1000W Simple PA Amplifier

[wattaniya]

hi apex sir,
can u check post 721.

 

[apexaudio]

hi apex sir,
can u check post 721.

Your amp is OK, and you can use +/-95V DC rail with 4R loads in real life.

 

[apexaudio]

Stereo VU meter

 

[wattaniya]

very nice vu meter, thank u.

 

[wattaniya]

which ba1000 version better? with bd139 bias or bd681 ?

 

[apexaudio]

which ba1000 version better? with bd139 bias or bd681 ?

BD139, and this is 12 LED level meter version.

 

[Hadighorbani]

BD139, and this is 12 LED level meter version.

Hi sir mie
please share your PCB and SHEMATIC for this vu meter
thank you

 

[wattaniya]

is it 5v dc supply for vu meter?

 

[rohin]

after watching the image of apex vu meter.i cann't wait.please share pcb files sir.i think no one can wait.

 

[rohin]

i am looking for 2years for vu meter with lm 339 or lm 324.i found only with lm 3915 and lm 3914.i saw vu meter with lm 339 in many professional mixer and they use ne 5532 op amp.thanks to apex sir.

 

[apexaudio]

is it 5v dc supply for vu meter?

Yes +5V , - connect to amp gnd and IN to amp out... pcb size 100x35mm.

 

[apexaudio]

i am looking for 2years for vu meter with lm 339 or lm 324.i found only with lm 3915 and lm 3914.i saw vu meter with lm 339 in many professional mixer and they use ne 5532 op amp.thanks to apex sir.

There is my old stereo dot VU with LM324.

 

[wiljj78]

Yes +5V , - connect to amp gnd and IN to amp out... pcb size 100x35mm.

3mm or 5mm LED??

 

[apexaudio]

3mm or 5mm LED??

5x5mm or 2,5x5mm LEDs, any can be use.

 

[Hadighorbani]

Yes +5V , - connect to amp gnd and IN to amp out... pcb size 100x35mm.

Hi
can you share shematic too?

 

[wiljj78]

5x5mm or 2,5x5mm LEDs, any can be use.

Ok, I tried to make in 5mm LED but it's very congested I can't make my PCB size in 100 X 30mm.
anyway i'll try with this one for now, Thanks.

 

[apexaudio]

Ok, I tried to make in 5mm LED but it's very congested I can't make my PCB size in 100 X 30mm.
anyway i'll try with this one for now, Thanks.

Nice work, 120x35mm is ok, my is 100x35mm but leds are too close.

 

[wiljj78]

Nice work, 120x35mm is ok, my is 100x35mm but leds are too close.

Noted, Thanks....

 

[IceTorch]

Yes +5V , - connect to amp gnd and IN to amp out... pcb size 100x35mm.

IN is connected to amp OUT? What signal strength is measured?

 

[wattaniya]

is that final red led is a clip indicator?
what is the amp out voltage for light up last red leds?