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jkurtzman via CarKB.com jkurtzman via CarKB.com is offline
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Default Amp and Sub ratings

I have one question before i buy this system. My Amp is a kicker zx 1000 watt
2 ohm amp. But the sub I want to buy has dual 4 ohms. Am I going to mess
anything up in the process by having different ohm values in these products?
Jus wanting to make sure. Thanks.

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http://www.carkb.com/Uwe/Forums.aspx/car-audio/200712/1

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DJ NoMore DJ NoMore is offline
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Default Amp and Sub ratings

jkurtzman via CarKB.com wrote:
I have one question before i buy this system. My Amp is a kicker zx 1000 watt
2 ohm amp. But the sub I want to buy has dual 4 ohms. Am I going to mess
anything up in the process by having different ohm values in these products?
Jus wanting to make sure. Thanks.

Uh, dual four ohm in parallel gets you about a two ohm nominal load.
Where do you see a problem with that?
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Tre Tre is offline
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Default Amp and Sub ratings

On Dec 26, 6:47 pm, DJ NoMore
wrote:
jkurtzman via CarKB.com wrote:
I have one question before i buy this system. My Amp is a kicker zx 1000 watt
2 ohm amp. But the sub I want to buy has dual 4 ohms. Am I going to mess
anything up in the process by having different ohm values in these products?
Jus wanting to make sure. Thanks.


Uh, dual four ohm in parallel gets you about a two ohm nominal load.
Where do you see a problem with that?


The only problem I c is if u wanna buy 2 subz and then run them
parallel, b cuz they wuold b pushing ur amp @ 1 ohm and that pushes an
amp really hard wen not meant 4 it! I know b cuz I hooked 2 2 ohm
dual voice coil subs parallel off one amp and my amp kept over heating
real bad. Took them to running 2 ohms and they beat my car up!
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DJ NoMore DJ NoMore is offline
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Default Amp and Sub ratings

Tre wrote:
On Dec 26, 6:47 pm, DJ NoMore
wrote:
jkurtzman via CarKB.com wrote:
I have one question before i buy this system. My Amp is a kicker zx 1000 watt
2 ohm amp. But the sub I want to buy has dual 4 ohms. Am I going to mess
anything up in the process by having different ohm values in these products?
Jus wanting to make sure. Thanks.

Uh, dual four ohm in parallel gets you about a two ohm nominal load.
Where do you see a problem with that?


The only problem I c is if u wanna buy 2 subz and then run them
parallel, b cuz they wuold b pushing ur amp @ 1 ohm and that pushes an
amp really hard wen not meant 4 it! I know b cuz I hooked 2 2 ohm
dual voice coil subs parallel off one amp and my amp kept over heating
real bad. Took them to running 2 ohms and they beat my car up!


You could always parallel each individual sub, then connect them in
series OR series each individual sub then connect them in parallel.

All I know is I am going to do a lot of research before I finish the
system in my 2006 Mustang GT due to the fact that I impulse purchased a
setup for my last vehicle, and got screwed out of some power as a result
of it. The installer/salesman knew me from back in the day, and sold me
a relatively inexpensive Memphis setup. Sadly, the DVC 4 ohm 10" sub
had to be wired in series because the amp he sold me was only rated for
4 ohms mono. I really wish he would have sold me a SVC sub @ 4 ohms
instead of pushing the DVC sub because it was "on sale" and I do not
appreciate the fact that he was less than honest about the ratings on
the Memphis Amp. OTOH, he could have sold me a better amp that was
rated for 2 ohms but he wanted to get rid of the stock he had on hand.

My negative experience taught me that if you want something done right,
you have to do it yourself!
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Christopher \Torroid\ Ott Christopher \Torroid\ Ott is offline
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Default Amp and Sub ratings

"DJ NoMore" wrote in message
...
You could always parallel each individual sub, then connect them in series
OR series each individual sub then connect them in parallel.

