topic Re: Cedar 3.5mm jack output impedance in Other/General

Cedar 3.5mm jack output impedance

Mon, 02 Jan 2012 09:14:38 GMT

What is the output imedance of the 3.5mm audio jack in Sony Ericsson J108i (Cedar) ?

Re: Cedar 3.5mm jack output impedance

Sam — Fri, 06 Jan 2012 01:04:25 GMT

This is not information I have, however this level of information can generally be sourced through the white papers for our products located here:

http://developer.sonyericsson.com/wportal/devworld/search-downloads/phonespecs?cc=gb&lc=en

Re: Cedar 3.5mm jack output impedance

Fri, 06 Jan 2012 01:44:34 GMT

Tried the White Papers. Still that information is not there. Maybe I need to measure it myself. I need it because if it is greater than my headphone's impedance, I may damage my headphones (not the one with the phone). And the impedance is not mentioned anywhere. Whereas I could find Xperia's Impedance easily.

Re: Cedar 3.5mm jack output impedance

marantz777 — Thu, 19 Jan 2012 08:33:41 GMT

I dont know the exact impedance, but i'm quite sure it is in the Kohm range and thus compatible with ANY headphones on the market (i tried with several, and didn't notice any small difference in audio volume). It's very unlikely that you can damage both the phone or the headphones connecting a 3.5mm standard audio jack. Also, i tried to connect the cedar to external pre-amp as a mp3 source, and it worked. Volume can be adjusted on cedar to avoid saturation, and pre-amp accept this source without problems. Hope this helps.

Re: Cedar 3.5mm jack output impedance

Thu, 19 Jan 2012 11:03:52 GMT

Thank You! This sure helped.