[RNLD] Hiss and the Marantz PMD670

[Hiram Ring]

Hiss can also be due to an ungrounded or 'dirty' power source, as sometimes your microphone cable will pick up signals from external electrical sources. I ran into this issue in India.

  If your laptop is plugged into an electrical outlet for example, try unplugging the laptop and running it only on the battery. Make sure that the only equipment running in the room/area you're recording in is running on battery. Also try to ensure that cables are not crossing or otherwise making contact with each other.

Testing combinations of power-sources and cable setups can help you troubleshoot to identify the precise source of the hiss, or whether it is due to something else. Marantz is known to have a small amount of hiss generally (google 'marantz pmd670 hiss'), though not necessarily more than other solid-state recorders, or your condenser mic may not be ideal for pairing with the PMD670.

Best,
Hiram
_______________
Hiram Ring
PhD Student, Grammatical Description and Documentation
Nanyang Technological University
http://www.ntu.edu.sg

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Towards A Sustainable Earth: Print Only When Necessary

On Jul 20, 2012, at 1:42 PM, Frank Seidel wrote:

> Dear Ann,
> 
> I am by no means an expert. But these are the things that I would check and consider. Unfortunately, you are very vague about your situation, so it might be the case that you already excluded these:
> 
> 1) Does the Marantz' 670 use sd-cards? I do not know that generation of Marantz very well but, maybe it has issue with certain SD cards. Check if the hiss is there even, if you use the SD card that came with the device.
> 2) You might have Phantom power on and are running the mic from a battery at the same time (which would be a bad thing anyways).
> 3) The mic is damaged or incompatible for some reason with the Marantz. Check if the hiss is there, if you use other microphones. See this webpage by Bartek Plichta on more of this issue: http://bartus.org/akustyk/noise_testing.php.
> 4) You are recording with a mono-mic, but still record on both channels owing to the settings you chose on the Marantz.
> 
> These are but some possibilities, but you might check these until somebody who knows more about these things answers.
> 
> All the best of luck with this.
> 
> Frank
> 
> 
> On Thu, Jul 19, 2012 at 7:53 PM, Anna Ash <MRALC at westnet.com.au> wrote:
> Dear list members, and recording experts in particular,
> We are having difficulty in recording with a Marantz PMD670 in WAV format. We are using a condensor mic, but are still getting unacceptable hiss levels. We can rule out interference from fluorescent lights and a nearby laptop.
> Thanks in advance
> Anna
> -- 
> Anna Ash
> Coordinator-linguist
> Many Rivers Aboriginal Language Centre
> C/- Muurrbay
> 14 Bellwood Road
> Nambucca Heads NSW 2448
> Ph. (02) 6568 5695 Mob: 0404 456 992
> Fax. (02) 6569 4295
> web: www.muurrbay.org.au
> email: MRALC at westnet.com.au (I don’t check my google address)
> 
> Please consider the environment and use recycled paper if you need to print.
> 
> 
> 
> -- 
> Frank Seidel, Ph.D.
> University of Florida
> Center for African Studies at the University of Florida
> 427 Grinter Hall - PO Box 115560
> Gainesville, FL 32611-5560
> Tel: 352.392.2183
> Fax: 352.392.2435
> 

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