QUASI Amplifier for Beginners

[electra_ina]

I have alot of 2N3773 (it's 2nd). Thanks APEX..i will built it...

 

[bobodioulasso]

That will increase crosover distortion

Of course, adding the baxandall diode implies adding a third diode into the biasing strip.

 

[apexaudio]

Of course, adding the baxandall diode implies adding a third diode into the biasing strip.

Many improvments can be done on this amp, but I want keep basic schematics, work great like old Dynacord. Many amplifier based on this schematics was made latter.

 

[apexaudio]

PCB size: 110x105mm

 

[bobodioulasso]

You are a real diyer's gold mine.

 

[eesbiboi]

2sc2922

apex
sir, can i used 4 pairs of 2sc2922 instead of 4pairs of 2n3773???...tnx...

 

[apexaudio]

apex
sir, can i used 4 pairs of 2sc2922 instead of 4pairs of 2n3773???...tnx...

Yes, 2SC2922 is better than 2N3773,
Regards

 

[mane]

hi apex, can i use TIP's?

 

[apexaudio]

hi apex, can i use TIP's?

TIP35C can be used with +/-45V DC rail voltage or
TIP3055 with +/-35V DC rail voltage, two pairs is enough,
Regards

 

[eesbiboi]

Yes, 2SC2922 is better than 2N3773,
Regards

how much power can i get with these pairs in full supply...say +-65dc???...
tnxxx...

 

[apexaudio]

how much power can i get with these pairs in full supply...say +-65dc???...
tnxxx...

550W on 4R load is maximum power from this amplifier.

 

[eesbiboi]

550W on 4R load is maximum power from this amplifier.

whoa!!!...this amp really is powerfull for begginers!!!...

 

[apexaudio]

whoa!!!...this amp really is powerfull for begginers!!!...

Powerfull but simple, for me amp is amp no metter how powerfull it is.

 

[teslar]

Hi apexaudio
550 watts use for mid-high pa line array no proplam ?

 

[apexaudio]

Hi apexaudio
550 watts use for mid-high pa line array no proplam ?

Useing with protection circuit, no problem, if you like how it sound. You can try it with single pair outputs, it's simple, have a fun.

 

[apexaudio]

You are a real diyer's gold mine.

Thanks, be welcome if my expirience is usefull for you,
Regards

 

[stoN_Cold]

MI

550 W with + /- 65 V dc

Regards zeoN_Rider

 

[FLT]

For single pair 2N3773 use +/-40V DC rail voltage.

O.K.
I will start with 2 2N3773(old "RCA" labeld types). First i have to find the right transformer in my basement.

regards

frank

 

[apexaudio]

550 W with + /- 65 V dc

Regards zeoN_Rider

550W is maximum power for this circuit, not with +/-65V.
With +/-65V DC output power will be about 250W on 4R load.
Regards

 

[apexaudio]

O.K.
I will start with 2 2N3773(old "RCA" labeld types). First i have to find the right transformer in my basement.

regards

frank

Old 'RCA' is very valuable parts,
Regards