LM3886 vs TDA7294

Tobruk · 27th November 2005, 06:18 PM

Hi,
which sounds better...?
Thanks in advance....

Leolabs · 28th November 2005, 01:48 AM

Depends on matching speaker.Hard to tell which is better.

Dont mind change your user name to El Alamein,hehe

thomgun_lc · 28th November 2005, 04:18 AM

Hi there,i'm eager to build this 7294's amp to compare with my LM3886.3886 has a great sound but i don't know about TDA 7294 sound. Can 7294 beat 3886??i still don't know. Some people said that 7294 better than 3886.

But, i still very happy with my gainclone 3886.

regards
---------
TomZ

Jay · 28th November 2005, 04:27 AM

It's different. 7294 is more flat throughout audio band. It's also a bipolar vs mosfet issue here. Mosfet amp doesn't easily satisfy listener. It needs suitable driver and may be speaker, and of course specific requirement.

Most listener (about 70% I guess) will prefer the 3886. But I like 7294 better than 3875. Haven't done a "fair" comparison with 3886 tho. I guess most listener will prefer 3886 over 3875

Jay · 28th November 2005, 04:33 AM

Hi thomgun,

Please remember that ICs have "classes". The worst class is fake IC. Almost all (famous) IC you can get in the market (Jakarta especially) is not first class. So beware of that.

3886/3875 is available only during last year. And I haven't seen a bad "class" of 3886 yet. But 7294 has been in the market for so many years.

thomgun_lc · 28th November 2005, 04:46 AM

Hi Jay!! How was ur project?After u said to me if u like TDA7294's sound, i want to try that chip. After search some article i found that this chip is DMOS. Maybe i will get the sound of a MOSFET with a simple schematic.

Maybe this cheap can beat LM3886's chip.
But, the biggest problem about this project, there is many fake chip. Difficult to find original chip.
Jay,is TDA7294 a very common IC in our country?

regards
---------
TomZ

thomgun_lc · 28th November 2005, 04:55 AM

Ok JAY.But,it is difficult to find the original 7294.
I got 3886's IC from my friend which order this ic from NATIONAL directly.So,I'm sure i got original 3886.It's dangerous if our system using fake IC. The worst case is, this fake IC can be explode.

How to know which is original and fake IC?

thomgun_lc · 28th November 2005, 05:02 AM

I'm also heard that 7294 have 2 version.How about that?

sangram · 28th November 2005, 05:15 AM

7294 has higher power and drive capability than 3886. Also very very robust chips, specially if they're genuine (Elektor had some kits, those chips are 100% genuine) - mine has lasted about 8 years, driving different types of speakers and now doing bass amp duty in a band...

However it's horses for courses, and since they're not too expensive to build, ideally you should build both and check which one you prefer. I myself prefer building 7294 for others and National's line for myself. That way I get to tell people - 'These are the chips in the famous BOSE Acoustimass system' and they go 'Ahhhhhhh'. I bet they'll think that 47Labs is some cheap roadside outfit.

jaudio · 28th November 2005, 10:05 AM

Quote:

Originally posted by sangram
7294 has higher power and drive capability than 3886.

According to the application notes the power supply voltage are about the same and there is a 1.5 amp difference in current.

tda7294 +/-40 10A
lm3886 +/-42 11.5A

lm3886 might deliver more power.

27th November 2005, 06:18 PM	#1
Tobruk diyAudio Member Join Date: Oct 2005	LM3886 vs TDA7294 Hi, which sounds better...? Thanks in advance....

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28th November 2005, 01:48 AM	#2
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Depends on matching speaker.Hard to tell which is better. Dont mind change your user name to El Alamein,hehe

28th November 2005, 04:18 AM	#3
thomgun_lc diyAudio Member Join Date: Mar 2005 Location: Indonesia	Hi there,i'm eager to build this 7294's amp to compare with my LM3886.3886 has a great sound but i don't know about TDA 7294 sound. Can 7294 beat 3886??i still don't know. Some people said that 7294 better than 3886. But, i still very happy with my gainclone 3886. regards --------- TomZ

28th November 2005, 04:27 AM	#4
Jay diyAudio Member Join Date: Feb 2003 Location: Jakarta	It's different. 7294 is more flat throughout audio band. It's also a bipolar vs mosfet issue here. Mosfet amp doesn't easily satisfy listener. It needs suitable driver and may be speaker, and of course specific requirement. Most listener (about 70% I guess) will prefer the 3886. But I like 7294 better than 3875. Haven't done a "fair" comparison with 3886 tho. I guess most listener will prefer 3886 over 3875

28th November 2005, 04:33 AM	#5
Jay diyAudio Member Join Date: Feb 2003 Location: Jakarta	Hi thomgun, Please remember that ICs have "classes". The worst class is fake IC. Almost all (famous) IC you can get in the market (Jakarta especially) is not first class. So beware of that. 3886/3875 is available only during last year. And I haven't seen a bad "class" of 3886 yet. But 7294 has been in the market for so many years.

28th November 2005, 04:46 AM	#6
thomgun_lc diyAudio Member Join Date: Mar 2005 Location: Indonesia	Hi Jay!! How was ur project?After u said to me if u like TDA7294's sound, i want to try that chip. After search some article i found that this chip is DMOS. Maybe i will get the sound of a MOSFET with a simple schematic. Maybe this cheap can beat LM3886's chip. But, the biggest problem about this project, there is many fake chip. Difficult to find original chip. Jay,is TDA7294 a very common IC in our country? regards --------- TomZ

28th November 2005, 04:55 AM	#7
thomgun_lc diyAudio Member Join Date: Mar 2005 Location: Indonesia	Ok JAY.But,it is difficult to find the original 7294. I got 3886's IC from my friend which order this ic from NATIONAL directly.So,I'm sure i got original 3886.It's dangerous if our system using fake IC. The worst case is, this fake IC can be explode. How to know which is original and fake IC?

28th November 2005, 05:02 AM	#8
thomgun_lc diyAudio Member Join Date: Mar 2005 Location: Indonesia	I'm also heard that 7294 have 2 version.How about that?

28th November 2005, 05:15 AM	#9
sangram diyAudio Member Join Date: Sep 2002 Location: India	7294 has higher power and drive capability than 3886. Also very very robust chips, specially if they're genuine (Elektor had some kits, those chips are 100% genuine) - mine has lasted about 8 years, driving different types of speakers and now doing bass amp duty in a band... However it's horses for courses, and since they're not too expensive to build, ideally you should build both and check which one you prefer. I myself prefer building 7294 for others and National's line for myself. That way I get to tell people - 'These are the chips in the famous BOSE Acoustimass system' and they go 'Ahhhhhhh'. I bet they'll think that 47Labs is some cheap roadside outfit.

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