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speaker difference


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jonathancullen 
Silver - Posts: 282
Silver spacespace
Joined: September 22, 2006
Location: United States
Posted: December 03, 2006 at 12:03 PM / IP Logged  

hey jeff you should show us the pic of your box muahahahhaha!!!!!!! xD j/p

ahhh your poor little crx, so much abuse xD

jeffchilcott 
Platinum - Posts: 2,483
Platinum spacespace
Joined: April 11, 2002
Location: United States
Posted: December 03, 2006 at 1:57 PM / IP Logged  
I will say this, and that is all
(6) 10's in less then 5 cu ft, with (2) 6 inch aero ports....good luck finding the ports..they are not easy to find.
There is a little work with angle walls inside of the box, fiberglass to try and hold it together, which didnt go so well I still cracked it twice at finals
lots and lots of power, If I put one amp on this box, it would do horrible...but with 6 on it, it will get very loud
When building a comp box, espicially for a CRX there is a fine line on the box, the consideration comes to the following things
Having a box small enough to help hold the woofers together
Having enough power to still push the woofers to max in such a small box
having the woofers and ports arranged right so that the air flow efficently out of the box.
I wish there was a program or any formulas to help, but nothing works besides trial and error. I have made cahnges of less then 1/2 inch and made substancial gains.
All I can say is come find me at a show next year thoughout the US...I will show people my setup at shows, but I dont like to post pictures of it.
I will go out to the garage in the next few days and possibly take some pictures of old boxes, and kinda do a write up on them
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
jonathancullen 
Silver - Posts: 282
Silver spacespace
Joined: September 22, 2006
Location: United States
Posted: December 03, 2006 at 3:34 PM / IP Logged  
lol cool!
will_22_82 
Copper - Posts: 89
Copper spacespace
Joined: October 07, 2006
Location: United States
Posted: December 05, 2006 at 10:00 PM / IP Logged  

well i am seriously considering going with the hifonics goliath 64oo watt quad coil

but between the 12 to the 15 does that size make a difference as far as spl #'s

coppellstereo 
Silver - Posts: 785
Silver spacespace
Joined: November 21, 2005
Location: United States
Posted: December 05, 2006 at 10:37 PM / IP Logged  
of course size can change things. but going from fours 12s to one 15 ...
jeffchilcott 
Platinum - Posts: 2,483
Platinum spacespace
Joined: April 11, 2002
Location: United States
Posted: December 05, 2006 at 10:55 PM / IP Logged  
I will agree, going from 4 12's each getting half power to going to one 15 with 1/3 power
I think you are going to see a big decrease.
You need to either find subs you can power, like I have suggested.   
Or buy new amplifiers to power what you have now to its potential.
Let me give you a comparison we did a little while back
Both in the proper enclosure for competiton the following woofers did the results with the same power
(2) Kicker L7's being burped with 3800 watts (yes over double the RMS and 800 over peak rating) it yeilded 152.1db
(2) DIgital Designs 9912E's powered with 3800 watts ( slightly over half of the power handling for 1 woofer let alone 2) it yeilded 146.8db
The Kickers less then $200 each
The DD's nearly $800 each
Now with 6600 on each woofer
The kickers can only take about 6600WRMS for a pair, it is alot of power and I was using 2006 10-L7's
Yeild 153.5DB
(2) 12's with 6600WRMS Digital designs 9512e's came to 150.6db
still barly over half the power handling of each woofer
You will not get louder, espically for competition use if you cannot power your equipment properly!
I have made suggestions to you, but you refuse to really consider what I have recomended, weather you go with the subs I suggested or not, I would highly reccomend you work with the subs you have and procede to get more power
By adding power you are going to have to upgrade you Alternator, and have multiple batteries, depending on what competiton organization you are considering they do have battery limits, so if you have one picked out and I can tell you what the rulings would be based on the class you would fall into
Please consider what I have posted, I have spent quite a few years now doing alot of research to get where I am today, Alot of info is private but if you have any specific Questions I can do my best to help!
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
will_22_82 
Copper - Posts: 89
Copper spacespace
Joined: October 07, 2006
Location: United States
Posted: December 05, 2006 at 11:53 PM / IP Logged  

i have a kinetic 800 battery. 2 hifonics 1606d brutus amps. I am going to get more amps of course. but i figured that since my speakers put out the same watt all together ehich is 6400 watt compared to the goliath which is 6400 watts also. my amps will run the speaker i believe. but i was told it would be louder spl wise. guess i was told wrong.

jeffchilcott 
Platinum - Posts: 2,483
Platinum spacespace
Joined: April 11, 2002
Location: United States
Posted: December 06, 2006 at 12:33 AM / IP Logged  
4 amps on one kinetik 800 will do nothing
4 amps on a kinetik 2400 would not even make it
you seriously need to upgrade the charging system before you upgrade your amps!
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
will_22_82 
Copper - Posts: 89
Copper spacespace
Joined: October 07, 2006
Location: United States
Posted: December 06, 2006 at 2:11 PM / IP Logged  
2 brutus hifonics putting out 1800 watts each. I did the math on it. My current setup the subs are getting over half of max
jeffchilcott 
Platinum - Posts: 2,483
Platinum spacespace
Joined: April 11, 2002
Location: United States
Posted: December 06, 2006 at 2:43 PM / IP Logged  
You did the math, but #'s mean nothing untill you measure true output.
AC voltage x AC current on the speaker leads is the only way to find out the true about of power you are actually getting.
I use a fluke DMM and Fluke Clamp meter to make my measurments
I use the note I burp my car at, and hold it for 5 seconds checking where both current and voltage rest at
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
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