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 Amplifier and Speaker/Woofer Resistant, Also known as OHM !

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TSAmedion
post Sep 27 2006, 04:49 PM, updated 20y ago

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Ok, i've learnt this somewhere in ICE forum but forgotten already. Didn't touch ICe for almost 2 years. I'm looking for Amplifier and Woofer now. So, i just wanna make sure both can match.

Now what i wanted to know is the ohm(s)...

Let say i got a monoblok amp that can do :-
- 300W RMS 4ohms
- 500w RMS 2ohms
- 700w RMS 1ohm

And woofer that states the specification as following :-
- 300w RMS 4 ohms

Note that I installing 2 piece of Woofers..

What i wanted to ask is.. If i connect the amplifier to run at 1ohm.. Will the woofer blow? Cause if i run at 4 ohms if not enuff...
kong5091
post Sep 27 2006, 05:11 PM

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What will happen if i connect 8ohm(home speaker) to a 4ohm amp?
TSAmedion
post Sep 27 2006, 05:19 PM

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QUOTE(kong5091 @ Sep 27 2006, 05:11 PM)
What will happen if i connect 8ohm(home speaker) to a 4ohm amp?
*
laugh.gif That want i don't know.. That's why i am asking here..
The amp running at 1ohm.. The woofer will follow ? rclxub.gif
valve_300b
post Sep 27 2006, 05:26 PM

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QUOTE(Amedion @ Sep 27 2006, 04:49 PM)
Ok, i've learnt this somewhere in ICE forum but forgotten already. Didn't touch ICe for almost 2 years. I'm looking for Amplifier and Woofer now. So, i just wanna make sure both can match.

Now what i wanted to know is the ohm(s)...

Let say i got a monoblok amp that can do :-
- 300W RMS 4ohms
- 500w RMS 2ohms
- 700w RMS 1ohm

And woofer that states the specification as following :-
- 300w RMS 4 ohms

Note that I installing 2 piece of Woofers..

What i wanted to ask is.. If i connect the amplifier to run at 1ohm.. Will the woofer blow? Cause if i run at 4 ohms if not enuff...
*
2 pieces of woofer i suppose if both are 4 ohm, it should be 2 ohm if u wire parallel.

no ur woofer will not blow if u wire it at 1ohm, in which if u have Dual voice coil woofer (both), it should be 1 ohm if u wire parallel. however, you can wire serial and parallel and it should be 4 ohm. But the 4 ohm wiring will not have as much power as the 1 ohm. However, it is easier to drive a 4 ohm than a 1 ohm woofer

Kong, no it's not a problem connecting a 8ohm woofer. In fact, it is easier for the amplifier easier to drive it.

edit: typo

This post has been edited by valve_300b: Sep 27 2006, 05:38 PM
alvin_goh
post Sep 27 2006, 05:27 PM

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svc or dvc?
TSAmedion
post Sep 27 2006, 05:38 PM

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I think u guyz mistaken already.. I am not asking how to wire it to get 1ohm.. That one i know.. I am asking... The spec on woofer states 4OHM.. if i wired the amp and woofer to run at 1ohm.. The woofer can blow/burn or not since the spec is 4ohms..
TSAmedion
post Sep 27 2006, 05:40 PM

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QUOTE(valve_300b @ Sep 27 2006, 05:26 PM)
2 pieces of woofer i suppose if both are 4 ohm, it should be 2 ohm if u wire parallel.

no ur woofer will not blow if u wire it at 1ohm, in which if u have Dual voice coil  woofer (both), it should be 1 ohm if u wire parallel. however, you can wire serial and parallel and it should be 4 ohm. But the 4 ohm wiring will not have as much power as the 1 ohm. However, it is easier to drive a 4 ohm than a 1 ohm woofer

Kong, no it's not a problem connecting a 8ohm woofer. In fact, it is easier for the amplifier easier to drive it.

edit: typo
*
Thanks for the advise.. Now i get it.. It will not burn.. I know powering at 4ohms is easier.. Problem is monoblok amp that has 600w rms @ 4 ohms is crazy already.. I cannot afford that.. laugh.gif I can only afford those 300w RMS @ 4 ohms.. 700w RMS @ 1 ohm.. whistling.gif

