diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Headphone Systems (http://www.diyaudio.com/forums/headphone-systems/)
-   -   I'm looking for a LM3875 headphone circuit (http://www.diyaudio.com/forums/headphone-systems/112104-im-looking-lm3875-headphone-circuit.html)

serenella 18th November 2007 08:37 AM

I'm looking for a LM3875 headphone circuit
 
I wolud like to create a headphone amplifier with LM3875. (32 ohm as output or more)
Can you please give me a diagram?? Or waht i have to change from the gainclone standard circuit??
TKS

Paswa 18th November 2007 10:48 AM

Hey, LM3875 for headphone? it is a 56WATT AUDIO AMPLIFIER. It'll certainly destroy to headphone and your ear. Don't make it. Look for headphone amp ICs like http://www.st.com/stonline/stappl/pr...n=&applilevel=

h3ad 19th November 2007 12:33 PM

i agree LM3875 is 2 LM3886's in the 1 package
unless u are extreemly deaf it is not advisable or u could give yourself seriouse hearing damage... even 1W into headphones is extreemly loud, let alone ~60w x 2

Paswa 19th November 2007 02:59 PM

oh, serenella, became mad? don't make it, it'll cause serious injury to your hearing organs

markiemrboo 19th November 2007 05:37 PM

Quote:

Originally posted by h3ad
i agree LM3875 is 2 LM3886's in the 1 package



No, it's not.

Quote:

unless u are extreemly deaf it is not advisable or u could give yourself seriouse hearing damage... even 1W into headphones is extreemly loud, let alone ~60w x 2
Depends on the headphones really I think.

Take a 600R set of headphones that need 1W for, say, 100dB. 1W in to a 600R load needs to swing... 24V ish, and so I would think an LM3875 would work quite well for that.

1W in to a 32R set of headphones, with 1W giving 120dB, however, would only need to swing around 5v (but would 'consume' more current), and I imagine you would be looking at somewhere between 1/4 to a 1/3 on the volume control for some extreme loudness, depending on the source and gain etc.

It won't just dump 60W of power in to the headphones regardless.

Peter Daniel 19th November 2007 06:00 PM

Yes, most of the above suggestions are simply misleading.

LM3875 will work very well as headphone amp without any modifications needed: http://www.diyaudio.com/forums/showt...828&highlight=


All times are GMT. The time now is 12:26 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2