The complete BBD clock archive

Frequent asked about building blocks: gain stages, buffers, clipping configurations, ...
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Fender3D
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Post by Fender3D »

Hello guys,

I hope this is the proper board for this thread

I noticed this great forum lacks the main info about BBD based pedals...
CLOCK.

Heck, we can search for every fuzz face's single node voltage, we have constant requests about "what voltage here and/or there" in workbench board...
but we have few or no info about BBD based pedals clocks.

I think we need an exaustive clocks archive if we wanna properly clone BBD based pedals.

I think max. and min. clock measured @ BBD pins and power supply used should be enough to nail THAT sound or, at least, to estimate delay time.

Please add your suggestions and/or tips.

Thanks.

This might be an example:

MXR Micro flanger:
I powered it with a stabilized power supply @ 9.6V
max clock freq at SAD's pin 1 is 850KHz (@ min rate)
min clock freq at SAD's pin 1 is 133KHz (@ min rate)

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Scruffie
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Post by Scruffie »

EHX Echoflanger Frequencies courtesy of Graemey's Stompbox Secrets, taken at Pin1 of the 4013.

Tune - CW
Width - CCW
Rate - CCW
Feedback - CCW
Filter Matrix 341kHz
Double Track 110.9khZ

Tune - CCW
Width - CCW
Rate - CCW
Feedback - CCW
Filter Matix 54.5kHz
Double Track 17.71kHz

Tune - CW
Width - CW
Rate - CCW
Feedback - CCW
Flange 439-50kHz
Chorus 114-82kHz

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Scruffie
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Post by Scruffie »

I collected some readings from another 2 Echoflanger after helping people debug them and set the clock to the factory setting.

1st Unit.

Settings
Tune - CW
Width - CCW
Rate - CCW
Feedback - CCW

Filter Matrix - 250kHz
Double Track - 66kHZ

Settings
Tune - CCW
Width - CCW
Rate - CCW
Feedback - CCW

Filter Matrix - 36kHz
Double Track - 10kHz

Settings
Tune - CW
Width - CW
Rate - CCW
Feedback - CCW

Flanger 35 - 330kHz
Chorus 14 - 20khZ

Second Unit

Settings
Tune - CW
Width - CCW
Rate - CCW
Feedback - CCW

Filter Matrix - 261kHz
Double Track - 81kHZ

Settings
Tune - CCW
Width - CCW
Rate - CCW
Feedback - CCW

Filter Matrix - 43kHz
Double Track - 14kHz

Settings
Tune - CW
Width - CW
Rate - CCW
Feedback - CCW

Flanger 40 - 365kHz
Chorus 20 - 28khZ

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Post by Dirk_Hendrik »

How easy it would be to add the P/N of the chip to the summing up. :secret:
Sorry. Plain out of planes.

http://www.dirk-hendrik.com

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Post by Scruffie »

Dirk_Hendrik wrote:How easy it would be to add the P/N of the chip to the summing up. :secret:
Scruffie wrote:EHX Echoflanger Frequencies courtesy of Graemey's Stompbox Secrets, taken at Pin1 of the 4013.

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Post by tube-exorcist »

Isn´t normally meant with "P/N" the Part Number (e.g. SAD1024; MN3007) instead of the pin number of the clock driver ?

Just asking....
"I've noticed there's an inverse relationship between cost of gear and talent. If you need the most expensive gear to get decent tones, then you suck as a player."

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Post by Fender3D »

MXR Flanger M117 courtesy of Dave oldschoolanalog @diystompboxes

readings taken at BBD's pins

stock power supply 15V

Unit1:
Width fully CCW
Manual fully CW 29KHz
Manual fully CCW 960KHz

Unit2:
Width fully CCW
Manual fully CW 32KHz
Manual fully CCW 965KHz

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Post by Fender3D »

ROSS Flanger w/SAD1024 courtesy of miketbass @ DIYstompboxes

readings @ SAD's pin 8:

stock power supply 15V

manual full CCW: 32KHz
manual full CW: 625KHz

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Post by Fender3D »

DOD Chorus FX65B

Min clock 62.5KHz
Max clock 71KHz

Courtesy of hemisfeer

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Post by Sendy CZ »

Ibanez UE400 - first version (1980?) with distortion (not overdrive) and compressor section with CA3080 OTA :
Flanger/Stereo Chorus section with NE571, MN3007, MN3101 :
min. clock 40-45kHz (WIDTH = CCW, SPEED = CCW, FEEDBACK = CCW)
Chorus and Flanger clock is the same

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Post by VivMeLol »



Rockman X100 chorus doubler
LFO 1.7 Hz
Triangle

Stock is 50.6 to 51.6 khz (ratio 1.02)

We modded to 48.9 to 59 kHz (ratio 1.2)

Video has chorus going into the echo reverb built into the X100, so you are not hearing the effect of chorus alone

Thanks to Pedro Yi for the hard work of opening X100, modding it, measuring it, making Video.

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