BALANCED LINE DRIVER,PCB layout share - Page 2

digi01 · 29th October 2004, 03:45 AM

when I get the boards,it looks more sweet than my imagine.I will do some test with BrianGT's 3875nigc and 4780,myselfs 3886igc.

enjoys

digi

troystg · 29th October 2004, 04:47 AM

digi01-

When will they be available for order?

digi01 · 29th October 2004, 07:24 AM

rabstg,
I am doing test now.I am interested in its drive performance and commonability.
If anyone is interested,it will be available asap

soldering,

peranders · 29th October 2004, 07:27 AM

Look good!

wim · 29th October 2004, 07:51 AM

excuse my newby question, but what exactly is a balanced line driver?? Can i see it as a pre-amp?? or is it only to connect 2 mono amps (gainclones) to 1 speaker.

Can anyone explain it to me in newbylanguage?

Thanks

troystg · 29th October 2004, 12:56 PM

Hey digi01-

Out of curiousity does the BLD have a gain > 1?
Or is it EASILY adjustable?

Either way I'm still in when they are ready...

troystg · 29th October 2004, 12:59 PM

Hey wim-

Awaiting digi01's reply to my previous post before I answer your.. If it can be operated at "higher" gain than 1 you should be able to use it as the driver stage in a pre-amp..

Pre-amp to what device? Stereo, guitar, test equipment, etc.?

wim · 29th October 2004, 01:08 PM

Thanks for your reaction.

What i mean is: were do you use a balanced line driver for? What is it? What can you do with it? does it come in place of a pre-amp, or can you use it in combination with a pre-amp and a power amp?

When i know what is is for, i want to use it for audio, for gainclones (i have build several, and they sound great).

Sorry for my silly questions.

troystg · 29th October 2004, 02:24 PM

Hi wim-

Well the purpose digi01 built it for is to build a bridged gainclone.

This circuit (using the EXCELLENT drv135 chip) is taking a NON-inverting signal and splitting it evenly to send out a balanced + and - signal to drive the inputs of matching (hopefully paralleled) Gainclones.

Therefore one gainclone amplifies the positive half of the signal, and the other Gainclone amplifies the negative half of the signal.

When the two halves are combined the amplifier develops "roughly" twice the voltage swing and power output.

If the gain of the drv135 can be raised above 1 then it could be used as the pre-amp in the front end of a controller or high gain amplifier.

wim · 29th October 2004, 03:20 PM

Thanks a lot Rabstq, thats the information i was waiting for!!

Now i know how to use this kind of stuff.

29th October 2004, 04:47 AM	#12
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	digi01- When will they be available for order? __________________ Troy Thinking positive doesn't make things better, it makes you a better person.

29th October 2004, 07:27 AM	#14
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Look good! __________________ /Per-Anders (my first name) or P-A as my friends call me

29th October 2004, 07:51 AM	#15
wim diyAudio Member Join Date: Sep 2003 Location: Nootdorp, Netherlands	excuse my newby question, but what exactly is a balanced line driver?? Can i see it as a pre-amp?? or is it only to connect 2 mono amps (gainclones) to 1 speaker. Can anyone explain it to me in newbylanguage? Thanks __________________ Als er "X" artikelen benodigd zijn, blijken er "X" - 1 in voorraad te zijn.

29th October 2004, 12:56 PM	#16
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Hey digi01- Out of curiousity does the BLD have a gain > 1? Or is it EASILY adjustable? Either way I'm still in when they are ready... __________________ Troy Thinking positive doesn't make things better, it makes you a better person.

29th October 2004, 12:59 PM	#17
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Hey wim- Awaiting digi01's reply to my previous post before I answer your.. If it can be operated at "higher" gain than 1 you should be able to use it as the driver stage in a pre-amp.. Pre-amp to what device? Stereo, guitar, test equipment, etc.? __________________ Troy Thinking positive doesn't make things better, it makes you a better person.


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29th October 2004, 01:08 PM	#18
wim diyAudio Member Join Date: Sep 2003 Location: Nootdorp, Netherlands	Thanks for your reaction. What i mean is: were do you use a balanced line driver for? What is it? What can you do with it? does it come in place of a pre-amp, or can you use it in combination with a pre-amp and a power amp? When i know what is is for, i want to use it for audio, for gainclones (i have build several, and they sound great). Sorry for my silly questions. __________________ Als er "X" artikelen benodigd zijn, blijken er "X" - 1 in voorraad te zijn.

29th October 2004, 02:24 PM	#19
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Hi wim- Well the purpose digi01 built it for is to build a bridged gainclone. This circuit (using the EXCELLENT drv135 chip) is taking a NON-inverting signal and splitting it evenly to send out a balanced + and - signal to drive the inputs of matching (hopefully paralleled) Gainclones. Therefore one gainclone amplifies the positive half of the signal, and the other Gainclone amplifies the negative half of the signal. When the two halves are combined the amplifier develops "roughly" twice the voltage swing and power output. If the gain of the drv135 can be raised above 1 then it could be used as the pre-amp in the front end of a controller or high gain amplifier. __________________ Troy Thinking positive doesn't make things better, it makes you a better person.

29th October 2004, 03:20 PM	#20
wim diyAudio Member Join Date: Sep 2003 Location: Nootdorp, Netherlands	Thanks a lot Rabstq, thats the information i was waiting for!! Now i know how to use this kind of stuff. __________________ Als er "X" artikelen benodigd zijn, blijken er "X" - 1 in voorraad te zijn.

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