100W Ultimate Fidelity Amplifier - Page 112

AndrewT · 10th January 2012, 08:45 AM

+-40Vdc into 8ohms speakers for domestic use, not party levels, is probably going to be OK with 1pr of output devices.

apexaudio · 10th January 2012, 09:12 AM

Quote:

Originally Posted by opor

Hi,
Can 2SC5200+2SA1943 be replaced with TIP3055+TIP2955 ? I just want to build AXs in light version (low cost output) .Power rail is not exceed +-40 VDC.

Use TIP35C/36C or BD249C/250C, with TIP2955/3055 use +/-30 VDC.

AndrewT · 10th January 2012, 10:08 AM

into what speaker load and for what duty?

apexaudio · 10th January 2012, 11:10 AM

Quote:

Originally Posted by opor

or TIP35+TIP36

or BD911+BD912 and similar TO220 for 'low cost output'

leonatax · 10th January 2012, 05:51 PM

apex i can not find ferit coil 15mm size for speaker teriinal do i need it or i can use only 16 turns of wire

apexaudio · 06:01 PM

Quote:

Originally Posted by leonatax

apex i can not find ferit coil 15mm size for speaker teriinal do i need it or i can use only 16 turns of wire

Use only 16 turns of wire, you don't need ferit coil, it's air coil inductor.

apexaudio · 10th January 2012, 07:02 PM

Quote:

Originally Posted by AndrewT

into what speaker load and for what duty?

Into 4ohms or 8ohms speakers for domestic use.

apexaudio · 10th January 2012, 10:45 PM

Quote:

Originally Posted by leonatax

apex i can not find ferit coil 15mm size for speaker teriinal do i need it or i can use only 16 turns of wire

I suggest to use this circuit for turn on/off mute if you use speaker terminal with triac dc protect.

leonatax · 11th January 2012, 03:16 PM

thanks

QQ12e5k1 · 15th January 2012, 11:43 AM

Quote:

Originally Posted by presbel

Hi QQ12e5k1,
Do you have bottom layout of your pcb? Can you share it?

Regards.

Sorry,I'm late to share it..

Regards

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10th January 2012, 08:45 AM	#1111
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	+-40Vdc into 8ohms speakers for domestic use, not party levels, is probably going to be OK with 1pr of output devices.

10th January 2012, 10:08 AM	#1113
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	into what speaker load and for what duty?

10th January 2012, 05:51 PM	#1115
leonatax diyAudio Member Join Date: Oct 2011 Location: Moldova	apex i can not find ferit coil 15mm size for speaker teriinal do i need it or i can use only 16 turns of wire

11th January 2012, 03:16 PM	#1119
leonatax diyAudio Member Join Date: Oct 2011 Location: Moldova	thanks