bgowdy
5,000+ posts
Heroes are remembered, but legends never die
calm down, judging by his join date its very possible that he is newer to audio, and doesnt understand that yet
bgowdy
What makes you think I'm not calm?
It doesn't take a bass head to understand the formula for area.
bgowdy
5,000+ posts
Heroes are remembered, but legends never die
well you may be calm, but that may not be the first thing he thought to research. Hell when i first got into car audio years ago i thought it worked the same way, until someone explained it to me...... Example - 1 12" sub x 4 subs = 48 inches... To someone that is just starting this will make sense to them until its found through searching or explained.
bgowdy
5,000+ posts
Heroes are remembered, but legends never die
you are correct but not everyone is going to think of that at first. Some will, some wont. i completely understand it now but when i started it made more sense the incorrect way lol
OP
big scott
blazin low, and loud
- Thread Starter
- #21
thanks guys,
but its not all cone...
as im not going to use the same type of sub...
so you have to think about power also.
and thats why i posted as im not sure if one of them would win over the other ( power - vs- cone )
meaning..
4- 12" ill have to feed it less power... as only 2.5 coils... hds2 ( 600rms) per
2- 15" i can feed lot more power... as there 3" coils.. hdc3 ( 1500rms ) per
if i go with 4-12 ill just keep mu ba7000 on all.
if i do 2- 15" ill do 1 amp on each sub.
that wa the plan..
now i could do 2 amps on the 12" so.. it sounds like its a toss up.
as im trying to get louder...
but its not all cone...
as im not going to use the same type of sub...
so you have to think about power also.
and thats why i posted as im not sure if one of them would win over the other ( power - vs- cone )
meaning..
4- 12" ill have to feed it less power... as only 2.5 coils... hds2 ( 600rms) per
2- 15" i can feed lot more power... as there 3" coils.. hdc3 ( 1500rms ) per
if i go with 4-12 ill just keep mu ba7000 on all.
if i do 2- 15" ill do 1 amp on each sub.
that wa the plan..
now i could do 2 amps on the 12" so.. it sounds like its a toss up.
as im trying to get louder...
bgowdy
5,000+ posts
Heroes are remembered, but legends never die
^^^this
You can have cool cone area build that requires less power which also results in less money for amps and electrical upgrades if you have not already. Also can be just as loud or louder then the 15s. So for me im going with side with the 12s. ive also seen plenty of hds2 12s handle 1k clean after rise to say they should be good for 4k if you wanted to run one to the 4
Popwarhomie
5,000+ posts
RIP CA.com.
Throw the HDS2 12s in a 4th order.
OP
big scott
blazin low, and loud
- Thread Starter
- #25
exactly...
thanks very much.
and yes i know each will handle more power but im only going by rated...
as there's no set in stone max power......
were as i consider rated as set in stone... because if they blow on rated im getting a new fee sub....lol
Ratio seems to be a bad way to design a 4th. In theory you get more spl at a narrower range with a higher ratio. Flatter response but less output at smaller. I just recently built a 4 12 2.5 : 1 and the customer is thrilled but for my taste I'd go lower ratio. If it can't play Late Night Tip loud across all it's frequencies then it's no good IMO. You'll need to model it on a computer. And don't be afraid to give em plenty of power if you're sealed section is relatively small and your subs are inverted.
Popwarhomie
5,000+ posts
RIP CA.com.
You have plenty of room for 4 12" 4th order. Ratios depend on what your looking for really. A large bandwidth, numbers, or a mix of both.
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