Question regarding the terminals on theCHR 70 (Omnes Audio BB 4.AL) - diyAudio
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Old 24th November 2012, 05:03 PM   #1
eladmi is offline eladmi  Germany
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Location: Hannover
Default Question regarding the terminals on theCHR 70 (Omnes Audio BB 4.AL)

Hi there

I have an old pair of the nice looking black CHR 70s (Omnes Audio BB 4.AL) laying around. I would like to build some quick bookshelf cabinets with those for a friend of mine. While examining the driver I could not find any marks which terminal is positive and which terminal is negative.

Click the image to open in full size.

I appreciate any hint. Thank you.


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Old 24th November 2012, 05:26 PM   #2
zman01 is offline zman01  Bangladesh
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Join Date: Feb 2011
Location: Dhaka

It should be the first one counting from left side of the pic you have provided. Can you check the black part where the terminals are fixed? If you look carefully there should be a + and - sign engraved.

Besides you can do the following.

1. Connect a red wire to one terminal post of the Omnes BB4.AL
2. Connect white color wire on another post of the driver
3. Take a 1.5 volt AA or AAA battery
4. Make contact with negative end of battery and white wire and hold (keep contact)
5. Now make contact between positive terminal of the battery and red wire
6. If speaker cone moves forward (outward) then the speaker terminal with red wire is the + one
7. If speaker cone moves inward then the terminal with white wire connected is +
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Old 24th November 2012, 08:31 PM   #3
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There should be a + and - on the black strip holding the terminals. Sometimes kinda hard to see.

community sites,, ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
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Old 27th November 2012, 08:50 PM   #4
eladmi is offline eladmi  Germany
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Join Date: Sep 2010
Location: Hannover
Thanks guys

I will post an result as soon as I tested the speakers.

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