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Post by cvogue on Apr 14, 2017 22:04:59 GMT -5
New to the forums but got a new Street Rod today and just thought I'd share! Attachments:
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Post by cvogue on Apr 15, 2017 1:52:32 GMT -5
So quick question for Street Rod gurus... the manual is confusing, does the impedance selector take into account the internal speaker or is it strictly for an external speaker cab? The manual says this should be set to "match the load of the speaker cabinet"
So is that the external cab or both the internal speaker and the external cab?
Thanks!
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Post by gtrjunior on Apr 15, 2017 6:35:21 GMT -5
Welcome!! Hey stranger....lol
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Post by gtrjunior on Apr 15, 2017 6:38:16 GMT -5
I answered this question on the other forum but now that I'm thinking about it. It depends on a few things..... splawndude has and can answer this question better than i can. You have to match the total impedance of the speakers. The more extension cabs you add the lower the impedance becomes(?). Set me straight here Splawndude.
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Post by cvogue on Apr 15, 2017 9:56:00 GMT -5
I answered this question on the other forum but now that I'm thinking about it. It depends on a few things..... splawndude has and can answer this question better than i can. You have to match the total impedance of the speakers. The more extension cabs you add the lower the impedance becomes(?). Set me straight here Splawndude. Hey I know that gtrjunior dude!!! If it is indeed the case where the impedance setting has to match all the speaker cabs (and I think you're right it is that way, no other amp that I know behaves differently, but I thought there might be some Splawn Secret Sauce that has the internal speaker all dialed in automatically and the setting was just for an extension speaker but... that would mean that you couldn't replace the stock speaker with another one with different impedance) then yes as you add speakers the impedence will go down. It's a formula you can look up but as a quick primer if you have two equally rated (same impedance) resistors (speakers) in parallel then the overall impedance would be half. Where you can get into trouble is when you have unequally rated speakers and it results in an impedance that can't be exactly dialed in on the amp (you only have choices of 16, 8 or 4). General formula is 1/((1/x) + (1/y) + (1/z)...) for resistors x,y and z etc...)
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Post by briman on Apr 15, 2017 10:47:12 GMT -5
Welcome cvogue! I think you have to match the impedance to all speakers on load including one in streetrod.
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Post by splawndude on Apr 27, 2017 12:04:53 GMT -5
Congrats on your new amp.
I'm not familiar with the Splawn combos but if the manual says that then I would tend to say that the internal speaker is disabled when an external cabinet it detected.
To be sure, I'd call Scott.
Have fun!
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Post by cvogue on Apr 29, 2017 11:41:45 GMT -5
Congrats on your new amp. I'm not familiar with the Splawn combos but if the manual says that then I would tend to say that the internal speaker is disabled when an external cabinet it detected. To be sure, I'd call Scott. Have fun! Thanks splawndude. The internal speaker is definitely active with an extension cab attached... I'm thinking the impedence selector is for everything, but I'll shoot him an email. Edit: Emailed Scott, he got right back to me, very cool! The impedance setting should account for all speakers in play, internal as well as any external.
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Post by briman on Apr 29, 2017 19:23:22 GMT -5
That's what i guessed but impedance can be confusing when using different size cabs and speakers with varying impedances....It's best to get advice from the creator as you have done!
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Post by gtrjunior on Apr 29, 2017 21:02:28 GMT -5
When I ordered the Small Blocks for my port city I got the 16 ohm....but I wired them in at 8ohm. Since I already had a Marshall cab that ran at 8ohm in mono, I could easily set it up as an extension cab and just flip the impedance to 4 ohm....boom, done. No math quiz.
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