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Russell H.
Russell H., Service Tech
Category: Electronic Musical Instruments
Satisfied Customers: 11195
Experience:  8+ years of professional experience
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I have a 40 xl. When I connect my computer {recorded

Customer Question

I have a 40 xl. When I connect my computer {recorded backround} to the aux in jack , I get an awful static sound. If I cover the strings it is not heard. Can you help me?
Submitted: 10 months ago.
Category: Electronic Musical Instruments
Expert:  Russell H. replied 10 months ago.

Hi, thank you for contacting My name is Russell. I will do my best to provide the right answer to your question.

The loud burst of staticky noise could be from either of two causes.

One, you may have the computer on a different power circuit, causing the ground level to be different from that of the 40XL. If so, this could be quite hazardous to the equipment, causing (eventually) damage to either or both devices.

But the more likely cause is AGC at a high level before signal is supplied by plugging in the jack. AGC varies the amplification level to try to emphasize faint input and de-emphasize loud input, and with no input, it tends to be automatically turned up high... thus even a little static electicity on the jack, when plugged in, sounds like a very loud burst.

The cure to that is to have the jack from the computer plugged in all the time, pretty much. The AGC on the input of your 40XL will stay at a moderate level, there will be no burst of static, and you will be able to keep it that way by controlling the sound input from the computer by switching it Off, or On, at the right times.

If this answers your question, please rate my answer. A five-star rating would be appreciated!

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