Top Gear - Sound Rotator
- borislavgajic
- Opamp Operator
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- Posts: 1542
- Joined: 27 Feb 2008, 14:23
- Completed builds: ...script phase90,ETI phaser,Ross phaser,mutronC200,vox wah,WH10,FW-3,mutronIII,DrQuack,Penfoldautowah,Tubezipper,
Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
...buzzaround,fuzzfactory,screwdriver,sho,superdouper,St-9,RogerMayer octavia,Tychobrahe octavia,paralelluniverse,string damper,slowgear
...CE-2,ibanez fL301,EH theCloneTheory
EHX bassmicrosynth,EHX EnglishMuffin,Tube Phaser,springtubereverb ,greyDOD,FulldriveII mosfet,OCD,VOX repeat percussion,RingStinger,Meatball,12stage phaser.... - Location: Sombor , Serbia
- Has thanked: 131 times
- Been thanked: 281 times
- MoreCowbell
- Transistor Tuner
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I dig the old stripboard layout. I wish the pics were more clear, but I'm sure it was a PITA to get pictures of a rare old unit like that in the first place....
Thanks...
Thanks...
- Bernardduur
- Transistor Tuner
Wow..... that looks really nice...... what does it do? I "guess" chorus and tremolo????
Some better pics here although they won't add much
Some better pics here although they won't add much
'No more....... loud music.......'
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
- borislavgajic
- Opamp Operator
Information
- Posts: 1542
- Joined: 27 Feb 2008, 14:23
- Completed builds: ...script phase90,ETI phaser,Ross phaser,mutronC200,vox wah,WH10,FW-3,mutronIII,DrQuack,Penfoldautowah,Tubezipper,
Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
...buzzaround,fuzzfactory,screwdriver,sho,superdouper,St-9,RogerMayer octavia,Tychobrahe octavia,paralelluniverse,string damper,slowgear
...CE-2,ibanez fL301,EH theCloneTheory
EHX bassmicrosynth,EHX EnglishMuffin,Tube Phaser,springtubereverb ,greyDOD,FulldriveII mosfet,OCD,VOX repeat percussion,RingStinger,Meatball,12stage phaser.... - Location: Sombor , Serbia
- Has thanked: 131 times
- Been thanked: 281 times
it has 4 ldr's ...placed around light bulb........so it is IMHO transistor vibrato..or phaser...
it sounded very dull and muddy ...
I had it for one day only ..long enaugh to take photos....
http://www.harpamps.com/schematics/univibe.pdf
it sounded very dull and muddy ...
I had it for one day only ..long enaugh to take photos....
http://www.harpamps.com/schematics/univibe.pdf
- DiscoFreq
- Resistor Ronker
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EffectsDatabase: http://www.effectsdatabase.com
22000 pedals, 4000 brands, 350 brand interviews
NAMM 2016: http://fxdb.org/namm
22000 pedals, 4000 brands, 350 brand interviews
NAMM 2016: http://fxdb.org/namm
- borislavgajic
- Opamp Operator
Information
- Posts: 1542
- Joined: 27 Feb 2008, 14:23
- Completed builds: ...script phase90,ETI phaser,Ross phaser,mutronC200,vox wah,WH10,FW-3,mutronIII,DrQuack,Penfoldautowah,Tubezipper,
Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
...buzzaround,fuzzfactory,screwdriver,sho,superdouper,St-9,RogerMayer octavia,Tychobrahe octavia,paralelluniverse,string damper,slowgear
...CE-2,ibanez fL301,EH theCloneTheory
EHX bassmicrosynth,EHX EnglishMuffin,Tube Phaser,springtubereverb ,greyDOD,FulldriveII mosfet,OCD,VOX repeat percussion,RingStinger,Meatball,12stage phaser.... - Location: Sombor , Serbia
- Has thanked: 131 times
- Been thanked: 281 times
I could get to this pedal again........so is somebody interested to trace this .....and to help me fixing it......sound was not sharp (clear)........bad capacitors??? something else......
