5 watt class a

arhi45 · 19th November 2009, 06:14 PM

Hello,
There is a Nelson Pass 5 watt class a amplifier, please? I have some small heathsinks.
Thank you.

Zen Mod · 19th November 2009, 06:31 PM

make small Aleph J , or small F5

in any case - don't go bellow 2x15 to 16V PSU ;

rise bias untill you can keep your hand on heatsinks 5sec max

arhi45 · 06:45 PM

Have a a 24V/2A transformer. It's enough ?
Both seems to need much larger heatsinks. Heatsinks I have can dissipate about 30watt of heat.

Zen Mod · 19th November 2009, 06:52 PM

if you use smaller PSU voltages , same as steady current ( Iq) , dissipation will be lower , same as output power

as I said - don't go bellow +/-15 V and 1A Iq , because linearity will suffer

that's exactly 30W dissipation

you'll need 2x12Vac/120VA xformer for that

jleaman · 19th November 2009, 07:20 PM

Build a mini Aleph. :P

Zen Mod · 19th November 2009, 07:40 PM

yup .... and 8 leg critter preamp .......

Mrs.Magura · 19th November 2009, 07:54 PM

I want one of those.

Mrs. Magura

arhi45 · 19th November 2009, 08:02 PM

thanks anyway, I found something.

jleaman · 19th November 2009, 08:03 PM

Quote:

Originally Posted by arhi45

thanks anyway, I found something.

What did you end up going with ?

arhi45 · 19th November 2009, 08:05 PM

3 - 5 Watt Class-A Audio Amplifier - RED - Page80

19th November 2009, 06:14 PM	#1
arhi45 diyAudio Member Join Date: Jul 2003 Location: Orleans France	5 watt class a Hello, There is a Nelson Pass *5 watt* class a amplifier, please? I have some small heathsinks. Thank you.

19th November 2009, 06:31 PM	#2
Zen Mod Official Court Jester diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	make small Aleph J , or small F5 in any case - don't go bellow 2x15 to 16V PSU ; rise bias untill you can keep your hand on heatsinks 5sec max __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery

19th November 2009, 06:38 PM	#3
arhi45 diyAudio Member Join Date: Jul 2003 Location: Orleans France	Have a a 24V/2A transformer. It's enough ? Both seems to need much larger heatsinks. Heatsinks I have can dissipate about 30watt of heat. Last edited by arhi45; 19th November 2009 at 06:45 PM.

19th November 2009, 06:52 PM	#4
Zen Mod Official Court Jester diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	if you use smaller PSU voltages , same as steady current ( Iq) , dissipation will be lower , same as output power as I said - don't go bellow +/-15 V and 1A Iq , because linearity will suffer that's exactly 30W dissipation you'll need 2x12Vac/120VA xformer for that __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery

19th November 2009, 07:20 PM	#5
jleaman diyAudio Member Join Date: Apr 2002 Location: Nanaimo	Build a mini Aleph. :P __________________ Baby Danika, Born January 20th 1:54am.. http://itsparks.dyndns.orgMix a LittleUntangle&Opendns.org Perfect..


	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

19th November 2009, 07:40 PM	#6
Zen Mod Official Court Jester diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	yup .... and 8 leg critter preamp ....... __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery

19th November 2009, 07:54 PM	#7
Mrs.Magura diyAudio Member Join Date: Jan 2008	I want one of those. Mrs. Magura

19th November 2009, 08:02 PM	#8
arhi45 diyAudio Member Join Date: Jul 2003 Location: Orleans France	thanks anyway, I found something.

19th November 2009, 08:05 PM	#10
arhi45 diyAudio Member Join Date: Jul 2003 Location: Orleans France	3 - 5 Watt Class-A Audio Amplifier - RED - Page80

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

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
10,000 watt class D amp	BillyDoc	Class D	19	8th May 2009 07:58 PM
pass 20 watt class a	amp-guy	Pass Labs	1	17th October 2004 10:38 AM
JLH 10 Watt class A amplifier #2	DomKo	Solid State	8	30th October 2003 12:32 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