This post has been edited by Amedion: Sep 27 2006, 05:41 PM
valve_300b
post Sep 27 2006, 05:46 PM

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QUOTE(Amedion @ Sep 27 2006, 05:38 PM)
I think u guyz mistaken already.. I am not asking how to wire it to get 1ohm.. That one i know.. I am asking... The spec on woofer states 4OHM.. if i wired the amp and woofer to run at 1ohm.. The woofer can blow/burn or not since the spec is 4ohms..
*
get 2 x DVC woofer. wire them parallel and you'll get 1 Ohm
valve_300b
post Sep 27 2006, 05:48 PM

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QUOTE(Amedion @ Sep 27 2006, 05:40 PM)
Thanks for the advise.. Now i get it.. It will not burn.. I know powering at 4ohms is easier.. Problem is monoblok amp that has 600w rms @ 4 ohms is crazy already.. I cannot afford that..  laugh.gif I can only afford those 300w RMS @ 4 ohms.. 700w RMS @ 1 ohm..  whistling.gif
*
trust me, you do not want to go down to 1 ohm. watt and ohm is just part of the equation of having loud sound.

In the other hand, if u have a higher efficent woofer, you will not need that much power nor if you need to go that low to get the juice.
craziechild
post Sep 27 2006, 05:59 PM

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using a 8ohm will be easier to drive from your amp but the power will be divided... say the amp is 300w rms at 4 ohm... connecting it to a 8 ohm will be 150w rms at 8ohm only... and yes the good thing is the amp will run cooler and thus more efficient... and people who run 8 ohm are normally looking to control their sub bass more...

while for the amp to run 1 ohm on a 4 ohm sub... i think shouldn't be a problem if your sub can handle all the extra power... over powering your sub will kill it faster... and your amp will be running much hotter than running 4 ohm... thus also shorten its life span... by how much depends on how you use your things...

cheers...
TSAmedion
post Sep 27 2006, 05:59 PM

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Erm.. The woofer i planning to get is 12" 300w RMS DVC 4 ohms..

2 pcs will be 600w rms...

If i run the amp at 500w rms @ 2ohms.. Not enuff juice..

The woofer i think can stand till 600w RMS.. More than that is burn liao..
TSAmedion
post Sep 27 2006, 06:01 PM

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QUOTE(craziechild @ Sep 27 2006, 05:59 PM)
using a 8ohm will be easier to drive from your amp but the power will be divided... say the amp is 300w rms at 4 ohm... connecting it to a 8 ohm will be 150w rms at 8ohm only... and yes the good thing is the amp will run cooler and thus more efficient... and people who run 8 ohm are normally looking to control their sub bass more...

while for the amp to run 1 ohm on a 4 ohm sub... i think shouldn't be a problem if your sub can handle all the extra power... over powering your sub will kill it faster... and your amp will be running much hotter than running 4 ohm... thus also shorten its life span... by how much depends on how you use your things...

cheers...
*
Yeah.. The question is " MY woofer can handle the power and 1ohm or not ? " .. laugh.gif
howiechoo
post Sep 27 2006, 06:13 PM

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no matter how many ohm, ur woofer sure can take it...the prob here is the RMS.....just dun go beyond the stated rms then it will be okay
TSAmedion
post Sep 27 2006, 06:30 PM

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QUOTE(howiechoo @ Sep 27 2006, 06:13 PM)
no matter how many ohm, ur woofer sure can take it...the prob here is the RMS.....just dun go beyond the stated rms then it will be okay
*
Ok then my problem solved here.. notworthy.gif
driftmeister
post Sep 27 2006, 07:39 PM

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QUOTE(kong5091 @ Sep 27 2006, 05:11 PM)
What will happen if i connect 8ohm(home speaker) to a 4ohm amp?
*
will need bigger power since most of the amp is use on 4ohm load
cky6667
post Sep 29 2006, 12:21 PM

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wat...bro...u also ned advise ah???u veli pro d woh..hahahaa
TSAmedion
post Sep 29 2006, 02:35 PM

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QUOTE(cky6667 @ Sep 29 2006, 12:21 PM)
wat...bro...u also ned advise ah???u veli pro d woh..hahahaa
*
laugh.gif Cannot ar !?

 

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