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LongFrost
Posted on Tuesday, June 22, 2004 - 04:41 pm:   

So I ditched the 2275 and got a Sixtey five RD 112 instead. The quesiton is this. If the speaker out are in parallell and the back of the amp says to use two 8 Ohm loads when using an extension cab, to switch the amp to 4 Ohm. Can I safely use two sixteen Ohm loads and put the Ohm switch on the back of the amp on 8 Ohms? I could wire my 212 cab to 4 Ohms and only use the main speaker jack, I can't use the 8 Ohm Black widow that is in the RD. I would much rather use 2 16 Ohm loads and take it easy on the transformers. Please be promt as I need to have this problem circumnavigated by this saturday.
Thanx ya'll
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Langley
Posted on Wednesday, June 23, 2004 - 08:52 am:   

See the "Impedance Selector Switch/Output" thread.
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LongFrost
Posted on Wednesday, June 23, 2004 - 02:35 pm:   

That is all well and good but I don't think it really answers my question.
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Langley
Posted on Wednesday, June 23, 2004 - 02:41 pm:   

Best of luck while traveling on your high horse.
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LongFrost
Posted on Thursday, June 24, 2004 - 02:05 pm:   

Sorry buddy, I did not mean to insult your intelligence. I'm not down with the drama. If there is any one else willing to give me a hand in answering the question originaly posted in this thread it would be greatly appriciated. I understand the math. Does it work in application.
I don't want to roast any of the various 1950's or 1960's speakers I would like to use with my RD. If that makes me on a high horse then fine, but it's a nice damn horse. :-)
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Terry
Posted on Friday, June 25, 2004 - 07:51 am:   

http://www.abrown.com/spkrwire.htm
Speaker Wiring Info on Series and Parallel wiring.

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Steve Kennedy
Posted on Saturday, June 26, 2004 - 03:14 pm:   

Using 2 16-ohm loads with the switch on 8-ohms would work fine. However, a problem can surface if you want to use the combo by itself while it is in this 16-ohm configuration.

If you wired in a heavy-duty switch or relay to change your internal speaker configuration from series (16-ohm) to parallel (4-ohm), then you could do either configuration as long as you made sure that both switches (output transformer tap AND speaker configuration) were correct for the application.

Steve

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