Mic, Line, EQ... Preamps

[apexaudio]

APEX do you have a 2 band tone control made with transistors instead of opamps?

you posted a tone control circuit a long time ago with a tl074 quad operational amplifier).its working good.i attach a photo of it. do you have the same circuit with pcb but with 2 opamps? i have 2 opa2134 (dual operational amplifiers) and i want to use them.

I must check in my old projects, and I will share if I find some interesting schematics.
Regards

 

[smartx21]

Gradiente P-II

Excuse me, let me share schematics for the one I have at home.
Regards,
Max.

 

[apexaudio]

Excuse me, let me share schematics for the one I have at home.
Regards,
Max.

Thank's, do you have pcb layout?
Regards

 

[smartx21]

Well, I started trying to clone the original one, but I did not end this job!

 

[maouna]

thanks apex. if you find something post it.i am looking forward to see it.

 

[mathez]

hi mile,i have finished 100W Guitar Amp pcb,.wahat instead of 2n5638?
can I use this amp for bass guitar,thanks.

 

[sudhir kumar]

apex

12dB/oct activ X-over with balanced input and outputs for subwoofer (LO),satelite(HI) or full-range(FR). X-over adjust 50-250Hz, and level for satelite (HI).

hi apex,
i want to use this circuit but a little bit confused.Is it a 3 way xo or 2 way ?

 

[apexaudio]

hi mile,i have finished 100W Guitar Amp pcb,.wahat instead of 2n5638?
can I use this amp for bass guitar,thanks.

This is FET for mute amp when power amp on/off, you can use any similar FET or use amp without this mute circuit (without FET).
Yes this amp is for bass guitar.
Regards

 

[apexaudio]

hi apex,
i want to use this circuit but a little bit confused.Is it a 3 way xo or 2 way ?

This is 2 way x-over, but have 3 outputs: hi, low and full range.

 

[smartx21]

Mute

Hi,
Are you sure those 1N4007 are connected to the right place?
Shouldn't they be attached BEFORE the bridge?
Sorry, I didn't test this circuit, but I am trying to understand its behavior.
Thanks.
Max.

 

[apexaudio]

Hi,
Are you sure those 1N4007 are connected to the right place?
Shouldn't they be attached BEFORE the bridge?
Sorry, I didn't test this circuit, but I am trying to understand its behavior.
Thanks.
Max.

You have right 1N4007 must be connect to AC before bridge.
Thanks

 

[maouna]

Hey Apex, did you find any 2 band tone control design with 2 dual opamps?

 

[smartx21]

Right above there is a 3-band one...

 

[maouna]

yes i saw it but i just need a 2 band tone control.

 

[andrewlebon]

hi apexaudio
greetings can you tell which amplifier to use for active croOssover
1TREBLE 8 TO 18KHZ
2 MID 750 TO 8KHZ
3 LOW FREQENCY 150 TO 750 HZ
4 SUB FRE 40 TO 150 KHZ 50 HZ BOOST 24DB SUB GAIN CONTROL 12 DB
5 FULL RANGE OUT ALSO
only want amplifier 100 watts for hf P AUDIO COMPRESSION UNIT 100 WATTS
have finished crossover will test it today
thanking you
andrew lebon

 

[sudhir kumar]

This is 2 way x-over, but have 3 outputs: hi, low and full range.

sir,
please suggest or post a smiple 3 way crossover circuit with pcb layout.

 

[andrewlebon]

hi apexaudio
greetings my active crossover
thanking you
andrew lebon

 

[smartx21]

Brazilian group buy

sir,
please suggest or post a smiple 3 way crossover circuit with pcb layout.

Hi,
There is a brazilian group buy running, details here Grupo de compra para PCI de crossover - [Audio List] (in portuguese).
You may also send a private message to user MITCHEL, in this forum, who is responsible for that GB.
Regards,
Max.

 

[maouna]

APEX ,are there any news from the 2 band tone control?have you find anything in your projects?

 

[andrewlebon]

HI MAOUNA
greetings check dr bora home page many 2 band tone controls
thanking you
andrew lebon