ohms?
07-23-2007, 08:43 AM
#1
0 Watt CAFz'r
Thread Starter
Join Date: Jul 2007
Posts: 5
ohms?
I have a kenwood 9103D 1800watt peak amp. I am wondering what is the difference between 2 ohms and 4 ohms and how to choose them. As well how do I don't overcook my subs or amp if not correctly chosen with subs of the same ohms. thanks for reading this post 
07-23-2007, 08:50 AM
#2
First, IGNORE anything that says max or peak. Talk real power.
Second, your amp will have a certain rms power for a certain ohm value.
Example: 915 watts rms @ 2 ohm.
If you use one 2 ohm sub, you'll get 915 watts before clipping.
OR you can use two 4 ohm subs, in paralell for a 2 ohm load.
Guess how much power each sub will get?
Thats the 800th time i've explained that.
Wht don't they teach basic electronics in grade school?
2 + 2 = 4
4 / 2 = 2
Second, your amp will have a certain rms power for a certain ohm value.
Example: 915 watts rms @ 2 ohm.
If you use one 2 ohm sub, you'll get 915 watts before clipping.
OR you can use two 4 ohm subs, in paralell for a 2 ohm load.
Guess how much power each sub will get?
Thats the 800th time i've explained that.
Wht don't they teach basic electronics in grade school?
2 + 2 = 4
4 / 2 = 2
Last edited by Tom.F.1; 07-23-2007 at 10:51 AM.
07-23-2007, 09:37 PM
#3
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yah the kenwood amp will pump out this
500 rms x 2 channells
800 rms x 1 channell
"If you use one 2 ohm sub, you'll get 915 watts before clipping.
OR you can use two 4 ohm subs, in paralell for a 2 ohm load.
Guess how much power each sub will get?"
what is clipping? and how do i do them paralell?
super noob at understanding this
500 rms x 2 channells
800 rms x 1 channell
"If you use one 2 ohm sub, you'll get 915 watts before clipping.
OR you can use two 4 ohm subs, in paralell for a 2 ohm load.
Guess how much power each sub will get?"
what is clipping? and how do i do them paralell?
super noob at understanding this
07-24-2007, 08:27 AM
#4
Originally Posted by Lenihan
yah the kenwood amp will pump out this
500 rms x 2 channells
800 rms x 1 channell
500 rms x 2 channells
800 rms x 1 channell
500 w rms @ 4 ohm
900 w rms @ 2 ohm
Wasn't it ohms you asked about in the first place?
Now you need to decide if you're going to run 1 or 2 subs?
I like 2. Two 4 ohm subs that will take 450 w rms each is what you need.
Then we'll get into single or dual voice coil.
12" CVR's are rated 400 rms. Since they're dual voice coil, you'd want the 2 ohm version. Wire the coils on each in series and run both to the amp in paralell. Throw them in a cheappy bassworks box and you're done.
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07-24-2007, 02:40 PM
#5
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Posts: 5
Wow I didn't know their was this much to subs . Whats the difference between a single or dual voice coal and "Wire the coils on each in series and run both to the amp in paralell." Whats wireing in series and parallel. is their a webpage or somethen that can teach me a bit about it thanks for the time you have spent answering these questions.
. Whats the difference between a single or dual voice coal and "Wire the coils on each in series and run both to the amp in paralell." Whats wireing in series and parallel. is their a webpage or somethen that can teach me a bit about it thanks for the time you have spent answering these questions.
07-24-2007, 03:50 PM
#7
while we are on the discussion of ohm maybe someone can clairfy this one for me
JL 500/1v2
Rated Power: 500 W RMS @ 1.5 ohm - 4 ohm (11V-14.5V)
does that mean that it only puts out 500 W RMS from 1.5 ohms - 4 ohm?
unlike the Kenwood amplifiier that put out more Watts at the lower ohm
seems strange to me if my amp works like that and others don't
JL 500/1v2
Rated Power: 500 W RMS @ 1.5 ohm - 4 ohm (11V-14.5V)
does that mean that it only puts out 500 W RMS from 1.5 ohms - 4 ohm?
unlike the Kenwood amplifiier that put out more Watts at the lower ohm
seems strange to me if my amp works like that and others don't
07-24-2007, 04:51 PM
#8
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Join Date: Jun 2007
Posts: 109
yeah, my clarion is like that:
CEA 2006 Power Ratings: 450W × 1 Into 4 Ohms, 20Hz-20kHz @ < 0.05%THD
CEA 2006 Power Ratings: 800W × 1 Into 1 or 2 Ohms, 20Hz-20kHz @ < 0.1%THD
i don't really understand how/why they do that, but meh, it sounds good
CEA 2006 Power Ratings: 450W × 1 Into 4 Ohms, 20Hz-20kHz @ < 0.05%THD
CEA 2006 Power Ratings: 800W × 1 Into 1 or 2 Ohms, 20Hz-20kHz @ < 0.1%THD
i don't really understand how/why they do that, but meh, it sounds good
07-24-2007, 05:32 PM
#9
Yankee
Join Date: Oct 2003
Posts: 3,599
Originally Posted by wiltshire559
while we are on the discussion of ohm maybe someone can clairfy this one for me
JL 500/1v2
Rated Power: 500 W RMS @ 1.5 ohm - 4 ohm (11V-14.5V)
does that mean that it only puts out 500 W RMS from 1.5 ohms - 4 ohm?
JL 500/1v2
Rated Power: 500 W RMS @ 1.5 ohm - 4 ohm (11V-14.5V)
does that mean that it only puts out 500 W RMS from 1.5 ohms - 4 ohm?
Originally Posted by ryannow
yeah, my clarion is like that:
CEA 2006 Power Ratings: 450W × 1 Into 4 Ohms, 20Hz-20kHz @ < 0.05%THD
CEA 2006 Power Ratings: 800W × 1 Into 1 or 2 Ohms, 20Hz-20kHz @ < 0.1%THD
i don't really understand how/why they do that, but meh, it sounds good
CEA 2006 Power Ratings: 450W × 1 Into 4 Ohms, 20Hz-20kHz @ < 0.05%THD
CEA 2006 Power Ratings: 800W × 1 Into 1 or 2 Ohms, 20Hz-20kHz @ < 0.1%THD
i don't really understand how/why they do that, but meh, it sounds good
Clarion did it to keep the amp inexpensive to make more power into lower loads it would have missed its price point
