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#378149 - 06/08/12 01:30 PM High pitched hum with Mac Mini.
a401classic Offline
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Registered: 11/29/06
Posts: 1328
Loc: Alpharetta, GA
This sort of thing always reminds me of Christmas Vacation's Grandma saying "it's making a funny squeaking sound". So we're all at my brother- in-laws and he has a Mac mini connected to a pioneer avr, amongst other connections like blu ray and wii. Only when feeding from the mini does he get a high pitched whine, both with streaming and disc play. Not a 60hz noise, but much higher. He does not have cable TV and all electrical connections run thru a 2-prong plug, so no ground-loop issue.

Any thoughts?
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#378150 - 06/08/12 01:42 PM Re: High pitched hum with Mac Mini. [Re: a401classic]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 18044
Loc: NoVA
What output is he using on the mini? And what generation of mini is it?
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#378151 - 06/08/12 01:58 PM Re: High pitched hum with Mac Mini. [Re: Ken.C]
a401classic Offline
connoisseur

Registered: 11/29/06
Posts: 1328
Loc: Alpharetta, GA
HDMI from mini to avr. About this mac says mid 2010, 2.4ghz IC2Duo, running OSX Lion.

While looking at connections, he does have a cable modem, but he's using the Ethernet connection from modem to mini...
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#378153 - 06/08/12 02:20 PM Re: High pitched hum with Mac Mini. [Re: a401classic]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 18044
Loc: NoVA
Hmm. So not so easy to just plug in a pair of headphones and see if you hear it... might be worth a go anyway. Just see if it's a software thing or a hardware thing.
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#378154 - 06/08/12 02:29 PM Re: High pitched hum with Mac Mini. [Re: a401classic]
nickbuol Online   content
axiomite

Registered: 09/16/04
Posts: 5324
Loc: Marion, IA
You will need to buy a white, proprietary Apple de-squeaker. They are a bit pricey, but your life will be better with it of course and you will never know what you did without it. There will be a newer de-squeaker out next year that won't be much better, but you will be convinced through clever marketing that you need it. You seem smart enough to know that is just a rouse since you already own a 2 year old Mac...

Sorry, I couldn't resist.
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#378156 - 06/08/12 02:46 PM Re: High pitched hum with Mac Mini. [Re: nickbuol]
a401classic Offline
connoisseur

Registered: 11/29/06
Posts: 1328
Loc: Alpharetta, GA
Smart, of course wink but also very gullible. Search for de-squeaker turned up nada. A link, perhaps?
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Scott

My HT

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#378161 - 06/08/12 03:38 PM Re: High pitched hum with Mac Mini. [Re: a401classic]
ClubNeon Offline
connoisseur

Registered: 02/06/09
Posts: 3466
Loc: Western Maryland, USA
I've heard that type of noise before, but it was always the analog sound card picking up something from within the computer. HDMI should be digital all the way, so noise shouldn't be able to sneak in.

In other words...I dunno.
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#378179 - 06/08/12 05:45 PM Re: High pitched hum with Mac Mini. [Re: a401classic]
nickbuol Online   content
axiomite

Registered: 09/16/04
Posts: 5324
Loc: Marion, IA
I actually own a de-squeaker...

This picture is almost a year old, but she is still compact and really has a knack for ripping the squeakers out of her toys....


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2-M60s, VP180, 8-M3s, SVS 20-39PCi, DIY Sub, 8-Shakers, JVC RS45, Anthem MRX-1120

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#378180 - 06/08/12 05:51 PM Re: High pitched hum with Mac Mini. [Re: nickbuol]
J. B. Offline
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Registered: 01/19/11
Posts: 1291
Loc: Quebec, Canada
very nice photo of your dog (He speaks). :-)
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