Runoffgroove - Thunderbird Preamp

rcustoms · Post by **rcustoms** » 09 Mar 2015, 14:21

Hey guys what do you think about this design by runoffgroove group?

see the original page
http://www.runoffgroove.com/thunderbird.html

rcustoms · Post by **rcustoms** » 09 Mar 2015, 22:39

ok looks awesome
do it one
schematics first rev.

rcustoms · Post by **rcustoms** » 10 Mar 2015, 13:39

i do my homework
schematics corrected

The attachment schema.jpg is no longer available

layout

The attachment ALL.jpg is no longer available

parts

I intend to add a solid stage 100 watts power amp, and hear how good it really.

rcustoms · Post by **rcustoms** » 10 Mar 2015, 14:05

sorry, pcb without jumpers

PCB.jpg

B Tremblay · Post by **B Tremblay** » 10 Mar 2015, 21:18

It's nice to see interest in our work.

However, I'm a bit confused why there is a need to redraw the schematic and share it publicly with no attribution to runoffgroove.com when a link to the project page was provided. The project page contains a link to purchase a high-quality multi-layer PCB and we provided a compact PCB layout for those builders who etch their own boards. Next, a layout with a new name for the circuit (and still no credit to runoffgroove.com) is shared.

Am I missing something here?

rcustoms · Post by **rcustoms** » 10 Mar 2015, 22:05

B Tremblay wrote:It's nice to see interest in our work.

However, I'm a bit confused why there is a need to redraw the schematic and share it publicly with no attribution to runoffgroove.com when a link to the project page was provided. The project page contains a link to purchase a high-quality multi-layer PCB and we provided a compact PCB layout for those builders who etch their own boards. Next, a layout with a new name for the circuit (and still no credit to runoffgroove.com) is shared.

Am I missing something here?

i do not pretend at anytime take your design and claim that is mine ,when i open this topic i put the real schematic from your site and with your business name but someone(moderator) i think ,erase this schem maybe for your own safety.
I really like the work done by the people at runoffgroove ,and the only way that i find to share with the fsb guys was redraw the schematic and do a pcb for use like a preamp style.maybe someone contribute to mod your design or explain your new amp emulating system.
I apologize if I have offended anyone,my only intension was to show everyone your awesome design.
sorry for my english

B Tremblay · Post by **B Tremblay** » 10 Mar 2015, 22:26

Thank you for explaining. I was hopeful that your intention was positive. Would you please add the circuit name and appropriate credit to runoffgroove.com on your images?

rcustoms · Post by **rcustoms** » 10 Mar 2015, 22:54

B Tremblay wrote:Thank you for explaining. I was hopeful that your intention was positive. Would you please add the circuit name and appropriate credit to runoffgroove.com on your images?

Here

Post by **The G** » 11 Mar 2015, 12:41

@rcustoms, you could go to User Control Panel > Manage attachments and delete the non-copyrighted images.

rcustoms · Post by **rcustoms** » 11 Mar 2015, 15:22

ggedamed wrote:@rcustoms, you could go to User Control Panel > Manage attachments and delete the non-copyrighted images.

thanks.
is done

FuzzMonkey · Post by **FuzzMonkey** » 12 Mar 2015, 03:10

Mr. Tremblay,

Purely out of interest can I ask why the 24 volt power supply instead of a +/- 12 volt dual supply with the Thunderbird?

grrrunge · Post by **grrrunge** » 12 Mar 2015, 13:22

Perhaps because you can get 24V from a cheap SMPS for laptops etc.

bajaman · Post by **bajaman** » 12 Mar 2015, 19:03

obvious really - he is designing for use from 9v dc

FuzzMonkey · Post by **FuzzMonkey** » 14 Mar 2015, 01:00

Using the LT1054 you can double both the positive and negative sides of the power supply.

bajaman · Post by **bajaman** » 14 Mar 2015, 01:29

Using the LT1054 you can double both the positive and negative sides of the power supply.

from a single 9v dc battery ?

FuzzMonkey · Post by **FuzzMonkey** » 14 Mar 2015, 02:07

bajaman wrote:
Using the LT1054 you can double both the positive and negative sides of the power supply.
from a single 9v dc battery ?

Yes. Tried and tested using the schmatic below as seen on page 11 of the LT1054 datasheet. This method also works http://goo.gl/3FGBkU. Used both with methods using Schottky diodes and voltage regulators when playing around with a Carl Martin Plexitone on the breadboard to archive the original's +12 / -12 power supply.

papasteack · Post by **papasteack** » 03 Jul 2015, 23:58

Thanks for pointing at it !!!

The dynamics effect remember me a bit the ampeg (crate) tube patent used for the ampeg vh140c in it explanation.
But ampeg's stuff is implemented inside the feedback loop, and it can raise a reallyyy heavy distortion...
Really interesting to see debucked implicitly this part of the origin of tube amp non-linear dynamic ^^

Seeing this, its really time to learn how to do simulations ^^

THANKS RUNOFFGROOVE !