I am getting 44v p2p now with the standard Burning Amp 3 gain board and rail of 48v dc, why do you say I will only get 10v ?
Please calculate operating points or do simulation to understand. The circuit has to be modified to meet output level and gain that you need, but then it may have high distortion. I do not see a good solution coming from that scheme for you.
There are ImPasse Preamplifier with ImPasse Preamplifier thread by SY and Pumpkin preamp - More Boring Making Thread by ZM that may suit your need better.
hi, I was completing the assembly of the components on the pcb of the Burning Amp BA-3 as a guide 6L6, now, I saw this thread on the balanced version, coreggetemi if I'm wrong, in case I wanted to build the version b changes to remove the resistors R5 from 100 Ohm on both channels of the BA-3 board and join them with a 200 ohm resistor? connect the positive input to a channel, the negative to the other channel, mass in common? and at the output of the 2 pcb of power one the positive speaker and the other the negative speakers? quite right ?
Attachments
well, one last question; I already have a 1000w 2x18v transformer, but it will not be enough to feed both channels, right?
it depends - how deep you want to set Iq
with 18Vac secondaries , count on 22-23Vdc after rectification and filtering ...... say that you choose 150W of heat per (balanced) channel ..... that's 300W of heat for stereo
1KW will suffice , if Donut is not ringing and buzzing
so , try it
with 18Vac secondaries , count on 22-23Vdc after rectification and filtering ...... say that you choose 150W of heat per (balanced) channel ..... that's 300W of heat for stereo
1KW will suffice , if Donut is not ringing and buzzing
so , try it
it depends - how deep you want to set Iq
with 18Vac secondaries , count on 22-23Vdc after rectification and filtering ...... say that you choose 150W of heat per (balanced) channel ..... that's 300W of heat for stereo
1KW will suffice , if Donut is not ringing and buzzing
so , try it
Thanks but it is not going to solve my problem. The output board I have is a current follower which means it will not amplify voltage, only current. I need a pre-amp that outputs 60-70v to9 drive the board well, anything smaller will not do.
I am not sure. I am making the single-ended. This is mine.
. Can you please show me where did you read about the R5?
you were given with recipe few pages back
cascode input stage of BA3 FE , raise rails voltage , and sky is the limit
cascode input stage of BA3 FE , raise rails voltage , and sky is the limit
ZM answer in post #615 is best for BA3, learn what is needed and post your new schematic here so we can help you. If you want ready made solution then your choice is really limited.
Somebody please correct if I'm mistaken, I think the Impasse can potentially output close to ~40V RMS = 113.2Vpp and the Pumpkin ~20V RMS = 56.6Vpp for a 2 V RMS input and < 1k ohm output impedance.
Thank you so much for your input. Post 6 15 doesn't have anything but if you mean post 616 the schematic, that was posted by me couple of weeks ago. I will definitely Investigate what you talking about the above.
This is what I meant.
You need to catch up on reading especially the "F5 Turbo" V3 section material to really get what ZM meant. 🙂
regarding old
, rails are +/-36V .... so , easy to imagine what output voltage envelope can be ..... well , practically as far you have cojones to go 🙂
regarding old
🙂
For now you can put a power transformer between your driver and the buffer. Enjoy your music while you come up with a complicated solution.