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Thread ID: 87304 2008-02-16 04:20:00 Annoying interference with speakers. jason_f90 (3544) Press F1
Post ID Timestamp Content User
640876 2008-02-16 04:20:00 I got some cheap Ozaki 2.1 speakers off TradeMe for my dads computer. Now everytime he receives or sends a txt or call on his phone the speakers go "bzzzzt bzzt bzzzzt zzzzt" which is really annoying. He still gets this interference even when his phone is up to 3-4m away.

How can I get rid of this interference without investing in a new set of speakers? A friend suggested opening the woofer and wrapping the amp with tin foil. Will that work?
jason_f90 (3544)
640877 2008-02-16 04:25:00 Get the same thing here, the radio picks up someone when they use a mobile, when its nearby. Speedy Gonzales (78)
640878 2008-02-16 04:28:00 It might help. (Be careful to have insulation between the amp and the foil ... you might "fix" it by shorting it and letting the smoke out). But that won't stop the RF signal getting into the amplifier through the leads. There are ferrite units available which can be clipped around cables to help there, but they might cost more than the speakers. ;)

For some reason, NZ doesn't require equipment to meet EMC standards. So junk is imported. It's cheap because it can't be sold in many countries.
Graham L (2)
640879 2008-02-16 10:15:00 I got some cheap Ozaki 2.1 speakers off TradeMe for my dads computer. Now everytime he receives or sends a txt or call on his phone the speakers go "bzzzzt bzzt bzzzzt zzzzt" which is really annoying. He still gets this interference even when his phone is up to 3-4m away.

How can I get rid of this interference without investing in a new set of speakers? A friend suggested opening the woofer and wrapping the amp with tin foil. Will that work?

Yup, I get the buzzing too. Its not that annoying is it? Its only for 2secs at most. Dont know about the tin foil though but it would work I suppose.
beeswax34 (63)
640880 2008-02-16 10:45:00 It goes on for around 5 secs on my dads speakers and it's REALLY loud (5x the speakers volume). I'll try the tin foil tomorrow. jason_f90 (3544)
640881 2008-02-16 19:55:00 I always know in advance when I'm getting a text on my Voda, it upsets my radio. But Telecom does not do it obviously they use different frequencies. gary67 (56)
640882 2008-02-17 01:25:00 I always know in advance when I'm getting a text on my Voda, it upsets my radio. But Telecom does not do it obviously they use different frequencies.

And completely different technologies- CDMA vs GSM
beeswax34 (63)
640883 2008-02-17 01:50:00 Alright I've wrapped tin foil around the tiny amp and now it makes a different sound, sort of "crrrrt grrrrt crrrrt" lol.

I guess I'll have to tell my dad to try to get hold of a non-GSM phone or some magnetically shielded speakers. :(
jason_f90 (3544)
640884 2008-02-17 02:24:00 I think maybe the speakers would be cheaper. Or perhaps just keeping the phone further away from the speakers or putting the phone in a drawer lined with tin foil. beeswax34 (63)
640885 2008-02-17 02:49:00 I think maybe the speakers would be cheaper. Or perhaps just keeping the phone further away from the speakers or putting the phone in a drawer lined with tin foil.

Of course, putting the phoone in a foil-lined drawer will probably significantly reduce its ability to receive messages/calls, if it is able to at all.
somebody (208)
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