Lm3886 Bpa - Page 2

carlosfm · 3rd August 2004, 12:36 PM

I think it has something like around 200~250 wrms at 8 ohms, with lots of current.

This thing should double the power at 4 ohms and almost double again at 2 ohms.

Lazyworm · 28th September 2004, 10:52 AM

Quote:

Originally posted by MWP

AFAIK, the Rowland amp isnt bridge/parallel... its 6 * LM3886s paralled per channel.

That Amp from Rowland (Model12) is indeed bridge parallell, as it is a monoblock you are looking at

I have been on my way to clone it for a long time but now finally I think Ill have the time to fix the last things on it .

jkraxi · 25th March 2005, 01:55 PM

Sorry, I know that is an old post but I have a question for u! Does anybody have a schematic of that (from image) Jeff Rowland's product? PLS!!!

jkraxi · 15th April 2005, 01:56 PM

By the way! What are those orange lines?

thomasfw · 18th April 2005, 02:12 AM

Dear all,
I can see "Micro Relay" and "Trim Pot" in the photo.
What are they use for ?

Thomas

banana · 18th April 2005, 02:27 AM

Those "Dales" are power resistors. The trim port is for DC-offset adjusmnet.

Rowland Concentra Review

thomasfw · 18th April 2005, 02:53 AM

Thanks !
Do you know where we can get the chip and PCB(kit) in Hong Kong ?(Good Price)

Wah Fai, Mak's etc

Thomas

transducer · 18th April 2005, 02:08 PM

Quote:

Originally posted by jkraxi
By the way! What are those orange lines?

I believe that they are the power buss bars. Rowland describes them in one of their reviews or product pages.

I was almost laughing at their "innovative technology" claims. Their marketing guys sure are good.

Ron

thomasfw · 22nd April 2005, 08:05 AM

If the trim pot is for off-set, how to connect ?

Thanks !

Thomas

jaudio · 22nd April 2005, 03:47 PM

It go bewteen the + signal input and ground. I connect two of the pin of the trimpot together,that is connect to + signal input and the remaining pin is connected to ground. This is for inverted mode amp.

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3rd August 2004, 12:36 PM	#11
carlosfm Banned Join Date: Mar 2003 Location: Lisbon, Portugal	I think it has something like around 200~250 wrms at 8 ohms, with lots of current. This thing should double the power at 4 ohms and almost double again at 2 ohms.

25th March 2005, 01:55 PM	#13
jkraxi diyAudio Member Join Date: Dec 2004 Location: Bucharest	Sorry, I know that is an old post but I have a question for u! Does anybody have a schematic of that (from image) Jeff Rowland's product? PLS!!!

15th April 2005, 01:56 PM	#14
jkraxi diyAudio Member Join Date: Dec 2004 Location: Bucharest	By the way! What are those orange lines?

18th April 2005, 02:27 AM	#16
banana diyAudio Member Join Date: Feb 2003 Location: Hong Kong	Those "Dales" are power resistors. The trim port is for DC-offset adjusmnet. Rowland Concentra Review

18th April 2005, 02:53 AM	#17
thomasfw diyAudio Member Join Date: Jan 2005 Location: Hong Kong	Thanks ! Do you know where we can get the chip and PCB(kit) in Hong Kong ?(Good Price) Wah Fai, Mak's etc Thomas

22nd April 2005, 08:05 AM	#19
thomasfw diyAudio Member Join Date: Jan 2005 Location: Hong Kong	If the trim pot is for off-set, how to connect ? Thanks ! Thomas

22nd April 2005, 03:47 PM	#20
jaudio diyAudio Member Join Date: Oct 2004	It go bewteen the + signal input and ground. I connect two of the pin of the trimpot together,that is connect to + signal input and the remaining pin is connected to ground. This is for inverted mode amp.

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