Cabinet wiring question

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Bassboar
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Cabinet wiring question

Post by Bassboar »

This most likely extremely stupid, but the wire I have is rated to 50 volts.
Will that handle a 200 watt SS head?
I have no clue about voltage in cabs.
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Re: Cabinet wiring question

Post by Jordan »

You could probably use the formulas here to calculate the minimum wire gauge you'd need (formulas are toward the bottom of the page). I used 240v 10A mains cable for my bass cab...you could cut up an extension lead if you had to. Without doing calculations, I'd say its probably a little on the thin side.
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Re: Cabinet wiring question

Post by Bassboar »

It's 14 gauge wire, so it should be thick enough.
But it says rated for 50 volts, I didn't even know volts were measured in cabs.
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Re: Cabinet wiring question

Post by Jordan »

Maybe the voltage rating has something to do with the thickness or quality of the insulation? Just a shot in the dark.

14 gauge should be plenty for 200 watts, IMO.
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Re: Cabinet wiring question

Post by Bassboar »

I'm going to use my smaller amp to see what's what.
I'll report back in the morning.
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Re: Cabinet wiring question

Post by eatyourguitar »

ohms law guys ohms law. 8ohm speaker, 50v wire, the most watts it can handle is 312.5w @ 6.25A. this is only true if the amp never puts out anything more than 50v absolute value peak. I have no idea what the voltage swing is on a power output for an amp sorry.
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Re: Cabinet wiring question

Post by Bassboar »

According to Nick from Dunwich, I'm good to go.
It's just a rating on the insulation.
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Re: Cabinet wiring question

Post by new05002 »

you can figure out the voltage swing using the power output from the amp and the speaker load. If the power is say 100W and the speaker is 8 ohm. P = V^2/R.

Some algebra gets you V = +(P*R)^(1/2)

V = ~28.28V max
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Re: Cabinet wiring question

Post by Jordan »

eatyourguitar wrote:ohms law guys ohms law. 8ohm speaker, 50v wire, the most watts it can handle is 312.5w @ 6.25A. this is only true if the amp never puts out anything more than 50v absolute value peak. I have no idea what the voltage swing is on a power output for an amp sorry.


Damn. How did I not think of that?...2 hours of sleep last night.
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Re: Cabinet wiring question

Post by Bassboar »

I'm running at 4 ohms.
The amp is doing 250 watts.
Should I be concerned?
Edit: Never mind, just did the math.
Approx 31 volts.
According to what I see, no amp in existence would exceed the rating.
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Re: Cabinet wiring question

Post by new05002 »

Bassboar wrote:I'm running at 4 ohms.
The amp is doing 250 watts.
Should I be concerned?
Edit: Never mind, just did the math.
Approx 31 volts.
According to what I see, no amp in existence would exceed the rating.


Potentially if used a 16 ohm load and 300W but you can always get new wire for the cab no problemo
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