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Post by laethageal on Jan 19, 2018 12:08:33 GMT -7
Hello, I've had an IB setup of 4 Adire Audio Brahma matched with one Behringer EP4000 amp + velodyne equalizer. I've always found the setup to have something lacking and went to check the wiring but am not sure it was done correctly. They are in a 2 - 2 facing configuration. Wiring look this way. prntscr.com/i2ssxnIs that wrong, and if so, how should I modify it ? |
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Post by ThomasW on Jan 19, 2018 19:50:31 GMT -7
I've never seen anything wired like what's shown in the drawing Been a long time since the Adire drivers were around so I don't remember their impedance. This page shows how to wire most sets of woofers www.bcae1.com/spkrmlti.htm |
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Post by laethageal on Jan 19, 2018 22:10:42 GMT -7
That's dual voice coil woofer at 2ohm each. I'll try to take a look at that page, thanks.
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sor
New Member
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Post by sor on Jan 20, 2018 9:16:19 GMT -7
There's nothing wrong with the way they're wired now, assuming the binding posts are configured as I've drawn below. You have one 2 ohm voice coil (green) from each speaker in series, making 4 ohms (blue). The other pair of voice coils are also in series, making 4 ohms. Then they're attached in parallel to the amp (orange), making a 2 ohm load. Check the polarities and ensure the wiring goes into a positive, out a negative, into another positive, and returns out the negative... like you would stack two batteries together.  I think most people wire it more like this second example I've drawn up. Grouping the two coils on the same speaker in series makes it more clear that you have one 4 ohm speaker connected to another 4 ohm speaker in parallel.  The supposed benefit of the way you currently have it wired is that the electrical wave is hitting both coils in one speaker at the same instant. If you think of the voice coils like you would think of electrical transformer coils, the two coils are most likely to be phase aligned with the signal if you don't have the signal going through one coil and then the other, but instead in parallel. In reality the speed of electricity is fast enough that it doesn't make a practical difference |
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sor
New Member
Posts: 12
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Post by sor on Jan 20, 2018 9:28:04 GMT -7
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Post by laethageal on Jan 20, 2018 13:48:33 GMT -7
There's nothing wrong with the way they're wired now, assuming the binding posts are configured as I've drawn below. You have one 2 ohm voice coil (green) from each speaker in series, making 4 ohms (blue). The other pair of voice coils are also in series, making 4 ohms. Then they're attached in parallel to the amp (orange), making a 2 ohm load. Check the polarities and ensure the wiring goes into a positive, out a negative, into another positive, and returns out the negative... like you would stack two batteries together. I think most people wire it more like this second example I've drawn up. Grouping the two coils on the same speaker in series makes it more clear that you have one 4 ohm speaker connected to another 4 ohm speaker in parallel. The supposed benefit of the way you currently have it wired is that the electrical wave is hitting both coils in one speaker at the same instant. If you think of the voice coils like you would think of electrical transformer coils, the two coils are most likely to be phase aligned with the signal if you don't have the signal going through one coil and then the other, but instead in parallel. In reality the speed of electricity is fast enough that it doesn't make a practical difference Thank you much, both of you. Reading you say about the signal hitting the voice coil at the same time does bring up some memory about being told this. I'll check up on the polarity of the wiring to see if it matches your drawing. Edit: The only difference compared to your polarity is that the - of the amp was linking to the + of the driver and the inverse for the other pole. I've switched it to see if there's some difference. |
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Post by ThomasW on Jan 21, 2018 8:03:49 GMT -7
What about this setup did you find lacking?
Do you have some REW measurements?
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