Mad Bean Pedals Aquaboy Deluxe Quick Start Manual

Fx type: analog delay, based on the boss dm-2

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Aquaboy Deluxe (ABDX)

2015 edition

FX TYPE: Analog Delay

Based on the Boss® DM-2™

Download the previous (2013) version of the Aquaboy documentation here:

http://www.madbeanpedals.com/projects/Aquaboy/docs/ABDX2013.zip

3.3" W x 3.2" H

Licensing: You are free to use Aquaboy Deluxe PCBs for DIY and small commercial building. You may not sell Aquaboy Deluxe PCBs on your own (selling to

fellow DIY'ers through the forums is fine, of course) or re-package them as part of a "kit".

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Summary of Contents for Mad Bean Pedals Aquaboy Deluxe

Page 1 3.3” W x 3.2” H Licensing: You are free to use Aquaboy Deluxe PCBs for DIY and small commercial building. You may not sell Aquaboy Deluxe PCBs on your own (selling to fellow DIY'ers through the forums is fine, of course) or re-package them as part of a “kit”.
Page 2 B.O.M. Resistors Resistors Caps Caps Vactrol 220n VACT_1 VTL5C/3 Switch 470k 100pF WAVE On/Off/On 100pF Pots 100pF 22uF DELAY 47uF DEPTH 100kB 220uF FDBK 50kB 10uF 50kB 100n 470pF RATE 100kC 220n 150R 100pF 100n 100k 10uF Diodes 100k 10uF 1N5817 100k 8.2v Zener...
Page 3: Shopping List
Shopping List Value Type Rating Value Type Rating 100R Metal / Carbon Film 1/4W 1N5817 150R Metal / Carbon Film 1/4W 8.2v Zener (for MN/v 3205 BBD) Metal / Carbon Film 1/4W 1n914 Metal / Carbon Film 1/4W diffused, any color 3 or 5mm Metal / Carbon Film 1/4W...
Page 5 1590BB Drill Guide – 5.8” W x 6.83” H Download the Photoshop template here: http://www.madbeanpedals.com/projects/Aquaboy/docs/ABDX2015_DRILL.zip...
Page 6 True Bypass Wiring Jumper the two “S1” pads. Omit R58, R59 and jumper C40 instead of using the 1uF cap listed. The bypass LED and D4 (LFO rate indicator) can be mounted directly to the PCB.
Page 7 Tails Wiring This option has been added but is not yet tested on this project. I have used this bypass on similar projects so it should work fine. Note that Tails wiring is not true-bypass. The bypass LED and D4 (LFO rate indicator) can be mounted directly to the PCB.
Page 8 The Aquaboy Deluxe (ABDX) is a “feature expansion” version of the original madbeanpedals Aquaboy project. The ABDX is based on the classic DM-2 analog delay with the addition of dual delay BBDs (for twice the delay of a DM-2), delay modulation and the ability to use several different types of bucket brigade devices.
Page 9 All analog delays have two essential ingredients: the bucket brigade device and the clock The BBD is made up of hundreds or thousands of tiny mosfet transistors (called steps) that delay the input signal via capacitive charging (each step may also be referred to as a clock cycle).
Page 10 There are several types of BBDs and Clocks that work with the ABDX The ABDX accepts different types of BBDs and their clock counterparts. The following chart illustrates the advantages and disadvantages of each. Note that the Clock type does not contribute to the pros/cons. They are simply the appropriate chips to use in each circumstance. Clock Steps Pros...
Page 11 Setting the jumpers You need to set two jumpers on the ABDX PCB in order to deliver the correct power and ground. The different BBD types require these on specific pins and they are different between devices. The MN3005 and MN3008 require power on pin 1 and ground on pin 5. Set the jumpers on the PCB like this: The MN3205, v3205 and BL3208B require power on pin 5 and ground on pin 1.
Page 12 MN3005 / 3008 Power Supplies MN3005 and MN3008 can be run at 9v, 12 or 15v DC. 15v operation is recommended however it must be regulated as this is max power supply these devices can handle. When running 12 or 15vDC, you must use the MN3101 clock. For 9v operation, use the MN3101 for the MN3005 and MN3102 for the MN3008. If you are running the ABDX at 15v regulated, then you should plan ahead how you will accomplish this.
Page 13 MN3205 / BL3208B / v3205 Power supplies The power requirements for the MN3205, BL3208 and v3205 are slightly different. The MN3205 and v3205 are usually run at about 8.2v whereas the BL3208 can run up to 10v. I recommend using a 9v power supply for these devices. For the MN3205 and v3205, use an 8.2v Zener for D2. This will limit the BBD power (VD) to about 8v or so.
Page 14 Reducing Distortion R55 and R27: These are two series resistors at the input of each BBD. Their purpose is to provide some signal limiting when using the v3205 BBD. This should help reduce distortion on the delay repeats which is a common problem with this particular device. You should definitely socket both of these components. I suggest a value of 100k for R55 and 470k for R27.
Page 15 Troubleshooting Problem Solution No delay, no dry audio Check your wiring and make sure the ADBX is receiving power. Audio probe pins 1 and 7 of IC1 to see where the dry audio drops out. Dry audio, but no delay Audio probe pin7 of IC2 to confirm that the compander is working.

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