Re: [AUDITORY] Request for Recommendations: Power Supply and Preamp for Knowles FG-23329 Microphone

Subject: Re: [AUDITORY] Request for Recommendations: Power Supply and Preamp for Knowles FG-23329 Microphone

From: Sathish Kumar <sathish.sreeni58@xxxxxxxxx>

Date: Sat, 26 Jul 2025 23:37:50 +0530

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Comments: To: "Picinali, Lorenzo" <l.picinali@xxxxxxxxxxxxxx>

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Reply-to: Sathish Kumar <sathish.sreeni58@xxxxxxxxx>

Sender: AUDITORY - Research in Auditory Perception <AUDITORY@xxxxxxxxxxxxxxx>

Dear Lorenzo,

Thank you very much for your suggestion and for sharing the reference.

I noticed that the stepped-down output voltage of the RODE VXLR+ is slightly higher (3 - 5V) than the recommended voltage for the Knowles FG-23329 microphone (1.3 - 3V). Is it safe to use it as is?

Kind regards,

Sathish Kumar.

On Fri, Jul 25, 2025 at 2:35 PM Picinali, Lorenzo <l.picinali@xxxxxxxxxxxxxx> wrote:

Hello Sathish,

you can use the power supply from RODE - you can find more infomation about it in our SONICOM HRTF dataset paper - https://doi.org/10.17743/jaes.2022.0066

Best

Lorenzo

--
Lorenzo Picinali
Professor in Spatial Acoustics and Immersive Audio
Dyson School of Design Engineering
Imperial College London
Dyson Building
Imperial College Road
South Kensington, SW7 2DB, London
E: l.picinali@xxxxxxxxxxxxxx

https://profiles.imperial.ac.uk/l.picinali
https://www.axdesign.co.uk/

https://www.sonicom.eu/

From: AUDITORY - Research in Auditory Perception <AUDITORY@xxxxxxxxxxxxxxx> on behalf of Sathish Kumar <sathish.sreeni58@xxxxxxxxx>
Sent: 24 July 2025 11:52 AM
To: AUDITORY@xxxxxxxxxxxxxxx <AUDITORY@xxxxxxxxxxxxxxx>
Subject: [AUDITORY] Request for Recommendations: Power Supply and Preamp for Knowles FG-23329 Microphone

Dear List,

I am currently working on a research project that involves capturing the HRTF of test subjects. Based on a review of the literature, I found that the Knowles FG-23329 microphone is commonly used for this purpose. However, I am having difficulty identifying compatible power supply options and suitable preamplifiers for this microphone.

I would greatly appreciate any recommendations or suggestions for compatible power supplies, preamplifiers, or alternative microphone solutions that could serve a similar purpose.

Thank you

Kind regards,
--

Sathish Kumar

PhD Research Scholar

Department of Audiology and SLP

Kasturba Medical College (MAHE), Mangalore

Mob: 9789447666 || E-mail: sathish.sreeni58@xxxxxxxxx