Valveaudio

[lumanauw]

Any opamp based will work Inverting, non-inverting, you can use all of them. Chipamps forum has alot of them.

 

[mastero]

I know that .. TL074 is also an opamp... but the problem is how to obtain 10x gain .. cant find one design with gain the pin 2 is connected directly to output .. not like your design where there is 10k and ground also.

Your design is based on TL074 i just want to increase the gain as the PCB is already fitted on the heatsink

Any idea over here ..?

Mastero

 

[lumanauw]

I mean you make another preamp, outside this power amp's pcb. Take the +/-15 supply from the power amp's supply, but make additional amp to add gain.

 

[mastero]

Understood that part .. but need to find a cct for 10x gain

Cant find it

One sec you want me to build an amp to power the power amp ?

Mastero

 

[kasiss]

web

Hi, lumanauw!

When you plan to update your website?

 

[lumanauw]

This system is powered by Valveaudio

 

[lumanauw]

Uses 3pcs of Valveaudio. Because the length (72cm), the 3 amps have to be stacked. The third one is on the bottom.

 

[lumanauw]

This one has woofer on dashboard

 

[lumanauw]

2pcs of Valveaudio

 

[lumanauw]

Full tube car amplifier, made in Bandung, by my friend :

-Input 12Vdc, stationary 8 Ampere
-4 channel, 12Watt each
-Final tube 6K6 (8pcs)
-Driver tube 12AX7 (4pcs)
-Display VU EM81 (2pcs)
-Dimension 31cmx61cmx16cm

 

[lumanauw]

Quite big dimension, CD for comparison

 

[lumanauw]

Green VU tube

 

[Tolik]

Dear lumanauw,
Whitch of your projects that listed at Valveaudio.com you can to suggest for me ? I`m listening rock & modern musik, so I looking for 100 - 300W per channel, high quality car amp, better multichannel - 4...6 ch.

 

[idro]

hello Kang David.
I hope you will post a 1x500 watt mono amplifier that you've made ​​here, in protel format ... I want to make it for his own use, I thank you all if you do that .. sorry with my english