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100% Analog Bucket Brigade Delay

User Manual Version 1.0 - Draft

Last Revision 11/20/2020

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Summary of Contents for ANALOGER ADG-1

Page 1: ...100 Analog Bucket Brigade Delay User Manual Version 1 0 Draft Last Revision 11 20 2020 ...

Page 2: ...oxes We then added a special blend of two tightly tuned 5th order anti alias and reconstruction filters a unique 5 amp high current BBD driver with an analog clock and exponential modulation technology to obtain unprecedented sound richness clean tails and true fractional delay in a compact footprint This is the first in what we hope to be a long line of time phase frequency control voltage based ...

Page 3: ...igital cameras still do this today for the same reason Now they are used for audio in delays chorus and flangers The ADG 1 uses a recreation of the Matsushita Panasonic MN3005 PMOS BBD from Xvive The MN30xx series BBDs use a higher voltage for more clarity lower noise more headroom and lower distortion than the MN320x NMOS types usually found in most stomp boxes however they have lower range of de...

Page 4: ...same time Half the signal is clocks behind the rest of the signal yet combined at the same time making for a strange time domain merger and mixing of the signals slightly out of time Other components also affect the sound The design of the companding and emphasis de emphasis network designed to improve the signal to noise ratio affects the animation breathing overshoot and tightness of the sound l...

Page 5: ...orical background In the 1990s Panasonic released an applications note and data sheet book about BBDs and Digikey used in in their marketing On the cover and back of this book was a picture of firemen in a bucket brigade line This represents the BBDs function of passing the sound from one capacitor or bucket to another and 4096 times before it goes out 8192 times for us by varying the clock thus d...

Page 6: ...V battery The ADG 1 has an input level control and flexible bypass making it able to be used in various configurations for guitar synthesizer or line level applications including Standard pedal use ADG 1 connected into an amplifier input with or without other pedals You may use the pedal in either Buffered or True bypass mode in this configuration Insert Effect Connect the ADG 1 to the effects sen...

Page 7: ...o damage your speakers or headphones Note If not using the expression input be sure the expression switch is NOT SET TO THE TIME POSITION to start We recommend setting it to AMT if not using this feature To start set the ADG 1 to the Home position as shown in the graphics to the right Set TIME MIX TONE straight up 12 00 Set FEEDBACK RATE AMOUNT switch fully counter clockwise 7 00 Set DRIVE slightl...

Page 8: ...els through 1 or 2 BBDs 4096 or 8192 stages and so halves or doubles the delay time 35mS 700mS or 17 350ms And while there is clearly some overlap as you can often get the same delay time from either setting the tone is slightly different so you may have a preference for one position or the other In general use the down position for long reverberant delays Use the up position for more sparkly shim...

Page 9: ...ear a slight delay sound in the mix This is to make the knob easier to adjust and dial in an exact mix Note If you re applying a sustained steady pitch to the ADG 1 and have the MIX knob set near 12 00 you may find that the direct and delayed signals alternately reinforce and cancel each other in rapid succession as the DELAY TIME is varied This is a normal result of mixing a steady pitch with a d...

Page 10: ...RATE knob adjusts the speed or rate of modulation from about 0 08Hz to 40Hz wider range via control voltages Lower settings provide slow whoosh or a rhythmic pitch shift Medium speeds are a chorus like effect while faster rates provide a gargle bubble or vibrato sounds AMOUNT The Amount knob controls the range of pitch movement at the speed of the LFO aka the amount of effect Use low amounts for s...

Page 11: ...sion switch will reduce the minimum knob setting slightly The FEEDBACK RATE and AMOUNT control voltages are additive This means that the knob position is added to the expression position For full control voltage range set the knob to the most Counter Clock Wise CCW setting TIME behaves differently as it is bi polar This means that as the time level is decreased around a 2 5V midpoint the pitch wil...

Page 12: ...ou will see 2 switches underneath the jack board on the edges of the PCB These are the ONLY user accessible options on your ADG 1 They select two functional options for the pedal s behavior Do not adjust any of the carefully calibrated factory set trim pots TRUE BYPASS BUFFERED BYPASS Use this switch on the left side of the jack board to select true bypass Default or buffered bypass In true bypass...

Page 13: ...lifier consists of a discrete high impedance JFET input stage that can be used as an always on buffer The preamplifier circuit can be used for gain matching or to overdrive the delay line and mixer section for unique artifacts and character that only an analog delay can provide The analog clock generation modulation oscillator and even the switch logic are all fully analog Our VCO with temperature...

Page 14: ...ilt like filter HPF 6dB 15dB LPF 4dB 7dB Bucket Toggle 1 or 2 BBDs 4096 or 8192 buckets LFO toggle Triangle or slewed Square wave Bypass Footswitch effect on off user selectable True Bypass or JFET Buffered Tails Mod Footswitch User selectable modulation kill or engage trails bypass sometimes called Spillover Expression Switch 4 position rotary selects Time Feedback Rate or Amount controlled by ex...

Page 15: ...plied current limited 5V Control on Tip Delay time 35mS 700mS Dual BBD mode 17 350mS single bucket mode Input impedance 1MΩ Output impedance 1KΩ Max 5k max for buffered bypass Max input level 15dBµ 4 3V RMS Max output level 14dBµ 3 9V RMS Maximum drive 23dB covers attenuation to gain Noise Reduction 2 1 broadband with 12dB HF emphasis Physical Specifications Genuine Hammond die cast aluminum enclo...

Page 16: ...the mountains of Western North Carolina Changelog Revision Date Notes Rev A xx xx 2020 Production Release shipped with first Rev A units Rev 1 11 20 2020 Prototype Manual released before product shipping Visit our website for more information mods hacks and presets www AshevilleMusicTools com ...

Page 17: ...the drive for an even more aggressive sound or dial it back and try it with arpeggios Cavernous Hallway Hello Hello Hello Is there anybody in there Do we have an echo in there Reverberant echoes Try dialing up some modulation for more fun Fold Under low pass Delay Long repeat delay where each echo slowly becomes less and pronounced as they fade out Each repeat loses detail and folds under your mix...

Page 18: ...ask your parents about 16mm school projectors Faux Flanger Phased hollow delay with peaky and present movement It is similar to a Flanger yet with longer delay times Adjust the feedback to that sweet spot right before oscillation and the amount to bring out the tone the best Wet Pseudo Chorus A long drippy lush chorused sound with longer than average delay times Dial in rate and amount until you g...

Page 19: ...end of a tunnel talking through an old telephone Modulation off Square Jumps Tune this by ear using amount and time controls for a bouncy whimsical octave echo or a chaotic atonal warble Tape Wash Bright repeats fade away into the ether No motor repair necessary Wow others with the flutter Modulation off ...

Page 20: ...onus points if you turn your amp to 11 Modulation off Lofi Vibes Take advantage of the ADG 1 s lush filter to construct a lo fi vibrato evocative of vintage recordings Slap Back Delay Short delay doubling Chicken Pickin and finger licken good Modulation off ...

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