Re: [AUDITORY] connecting ER2 earphones to old TDT sys3 module

Subject: Re: [AUDITORY] connecting ER2 earphones to old TDT sys3 module

Date: Thu, 16 Nov 2017 14:26:13 +0000

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Comments: To: "Tollin, Daniel" <Daniel.Tollin@xxxxxxxxxxxx>

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Reply-to: Amanda Lauer <alauer2@xxxxxxxx>

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Thread-topic: connecting ER2 earphones to old TDT sys3 module

The ones we have are old and have dual monos.

Thanks!

From: Tollin, Daniel <Daniel.Tollin@xxxxxxxxxxxx>
Sent: Thursday, November 16, 2017 12:56 AM
To: Amanda Lauer
Cc: AUDITORY@xxxxxxxxxxxxxxx
Subject: Re: connecting ER2 earphones to old TDT sys3 module

Amanda

ER2s have a phono plug. You can buy a phono to BNC connector so that you can patch directly into the HB7. As for the ER10b (to presumably measure OAEs), use a pair of ER2s for inputs as specified for the 10b. The ER2s are fantastic at low frequencies (provided correct coupling/sealing to the ear) as they are specifically designed for human input, or any human-appropriate animal model that hears low frequencies (e.g. not mice or rats), measurements with the 10b mic. Be sure to calibrate the system before testing!

Daniel J. Tollin, PhD

Professor

University of Colorado School of Medicine

Department of Physiology & Biophysics/Mail Stop 8307

Research Complex 1-N, Rm 7106

12800 East 19th Ave

Aurora, CO 80045

Tel: 303-724-0625

Fax: 303-724-4501

On Nov 15, 2017, at 10:30 PM, Amanda Lauer <alauer2@xxxxxxxx> wrote:

I have something of an odd question. I need to find an adaptor to connect my ER2 earphone dual-mono male to a single bnc output on a TDT HB7 headphone buffer. Does anyone have a good source for hard to find audio connectors?

Alternatively, can someone recommend a low frequency sound source that can couple with an ER-10B? Our usual equipment is used for testing mice, and we need something that will not have a lot of harmonic distortion below 4 kHz.

Thanks!

Amanda Lauer, Ph.D.
Assistant Professor
Dept. of Otolaryngology-HNS
Johns Hopkins University School of Medicine
443-287-4229