All I know is I am going to do a lot of research before I finish the
system in my 2006 Mustang GT due to the fact that I impulse purchased a
setup for my last vehicle, and got screwed out of some power as a result
of it. The installer/salesman knew me from back in the day, and sold me a
relatively inexpensive Memphis setup. Sadly, the DVC 4 ohm 10" sub had to
be wired in series because the amp he sold me was only rated for 4 ohms
mono. I really wish he would have sold me a SVC sub @ 4 ohms instead of
pushing the DVC sub because it was "on sale" and I do not appreciate the
fact that he was less than honest about the ratings on the Memphis Amp.
OTOH, he could have sold me a better amp that was rated for 2 ohms but he
wanted to get rid of the stock he had on hand.


This is a single channel amp? You're not as screwed as you think on this.
You could try:

a.) Connecting a single voice coil to your amp. You will still get twice the
power delivered to the sub. The sub may not "snap" as hard as it would with
both coils properly driven, but it should be better than your current 8 ohm
load.

or

b.) Go ahead and connect both coils in parallel (2 ohm) and turn down the
gains on the amp. You would not be the first to overload an amp into thermal
shutdown, and provided you don't push it into operating like that all the
time you should be fine. If you keep the gains down low enough that you can
place your hand on the heatsink when it's working hard there's no reason it
should hurt the amp. Industrial grade electronics are safe to operate
from -40c to +85c (-40F to +185F) and automotive grade increases the top end
to +125c (+257F). That's on the silicon, not the heatsink.

My negative experience taught me that if you want something done right,
you have to do it yourself!


Amen to that...

Chris




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GregS[_3_] GregS[_3_] is offline
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Default Amp and Sub ratings

In article , "Christopher \"Torroid\" Ott" spamtrap at ottelectronics dot com wrote:
"DJ NoMore" wrote in message
m...
You could always parallel each individual sub, then connect them in series
OR series each individual sub then connect them in parallel.

All I know is I am going to do a lot of research before I finish the
system in my 2006 Mustang GT due to the fact that I impulse purchased a
setup for my last vehicle, and got screwed out of some power as a result
of it. The installer/salesman knew me from back in the day, and sold me a
relatively inexpensive Memphis setup. Sadly, the DVC 4 ohm 10" sub had to
be wired in series because the amp he sold me was only rated for 4 ohms
mono. I really wish he would have sold me a SVC sub @ 4 ohms instead of
pushing the DVC sub because it was "on sale" and I do not appreciate the
fact that he was less than honest about the ratings on the Memphis Amp.
OTOH, he could have sold me a better amp that was rated for 2 ohms but he
wanted to get rid of the stock he had on hand.


This is a single channel amp? You're not as screwed as you think on this.
You could try:

a.) Connecting a single voice coil to your amp. You will still get twice the
power delivered to the sub. The sub may not "snap" as hard as it would with
both coils properly driven, but it should be better than your current 8 ohm
load.



Qts will go up. Might work with a closed box, with more boom.

greg

or

b.) Go ahead and connect both coils in parallel (2 ohm) and turn down the
gains on the amp. You would not be the first to overload an amp into thermal
shutdown, and provided you don't push it into operating like that all the
time you should be fine. If you keep the gains down low enough that you can
place your hand on the heatsink when it's working hard there's no reason it
should hurt the amp. Industrial grade electronics are safe to operate
from -40c to +85c (-40F to +185F) and automotive grade increases the top end
to +125c (+257F). That's on the silicon, not the heatsink.

My negative experience taught me that if you want something done right,
you have to do it yourself!


Amen to that...

Chris


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GregS[_3_] GregS[_3_] is offline
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Posts: 664
Default Amp and Sub ratings

In article 7d4761c61612a@uwe, "jkurtzman via CarKB.com" u40152@uwe wrote:
I have one question before i buy this system. My Amp is a kicker zx 1000 watt
2 ohm amp. But the sub I want to buy has dual 4 ohms. Am I going to mess
anything up in the process by having different ohm values in these products?
Jus wanting to make sure. Thanks.


Just connect them in parallel.

greg

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