decision on system

Subject: decision on system Fri Jun 27, 2008 2:22 am

have 4 mt15 on 2 db drive2000.1 amplifier. each amplifier gets .05
result is 160. db

decided to go with

4 new mt15 -different ohms-on 4 db drive2000.1 amplifier. each amp gets .05 ohm.
result is 161. db

is this normal or should i have gotten more out of it? i was expecting atleast 2 db more.

oh it is a caravan with wall.

Subject: Re: decision on system Fri Jun 27, 2008 3:08 am

what diff IMP did you go with??? and what IMP was the old woofers????

Subject: Re: decision on system Fri Jun 27, 2008 3:12 am

slumpinhonda wrote:: what diff IMP did you go with??? and what IMP was the old woofers????

old dual 2.
2 sub on 1 amplifier =.05
new dual 1.
1 sub on 1 amplifier = .05

Subject: Re: decision on system Fri Jun 27, 2008 3:22 am

phasing?

Subject: Re: decision on system Fri Jun 27, 2008 5:32 am

what is phasing and can someone exlpain it to me i keep hearing about it but haven't learned what it is just yet or how to set the phasing on my amps cause i run a dual amp setup also

Subject: Re: decision on system Fri Jun 27, 2008 5:47 am

http://en.wikipedia.org/wiki/Phase_margin

Subject: Re: decision on system Fri Jun 27, 2008 5:54 am

thanks mo i knew if anybody know u know or know where i could find out more about it anyway lol

Subject: Re: decision on system Fri Jun 27, 2008 6:00 am

Np. Glad to help Wink

Subject: Re: decision on system Fri Jun 27, 2008 6:10 am

well damn mo i read that thing and now ihave a headache and its too damn early in the morning for something like that. lol but i will catch with that later on in the day that way my brain won't freeze up lol

davi d

Subject: Re: decision on system Fri Jun 27, 2008 6:36 am

Dave dude you can do it,what's up man?

Subject: Re: decision on system Fri Jun 27, 2008 8:32 am

for real? .05??? or .5 ?

Subject: Re: decision on system Fri Jun 27, 2008 9:02 am

djman37 wrote:: for real? .05??? or .5 ?

sorry .5

Subject: Re: decision on system Fri Jun 27, 2008 9:09 am

I am lost on the phasing thing?
figure double the power will get more DB

Subject: Re: decision on system Fri Jun 27, 2008 9:12 am

batt draw as well on 2 amps you were probly conservative onn the batts now you added 2 more batts, and lowered impedance as well

Subject: Re: decision on system Fri Jun 27, 2008 9:27 am

Don't forget about the possibility of the subs being maxed out. Adding more power may not pick up. You would have to change the box design to handle the extra power.

Subject: Re: decision on system Fri Jun 27, 2008 9:43 am

ohm is still same with new subwoofer. .5 ohm on each amp
did that too double on the batts with the 2 additional amps .

Subject: Re: decision on system Fri Jun 27, 2008 10:10 pm

Anymore suggestions?

Subject: Re: decision on system Fri Jul 04, 2008 12:35 pm

Subject: Re: decision on system Fri Jul 04, 2008 12:41 pm

gains all the same??? what urs voltage drop? Impedance rise? prolly around 2.....

Subject: Re: decision on system Fri Jul 04, 2008 6:23 pm

theoretically you gain 3 db doubling power, but in most real world applications its around 1.5-2db. the fact that your running mts in a caravan, you shouldve seen atleast a 2.5-3db gain. figure out you imp. rise and pm me and ill see if i can help you out.

Subject: Re: decision on system Fri Jul 04, 2008 11:31 pm

charlesestes wrote:: figure out you imp. rise and pm me and ill see if i can help you out.

What if you have no impedance rise? A lil off topic, but I have 2 18s dual 1.5 ohm coils that read 1.4 ohms each.
I ran one sub in my trunk for a while and seen about 1.7 ohms of rise.
Now I rebuilt and built my first wall (around 11 cubed after bracing, port, and sub displacement). I thought I would have a lot of rise, but when all my coils are wired in parallel for both subs my ohm load flexuates around .2 to .3 ohms.
Wheres my rise at, did I build my wall bad? It just kinda baffled me. Lol

Subject: Re: decision on system Sat Jul 05, 2008 1:28 am

audiofanaticz wrote:

charlesestes wrote:: figure out you imp. rise and pm me and ill see if i can help you out.

What if you have no impedance rise? A lil off topic, but I have 2 18s dual 1.5 ohm coils that read 1.4 ohms each.
I ran one sub in my trunk for a while and seen about 1.7 ohms of rise.
Now I rebuilt and built my first wall (around 11 cubed after bracing, port, and sub displacement). I thought I would have a lot of rise, but when all my coils are wired in parallel for both subs my ohm load flexuates around .2 to .3 ohms.
Wheres my rise at, did I build my wall bad? It just kinda baffled me. Lol

No impedance rise? That had to be a perfect box LOL

Subject: Re: decision on system Sat Jul 05, 2008 2:51 am

Its not a box, its a wall Smile

But for real, none what so ever. I thought I would of been having a lot. I was even scared to use the 10gauge stinger wire Josh hooked me up with just because of any sort of rise.

Subject: Re: decision on system Sat Jul 05, 2008 10:16 am

imped rise is not with everything off. rise is figured after you turn it on full burp what the subs actually read in the specific box. You will just about always have rise. I won't say always cause there is no always lol.

take acv/aca=rise

Subject: Re: decision on system Sat Jul 05, 2008 1:11 pm

Talonesi wrote:: imped rise is not with everything off. rise is figured after you turn it on full burp what the subs actually read in the specific box. You will just about always have rise. I won't say always cause there is no always lol.

take acv/aca=rise

that is final imp. You have to minus that from initial imp to get your rise.