Bartolini - NTMB Bass Preamp  [schematic]

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Bartolini - NTMB Bass Preamp  [schematic]

Postby analogguru » 16 Dec 2008, 09:21

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There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.

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Re: Bartolini - NTMB ( degooped )

Postby xaxxop » 16 Dec 2008, 12:56

thank you very much :thumbsup
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Re: Bartolini - NTMB ( degooped )

Postby Silent Fly » 16 Dec 2008, 13:03

Thanks! :applause:
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Re: Bartolini - NTMB ( degooped )

Postby quaternotetriplet » 17 Dec 2008, 05:35

Hi, anyone got figured it out to hack it into a pedal??
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Re: Bartolini - NTMB ( degooped )

Postby Jarno » 20 Dec 2008, 18:10

Well, that's quite a bit different from what I would imagine it would look like, using inductors for the mids.
Might be an interesting build, but I'm having way too much fun with filterpreamps right now!

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Re: Bartolini - NTMB ( degooped )

Postby SPeter » 27 Dec 2008, 13:58

Great job Analogguru!
Many, many thanks! :applause:
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Re: Bartolini - NTMB ( degooped )

Postby Fernando JFET » 08 Jan 2009, 15:34

First of all, sorry about my english, i´m from argentina... Could you tell me which unit´s schematic is that?? Becuase in the picture i can see 2 "boards" beside the pots... I hope you understand me.
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Re: Bartolini - NTMB ( degooped )

Postby george giblet » 09 Jan 2009, 04:34

This 2001 circuit is either later NTMB or NTMB-918.

AFAIK, the the difference between the NTMB or NTMB-918 is some cap voltages, the docs are pretty much the same anyway.
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Re: Bartolini - NTMB ( degooped )

Postby chicago_mike » 01 Nov 2009, 01:26

I just did the layout of the modded one in eagle and will get a proto-layout tonight or tomorrow.

I am making this a 2 battery unit. Like the NTSMB-18 units. Im also going to add a switch for mid freq's.

What I dont know, is what value inductors to use. I guess I could steal from ampeg and mesa. :scratch:
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Re: Bartolini - NTMB ( degooped )

Postby SPeter » 01 Nov 2009, 04:35

Inductors are 150mH each!I've built the vero but have difficulties finding those inductors! Does anyone can direct me me to a source where to buy them! Thanks in advance!
:)
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Re: Bartolini - NTMB ( degooped )

Postby chicago_mike » 01 Nov 2009, 11:34

mouser, allied and digikey should have them.

otherwise just keep checking ebay? I havent gotten mine yet.
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Re: Bartolini - NTMB ( degooped )

Postby SPeter » 01 Nov 2009, 17:09

Thanks chicago_mike!
Cheers!
:D
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Re: Bartolini - NTMB ( degooped )

Postby chicago_mike » 01 Nov 2009, 17:49

:thumbsup
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Re: Bartolini - NTMB ( degooped )

Postby quaternotetriplet » 02 Nov 2009, 02:10

Hi, chicago_mike,

please post the layout.

thanks
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Re: Bartolini - NTMB ( degooped )

Postby chicago_mike » 02 Nov 2009, 02:45

Its pretty ugly....

you sure you want it? Its double sided right now.. maybe you can help? :)
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Re: Bartolini - NTMB ( degooped )

Postby chicago_mike » 02 Nov 2009, 02:47

pm me with an email addy and Ill send you a zip file. :)
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Re: Bartolini - NTMB ( degooped )

Postby quaternotetriplet » 02 Nov 2009, 10:03

did you made it with eagle?
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Re: Bartolini - NTMB ( degooped )

Postby chicago_mike » 02 Nov 2009, 16:28

yeah
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Re: Bartolini - NTMB ( degooped )

Postby quaternotetriplet » 03 Nov 2009, 02:59

hey mike, why there are so many schem?
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Re: Bartolini - NTMB ( degooped )

Postby chicago_mike » 03 Nov 2009, 03:11

ohh...cause Im a dork. :(

I save all little or big changes as a new schematic / board layout.

the board layout on that sucks....I have no clue as to a good layout. :(
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