BBE - Acoustimax [schematic]
- apollomusicservice
- Resistor Ronker
Information
For now here are some guts and for few days schematic.
- rcustoms
- Resistor Ronker
Information
count on me for pcb layoutapollomusicservice wrote:For now here are some guts and for few days schematic.
- ppluis0
- Diode Debunker
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
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
- apollomusicservice
- Resistor Ronker
Information
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
I will make my own simplified circuit for 2153 chip in dip 20-pin package.Tnx
- rcustoms
- Resistor Ronker
Information
remember baja or bbe sonic maximizer is part of this new pedal,i thingapollomusicservice 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
- apollomusicservice
- Resistor Ronker
Information
This morning somebody left this schematic at my front door.
- Lani
- Solder Soldier
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
Lani
- plush
- Cap Cooler
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.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
No-named switch is a ground lift, others - pretty obvious.
- caspercody
- Resistor Ronker
I built the gain, and the freq/notch section. I did not add the treble and bass controls. But the output is so low, I have the amplifier almost turned all the way up to hear anything out of this thing.
Any thoughts on why this thing has no output?
Any thoughts on why this thing has no output?
- caspercody
- Resistor Ronker
Yes I used a bipolar power supply. But should this have at least a unity level output after the freq/notch section?
- ppluis0
- Diode Debunker
Are the dual ganged pot (R7) connected as per schematic ?caspercody wrote:Yes I used a bipolar power supply. But should this have at least a unity level output after the freq/notch section?
Both sections acts as rheostat using only two wires each and must increase/decrease in value at the same time. Perhaps one of these sections is connected bacwards...
Cheers,
Jose
- caspercody
- Resistor Ronker
I tried just the gain stage by coming off of pin 7 of IC1B and there is barely any signal. Should I be getting a boosted signal at least from this stage?