I was wondering when you wire an amp, and you wire your sub for a 2 ohm load when you hook it up to the amp does the load turn into 1 ohm if you bridge it or does it stay 2 ohms? Basically does the amp change the load at all? Thanks
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Never Satisfied!!!
if the load is bridged the amp basically sees half the ohm load that the speakerpresently has, if your amp is 2ohm stable for the stereo channels it will only be 4ohm stable bridged.
do you have model #'s that you can give us or is this completely hypothetical?
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Quad L Handyman services
hypothetically speaking....
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Never Satisfied!!!
that basically the thought if your bridging two channels, amps can handle half the ohm load bridged that each channel can handle independently. (10hm channels can handle 2ohms bridged, 2ohm channels can handle 4ohm bridged, 4ohm channels can handle 8ohm bridged etc. etc.)
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Quad L Handyman services
If you wire you're subs for a 2ohm total load, then the amp will see 2ohms regardless of if you bridge or not. The amp does not change the ohm load, it's how the subs are wired to the amp that changes the load.
If you are running either: (2) 4ohm SVC's, (2) 2ohm DVC's, or (1) 4ohm DVC
Then you can wire into a 2ohm total load. If the "hypothetical" amp is a Class AB, then you better hope that it is 2ohm Mono stable (most Class AB amps are only 4ohm Mono stable). If it is a Class D, then it should be 2ohm Mono stable regardless (most Class D amps are 2ohm Mono stable).
If you are running either: (2) 4ohm DVC's, or (1) 2ohm DVC
Then you can wire into either a 1ohm or 4ohm total load. Very few Class AB amps are 1ohm Mono stable. There are more Class D amps that are 1ohm Mono stable then there are Class AB amps, mainly because Class D amps are designed specifically to run subs.
What you should look at is:
1) What is the impodence (ohm) of the sub I want
2) Is it SVC or DVC
3) What is the RMS and Peak ratings
4) How many subs do you want to install
5) Decide on an amp that will meet both the ohm and RMS values of the sub(s)
Here's an example based on what I currently have...
1) 2ohm
2) DVC
3) 500 RMS / 1000 Peak
4) 2 subs
5) Amp specs needed to be either: (1) amp rated at 1000 x 1 @ 2ohms or 500 x 2 @ 1 or 4 ohms, or (2) amps rated at 500 x 1 @ 1 or 4 ohms.
I went with a Rockford Fosgate Power 1000bd rated 1000 x 1 @ 2ohms.
Just keep in mind that the
amp will not change the ohm level (regardless of if it is bridged or not, as long as the bridge is external). If you supply a 2ohm load to either a single channel or a bridge, the amp will still see 2ohms. It all depends on how
you wire it.
What Ketel22 is refering to is make sure you check you minimum ohm stability of the amp. If you have a Class AB amp, then more than likely it is 2ohm Stereo stable and 4ohm Mono stable. That's what he was refering to when he stated that the ohm load is different when wiring Stereo vs Bridged. It's a "stability" thing, not an "amp changing the load itself" thing.
To answer your question: If you supply a 2ohm load to a Class AB amp then it will see 2ohms regardless of if you are using just 1 of the 2 channels or you bridge. With most Class AB amps you want to supply either (2) 2ohm loads (wiring each sub to it's own channel), or (1) 4ohm bridged load (wiring both subs to the bridge).
Hope that helped. With more specific information I can provide some diagrams that may make it easier to understand.
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Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.comSo DVC woofers are your best choice since they give you maximum flexibility with different amps?
yes, DVC's offer more wiring possibilities. Most DVC's have a higher RMS/Peak value as well
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Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com