:

 

[dman4486 5,000+ posts]

and i have videos in sig of excursion

 

[spl guru 10+ year member]

Just wall it off already......