Speaker wiring help

  • Thread starter Thread starter shadow070
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shadow070

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hi all,

I have a vew cabs and checked the inside before. I attached two pics.
Each speaker is connected seperatly to the input jacks where both speakers wires are connected again to each other on the input jacks.

Is this parallel wiring?
So two 8 ohm speakers have a 4 ohm impedence?

Thanks in advance!

Robert
 

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Yes that's parallel and I'm assuming that if the yellows match then the polarity will be correct. You can check polarity by plugging in a cable and touching the other end tip/sleeve to the +/- of a 9v battery. Both speakers should move in the same direction.
 
shadow070 said:
hi all,

I have a vew cabs and checked the inside before. I attached two pics.
Each speaker is connected seperatly to the input jacks where both speakers wires are connected again to each other on the input jacks.

Is this parallel wiring?
So two 8 ohm speakers have a 4 ohm impedence?

Thanks in advance!

Robert
Click to expand...
As far as I can see from those pics, the wiring is mono/stereo (somehow automatic selection)

1. amp output plugged into the upper jack - parallel wiring, both speakers engaged, results in 8 Ohm impedance
2. amp output plugged into the lower jack - one speaker is disconnected, just one is engaged, impedance 16 Ohm (ok, 15)
3. both jacks used with a stereo amp - stereo 2 x 16 Ohm
 
mcstinger said:
As far as I can see from those pics, the wiring is mono/stereo (somehow automatic selection)

1. amp output plugged into the upper jack - parallel wiring, both speakers engaged, results in 8 Ohm impedance
2. amp output plugged into the lower jack - one speaker is disconnected, just one is engaged, impedance 16 Ohm (ok, 15)
3. both jacks used with a stereo amp - stereo 2 x 16 Ohm
Click to expand...
No, it's all parallel. It looks like the top and bottom jacks are connected so that the hots jump from one jack to the other, and then each jack feeds the positive terminal of a speaker. Same goes for the negative.

If they are 8 ohm speakers, you should get 4 ohms out of each jack. The best way to know for sure put a DMM on it and test it. It should read in the ballpark of 4 ohms out of both jacks.

Side note: I'm not sure why you would want parallel jacks on a 4 ohm cab. It's rare that guitar heads will do 2 ohms, so you can't daisy chain it to anything, and if you plug in two amps or use both with one head, it could be trouble.
 
BeZo said:
No, it's all parallel. It looks like the top and bottom jacks are connected so that the hots jump from one jack to the other, and then each jack feeds the positive terminal of a speaker. Same goes for the negative.

If they are 8 ohm speakers, you should get 4 ohms out of each jack. The best way to know for sure put a DMM on it and test it. It should read in the ballpark of 4 ohms out of both jacks.

Side note: I'm not sure why you would want parallel jacks on a 4 ohm cab. It's rare that guitar heads will do 2 ohms, so you can't daisy chain it to anything, and if you plug in two amps or use both with one head, it could be trouble.
Click to expand...
As it is obvious from pics, speakers are 15 Ohm. So in parallel they are approx 8 Ohms.

If you plug a jack to the bottom jack, upper jack is disconnected.
 
Yeah, you're right. The speakers in the picture are 16 ohm. The OP claims 8 ohms, and that's where I got that.

I guess we need @shadow070 to chime in to make sure we get this right. Does plugging a cable into the bottom jack lift the tabs off of the lugs and disconnect the top jack? That would make the most sense for this setup.
 
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