madbeanpedals::forum

Projects => Build Reports => Topic started by: drog_trog on October 22, 2018, 03:00:04 PM

Title: POLYPHASE
Post by: drog_trog on October 22, 2018, 03:00:04 PM
BLAZAR PHASAR
Finished build of my EHX Polyphase clone
Great sounding 6 stage phaser using 3 x CLM8200/2
Went fairly smoothly really. When I had the first PCB done and the feedback was fully CW I got a weird whistle type noise. I did some messing around and was able to sort it out with the use of a trimpot. Super easy to bias, just needs a trimpot adjusting to 6.7V.

(https://i.postimg.cc/Fk04Kdzr/1.jpg) (https://postimg.cc/Fk04Kdzr)

(https://i.postimg.cc/ZWbSTqSm/2.jpg) (https://postimg.cc/ZWbSTqSm)

(https://i.postimg.cc/YvdwjwrW/3.jpg) (https://postimg.cc/YvdwjwrW)

(https://i.postimg.cc/ygZqfgFm/4.jpg) (https://postimg.cc/ygZqfgFm)

(https://i.postimg.cc/zLMZSSRD/5.jpg) (https://postimg.cc/zLMZSSRD)

Title: Re: POLYPHASE
Post by: ahiddentableau on October 22, 2018, 04:15:17 PM
Congratulations on completing such an involved project.  Really impressive stuff.  And your build looks like it really turned out well.  Nice one.
Title: Re: POLYPHASE
Post by: Bio77 on October 22, 2018, 04:57:52 PM
Excellent build! Looks great.

Did you make the pcb? 
Title: Re: POLYPHASE
Post by: drog_trog on October 22, 2018, 04:59:20 PM
Quote from: Bio77 on October 22, 2018, 04:57:52 PM
Excellent build! Looks great.

Did you make the pcb?

Thanks...yes i did the pcb.
Title: Re: POLYPHASE
Post by: Bio77 on October 22, 2018, 05:39:16 PM
Quote from: drog_trog on October 22, 2018, 04:59:20 PM
Thanks...yes i did the pcb.

Even cooler, congrats. 
Title: Re: POLYPHASE
Post by: jjjimi84 on October 22, 2018, 07:12:29 PM
That looks so awesome, congrats on a crazy hard build.
Title: Re: POLYPHASE
Post by: gordo on October 22, 2018, 07:26:42 PM
Whoa!!  Nicely done!
Title: Re: POLYPHASE
Post by: DLW on October 22, 2018, 08:27:27 PM
Nice work!
Title: Re: POLYPHASE
Post by: drog_trog on November 13, 2018, 12:13:59 AM
(https://i.postimg.cc/bdx4c3vd/POLYPHASE-SCHEMATIC.png) (https://postimg.cc/bdx4c3vd)
Title: Re: POLYPHASE
Post by: cooder on November 13, 2018, 01:31:43 AM
Amazeballs! Great achievement, spiffin' looks, I bet it sounds fab!
Title: Re: POLYPHASE
Post by: peAk on November 13, 2018, 10:34:40 PM
Fantastic, would love to hear it