Any problem with 2.5, 5, 3 ohm equipment?
Thread Starter
Team Owner
Joined: Feb 2000
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From: Sacramento CA
Any problem with 2.5, 5, 3 ohm equipment?
Any problem running that kind of equipment with a regular amp? The subs I want (5" subs) are 5ohm, so I suppose that makes then 2.5.... that won't make my amp react badly will it? I wouldn't think so but...
The seperates I ordered are 3.7 ohm.
[Modified by Smash, 1:28 AM 2/21/2002]
The seperates I ordered are 3.7 ohm.
[Modified by Smash, 1:28 AM 2/21/2002]
Le Mans Master
Joined: Jul 2000
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From: Joplin MO
Re: Any problem with 2.5, 5, 3 ohm equipment? (Smash)
It all depend on how stable your amp. Some amps are 1 ohm stable bridged while others start to clip or go into protection with any load lower that 4 ohms. With a 5 ohm speaker you have the choice of presneting the amp with a 2.5 ohm load or a 10 ohm load.
Just curious, but who makes a 5 ohm driver? I've never heard of one.
Just curious, but who makes a 5 ohm driver? I've never heard of one.
Safety Car
Joined: Aug 2000
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From: St. Joseph MO
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Re: Any problem with 2.5, 5, 3 ohm equipment? (Smash)
Remember those ratings are "Resistive" only, when the speaker starts to play and begins to build-up heat the actual impedence will increase the overall resistance of the speaker load. Translation, the seperates you bought are 3.7 Ohm, which your amp should have absolutely no problem powering all day long. For subwoofer duty and amplifier running two 4 ohm speakers in parallel should be rated for 2 ohm mono operation and be vented or at least have a good cooling fan.
In my coupe I'm running 2 ohm mono on my sub amp (Audio Art 100HC's for sub and midrange) and 4 ohm stereo on midrange. However since these values are "resistive" my midrange may actually fall to as low as 2.8 ohm's at brief instances due to the passive crossover network.
Main thing is try to match amplifier output rating with the recommeded/reated speaker resistance and you shouldn't have any problems.
In my coupe I'm running 2 ohm mono on my sub amp (Audio Art 100HC's for sub and midrange) and 4 ohm stereo on midrange. However since these values are "resistive" my midrange may actually fall to as low as 2.8 ohm's at brief instances due to the passive crossover network.
Main thing is try to match amplifier output rating with the recommeded/reated speaker resistance and you shouldn't have any problems.
Safety Car
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From: St. Joseph MO
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Re: Any problem with 2.5, 5, 3 ohm equipment? (mrkln)
Just curious, but who makes a 5 ohm driver? I've never heard of one.
Melting Slicks
Joined: Sep 2000
Posts: 2,756
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From: Satellite Beach, FL, USA
Re: Any problem with 2.5, 5, 3 ohm equipment? (JoeyG)
Remember those ratings are "Resistive" only, when the speaker starts to play and begins to build-up heat the actual impedence will increase the overall resistance of the speaker load. Translation, the seperates you bought are 3.7 Ohm, which your amp should have absolutely no problem powering all day long. For subwoofer duty and amplifier running two 4 ohm speakers in parallel should be rated for 2 ohm mono operation and be vented or at least have a good cooling fan.
In my coupe I'm running 2 ohm mono on my sub amp (Audio Art 100HC's for sub and midrange) and 4 ohm stereo on midrange. However since these values are "resistive" my midrange may actually fall to as low as 2.8 ohm's at brief instances due to the passive crossover network.
Main thing is try to match amplifier output rating with the recommeded/reated speaker resistance and you shouldn't have any problems.
In my coupe I'm running 2 ohm mono on my sub amp (Audio Art 100HC's for sub and midrange) and 4 ohm stereo on midrange. However since these values are "resistive" my midrange may actually fall to as low as 2.8 ohm's at brief instances due to the passive crossover network.
Main thing is try to match amplifier output rating with the recommeded/reated speaker resistance and you shouldn't have any problems.
If you ever saturated the core of the speaker by overpowering it, then the impedance will fall dramatically and will be almost equal to the resistance of the voice coil wire. This will basically be a dead short on a large speaker.
Safety Car
Joined: Jul 2001
Posts: 4,178
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From: Windermere FL
Re: Any problem with 2.5, 5, 3 ohm equipment? (99HT)
Your SS amps should be good down to 1 ohm. Consider the seperates 4 ohm for installation purposes. Most car audio is 4 and home 8 ohm. Subs and speakers can be combined in series and parallel to change the ohm rating. See http://www.mobileaudio.com in the FAQ section for all the calculations and wiring diagrams.
Safety Car
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From: St. Joseph MO
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Re: Any problem with 2.5, 5, 3 ohm equipment? (99HT)
The RESISTANCE of a copper wound voice coil will not increase significantly under normal drive levels. You would have to get the wire red hot to see any large change. No speaker is ever a pure resistive load over it's operating frequency range, it almost always has a reactive component too. The two components together are called IMPEDANCE. Impedance has a resistive and a reactive term. The reactive component can be inductive or capacitive. Both components are different at every frequency, cone loading and input power level. A speaker manufacturer simplifies the term impedance by only showing the average value of the vector sum of the two components.
If you ever saturated the core of the speaker by overpowering it, then the impedance will fall dramatically and will be almost equal to the resistance of the voice coil wire. This will basically be a dead short on a large speaker.
If you ever saturated the core of the speaker by overpowering it, then the impedance will fall dramatically and will be almost equal to the resistance of the voice coil wire. This will basically be a dead short on a large speaker.
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Thread Starter
Team Owner
Joined: Feb 2000
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From: Sacramento CA
Re: Any problem with 2.5, 5, 3 ohm equipment? (LOUDSYSTEM)
the Focal 5WS are the ones im sure your refering too
They are excellent speakers
How many did you want to run total?
They are excellent speakers
How many did you want to run total?
Two. I'd be putting them in the stock 6x9 location.. which is in the far rear, they'd point at a 45' angle towards the top of the glass.
[Modified by Smash, 2:34 PM 2/22/2002]
Thread Starter
Team Owner
Joined: Feb 2000
Posts: 51,504
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From: Sacramento CA
Re: Any problem with 2.5, 5, 3 ohm equipment? (JoeyG)
.3 cubic feet
1" diameter 4" deep port
that's from memory though. i know for sure about the 4" port depth and .3 size, not 100% on diameter.
1" diameter 4" deep port
that's from memory though. i know for sure about the 4" port depth and .3 size, not 100% on diameter.
Intermediate
Joined: Feb 2002
Posts: 36
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From: Peoria Arizona
Re: Any problem with 2.5, 5, 3 ohm equipment? (Smash)
you can get much more lower extention from them if you do a bigger box but space is the problem hehe
they just reviewed teh 5WS in a magazine ill get the mag and month for you guys so you can read it
they just reviewed teh 5WS in a magazine ill get the mag and month for you guys so you can read it
