Mic, Line, EQ... Preamps

[apexaudio]

or a stereo tone control with just bass, mid and treble?

I have not pcb for stereo three way tone control, but you can do it yourself with using ML3 schematics, this tone control is advantage compare with other schematics becouse adjusting mid range have no efect to high range, it's not case with others schematics.
Regards

 

[engel dela pena]

apex,
my ml3 on her way
regards

 

[teslar]

Hi apexaudi.
Thank you for share schematic & pcb.
I use for Home entertainment.
Regards.

 

[apexaudio]

Hi apexaudi.
Thank you for share schematic & pcb.
I use for Home entertainment.
Regards.

You can add ML3 in any Hi-Fi amp on 'aux' input, and use for 'karaoke party',
Regards

 

[Boss_Ronald]

Hi engel,

Little interested with your pcb on the crt monitor. How could i transfer image from paper to pcb for eching? draw or is there any easy way? need help. thanks

 

[engel dela pena]

Hi engel,

Little interested with your pcb on the crt monitor. How could i transfer image from paper to pcb for eching? draw or is there any easy way? need help. thanks

i just paste it,maskin tape at the bottom
pinted design over it

 

[eesbiboi]

In this thread I will post preamps, EQ, active x-overs, VU...
Regards

sir...
do you have an audio distributor???...would it be okey for you to post it here???...for ready made audio distributors are hard to find in our locality...
tnx en regards...

 

[apexaudio]

sir...
do you have an audio distributor???...would it be okey for you to post it here???...for ready made audio distributors are hard to find in our locality...
tnx en regards...

What did you mean 'audio distributor', for what purpose you need to use this circuit?
Regards

 

[eesbiboi]

What did you mean 'audio distributor', for what purpose you need to use this circuit?
Regards

a circuit that has 1 line input/2 for stereo with 2, 4,6 or more output with the same gain as the input...so i can use more amps using 1 signal input...

 

[apexaudio]

a circuit that has 1 line input/2 for stereo with 2, 4,6 or more output with the same gain as the input...so i can use more amps using 1 signal input...

Any circuit with OP amp in output stage have low output impedanse, and you can use more amps in parallel connect.
Regards

 

[eesbiboi]

Any circuit with OP amp in output stage have low output impedanse, and you can use more amps in parallel connect.
Regards

sir...,,
how do i do that???...
coz in our place, we use audio distributors to use more amps...like in discos...

 

[khalsa]

Hi apex plz help me for balanced pre amp pcb

 

[apexaudio]

Hi apex plz help me for balanced pre amp pcb

You can use this circuit with GND lift switch,
Regards

 

[apexaudio]

sir...,,
how do i do that???...
coz in our place, we use audio distributors to use more amps...like in discos...

Do you want to have balanced output circuit for each channel?

 

[eesbiboi]

Do you want to have balanced output circuit for each channel?

if it helps then i'd say yes pls...

 

[eesbiboi]

You can use this circuit with GND lift switch,
Regards

sir...
how does this crkt differ with this one???...

 

[apexaudio]

sir...
how does this crkt differ with this one???...

All PA amps have similar balanced input, and you can use any of them.
Regards

 

[khalsa]

apex Thanks

 

[engel dela pena]

apex,
distribution amp
this is the way how i understand eesiboy
in like manner,this is how many commercial mixer does, it is the sub outs
where we can assign more amp in the same or different application
sub
mid hi
monitor
this is a good question
hope to hear you soon
regards

 

[engel dela pena]

apex,
this ML3 is working
except the treble
good mid
good bass
maybe i.c.D fail
i will try to change TLO74
i will update you after
regards