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Introduction 

 

Thank you for your purchase of Asheville Music Tool’s ADG-1 Analog 
Delay. This pedal, engineered by renowned analog delay designer 

Hawker

features two reissue Bucket Brigade Delay lines, for up to 700mS of delay. 
It is coupled with a Low Frequency Oscillator and uses control voltage 
topology to give you the best sound, features, and control available in any 
fully analog delay currently on the market. We hope you enjoy many years 
of use from your delay and find it as inspiring and fun to play as we have. 

 

The ADG-1 is a marriage of vintage audio processing techniques and 
advanced, high-tech electronics. It is designed using modern quality 
components for uncompromising sound, musical expression, features, and 
reliability. We started with a high voltage 15V power supply powering a 
pair of studio grade MN3005 BBDs, unlike the lower cost MN320x pedal 
grade BBDs found in most stompboxes. We then added a special blend of 
two tightly tuned 5

th

 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 modulation, and synthesizer heritage inspired effects 
from 

Hawker

. The ADG-1 comes from and is inspired by delay-based 

effects that 

Hawker

 has previously designed for other companies and 

builds on his experience and expertise. 

 

A special thank you and mention is needed for two people: 

 

Kelly Bowers,

 my life partner, land-mate and co fur-parent for her love, 

faith and dedication, and for pushing me to start designing products for 
myself rather than others.  

 

John Snyder

, from Electronic Audio Experiments, for his friendship, 

collaboration and help in bringing this pedal to market. Your experience, 
patient advice, handholding and support were what made this possible. I 
could not have done it without you.

 

 

Содержание ANALOGER ADG-1

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

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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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