Main Forums >> Mac Music
        Print Thread

Pages: 1

Joined: 28/08/02
Posts: 68
Loc: Home, at last.
Mac Mini and Interference Problem
      #1034863 - 23/02/13 04:53 PM

I have been suffering from a debilitating interference problem ever since I moved house and set up my studio. I have stripped down the studio to see at what point the interference comes back and I need some help to solve this

I removed every connecting and power cable and then slowly built up the system as follows:

speakers (inactive) and amp.
Mac Mini
NEC monitor
Alesis io14 using Firewire to Mac Mini, audio cables to Amp.

At this point, the high pitched interference started again.

Turning off the monitor doesn't stop it, but unplugging it from the mains does. I have plugged the monitor into a separate power socket - no change.
I have inserted a DI box between the Alesis and the Amp and this has reduced the interference, but not stopped it.

The interference seems linked to changes on the monitor.

I haven't yet connected up the rest of the studio as this seems to the root of the noise. Can anyone help me eradicate this?

I do have another monitor on the way, but I was intending to use both monitors in an extended desktop.


I've just plugged in one of my synths (large analogue modular). The monitor interference can now be controlled using the input level on the Alesis. Isolating the synth using the DI box gets rid on the this, but the original volume of interference reurns (I only have one DI box).

Yours Aye


Never underestimate the stupid people

Edited by Stuadh (23/02/13 05:19 PM)

Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
active member

Joined: 29/10/02
Posts: 1732
Loc: Officially, I do not exist.
Re: Mac Mini and Interference Problem new [Re: Stuadh]
      #1035360 - 27/02/13 09:22 AM
Sounds like the Alesis box is the problem. Maybe it got knocked during the move, or maybe a different electrical environment puts more demand on its not-very-thorough shielding. Confirm or deny this by using a different i/o device, or by just using the Mac's native audio out. If this makes the noise go away, have the bloke in the shop take a look at the Alesis.

Instant gratification is actually pretty good. It's fast as well.

Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top

Joined: 10/02/06
Posts: 1538
Re: Mac Mini and Interference Problem new [Re: Stuadh]
      #1035437 - 27/02/13 04:44 PM
Make sure you keep power sources away from audio signal cables.

Also shorter audio cables may help, longer ones can act like an antenna.

If other pieces of gear are affected, could be dirty power to your building.

Studio G-fx 15inch quad-core i7 Macbook Pro Logic9.1.8, LPX 10.0.3

Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Pages: 1

Rate this thread

Jump to

Extra Information
0 registered and 7 anonymous users are browsing this forum.

Moderator:  David Etheridge, James Perrett, zenguitar, Martin Walker, Forum Admin, Hugh Robjohns, Zukan, Frank Eleveld, SOS News Editor,  
Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled
Thread views: 2537

June 2016
On sale now at main newsagents and bookstores (or buy direct from the SOS Web Shop)
SOS current Print Magazine: click here for FULL Contents list
Click image for June 2016
DAW Techniques


Home | Search | News | Current Issue | Tablet Mag | Articles | Forum | Blog | Subscribe | Shop | Readers Ads

Advertise | Information | Privacy Policy | Support | Login Help


Email: Contact SOS

Telephone: +44 (0)1954 789888

Fax: +44 (0)1954 789895

Registered Office: Media House, Trafalgar Way, Bar Hill, Cambridge, CB23 8SQ, United Kingdom.

Sound On Sound Ltd is registered in England and Wales.

Company number: 3015516 VAT number: GB 638 5307 26


We accept the following payment methods in our web Shop:

Pay by PayPal - fast and secure  VISA  MasterCard  Solo  Electron  Maestro (used to be Switch)  

All contents copyright © SOS Publications Group and/or its licensors, 1985-2016. All rights reserved.
The contents of this article are subject to worldwide copyright protection and reproduction in whole or part, whether mechanical or electronic, is expressly forbidden without the prior written consent of the Publishers. Great care has been taken to ensure accuracy in the preparation of this article but neither Sound On Sound Limited nor the publishers can be held responsible for its contents.
The views expressed are those of the contributors and not necessarily those of the publishers.

Web site designed & maintained by PB Associates | SOS | Relative Media