Help with LS70 Crossover Connection
puunda
Posts: 127
Hi Everyone,
I have recently taken out the drivers out of my LS70 to remove the vinyl which was peeling.
Now I am confused as to how the woofers are connected.
The XO diagram shows point
If I use the 32" and 24" together (which seems the most logical to me), both the black and white 32" go to - and both the black and white 24" go to +.
What am I missing?
I have recently taken out the drivers out of my LS70 to remove the vinyl which was peeling.
Now I am confused as to how the woofers are connected.
The XO diagram shows point
- 3 - Black 24" going to + Lower
- 4 - Black 32" going to - Upper
- 5 - White 24" going to +
- 6 - White 32" going to -
If I use the 32" and 24" together (which seems the most logical to me), both the black and white 32" go to - and both the black and white 24" go to +.
What am I missing?
Comments
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"If I use the 32" and 24" together (which seems the most logical to me), both the black and white 32" go to - and both the black and white 24" go to +."
I'm afraid I've read your post a few times and I can't seem to follow your question. Maybe if you used the numbers: 3, 4, 5 and 6 I could better follow? -
SeleniumFalcon wrote: »"If I use the 32" and 24" together (which seems the most logical to me), both the black and white 32" go to - and both the black and white 24" go to +."
I'm afraid I've read your post a few times and I can't seem to follow your question. Maybe if you used the numbers: 3, 4, 5 and 6 I could better follow?
Yes I find it very confusing. How are the drivers meant to be connected?
The cables in the speaker are in pairs - a long b&w cable (3 and 5) for the upper woofer, and a shorter b&w cable (4 and 6) for the lower woofer. But 3 and 5 can't both connect to + to the upper woofer and 4 and 6 can't both connect to - to the lower woofer -
The upper driver has #5 wire connected to its + and #4 wire connected to its -, the lower driver has #3 wire connected to its + and #6 wire connected to its -. The upper and lower drives are connected in series, that's why #5 and #6 wires both connect to the negative binding post.
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SeleniumFalcon wrote: »The upper driver has #5 wire connected to its + and #4 wire connected to its -, the lower driver has #3 wire connected to its + and #6 wire connected to its -. The upper and lower drives are connected in series, that's why #5 and #6 wires both connect to the negative binding post.
That would make sense. But if that's how it's connected, then I think the lengths on the cables is labelled wrong.
#4 and #5 are different lengths, and so are #3 and #6.
The 24" cables should be for the lower driver and the 32" should be for the upper woofer. -
Hi again everyone,
I've still not really got an answer to this, so I'll try rephrasing my question.
Are the woofers supposed to be in phase or out of phase? -
Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
They are in phase with each other.
Instead of the two woofer coils connected in series, substitute a piece of wire for the upper speaker. The signal comes from the positive terminal passes through the piece of wire then goes to the lower speaker. Then the signal completes the path to the negative terminal through the lower speaker's wire. A simple connection. If you think about it that's really all the upper speaker's voice coil is, a long piece of wire wrapped around a circular form. So having two drivers in series doesn't change the polarity of the incoming signal, it moves both cones in the same direction. It doesn't change polarity because it has passed through the upper voice coil.Post edited by SeleniumFalcon on
