BBE - Acoustimax  [schematic]

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BBE - Acoustimax

Postby apollomusicservice » 03 Aug 2013, 17:18

For now here are some guts and for few days schematic.
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Re: BBE Acoustimax guts

Postby rcustoms » 03 Aug 2013, 17:55

apollomusicservice wrote:For now here are some guts and for few days schematic.

count on me for pcb layout
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Re: BBE Acoustimax guts

Postby ppluis0 » 03 Aug 2013, 18:15

Hi apollo,

This is the link to the datasheet of the 20 pins BBE custom chip: http://pdf1.alldatasheet.com/datasheet- ... 2153D.html

Hope the diagram in page 4 of that document helps you to trace this unit.

Cheers,
Jose
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Re: BBE Acoustimax guts

Postby apollomusicservice » 03 Aug 2013, 18:36

For drawing schematics I use Eagle Cad but I did not find library for NJM2153.
I will make my own simplified circuit for 2153 chip in dip 20-pin package.Tnx
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Re: BBE Acoustimax guts

Postby rcustoms » 04 Aug 2013, 17:15

apollomusicservice wrote:For drawing schematics I use Eagle Cad but I did not find library for NJM2153.
I will make my own simplified circuit for 2153 chip in dip 20-pin package.Tnx

remember baja or bbe sonic maximizer is part of this new pedal,i thing :hmmm: :hmmm:
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Re: BBE Acoustimax guts schematic  [schematic]

Postby apollomusicservice » 07 Aug 2013, 13:32

This morning somebody left this schematic at my front door. :)
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Re: BBE - Acoustimax

Postby Lani » 30 Jul 2018, 14:22

Does anybody know whats going on with the switches on the schematic??? the pre/post switch, -12dB switch and phase switch have some strange numbering. Then there is the switch coming off the XLR jack that has no label. Any help would be greatly appreciated. Thanks in advance.

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Re: BBE - Acoustimax

Postby plush » 30 Jul 2018, 14:40

Lani wrote:Does anybody know whats going on with the switches on the schematic??? the pre/post switch, -12dB switch and phase switch have some strange numbering. Then there is the switch coming off the XLR jack that has no label. Any help would be greatly appreciated. Thanks in advance.

Lani


Even though the switches have wrong pin group labeling, their purpose is pretty clear. It becomes even clearer after you review the user manual posted on BBE website.
No-named switch is a ground lift, others - pretty obvious.

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