lm3886 current at pin 8

jaudio · 28th December 2004, 04:25 PM

Has anyone noticed? when you change current at pin 8, you also change the sound of the chip. I replaced the resistor at pin 8 from 57.6k to 24.5k and the chip sounded brighter

Or is just me?

psychosteve · 28th December 2004, 05:58 PM

yes, i dont think it doesnt do the chip much good to vary the resisistor too much, thats because its the mute pin and your kinda putting the mute on a little bit, or taking it off a little bit. altering the current to and from pin 8 bleeds the input signal thuss altering the tonal quality of the outputt. or so i understand. see you soon, steve.. ..

peranders · 28th December 2004, 07:39 PM

Quote:

Originally posted by jaudio
Has anyone noticed? when you change current at pin 8, you also change the sound of the chip. I replaced the resistor at pin 8 from 57.6k to 24.5k and the chip sounded brighter

Or is just me?

Haven't checked this but may have something to do with change of gainbandwidth product. You should have less than 33 k. You can also check the datasheet about this.

jaudio · 29th December 2004, 10:59 AM

I used 57.6k to get the minimum required current at pin8(.5mv) according to the datasheet. I compare it to another lm3886 amp with 24k the sound is different. I'd really like to get opinions from others(how it sound to them).

28th December 2004, 04:25 PM	#1
jaudio diyAudio Member Join Date: Oct 2004	lm3886 current at pin 8 Has anyone noticed? when you change current at pin 8, you also change the sound of the chip. I replaced the resistor at pin 8 from 57.6k to 24.5k and the chip sounded brighter Or is just me?

28th December 2004, 05:58 PM	#2
psychosteve diyAudio Member Join Date: Sep 2004 Location: coventry england	yes, i dont think it doesnt do the chip much good to vary the resisistor too much, thats because its the mute pin and your kinda putting the mute on a little bit, or taking it off a little bit. altering the current to and from pin 8 bleeds the input signal thuss altering the tonal quality of the outputt. or so i understand. see you soon, steve.. .. __________________ you all laugh because im different, i laugh because youre all the same.. ..

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
LM3886 Pin7(gnd) current?	Arx	Chip Amps	14	18th July 2007 03:51 PM
LM3886 Current needs.	svbear	Chip Amps	13	29th April 2007 09:11 PM
LM3886 Max Current	thomasfw	Chip Amps	1	24th May 2005 08:03 AM
LM3886 Quiescent current	NITRO	Chip Amps	4	20th April 2005 11:06 PM
LM3886 and it's quiescent current	Toster	Chip Amps	5	5th May 2003 11:23 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

29th December 2004, 10:59 AM	#4
jaudio diyAudio Member Join Date: Oct 2004	I used 57.6k to get the minimum required current at pin8(.5mv) according to the datasheet. I compare it to another lm3886 amp with 24k the sound is different. I'd really like to get opinions from others(how it sound to them).

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)