Ironamp Video Posted

[DIYspaceW]

Yes, what ZM says.

Also, here's a little update: I just got my top panels and custom parts from Edcor. So, I'm working on the final assembly as we speak. Then to make a video, which takes time. 🙂

Nice! looking forward to see the working amp on video...

 

[Soundhappy]

Yes, what ZM says.

Also, here's a little update: I just got my top panels and custom parts from Edcor. So, I'm working on the final assembly as we speak. Then to make a video, which takes time. 🙂

Thanks Mr Rothacher for news.
What Edcor parts is something " special " to be named custom ?
Have a nice day !

🙂

 

[Tom V]

I'm looking forward to this!!

 

[dimkasta]

Very nice video.

If you are taking notes for part two, I would love to see some 4ohm love since we are using an output trafo.

I had a look at the Hammond line since it would be easier for me to get, but they seem to be designed for tubes. Higher primary impedance, lower currents and weird pinouts, and I was lost.
You think we can make it work with something like that? Tube oriented trafos should be much easier to source. Or the line is getting very steep?

http://www.hammondmfg.com/pdf/EDB1650NA.pdf

 

[Tom V]

I really want to build this! Will RCA outputs from an iPhone be a good way to drive it?

 

[DIYspaceW]

I really want to build this! Will RCA outputs from an iPhone be a good way to drive it?

😱I doubt that! 🙂

 

[Tom V]

>I doubt that!

A specific reason? Not enough gain? Wrong output impedance?

 

[DIYspaceW]

First of all 1V RMS output its way too low for direct driving the SIT.
The output impenace is ok.
Most important for me is the sound quality, I doubt its any good. I have
an ipod who served me once for testing as a source and it sounded ok,
but way toooo bad...But we all have diferent tastes, so if you dont want to build
or buy a good source (dac,cd player, else...) it can be as a substitute but you will need an pre amp (20x gain or more) whit low output impedance to be able to drive a SIT like this. Just my 2 cents...🙂

 

[Tom V]

I use my iPhone to drive my Topping T-amp and Fostex Metronomes (uncompressed AAC captured from CD's) and it sounds pretty good to me.

Thanks for the input, I guess I will need a pre-amp.

 

[Zen Mod]

VBLOG #1: Curve Tracer, Big VFET, SIT Modelling, Ironamp - YouTube



I'm , besides being even more ignorant then usual , simply jealous

 

[Soundhappy]

VBLOG #1: Curve Tracer, Big VFET, SIT Modelling, Ironamp - YouTube



I'm , besides being even more ignorant then usual , simply jealous

Impressed by mr Rothacher quality of teacher.
Very instructive blog woow this other SIT's are big sized one.
Very beauty diy Ironamp is a source of inspiration in build .
Carefully finished in all aspects.
Look classy wooden frame with transformers on the top. Elegant too
Delightful thanks Mike for made this video and Zen Mod for share

Kindly regards

Christophe 🙂

 

[DIYspaceW]

Where did you get the Tokin 2sk180?
I found a Japan source for 50EUR /pcs, cant confirm if they are genuine,
has someone a reliable source?

 

[jama]

Hello DIYspaceW. I have four pieces and I buyed from ebay source. There is not a lot sources, only a few. But they are very old stock and are a little oxidized, but electricaly are good. I check the four mine and are OK.

 

[DIYspaceW]

Hi Jama,
can you tell me the source, I cant find anything on ebay!
Thanks.

 

[Soundhappy]

Ironamp with Tokin SIT's ?

Can this transistors be adapted to Ironamp topology ?

I have find 100% genuine supply of 2SK182ES version of SIT 's in Japan.

He send me all datasheet of device but is not pdf i be try send if possible or You can ask him directly.
Anyway this is e-mail i have received from Sibatech .Inc

Best regards 🙂

" Many thanks for your inquiry on Maxonic/ SIT to our website.

Although "2SK77B" is not available from Maxonic, "2SK-182ES" SIT is
possible instead by \19,500/piece (Plus shipping cost) (Left side round
shaped device on attached photo)

Thank you very much again for your kind attention in advance and we look
forward to your kind response, soon.

Yours Sincerely
Hiroshi Ishihara

Director
Sibatech,Inc.
No.1301,8-25-22
Higashisuna, Koto-ku,Tokyo
Japan 136-0074
TEL:813-3645-1646
FAX:813-3645-1948
E-mail: <hishihara@sibatech.co.jp>
URL:Sibatech, inc. High-quality Audio Equipment from Japan "

-----------------------------------------------------------------------

 

[Soundhappy]

Can this transistors be adapted to Ironamp topology ?

Oops my english ! 😀
Can this Ironamp topology be adapted to Tokin sit's ?
This is more logic 🙄
Greetings

 

[Zen Mod]

just matter of biasing voltage amount

and Iq

and Ub

and Zload



in short - yes

 

[Soundhappy]

Tokin 2SK182 ES datasheet 🙂

 

[Zen Mod]

ook

it seems nice one , with proper drive

 

[Soundhappy]

Be careful old Sanken's can be transformed toTokin SIT 's