MK47 PCB tube mic kit - build thread

[dandeurloo]

The Mic sounds wonderful!

Be sure to connect the shield from the cable on both ends to the PSU star ground and to the mic ground.  I had noise in some places and not in others until I did that. Thanks everyone now to finish my second one.

Oh, anyone find good wood boxes that hold Skylars bodies?

 

[david-p]

anyone find good wood boxes that hold Skylars bodies?

Hobby Lobby for around $5.

David

 

[dandeurloo]

Thanks I will go check them out!

 

[Sredna]

Hi guys,
I 'm having an issue with my mics ( all of them )
the mics can work fine for hours or days, and suddenly that nois :
https://dl.dropbox.com/u/56011166/Mic%20noise.wav
any idea of what it can be ?

Yes, sounds like bad tubes. I had this as well and had to swap a couple of times before I found a quiet pair. Let the tubes burn in at least 24 hours.
Also check for microphonics, one tube gave an audiable "ping" when I turned the mike over.

 

[zayance]

PSU Boards are IN, if interested?


T.

 

[Rob Flinn]

How much are these PSU boards ?

 

[zayance]

Answerd on PM, as i don't want th support thread to be a selling place.
These boards were ordered because some were asking for them, and the spares i have are according to what Ioaudio still sells.
I was just making a call for who could be interested "as future kit buyers" and if these can help their builds.

 

[David R.]

anyone find good wood boxes that hold Skylars bodies?

Hobby Lobby for around $5.

David

David, I have searched their site and not found it.  Can you post a link? 

Thanks,

-David R.

 

[david-p]

David:

LOL.  I went straight to it by searching on wood box:

http://shop.hobbylobby.com/store/item.aspx?ItemId=165037

Cheers,

David

 

[withnail]

Hi all - I just got Dan @ Collective Case's excellent PSU case and ordered the PCB from Tony (zayance).  Does anyone have recommendations on a PT which is suitable for both 115/230V?

 

[wave]

The Antek AN-05T200 is a good choice

http://www.antekinc.com/details.php?p=603

It works on 115/230 and has a 200V sec as well as (2) 6.3V sec (for a nice fender jewel lamp etc).

Dave

 

[withnail]

The Antek AN-05T200 is a good choice

http://www.antekinc.com/details.php?p=603

It works on 115/230 and has a 200V sec as well as (2) 6.3V sec (for a nice fender jewel lamp etc).

Dave

Thanks, Dave!

 

[jandoste]

Hey guys,
I just received my 4 tubes that I bought them on ebay but they all have 9 pins   2x EF86= 9 Pins and 2xPF86 = Pins
so what the next step?  I am missing something with these Tubes?
Thanks for any advice!
Cheers

 

[Sredna]

Wrong tubes for the MK47, they would suit the MK7 on othe other side! ;o)

For MK47 you should look fore these: http://www.ebay.de/itm/6028-408A-Philips-ECG-USA-Tube-Lot-of-10-Pcs-/380384374928?pt=UK_Sound_Vision_Valves_Vacuum_Tubes&hash=item5890acf090

 

[jandoste]

Hey Sredna,
Thanks for the link! I get 10 pcs from your link and I don't know what I will do with the "EF86" tubes
cheers

Wrong tubes for the MK47, they would suit the MK7 on othe other side! ;o)

For MK47 you should look fore these: http://www.ebay.de/itm/6028-408A-Philips-ECG-USA-Tube-Lot-of-10-Pcs-/380384374928?pt=UK_Sound_Vision_Valves_Vacuum_Tubes&hash=item5890acf090

 

[zayance]

You can get them here as well

http://www.audiophonics.fr/jan-philips-6028408a-tube-qualite-militaire-p-6168.html

 

[jandoste]

You can get them here as well

http://www.audiophonics.fr/jan-philips-6028408a-tube-qualite-militaire-p-6168.html

You are the best Zayance!
Thanks,

 

[Sredna]

... and I don't know what I will do with the "EF86" tubes

Give them to me! ;o)

Or build a MK7 or a U67 or a G7 or a REDD47 or a ......

 

[jandoste]

Hey Guys,
I finished my build but just got a small problem 
the mic sound is too low The Psu is awesome[ thanks Zayance]! I got all right voltages! maybe the tubes are bad or my wire connexion is bad?
I used this one;

Any idea?
regards

 

[Sredna]

Have you checked the voltages inside the mike?

Are both tubes working?