Pearl - PH-44 ( Phaser )  [schematic]

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borislavgajic
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Post by borislavgajic »

http://www5b.biglobe.ne.jp/~houshu/synth/Ph44core.gif

Does enyone have something more on this???
please

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Post by Bernardduur »

I have one now open and tracing........ man, big pedal with a lot of connections :)
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Post by The Rotagilla »

I've only got the schematic for the PH-03, sorry. :cry:
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borislavgajic
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Post by borislavgajic »

I have one now open and tracing.....
some guts ??? ...................thanks :thumbsup

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Post by kierc »

There's one on eBay right now (couple of hours left though! @ £49 atm)
http://cgi.ebay.co.uk/RARE-80s-Pearl-Ph ... dZViewItem

Just thought I'd post it!

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Post by Bernardduur »

Schematic (put in parts as it is a HUGE one :))

PSU
Audio path
Phase stages
Parameters
Switching

The huge thing on the right on the parameters schematic is a MC14007 IC with the pinnumbers..... didn't have on in my software. Everything in this unit is fed with the V+2 (12V) but the LEDs are fed with V+1 (18V). Speed ramps up and down when the speed button is pressed.

Part marked "switch" in "Switching" schematic connects to "Sw" in "Audio path" schematic
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Post by The Rotagilla »

Awesome, thank you!
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borislavgajic
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Post by borislavgajic »

thanks...... it is big!!!

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Post by unbeliever »

Thanks. :thumbsup

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Post by Dirk_Hendrik »

Bernard,
Excellent work! Those buggers are bitches to trace.
Sorry. Plain out of planes.

http://www.dirk-hendrik.com

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borislavgajic
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Post by borislavgajic »

can somebody please repost those images and schemes???

thanks

boris

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Post by Bernardduur »

I'll upload em

Check
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Post by mictester »

Bernardduur wrote:I'll upload em

Check
Excellent!

Now that's a different way of doing a phase stage! If you select the transistors (or use an array on an IC), you can eliminate differences between stages. I'm going to have a play with that way of doing things. Thanks for posting your tracing! :thumbsup
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borislavgajic
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Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
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...CE-2,ibanez fL301,EH theCloneTheory
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Post by borislavgajic »

Bernardduur wrote:I'll upload em

Check
:hug: :D

borislav

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Post by floris »

Bernardduur wrote:I'll upload em
Check
I know it has been a long time...
But can someone upload again the original, and hopefully higher resolution than currently on PhotoBucket, schematic picts of this PH44?
I'm having trouble reading the components.
Thanks!

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Bernardduur
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Post by Bernardduur »

Pearl PH44 - Phase.jpg
Pearl PH44 - LFO.jpg
Pearl PH44 - Audio.jpg
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Post by Bernardduur »

Pearl PH44 - Power.jpg
Pearl PH44 - Switch.jpg
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Post by floris »

Thank you Bernardduur for the high res schematics!

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Post by modman »

https://reverb.com/item/4410953-pearl-phaser-ph-44

My new car was cheaper than this!
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pearl ph44 01.jpg
pearlphaser ph44 03.jpg
ph44price.png
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Post by JMX »

never mind...

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