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Thread: Simulated Short? Or Just Simulated? |
    
Bronze Member Username: Invierno
Post Number: 58
Registered: Feb-04
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| Posted on Sunday, June 27, 2004 - 10:33 pm: |
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I recently had a salesperson tell me that the amp he was showing me could handle a complete short of a channel and keep functioning just fine with all other channels -- once the short was fixed the shorted channel would also work fine.
I asked him to demonstrate this and he demonstrated it in the following way: since the amp was bi-wired to the speaker, he simply put both positive bananas to the + and - posts for the high frequencies, and both negative bananas to the + and - posts for the low frequencies.
He said this would simulate a short.
I'm not sure this does simulate a short, since there were no connecting bars between the low frequency and high frequency posts, and as far as I know the internal networks in such speakers are not actually connected.
Anyone else know? Was this a valid example of a short? |
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Bronze Member Username: Invierno
Post Number: 61
Registered: Feb-04
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| Posted on Tuesday, June 29, 2004 - 08:26 pm: |
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Of course, I could always go back, ask him to just touch the negative and positive together directly, and see what happens... |
J. Vigne Unregistered guest |
| Posted on Tuesday, June 29, 2004 - 09:42 pm: |
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If you are saying he took the two positive leads from the hot (+) output of the amplifier and connected them through the driver's voice coil using the positive and negative terminals he simply made loop of the cable and did not have a hot to ground connection. Draw it out on paper. Now take away one of the legs of + and one of -. You can see that all he did was put the driver in the loop of the cable. He loaded the circuit down with resistance but did not create a dead short.
He more than likely was using a demo that someone (a rep?) showed him. No matter, it is a stupid demo. You shouldn't care how an amp reacts with a dead short unless you hook up speaker wires while under the influence. Look for someone who sells their product on how it sounds not how it goes into protection. |
Silver Member Username: Project6
Post Number: 988
Registered: Dec-03
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| Posted on Wednesday, June 30, 2004 - 06:27 am: |
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The rep must be trying to impress a sale. What load of @#!t
Another one that we can put under "how to sell Audio and Video". |
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