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Location:
brisbane
Registered:
October 2004
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Re: Problems with running 8ohm subs from a 4ohm amp?
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Mon, 15 August 2005 10:40
 
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you need to check 2 things:
amplifier capability:
- what your amplifier is capable of, ie what loads it is stable
of driving
driver configuration:
- what load your driver configuration presents to the amp
once you have choosen a driver configuration that is compatible with the amplifier, you have a setup and you can work out how much power the setup has.
thumbs up on the jaycar amps, they are awesome, i have a few, latest "4x100" model delivers 130x4 wrms.
amplifier capability :
most newer decent amps = bridgable, 2 ohm stable, trimode
bridgable - bridging can only be done with a 4 ohm load
2 ohm stable - a 2 ohm load can be run off a single channel
tri mode - 4 ohm on 1 channel, 4 ohms on adjacent channel, 4 ohms bridged across these two channels
driver configuration :
drivers = 4 ohm single voice coil common
4 ohm dual voice coil common
2 ohm, 8 ohm avaliable
driver load in series = driver 1 + driver 2 +... etc
driver load in parallel (4ohm) : 2 drivers = 2 ohm
4 drivers = 1 ohm
higher impedences (loads) will decrease power and visa-versa, a lower load will increase power.
amplifiers are designed to run certain loads and too low a load will damage the amplifier, too high a load will only decrease power.
clipping is the main destroyer of amplifiers though, having too little power for a driver and cranking the volume up, it sounds like it is distorting but it is clipping. dont do it!
your components are interesting, 8 ohm. probably more suited to a monoblock setup with many drivers to have many drivers and a stable load like 1 ohm on a monoblock. i cant see a way to use all of the power of the amplifier because of the 8 ohm impedence they have, it can all run using less power.
long post, any corrections welcome
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| | Subject | Poster | Date |
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Problems with running 8ohm subs from a 4ohm amp?
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cam_RA40 | Mon, 15 August 2005 08:14 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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Soarer | Mon, 15 August 2005 08:41 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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VeeP | Mon, 15 August 2005 09:57 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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styler | Mon, 15 August 2005 10:40 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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cam_RA40 | Tue, 16 August 2005 03:49 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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justcallmefrank | Tue, 16 August 2005 06:16 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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terra | Tue, 16 August 2005 08:18 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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cam_RA40 | Wed, 17 August 2005 00:23 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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justcallmefrank | Wed, 17 August 2005 00:33 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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Toobs | Wed, 17 August 2005 01:16 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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cam_RA40 | Thu, 18 August 2005 07:48 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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justcallmefrank | Thu, 18 August 2005 07:56 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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justcallmefrank | Thu, 18 August 2005 07:57 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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Smokey228 | Thu, 18 August 2005 08:07 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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cam_RA40 | Tue, 23 August 2005 05:24 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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draven | Tue, 23 August 2005 05:35 |
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Re: Problems with running 8ohm subs from a 4ohm amp?
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justcallmefrank | Tue, 23 August 2005 06:15 |