if there is any interest,I will get to it
boris
if there is any interest,I will get to it
boris
- Professor SourTone
- Solder Soldier
Boris - its possible I now own this pedal, as it came to me from Serbia - is there a schematic anywhere?borislavgajic wrote:I could get to this pedal again........so is somebody interested to trace this .....and to help me fixing it......sound was not sharp (clear)........bad capacitors??? something else......
if there is any interest,I will get to it
boris
- Professor SourTone
- Solder Soldier
It is now being looked at - lots of things wrong with it, bad photocell, oscillator, transformer buzz. Wet still very dull and wet/dry not "summing", whatever that means. It will sound very different when fixed, I suspect. H
- Professor SourTone
- Solder Soldier
- Professor SourTone
- Solder Soldier
Herewith circuit diagram + post-fix gutshots by Dan Coggins of Dinosaural, although he stresses that without rebuilding it, the oscillator section may not be 100% correct.
It had a dead RPY58A photoresistor (replaced with ORP12, similar functionally), oscillator needed tuning, lube trimpots, fix buzzing transformer, dry joint on level pot.
One mod, 22k "straight blend" mod resistor across bypass switch to brighten it up. Buffer recommended as input impedance very low.
https://flic.kr/s/aHsmi83jTG
Its not arrived home yet, but the IG link in my previous post suggest its a changed beast!
It had a dead RPY58A photoresistor (replaced with ORP12, similar functionally), oscillator needed tuning, lube trimpots, fix buzzing transformer, dry joint on level pot.
One mod, 22k "straight blend" mod resistor across bypass switch to brighten it up. Buffer recommended as input impedance very low.
https://flic.kr/s/aHsmi83jTG
Its not arrived home yet, but the IG link in my previous post suggest its a changed beast!
- Scruffie
- Opamp Operator
And here I was thinking it was just going to turn out to be another UniVibe, that actually looks interesting, seems it's just a transistor based version of the later 'Rotator'. I'll be interested to hear how it sounds, I can't quite picture it.
- Nocentelli
- Tube Twister
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- Posts: 2222
- Joined: 09 Apr 2009, 07:06
- Location: Leeds, UK
- Has thanked: 1154 times
- Been thanked: 954 times
I'm also intrigued. If you can't see the flickr schematic, it's like four colorsound inductor-less twin-T wah circuits in parallel but all tuned to different bands, and all modulated by a (PSO?) LFO. I am going to type thing out with a LED instead of the lamp.Scruffie wrote:interested to hear how it sounds, I can't quite picture it.
modman wrote: ↑ Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...
- Professor SourTone
- Solder Soldier
I will have a go - what’s the recommended way nowadays, photobucket is hopeless now.Zokk wrote:Hi, please could you post the pictures on another media: both links don't work for me.
Thanks.
- Professor SourTone
- Solder Soldier
This from Dan - “A view of the audio filter board. There are four summed (parallel) band-pass filters using Wien-bridge networks, whose frequency bands are roughly an octave apart and each are adjusted to be on the threshold of resonance using individual trimpots. The four of these single transistor stages added together provides four deep notches that sweep up and down together and carve out the input signal. The additional resistor provides more straight signal bandwidth for these to cancel agains @Level=8.”Nocentelli wrote:I'm also intrigued. If you can't see the flickr schematic, it's like four colorsound inductor-less twin-T wah circuits in parallel but all tuned to different bands, and all modulated by a (PSO?) LFO. I am going to type thing out with a LED instead of the lamp.Scruffie wrote:interested to hear how it sounds, I can't quite picture it.
- Zokk
- Resistor Ronker
Thanks, you can upload the pictures directly on the forum, check the tab below when you write a message :"upload attachment".Professor SourTone wrote: I will have a go - what’s the recommended way nowadays, photobucket is hopeless now.
- Professor SourTone
- Solder Soldier
- EddieTavares
- Breadboard Brother
How does it sound?