Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 31st March 2013, 12:43 PM   #741
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Dx Super A - related power on time...what happens, what to tweak

if you dislike the speaker movement while you are powering the circuit on, then watch the video.... narrative in Portuguese and English:

Dx Super A - while switchng power on - the gain network capacitor - YouTube

regards,

Carlos
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg

Last edited by destroyer X; 31st March 2013 at 12:52 PM.
  Reply With Quote
Old 31st March 2013, 04:21 PM   #742
diyAudio Member
 
Project16's Avatar
 
Join Date: Nov 2012
Default BJT matching and power supply

Hello Carlos!

Before concluding my SA DX I have a small question about the transistors of the input stage (see picture). Is it better to pair (matching) them or what is not necessary?
Then I think to use the power of DX (two mono blocks), it can go?

All 73's
Attached Images
File Type: png Revised February 2013.png (962.8 KB, 587 views)
File Type: png dx-psu-schematic.png (77.7 KB, 520 views)
  Reply With Quote
Old 31st March 2013, 07:21 PM   #743
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Yes. Dx Supply can be used

Match the upper ones only... if not matched you gonna have a little off set voltage (DC in the output).

It is normal to have from 1 to 25 milivolts off set there...so, do not worry and be happy.

Welcome to the Corporation dear Project.

http://www.youtube.com/watch?v=BqSnH8fF1vY

à bientôt

Carlos
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg

Last edited by destroyer X; 31st March 2013 at 07:24 PM.
  Reply With Quote
Old 1st April 2013, 10:32 AM   #744
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default I am suggesting other options of transistors to be used...mainly to Brazilians

because down here people loves to buy in local shops in the place to buy from the internet.....so, the most easily found transistors are derated to be included if they want to do this way.

A video gonna be made..but will take some time before i publish... in advance you can have some images.

regards,

Carlos
Attached Images
File Type: jpg 2SC3284 limites.jpg (340.3 KB, 462 views)
File Type: jpg MJ15003 limites.jpg (629.0 KB, 411 views)
File Type: jpg MJL21193 limits.jpg (592.5 KB, 364 views)
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg
  Reply With Quote
Old 1st April 2013, 10:34 AM   #745
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default TIP35C sand TIP36C are very popular here

I do think these are the ones people will use here.

Amplifier was tested (already) using these transistors....but was not a destructive testing...was made within the limits studied.

Clipped waveform to 10 percent is the worst case scenario..and we must study the sittuation under this point of view.

Please, do not worry about the AG at the transistor end part number...these are the ones i have in my simulator, but the real transistor is TIP35C.

regards,

Carlos
Attached Images
File Type: jpg TIP35C limites.jpg (572.5 KB, 77 views)
File Type: jpg TIP35C case 1.jpg (39.6 KB, 52 views)
File Type: jpg TIP35C case 2.jpg (42.6 KB, 33 views)
File Type: jpg TIP35C case 3.jpg (107.8 KB, 63 views)
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg

Last edited by destroyer X; 1st April 2013 at 10:54 AM.
  Reply With Quote
Old 2nd April 2013, 10:55 PM   #746
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Zimmer tested his layout

This layout is to provide to Brazilians..but not forbidden to ship to outside Brasil.

Video in Portuguese.... a prototype pcboard etched at home to test the layout.

placa SA - YouTube

Carlos
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg
  Reply With Quote
Old 8th April 2013, 08:32 PM   #747
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Now, as promissed, the Brazilian layout to the Dx Super A

This was made to provide to Brazilians...but, of course, you can have it ....also Zimmer will provide pcboards and kits of parts.

Search his adress in this same thread because was already published.

I do not accept orders...this is not my stuff..go to Zimmer.

Here you have all files together.... Dx Supply and Dx Super A:

https://mega.co.nz/#!5lFFQSRb!XVRt4T...uW6LFBkI6LeEGg

regards,

Carlos
Attached Images
File Type: jpg SUPER A GUIA DE MONTAGEM.jpg (223.2 KB, 192 views)
Attached Files
File Type: pdf SUPER A COBRE SILK.pdf (49.9 KB, 112 views)
File Type: pdf SUPER A COBRE TONNER.pdf (49.6 KB, 108 views)
File Type: pdf SUPER A DIMENSIONS.pdf (80.1 KB, 88 views)
File Type: pdf SUPER A ESQUEMA.pdf (25.4 KB, 105 views)
File Type: pdf SUPER A MASK SILK.pdf (60.9 KB, 94 views)
File Type: pdf SUPER A MASK TONNER.pdf (61.1 KB, 90 views)
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg
  Reply With Quote
Old 11th April 2013, 10:26 AM   #748
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default My layout designers are instructed no to change Dx logo

It is simple, and since Juan made it with the circle touching the "X" rigth down "leg"..then we gonna keep this way.

These things, names and logos, cannot change.

Carlos
Attached Images
File Type: jpg imagem.jpg (28.5 KB, 151 views)
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg
  Reply With Quote
Old 18th April 2013, 08:32 PM   #749
diyAudio Member
 
destroyer X's Avatar
 
Join Date: Feb 2004
Location: Recife - Brasil Northeast
Default Output power transistor options.... the ones can be used

the reduction of the supply voltage needed...the derated wattage considering 70 degrées celsius (worst case scenario) and simulations was made at 10 percent of distortion.... SOA was considered.

So, images will show you safe use for these transistors, not only because you will not use them at 70 degrées celsius but also because i hope you will not listen at 10 percent distortion (worst case)

Dx Super A - Power transistor Option - YouTube

regards,

Carlos
__________________
Dx Blame ST with a tube preamp. recorded with Xperia cell phone, https://www.youtube.com/watch?v=Qjs32J0gdj0; https://www.youtube.com/watch?v=nhrZ...vDnDhEpNv_XVxg
  Reply With Quote
Old 24th April 2013, 06:56 PM   #750
diyAudio Member
 
vargasmongo3435's Avatar
 
Join Date: May 2011
Location: Quebradillas, Puerto Rico
Send a message via Yahoo to vargasmongo3435
Hello guys

if you guys wandering why I lock all the videos I have or you guys don't know here is a link : Dx Super A is compromice an have to lock all my videos - YouTube

Some one from China was trying to log in into my YouTube account I change the password today I have to force myself to stay away from You Tube too much Piracy ! I rather keep at least Super A safe, I'm not going let them steal it.




explaining :

Regards
Juan
Attached Images
File Type: png Hacker.png (32.8 KB, 18 views)
File Type: png lock-icon-512.png (141.4 KB, 13 views)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dx Blame ST - Builder's thread - post pictures, reviews and comments here please. destroyer X Solid State 1670 11th April 2014 06:36 AM
Overheating on NEW DX Blame super DIYGEEK Solid State 22 28th March 2012 02:30 AM
Where is the original DX Blame ST thread? johngalt47 Solid State 5 17th March 2012 01:03 PM
Dx Blame MKII, an obvious evolution from the Dx Blame ES/ST destroyer X Solid State 4 25th September 2010 06:41 PM
Dx Blame ST, operating from 18 to 24 Volts (unloaded) - Class A destroyer X Solid State 51 15th June 2010 10:26 AM


New To Site? Need Help?

All times are GMT. The time now is 06:47 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2