BALANCED LINE DRIVER,PCB layout share - Page 3

markp · 29th October 2004, 05:02 PM

Actually it is on the order of 4 times the power, not twice. A bridged amp produces twice the voltage which means 4 times the power but the load each amp sees is half the impedence so use 8 ohm speakers not lower or the amp will think its driving a sub-4ohm load.

troystg · 29th October 2004, 06:23 PM

Thanks Mark-

And hopefully he is using multiple chips per "phase or side".

Evilsizer · 10th November 2004, 12:30 PM

so if i wanted to use a 4ohm load would i need to use another 2amps bridged the same way then parralle them?

ble0t · 10th November 2004, 02:15 PM

Pretty much....you'd need a parallel-bridged configuration...there are a bunch of posts concerning in here in the 'Chips Amps' section

cdoggy81 · 11th November 2004, 05:12 AM

Looks good! Let us know how it is all working

digi01 · 12th November 2004, 12:35 AM

thank you

I am assembling it now.each module is ready

pic,

digi01 · 12th November 2004, 12:48 AM

Finally, I find a suitable chassis(factory OEM).
it has enough room for setting up different designs

I am interested in several following results:
1,3886igc/3875nigc/4780 with unregulator psu
2,3886igc/3875nigc/4780 with regulator psu
3,3875nigc with BLD
4,3886igc/4780 with BLD,bridging work

BTW,thanks BranGT,he has offered two 3875 and 4780 to help me to test.

digi

troystg · 12th November 2004, 04:17 AM

Hey digi01-

Sweet. Looking really nice.

Evilsizer · 12th November 2004, 04:48 AM

that is nice looking! where did you score that chassis btw?

digi01 · 12th November 2004, 06:49 AM

I buy it from a elec-shop in BEIJING.

29th October 2004, 05:02 PM	#21
markp diyAudio Member Join Date: Oct 2003 Location: L.A., CA	Actually it is on the order of 4 times the power, not twice. A bridged amp produces twice the voltage which means 4 times the power but the load each amp sees is half the impedence so use 8 ohm speakers not lower or the amp will think its driving a sub-4ohm load. __________________ If it sounds good... it is good!

29th October 2004, 06:23 PM	#22
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Thanks Mark- And hopefully he is using multiple chips per "phase or side". __________________ Troy Thinking positive doesn't make things better, it makes you a better person.

10th November 2004, 12:30 PM	#23
Evilsizer diyAudio Member Join Date: Nov 2004 Location: Texas	so if i wanted to use a 4ohm load would i need to use another 2amps bridged the same way then parralle them? __________________ "I Love To Camp!" "Comensing Shock Therapy!"

10th November 2004, 02:15 PM	#24
ble0t diyAudio Member Join Date: May 2004 Location: Milwaukee, WI	Pretty much....you'd need a parallel-bridged configuration...there are a bunch of posts concerning in here in the 'Chips Amps' section __________________ gravity always wins

11th November 2004, 05:12 AM	#25
cdoggy81 diyAudio Member Join Date: Feb 2004 Location: Gainesville, FL	Looks good! Let us know how it is all working __________________ It's better to have loved & lost than to never have had a good pair of speakers at all.......


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12th November 2004, 04:17 AM	#28
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Hey digi01- Sweet. Looking really nice. __________________ Troy Thinking positive doesn't make things better, it makes you a better person.

12th November 2004, 04:48 AM	#29
Evilsizer diyAudio Member Join Date: Nov 2004 Location: Texas	that is nice looking! where did you score that chassis btw? __________________ "I Love To Camp!" "Comensing Shock Therapy!"

12th November 2004, 06:49 AM	#30
digi01 diyAudio Member Join Date: Mar 2003 Location: BEIJING	I buy it from a elec-shop in BEIJING. __________________ 2010 DIY ALBUM UPDATED UCPv1(preamp) & DUAL(power supply)

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