Winetree

Re: MA1 GERMANIUM mic pre support thread
« Reply #220 on: March 24, 2016, 03:27:40 PM »
I find difficult to read the color codes
Get yourself a good meter and measure the values.
You should have one if your doing DIY builds.
It saves time and making mistakes.


ppa

Re: MA1 GERMANIUM mic pre support thread
« Reply #221 on: March 24, 2016, 03:36:15 PM »
Hi all, i am finally putting this kit together... i got the kit with all resistors etc... and i am wondering on some values... For example R6 should be 27ohm which should give me red-purple-black-gold-brown but the resistor i have is red-purple-yellow-gold-brown which is 27,4 ohm... Or am i missing something?

Same thing goes to the 10Mohm one. My resistor is brown-brown-black-green-brown thats 11Mohm...

I am new to figuring out colours and values but somehow this feels already odd... Could anyone show me some light?

Thanks :)

Manu

Hi Manu,

these resistors don't need to be very precise, I have designed the MA1 with high tollerance components, so it can accept Res with tollerance of 10% just to permit to use also NOS carbon resistors if the diyers want using them. But it should not be a surprise since I have designed the MA1 with old and modern design. On the past using 10% res was normal.
For example for R6, 27 ohm is only a value, if the res is a 33 ohm it runs the same. 


Pier Paolo   

manulaudic

Re: MA1 GERMANIUM mic pre support thread
« Reply #222 on: March 24, 2016, 08:14:25 PM »
alright !
thanks very much for your help.I'll keep on doing it :)
So i can use the resistors you've provided for example 11kohm instead or 10kohm? should ne fine?

winetree, i'm going to start measuring from now on:)
Manu

ppa

Re: MA1 GERMANIUM mic pre support thread
« Reply #223 on: March 25, 2016, 09:06:47 AM »
all resistors included on the kits are nearest to the design values since I have had the possibility to order them with large stocks  8),
I have written on the BOM the E12 classic values to make easy to find them and since in any case MA1 can accept res with 10% of tollerance   ;)
« Last Edit: March 25, 2016, 09:09:50 AM by ppa »

ppa

Re: MA1 GERMANIUM mic pre support thread
« Reply #224 on: March 25, 2016, 09:11:33 AM »
so yes, you should  use all res on the kits  :)

Re: MA1 GERMANIUM mic pre support thread
« Reply #225 on: August 13, 2016, 11:11:52 AM »
Just built a pair of these. Great kits(!!!!), quick and easy to put together, and they sound absolutely fantastic!

Instead of replacing the DI with a fader or attanuator I just lower the input on the compressor inline and get access to the fat harmonics when pusing the germanium transistor hard. Built with EA in and out(litz) transformers from capi-gear. Like someone else mentioned in this thread before, the EA input is great for adding harmonics to the lower freq making it really suitable on bass heavy sources. I don't want to part with the DI because it's so cool on bass guitar. Actually for a thick, full el-guitar sound as well 8) So far haven't had time to try them on anything else. Just wanted to let everybody know how cool these pre's are. Absolutely recommended! Thanks Pier  :)

TillM

Re: MA1 GERMANIUM mic pre support thread
« Reply #226 on: January 21, 2017, 10:16:43 AM »
Hey ferrochrome,
Looks great, also the other pres in your lunchbox.
Which resistors do you change to get lower output ?
I want to use the MA1 for my drums.
I can't wait till they get back in stock.

manulaudic

Re: MA1 GERMANIUM mic pre support thread
« Reply #227 on: October 26, 2019, 08:23:12 AM »
Hi ! i lost the BOM could anyone send it to me?
Thanks
Manu

ppa

Re: MA1 GERMANIUM mic pre support thread
« Reply #228 on: October 26, 2019, 07:12:02 PM »
Hi ! i lost the BOM could anyone send it to me?
Thanks
Manu

All docs sent by email.
thanks for contacting and posting.
Best regards
Pier Paolo

manulaudic

Re: MA1 GERMANIUM mic pre support thread
« Reply #229 on: October 30, 2019, 01:43:59 PM »
I finally finished this unit, I purchased it in 2013 and forgot about it for so many years.
Pier Paolo helped me get through every issue I had and he build was a pleasure to do !

It sounds fantastic, not as beefy as my neveish pre but it has some real nice warm harmonics that definitely fit well with tracking vocals for my use.

I recommend it !

M


Sorr

Re: MA1 GERMANIUM mic pre support thread
« Reply #230 on: December 26, 2019, 07:00:17 PM »
Is there a schematic for this?

Re: MA1 GERMANIUM mic pre support thread
« Reply #231 on: March 03, 2020, 10:12:04 AM »
Hi Pier,

I'm going to use Haufe ST8456 and CINEMAG CMOQ-2S. Do you know what i need for C31, R21 AND R22 ?
Thanks

Julien


 

Related Topics

  Subject / Started by Replies Last post
295 Replies
78328 Views
Last post April 04, 2019, 10:38:25 PM
by Whoops
40 Replies
19463 Views
Last post March 31, 2010, 02:10:02 AM
by leadbreath
269 Replies
63239 Views
Last post October 05, 2016, 07:04:38 AM
by adamboon
5 Replies
781 Views
Last post March 20, 2020, 01:50:14 PM
by kosi