Help ... Ohm, Impendance, "As My Brain Gently Bleeds" |
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Help ... Ohm, Impendance, "As My Brain Gently Bleeds" |
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Mar 6 2009, 11:35 PM |
You got a head 4 Ohm. And a cabinet at 8 Ohm.
For these occacions I think of Andrew's 1'st impedance rule that says "Speak to high and your head will fry" Meaning in this case that if the cabinet you connect has an impedance higher than the head impedance, things could cook. So with reference to Andrews first impedance rule I'd say your idea is nothing to recommend. -------------------- My bands homepage
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Mar 6 2009, 11:51 PM |
I'm afraid it cannot be done mate. You can possibly try to alter the speakers wiring inside the cab, so you connect them in different way so you match the speakers impendance with the head. If you want to do some soldering, tell use what speakers are in the cab, and what is the labeled impendance on them, and we will come up with the wiring.
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Mar 7 2009, 12:16 AM |
Hmm I thought you could connect higher impedance cabs to lower heads no problem but not vice versa... ???
I have 4 ohm bass "head in a combo" and inside is the 8ohm speaker...Since its 8ohm speaker , the head is not working on its 250watts and 4 ohm but lower something like 170watts.In manual it says that the extension speaker out is wired in series so when I add more cabs impedance goes even higher to 16ohm etc...They wired it in series because of safety reasons (higher impedance can't hurt the amp they say)...From what I found by research online when you connect higher impedance speaker (8ohm) to 4 ohm head , power drops but amp runs cooler. This rule is only for straight HEAD to CAB CONNECTION! If you are connection multiple cabs or have a combo amp you need to properly match impedance depending on internal wiring of extension speaker jack in order not to hit lower impedance (bellow 4ohm) which amp can't handle! This post has been edited by Bogdan Radovic: Mar 7 2009, 12:18 AM -------------------- For GMC support please email support (at) guitarmasterclass.net
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