Mic, Line, EQ... Preamps

[DAMANHURI]

Sir NIX.
Do you have a schematic for a good Vocal effect.
its delay time can be longer.

 

[nix]

Sir NIX.
Do you have a schematic for a good Vocal effect.
its delay time can be longer.

do you mean mic with echo, delay and intensity? no, i dont have but maybe sir apex can provide us..

regards
nix

 

[QQ12e5k1]

BJT Pre Amp

Is this correct Sir?

Regards

 

[zeraphine]

PCB Layout

Is this correct Sir?

Regards

Hey buddy care to share the Layout of this for toner transferring, Also wheres the original schematic for this preamp, never seen this APEX preamp before, I might have missed it. thank you 🙂

 

[apexaudio]

Is this correct Sir?

Regards

1k resistors are wrong connect...
Regards

 

[wattaniya]

hello apex sir after long time.
can u share this stereo tone control in pdf format.

 

[ariyanto]

Is there a special supply mr mile to make this?

 

[apexaudio]

Is there a special supply mr mile to make this?

Go to post #220
Regards

 

[RSK]

Guitar amp

Hi Miles,
In post #237 I have question.
Sent you email that the amp is completed but have some problem.

Please can you help me trouble shoot what I should do?
Can I send PM to you for solving it?

Thanks,
Raj

 

[ariyanto]

Go to post #220
Regards

thank you very much mr mile? greetings
good luck always?🙂🙂

 

[apexaudio]

Miles,
I managed to put together the board for your 100W guitar amp.
Well almost completion.
Please advice, 2SK246 can be used insted 2N5638?

Thank you.......Raj

Use J309, J310... 2SK246 different pins, amp can work without 'mute' fet,
Regards

 

[RSK]

Use J309, J310... 2SK246 different pins, amp can work without 'mute' fet,
Regards

Miles,
I have already tried using 2SK246(pins rotated). Firing up there is no mute on or off.
I still hear thumb. I have taken off the FET.
Now the amp itself works but signal input at preamp side, I have no gain. With volume at full opened, I hear very low noise.

Therefore connected to amp input with 50K pot at C14, the amp works good.
Very good bass.
Please tell me what to check at the preamp side.

Raj

 

[apexaudio]

Miles,
I have already tried using 2SK246(pins rotated). Firing up there is no mute on or off.
I still hear thumb. I have taken off the FET.
Now the amp itself works but signal input at preamp side, I have no gain. With volume at full opened, I hear very low noise.

Therefore connected to amp input with 50K pot at C14, the amp works good.
Very good bass.
Please tell me what to check at the preamp side.

Raj

Can you post pictures?
Regards

 

[QQ12e5k1]

BJT Pre AMp

Is this correct sir???
Can i use this for AX14 or LM3886??
What the minimum voltage for this pre amp?

Regards

 

[apexaudio]

Is this correct sir???
Can i use this for AX14 or LM3886??
What the minimum voltage for this pre amp?

Regards

Connect from base of outputs BC550 to colector of inputs BC560 missing !
You can use this preamp with any amp.
Preamp can work with +/-12V minimum with 18k instead 33k, but use +/-24V.
Regards

 

[RSK]

Can you post pictures?
Regards

Miles,
Pic attached.

1)For now I am playing direct input to amp via 50K pot, at C14. Good bass.
Please tell me if any changes needed as above. Is 50K pot or 10K.
What is the bias for each transistors (40mA?)

2) As for the preamp part, hope can be solved.

Raj

 

[vorezky04]

schematic

Mr. Mile, can i get a schematic/ layour for good tone control subwoofer / x over / good active low pass filter for my H900 and my speaker??

Please.
Thank you for your schematic H900. I feel good for your make power amp.

 

[vorezky04]

Connect from base of outputs BC550 to colector of inputs BC560 missing !
You can use this preamp with any amp.
Preamp can work with +/-12V minimum with 18k instead 33k, but use +/-24V.
Regards

Mr. mile, Can I get a schematic/ layout for your tone control subwoofer/ x over / good active low pass and high pass filter for my Power amp H900 and my speaker???
PLease.

Thanx you for your schematic H900. It's very very great...
I love apex...

 

[QQ12e5k1]

Connect from base of outputs BC550 to colector of inputs BC560 missing !
You can use this preamp with any amp.
Preamp can work with +/-12V minimum with 18k instead 33k, but use +/-24V.
Regards

Is this correct now??

Regards

 

[apexaudio]

Mr. mile, Can I get a schematic/ layout for your tone control subwoofer/ x over / good active low pass and high pass filter for my Power amp H900 and my speaker???
PLease.

Thanx you for your schematic H900. It's very very great...
I love apex...

Posts #102 and #104,
Regards