Best and most powerful DIY Chip - Page 2

livenicely · 18th November 2009, 08:36 AM

ok and for subwoofer 4780 bridge or tda7294 better

peranders · 18th November 2009, 08:39 AM

I'll suspect Dxvideo haven't implemented the LM4780 well enough since this IC is two LM3886 chips inside. This LM4780 amp sounds quite good.

Dxvideo · 08:43 AM

Quote:

ok and for subwoofer 4780 bridge or tda7294 better

For a subwoofer,
If its 8R your idea is correct,
But if its 4R then you must use them in parallel configuration.
However in other case LM3875 is a better chipamp (not for the subwoofers)..

By the way,

Dear Parenders, have you ever compared a 4780 with a 3875 with simultaneous listenning?

lanchile · 18th November 2009, 01:32 PM

Quote:

Originally Posted by peranders

I'll suspect Dxvideo haven't implemented the LM4780 well enough since this IC is two LM3886 chips inside. This LM4780 amp sounds quite good.

Well. one LM4780 or two LM3886 ,the sound of the LM3875 is better.and in my case I have implemented them well.again this is all in taste.

Dxvideo · 18th November 2009, 01:47 PM

Absolutely what I meant.
I have a lot of comparing implementations with these two amps. And I decided that LM4780 (or 3886) have not enough musical performance as LM3875.

osscar · 18th November 2009, 01:52 PM

I have not listened to much chipamps but I agree - 3875 is better. I certainly like it better then TDA or 3886 chipamps.

jackinnj · 18th November 2009, 02:52 PM

The new LM3875 in an ROHS version has been out for a few months. I agree that the LM3875 is a nice amplifier chip. The LM4780 takes up only a bit more space and is a bit fussy about its skinny pins, but it's a real work-horse.

redrabbit · 18th November 2009, 03:17 PM

Quote:

Originally Posted by GK

Apex PA03.

The last time I ordered a pair of puny to-3 style Apex devices for a work project (since put on hold, so I've managed to avoid telling the boss that I blew one up till now) they cost over $440 AUD each. I shudder to think of what they would charge for one of these.

GK, see ebay item# 320448537988 (USA)

PA-03

=RR=

star882 · 18th November 2009, 03:26 PM

Price out some high power MOSFETs or IGBTs. There's a reason why they're the device of choice in most inverters.

livenicely · 18th November 2009, 03:55 PM

Quote:

Originally Posted by star882

Price out some high power MOSFETs or IGBTs. There's a reason why they're the device of choice in most inverters.

Please if u dont mind clear it u wana say

18th November 2009, 08:39 AM	#12
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	I'll suspect Dxvideo haven't implemented the LM4780 well enough since this IC is two LM3886 chips inside. This LM4780 amp sounds quite good. __________________ /Per-Anders (my first name) or P-A as my friends call me

18th November 2009, 01:47 PM	#15
Dxvideo diyAudio Member Join Date: Nov 2003 Location: Turkey	Absolutely what I meant. I have a lot of comparing implementations with these two amps. And I decided that LM4780 (or 3886) have not enough musical performance as LM3875. __________________ Best regards, Ozgur

18th November 2009, 01:52 PM	#16
osscar diyAudio Member Join Date: May 2009 Location: Riga, LV	I have not listened to much chipamps but I agree - 3875 is better. I certainly like it better then TDA or 3886 chipamps. __________________ Leach amp LM 3875 F5 LM1875 Le Monstre Leach amp2 OPA549 OBH8SE

18th November 2009, 03:26 PM	#19
star882 diyAudio Member Join Date: Mar 2007	Price out some high power MOSFETs or IGBTs. There's a reason why they're the device of choice in most inverters. __________________ "Fully on MOSFET = closed switch, Fully off MOSFET = open switch, Half on MOSFET = poor imitation of Tiffany Yep." - also applies to IGBTs!

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18th November 2009, 08:36 AM	#11
livenicely diyAudio Member Join Date: Nov 2009	ok and for subwoofer 4780 bridge or tda7294 better

18th November 2009, 02:52 PM	#17
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	The new LM3875 in an ROHS version has been out for a few months. I agree that the LM3875 is a nice amplifier chip. The LM4780 takes up only a bit more space and is a bit fussy about its skinny pins, but it's a real work-horse.

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