Dx Blame ST - Builder's thread - post pictures, reviews and comments here please.

[smartx21]

All over the world!

DX Blame amplifiers, all over the world!
YouTube - Stand By Me | Playing For Change | Song Around the World

 

[a.wayne]

I see you and raise U one :

http://www.youtube.com/watch?v=fgWF..._DwKA-bV3PQwJ5xcpVdi7B-TPk&list=ML&playnext=1

 

[destroyer X]

Orders are increasing in Brazil...we have already reached the minimum quantity

to order factory to start the Blue board's production.

regards,

Carlos

 

[chlorofille]

Excellent. What version are you building? ST or ES ?

 

[destroyer X]

Brazilians are building mainly the ES model, some of them

will modify one channel to listen and compare..then they will decide wich model they will use.

regards,

Carlos

 

[destroyer X]

Boys, we have changed our board's supplier, price was REDUCED!

Please, join our group buy because we soon will be collecting values to produce baords and ship them to you!

Follow this link please:

http://www.diyaudio.com/forums/grou...charged-groub-buy-interest-3.html#post2360363

regards,

Carlos

 

[AndrewT]

http://www.diyaudio.com/forums/soli...-mkii-supercharged-release-4.html#post2361384
Do not tarnish Rudi's reputation.
Rudi has done nothing wrong.

 

[destroyer X]

This amplifier has so nice sonics that we have always people buzzing around

some with enthusiasm, others happy with positive feelings..and we have these others too.

Build a Dx amplifier, a for free amplifier, a DIY amplifier, with schematics, layout and everything posted and uncle charlie is here, so, never fear.

regards,

Carlos

 

[destroyer X]

Give a try at least one...build a Dx amplifier and join the

Corporation from now to the ethernity.:

YouTube - Dx Blame amp & Canon A310 are a nice combination

regards,

Carlos

 

[kASD]

Got your PM

Carlos,

Lets rock n roll and come to skype

 

[supernet]

My Blame MKII pair





It sounds marvelous...


I will soon go into Supercharged edition to power up my very low sensivity ScanSpeak 2 way monitors, so if anybody interested see Trade thread

 

[supernet]

Hm...it seems my local image host provider has troubles...hope this works:

An externally hosted image should be here but it was not working when we last tested it.

 

[chlorofille]

Image can't be zoomed in now but anyway I managed to have a closer look when you first loaded the image.

Nicely built board with good components !

 

[niss_man]

Hi all

Please disregard that I said the symasym seems a bit harsher than the Blame ST. It seems as though I had wired the volume pot wrong. Unfortunately I only found out this when buying another pot for my newly produced Blame ES. When wired wrong it had a lower volume than expected(used the symasym chassis). Also at the upper end of the pot range it seemed to suddenly quiet down. I thought it was a bad pot but it was only my bad wiring. Therefore I will disregard the symasym v Blame ST due to my mistake.
So if anyone ever finds that their volume pot seems to have a lower than expected volume and decrease in vol at the end of the scale, they may have wired it incorrectly.

P.S. The Blame ST was wired correctly.

Regards

Simon

Hi all

I have finally got around to making a comparison video on u tube which is a direct side by side comparison of the differences in sound between te symasym and the blame st. The symasym uses separate 160w transformers to each channel. The blame st uses a single 300w. This was recorded using a digital camera so the quality isn't as good as I wanted, but you can still hear an audible difference between the two. Four people have listened to this side by side comparison and all four were unanimous in which amp sounded the best. Hope this helps in peoples decision in which amp they wish to make next.

Heres the link
YouTube - Symasym V Blame St Amplifiers

Regards

Simon

 

[dadod]

Blame ST + TMC

Hi Carlos,
I finished Blame-ST but with the touch. After reading about TMC by Edmond Stuart I could not but try it. "http://www.diyaudio.com/forums/solid-state/94676-bob-cordell-interview-negative-feedback-304.html"
Good start was Blame ST and here it is, Blame-ST-TMC.
Voltage is +-40V a bit more and the feedback resistance a 22k/820 same ratio but higher input resistance. PCB hand made.
The loudspeakers are hand made Seas woofer and mid/high ribon by Newform Research.
I like the sound of the combination very much.
Here is schematic and LTSpice simulation.

 

[smartx21]

Could you kindly place schematics in JPG or PDF format? Not everyone is able to open your attached files.
Thanks.

 

[dadod]

You just need LTSpice, a free simulator program, unzip the file and run it with LTSpice.
I do not have a tool to transer it in pdf or JPG or I do not know how.

 

[Mamak]

hello.i built dx blame st 1.5.my problem is when start up without play song it become very hot.if play the song more heat produce.i follow and use all recommended component in this thread.why this happen and solution to me?

 

[ostripper]

What Dadod meant was this (below1). All you do is press "print screen" , open any graphics program on PC - "paste as new image" , save as gif,jpg, etc.

Blame ST with TMC is indeed "blameless". TMC feeds X-over distortion back to miller loop , error correction takes place , almost "class A" performance. (.000045% @ 1k/50W)

Amp retains the sound quality of the bootstrapped original.The amp "sees" the same miller response with the 2 caps/1 resistor. Also , adding a cascode will in NO way affect the sound , it is not a gain stage ... just a level shifter.
Quality of 100uF bootstrap cap is VERY important for best sound , Panasonic EE .. Type A Series EE | Aluminum Electrolytic Capacitor | Passive & Electromechanical | Panasonic Industrial Solutions Global is what I use.

I run this (ST like design @ 200w /75-0-75) , flawless. This design sounds so good , I even decided to give it MPSA18 low noise inputs/cascode (below2) , the prototype of this version runs flawless as well. ALL the versions (ES, ST ,my 2 clones) have the best sound and a BIG FAT seal of approval.

As far as beating a symasym .. YES it does. Both in the numbers and in the sound (bass is smoother , no long term fatigue in extended listening).

Uncle Charlie is indeed very gracious for releasing such good sound/value upon the forum, thanks.
OS

 

[niss_man]

I agree. Non fatiguing and friendly sound. Is there much of a sound difference between the standard ST and the TMC modded version ostripper?

Regards

Niss_man