 OT. How to test speakers without a radio, Fit the 914 speaker covers |
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| bandjoey |
 Nov 23 2014, 07:43 PM
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#1
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bandjoey  Group: Members Posts: 4,926 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region  |
On a chance I picked up a set of oval Blaupunkt speakers thar fit into the speaker grill and shallow enough to fit. They look good but I don't have a radio to test them with. Is there a way to use a multimeter or something to see if they're good?
I might use them oe sell them but first want to know they're working. Attached thumbnail(s)  
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Replies(1 - 5)
| Mueller |
Nov 23 2014, 07:52 PM
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#2
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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voltmeter....
4 ohms for resistance on DC and push, you should see some voltage |
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| fixer34 |
Nov 23 2014, 09:00 PM
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#3
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Senior Member Group: Members Posts: 1,085 Joined: 16-September 14 From: Chicago area Member No.: 17,908 Region Association: Upper MidWest
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Voltmeter will only tell you that the static coil is 'good'. The movable voicecoil could be shot and you won't know. Do you have an old stereo around? (I know, I'm dating myself..) As long as you don't crank up the volume, it should be work.
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| Mueller |
Nov 23 2014, 09:14 PM
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#4
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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Touch a 9vdc battery quickly to the inputs?
Speaker should move and "pop" (no damage unless you kept the battery on for too long....hours or so?) |
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| bandjoey |
Nov 24 2014, 12:22 AM
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#5
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bandjoey Group: Members Posts: 4,926 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region |
Thanks. I didn't want to pull mine off the car but that's the only radio I have. If the voltmeter and 9v test work I'll hook one up in the car to see what works.
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| 76-914 |
Nov 24 2014, 08:57 AM
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#6
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,505 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California
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1.5v D cell works as well. You can confirm the polarity as well this way. If the speaker jumps out at you the polarity is correct. If it jumps away from you the polarity is crossed.
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