12s 10s 8s or 15?

[LosIsATool 5,000+ posts]

Kinda ironic that people trying to deter everyone from believing simple physics...and both people who disagree are running 15 inch and 18 inch woofers.... /sigh

Here you go bud.

https://www.youtube.com/watch?v=u8yArcObFZI

 

[LosIsATool 5,000+ posts]

I'm sry but I've had single 8" on 500 watt and 4 18s on 500watt and the 18s played way lower then 1 8"

They should have played the same. SPL of the 4 18s should be way higher. Wait till yall see what my little monster can play!

 

[potvin]

I'm sry but I've had single 8" on 500 watt and 4 18s on 500watt and the 18s played way lower then 1 8"

Well, you cannot compare 1 8 inch with 4 18" regardless of the power running to them. That's a bit extreme and basically reversed. You may be able to get the same output volume and frequency response with four high end 8 inch as ONE 18" woofer but you would need at least that if not more. We can assume that smaller subs can play lower frequencies, but it is still really subjective. Smaller subs don't effectively reproduce super low frequencies like bigger cone area subs. You can achieve a SIMILAR (not exact) effect to play low and loud if you add a bunch of small subs if you are stepping down from say 12's or 15's BUT you need more of them...why? Because adding more subwoofers you are essentially adding MORE CONE AREA. More cone area = lower frequencies played more efficiently at higher output volumes.

 

[adulbrich 5,000+ posts]

Don't you think that if cone area had nothing to do with frequency response that we would all have 6" subs in the back of our vehicles to save space? Small speakers are somewhat capable of hitting low notes but that is either in an insufficient amount or totally inaudible. Sure they might be able to pump out 30Hz at an almost in audible level. But It can't reproduce 30 Hz at 4 or 500 watts. So, your reply was not only silly but disposable. No need to call people noobs over your inexperience.

We don't have 6" subs for many reasons. You would need a lot of them for the output people are looking for. More drivers would mean more coils, which would equate to a greater impedance rise. Less power out of your amplifier.

Also, most people have a decent amount of room for a box.

Ur wrong. Come area is king and is a lot easier to play lower louder. But I'm not agreeing with potvin

You can play lower louder, but a 12 and 18 can both play just as low..

Kinda ironic that people trying to deter everyone from believing simple physics...and both people who disagree are running 15 inch and 18 inch woofers.... /sigh

I've ran many sizes. The reason I'm running 15's is not to play lower, but to have more output in general.

I'm sry but I've had single 8" on 500 watt and 4 18s on 500watt and the 18s played way lower then 1 8"

My SA8v2 is the lowest playing setup I've ever heard. Box tuning was in the 20's. Was it the loudest? No.

Box tuning is more important than cone size, to a point. I'm assuming you've heard good home audio subs that are small. If not, you would be surprised by how low a 6" driver can play in a horn enclosure.

 

[shauncox26]

Dd 9515 or tantric hdd 15. Out of the two i would go with the tantric. Many others out there but those two are the ones i have experince with.

 

[massivespl]

Here you go bud. https://www.youtube.com/watch?v=u8yArcObFZI

I always liked this video for some little 4" woofers

 

[adulbrich 5,000+ posts]

Well, you cannot compare 1 8 inch with 4 18" regardless of the power running to them. That's a bit extreme and basically reversed. You may be able to get the same output volume and frequency response with four high end 8 inch as ONE 18" woofer but you would need at least that if not more. We can assume that smaller subs can play lower frequencies, but it is still really subjective. Smaller subs don't effectively reproduce super low frequencies like bigger cone area subs. You can achieve a SIMILAR (not exact) effect to play low and loud if you add a bunch of small subs if you are stepping down from say 12's or 15's BUT you need more of them...why? Because adding more subwoofers you are essentially adding MORE CONE AREA. More cone area = lower frequencies played more efficiently at higher output volumes.

Unless it's a terrible 18, no.

The 18 would be a lot louder.

