DAYTONA PH611 six stages phase shifter (1977)
Hi everyone ! Just bought this pedal recently for 100€ and it seems to be an original Daytona PH611. Almost no information online, so I decided to open it up and trace the schematics in case of anyone needing it. Here are a few pics of the pedal as well. I like the fact that it has an input buffer, even if the pedal is not true bypass.
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- Pedal picture
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- Inside
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Daytona PH611 schematics.pdf- PDF Schematics, hand drawn (sorry)
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Hello,
I got this one also
Thanks you very much for all the info you posted, and especially the video !
I moded mine for 9V input, i noticed, that the pedal was saturating ( in a not nice / usefull way, cracking kind of ) very quickly when the 9V batteries wheren't super new. Using a clean power supply was an improvement.
I'll add a power supply filtering cap as you suggested in the video, thanks !
Regarding mods :
I suppose i can rise the feedback by lowering the equivalent value of the two paralell resistors to the left of the color pot ?
I really would like to improve the range of the Intensity setting,
preferably to be able to turn it off completely ( which is not the case when the knob is at "0". Do you think it is possible ? how ?
( nb the Bias trimmer on my pedal is still in factory setting - position sealed with glue )
Any other mods you think could be interesting on this pedal ?
I got this one also
Thanks you very much for all the info you posted, and especially the video !
I moded mine for 9V input, i noticed, that the pedal was saturating ( in a not nice / usefull way, cracking kind of ) very quickly when the 9V batteries wheren't super new. Using a clean power supply was an improvement.
I'll add a power supply filtering cap as you suggested in the video, thanks !
Regarding mods :
I suppose i can rise the feedback by lowering the equivalent value of the two paralell resistors to the left of the color pot ?
I really would like to improve the range of the Intensity setting,
preferably to be able to turn it off completely ( which is not the case when the knob is at "0". Do you think it is possible ? how ?
( nb the Bias trimmer on my pedal is still in factory setting - position sealed with glue )
Any other mods you think could be interesting on this pedal ?
Hey all,
i worked on the feedback mod today.
because i'm lazy, i just added another parallel resistor on top of the one on the solder side of the pcb.
After a few test i setteled on a 68K, which theorically give an equivalent resistance value of 10.5K.
with an 82K, self oscillation was starting.
this add a bit of nice clean "resonnance" to the phaser if needed
I'd love to be able to make a "manual mode" for the lfo, or being change the bias / range of the lfo a little bit more to be able to have the effect focused on the right frequencies, especially with clean guitars... if anyone have a clue ?
i worked on the feedback mod today.
because i'm lazy, i just added another parallel resistor on top of the one on the solder side of the pcb.
After a few test i setteled on a 68K, which theorically give an equivalent resistance value of 10.5K.
with an 82K, self oscillation was starting.
this add a bit of nice clean "resonnance" to the phaser if needed
I'd love to be able to make a "manual mode" for the lfo, or being change the bias / range of the lfo a little bit more to be able to have the effect focused on the right frequencies, especially with clean guitars... if anyone have a clue ?
