small amp (20-30watt) for fullrange project

wuffer · 15th March 2005, 07:09 AM

can anyone recommend a small amp about 20-30 watt, easy to make.. i was thinking of making speakers for my pc and i would like to try the fullrange...

Nuuk · 15th March 2005, 08:25 AM

Perhaps you cannot 'see the woods for the trees'!

A chip amp is what you want and you are welcome to start looking here

Then follow the GC web ring and you will have all the information that you need.

wuffer · 15th March 2005, 08:28 AM

thanks... just that site i was looking for...

so many designs.. what should i go for...

Nuuk · 15th March 2005, 08:32 AM

Quote:

so many designs.. what should i go for...

My suggestion would be an inverted design using a buffer. Buffer choice is down to what you feel comfortable building, they all sound very good with a GC.

All the designs on my site use the LM3875 but I ahve just built one with an LM3886 that sounds very good too. etails will be posted on DD when I have time.

And don't forget, if you are not happy to build from scratch, there are several people offering PCB's and/or kits.

wuffer · 15th March 2005, 08:58 AM

thanks.. i think im going to build it from scratch..
it dont seem very expensive so im going for it

mod_evil · 15th March 2005, 12:07 PM

Why you use the LM1875 for 20w and LM3875 for 50 ~ 60w ?

wuffer · 16th March 2005, 03:56 PM

what should i use for a volume control??? im going to build it in the same case... nothing fancy or expensive.. only going to use 1 input....

im not sure if i should go for the LM3886 or the LM3875. the price is the same.. going to make a amp for a small 6½ inch sub

Nuuk · 16th March 2005, 05:02 PM

Use the LM3886 for a sub, it will give a bit more power.

And if this is for a sub, any pot will do. Try a 20K or 50K log. If you want specific recommendations, then search this forum.

wuffer · 16th March 2005, 05:05 PM

thanks.. then i will get 2 LM3875 and 1 LM3886

it was for the stereo amp.. but i will search som more

mod_evil · 17th March 2005, 02:08 PM

Quote:

Originally posted by Nuuk
Use the LM3886 for a sub, it will give a bit more power.

And if this is for a sub, any pot will do. Try a 20K or 50K log. If you want specific recommendations, then search this forum.

The datasheet specifics one pot 10k

Thanks

15th March 2005, 07:09 AM	#1
wuffer diyAudio Member Join Date: Feb 2004 Location: denmark	small amp (20-30watt) for fullrange project can anyone recommend a small amp about 20-30 watt, easy to make.. i was thinking of making speakers for my pc and i would like to try the fullrange...

15th March 2005, 08:25 AM	#2
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	Perhaps you cannot 'see the woods for the trees'! A chip amp is what you want and you are welcome to start looking here Then follow the GC web ring and you will have all the information that you need. __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

16th March 2005, 05:02 PM	#8
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	Use the LM3886 for a sub, it will give a bit more power. And if this is for a sub, any pot will do. Try a 20K or 50K log. If you want specific recommendations, then search this forum. __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

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
Best small fullrange for AM radio	Foxx510	Full Range	22	18th September 2008 05:47 AM
How should I fill/stuff/line my small sealed fullrange sphere?	GuyPanico	Full Range	3	9th August 2007 01:15 PM
Can anyone recommend a small 10-30watt DIY amp?	rurockn	Chip Amps	6	13th October 2006 02:39 PM
small fullrange driver help	Pepe	Full Range	6	28th July 2006 04:30 AM
Small fullrange mounted in dash	Techz	Car Audio	0	20th March 2006 01:07 PM


	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

15th March 2005, 08:28 AM	#3
wuffer diyAudio Member Join Date: Feb 2004 Location: denmark	thanks... just that site i was looking for... so many designs.. what should i go for...

15th March 2005, 08:58 AM	#5
wuffer diyAudio Member Join Date: Feb 2004 Location: denmark	thanks.. i think im going to build it from scratch.. it dont seem very expensive so im going for it

15th March 2005, 12:07 PM	#6
mod_evil diyAudio Member Join Date: Dec 2004 Location: Rio	Why you use the LM1875 for 20w and LM3875 for 50 ~ 60w ?

16th March 2005, 03:56 PM	#7
wuffer diyAudio Member Join Date: Feb 2004 Location: denmark	what should i use for a volume control??? im going to build it in the same case... nothing fancy or expensive.. only going to use 1 input.... im not sure if i should go for the LM3886 or the LM3875. the price is the same.. going to make a amp for a small 6½ inch sub

16th March 2005, 05:05 PM	#9
wuffer diyAudio Member Join Date: Feb 2004 Location: denmark	thanks.. then i will get 2 LM3875 and 1 LM3886 it was for the stereo amp.. but i will search som more

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

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