Frequency response can be made similar with correct enclosures. This I agree with.

 

---------- Post added at 02:32 PM ---------- Previous post was at 02:31 PM ----------

 

Dd 9515 or tantric hdd 15. Out of the two i would go with the tantric. Many others out there but those two are the ones i have experince with.

Don't like the 9515?

 

[LosIsATool 5,000+ posts]

All this stuff is out there. Why don't people spend time to look before they say stuff like this than argue about it

 

[massivespl]

We don't have 6" subs for many reasons. You would need a lot of them for the output people are looking for. More drivers would mean more coils, which would equate to a greater impedance rise. Less power out of your amplifier.
Also, most people have a decent amount of room for a box.

You can play lower louder, but a 12 and 18 can both play just as low..

I've ran many sizes. The reason I'm running 15's is not to play lower, but to have more output in general.

My SA8v2 is the lowest playing setup I've ever heard. Box tuning was in the 20's. Was it the loudest? No.

Box tuning is more important than cone size, to a point. I'm assuming you've heard good home audio subs that are small. If not, you would be surprised by how low a 6" driver can play in a horn enclosure.

Yes a 8" can play 20hz but what's the point if it's only going to play 20hz at like 80db id rather have same power on more cone area and get louder so I can hear and feel it along with everyone within 2blocks radis. Lol

 

[LosIsATool 5,000+ posts]

Yes a 8" can play 20hz but what's the point if it's only going to play 20hz at like 80db is rather have same power on more cone area and get louder so I can hear and feel it along with everyone within 2blocks radis. Lol

Not everyone has a Tahoe or needs that kind of output. Look at Scott Bulwalda's ISACA car. 2 8s playing strong enough in the 20s to win very high SQ awards

 

[adulbrich 5,000+ posts]

Yes a 8" can play 20hz but what's the point if it's only going to play 20hz at like 80db id rather have same power on more cone area and get louder so I can hear and feel it along with everyone within 2blocks radis. Lol

I had it back before I tore everything out of my car. Space was limited, so one 8 was the best I could fit with enough box volume, lol

 

[potvin]

We don't have 6" subs for many reasons. You would need a lot of them for the output people are looking for. More drivers would mean more coils, which would equate to a greater impedance rise. Less power out of your amplifier. Not for many reasons. Only for the simple reason of why use many smaller subs to achieve the same volume output and low frequency response of what you could achieve with a single big sub.
Also, most people have a decent amount of room for a box.

You can play lower louder, but a 12 and 18 can both play just as low..

Maybe almost but not quite as low. But more importantly, it's the frequency it can play at vs the SPL volume...

It's the same analogy but when comparing a super small subwoofer to a massive one, the difference is huge.

I've ran many sizes. The reason I'm running 15's is not to play lower, but to have more output in general.

My SA8v2 is the lowest playing setup I've ever heard. Box tuning was in the 20's. Was it the loudest? No.

Correct, because it isn't a 12, 15 or 18 inch.

Box tuning is more important than cone size, to a point. I'm assuming you've heard good home audio subs that are small. If not, you would be surprised by how low a 6" driver can play in a horn enclosure.

Box tuning is almost everything yes. But physics overrides that in the end.

 

[LosIsATool 5,000+ posts]

Box tuning is almost everything yes. But physics overrides that in the end.

Did you watch the vids? If so you would not be doing this anymore

 

[adulbrich 5,000+ posts]

Box tuning is almost everything yes. But physics overrides that in the end.

Physics does not "override" box tuning.

Box tuning is based on physics //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

An 18 in a box tuned to 80hz won't play lower than an 8 in a low tuned box (sub-30's).

 

[shauncox26]

Love the 9515 just not a hdd! Im going to build another box tuned around 38hz with more space and extra port area. Also ordering a d.7 oem recone from dd just so noone could say well it doesnt have dd soft parts. Its just as loud as the sp4 and the sp4 was at .35 were the dd is at 1.