Mic, Line, EQ... Preamps - Page 27

apexaudio · 2nd May 2011, 08:44 AM

Quote:

Originally Posted by QQ12e5k1

Is this correct now??

Regards

It's correct,
Regards

zeraphine · 2nd May 2011, 06:08 PM

hello Mr. Miles, I cant seem to find the schematic or the PCB layout of the APEX BJT Preamp QQ12e5k1 talking about, care to share it here, thanks!!

QQ12e5k1 · 6th May 2011, 03:20 PM

Quote:

Originally Posted by apexaudio

PSU for preamps and active x-overs, with different zener output voltage can be +/-12V, +/-18V...

Any substitution for BF245 Sir??

Regards

vorezky04 · 6th May 2011, 04:40 PM

Quote:

Originally Posted by apexaudio

It's correct,
Regards

Mr. Mile, can you mirror your layout ML3???
Because I make layout PCB with metode iron..

apexaudio · 6th May 2011, 10:29 PM

Quote:

Originally Posted by QQ12e5k1

Any substitution for BF245 Sir??

Regards

Use 2SK246, 2SK49...

rifky · 7th May 2011, 02:44 AM

all of tone control of you, mr. mile
what is favorite your tone control?

i make ultimate AX14. witch one compatible is it??

RSK · 8th May 2011, 09:28 AM

Hello Mile,
Been waiting for so long.
Can You Help Me On Your Guitar Amp???

RAJ

apexaudio · 8th May 2011, 09:49 PM

Quote:

Originally Posted by RSK

Hello Mile,
Been waiting for so long.
Can You Help Me On Your Guitar Amp???

RAJ

Yes, but you must do some measurement, and voltages in some points can help...

apexaudio · 8th May 2011, 09:52 PM

Quote:

Originally Posted by rifky

all of tone control of you, mr. mile
what is favorite your tone control?

i make ultimate AX14. witch one compatible is it??

From post #209

RSK · 9th May 2011, 03:47 AM

Quote:

Originally Posted by apexaudio

Yes, but you must do some measurement, and voltages in some points can help...

The amp is working. I connect a 10K pot input at C14. But the amp is not powerfull. Please tell me what to change for the gain.
And also please tell me how to include clipping indicator.

The preamp I do not want to use yet. I do not want to trouble you further.

Thank you

8th May 2011, 09:28 AM	#267
RSK diyAudio Member Join Date: Nov 2004 Location: K.L.	GUITAR AMP Hello Mile, Been waiting for so long. Can You Help Me On Your Guitar Amp??? RAJ

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2nd May 2011, 06:08 PM	#262
zeraphine diyAudio Member Join Date: Jan 2010	hello Mr. Miles, I cant seem to find the schematic or the PCB layout of the APEX BJT Preamp QQ12e5k1 talking about, care to share it here, thanks!!

7th May 2011, 02:44 AM	#266
rifky diyAudio Member Join Date: Jan 2011	all of tone control of you, mr. mile what is favorite your tone control? i make ultimate AX14. witch one compatible is it??