Mic, Line, EQ... Preamps

[DAMANHURI]

Thanks Mr mile. if you want to change to guitar amplifiers, what components should be replaced.
more dominant bass amplifier low frequency, please enlightenment .thanks

 

[DAMANHURI]

if potensio replaced with a 50k stereo, what happened?
in my country is very difficult to find potensio 10k stereo.
whether there are components of the change?

 

[bombom]

Hi, Mr.APEX how can i make line out in your Guitar Amp to be fully balanced, because i want to send it to FOH Mixer with snake cable? do you have some DI BOX schematic?
Thanks before!

 

[Qmara]

hi apexaudio
greetings my active crossover
thanking you
andrew lebon

hi andrew,

http://www.diyaudio.com/forums/atta...0d1289804484-mic-line-eq-preamps-p1010242.jpg

is this stereo X-Over ?

how about the low, mid and high frequency, i mean the sound qual
ity ?

 

[Hosam]

Dear Mile regards to post #102 for components what I should use for 0u22, 0u10 and 10u what volt rate do you prefer for it if I use input from LM3886 preamp?
sorry if it silly question but as you know I'm not pro yet.

 

[apexaudio]

Dear Mile regards to post #102 for components what I should use for 0u22, 0u10 and 10u what volt rate do you prefer for it if I use input from LM3886 preamp?
sorry if it silly question but as you know I'm not pro yet.

Use 0u22, 0u1 and 10u for 50V or 63V, and this circuit can help.
Regards

 

[Hosam]

thx for these information I'll try to build now both x-over and LM and I'll post the result as picture as I hope when everything works.
my final project for diy AMP almost done I'll post as surprise in new post and hope everyone give me opinion or notes to improve it after everything is finish.

 

[peterjohn0000]

I can't find file with schematics, maybe this can help you.
Regards

Sir what is the size of the board of this stereo tone control circuit!!

 

[apexaudio]

Sir what is the size of the board of this stereo tone control circuit!!

Stereo Preamp with Tone Control PCB size 72,5X45mm

 

[DAMANHURI]

Stereo tone control with 2x10k

can i use 50k and change values of other parts?

 

[DAMANHURI]

can i use 50k and change values of other parts?

IF I'M CHANGING THE VALUE OF BEING POTENSIO 2X50K, RESISTOR WHAT NEEDS TO BE CHANGED?

 

[wattaniya]

ANYBODY TRIED THIS PREAMP.
PLS TRANSLATE THE PCB IN ENGLISH

 

[DAMANHURI]

ANYBODY TRIED THIS PREAMP.
PLS TRANSLATE THE PCB IN ENGLISH

I think this preamp Microphone, whether it be in a for a pre-amplifier for guitar?

 

[RSK]

Guitar amp

Is anybody interesting about 100w guitar amp?

Hi Miles,
Just found your guitar amp.
Can you please post the pcb in PDF file and Mirror image?
I use hot iron toner transfer for pcb.

Thanks.

 

[Fogonazo]

ANYBODY TRIED THIS PREAMP.
PLS TRANSLATE THE PCB IN ENGLISH

This scheme comes from this page is a mic / line preamp.
Construya un preamplificador con entrada de micrófono, línea y ecualizador parte 3

And this is the original author´s post
Preamplificador con triple tono, micro y linea mezclada.

 

[wattaniya]

ANYBODY TRIED THIS PREAMP.
PLS TRANSLATE THE PCB IN ENGLISH

what is the voltage needed for this preamp? can anybody share the power supply.

 

[Fogonazo]

what is the voltage needed for this preamp? can anybody share the power supply.

Work well with a voltage between + - 12V to + - 15V DC

This is a good chance

An externally hosted image should be here but it was not working when we last tested it.

 

[wattaniya]

Work well with a voltage between + - 12V to + - 15V DC

This is a good chance

An externally hosted image should be here but it was not working when we last tested it.

IS IT DUAL POWER SUPPLY NEEDED 12V.0.12V?

 

[Fogonazo]

IS IT DUAL POWER SUPPLY NEEDED 12V.0.12V?

Correct.
This scheme needs positive and negative power rails.
Look at the top left corner of the PCB design, there are the 3 power connections (GND, +Vcc & -Vcc)

 

[apexaudio]

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