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DIY Stompboxes => Building your own stompbox => Topic started by: johnabraham on February 11, 2007, 09:18:57 AM

Title: Roger Mayer Octavia Octavio
Post by: johnabraham on February 11, 2007, 09:18:57 AM
Check out RM's web site under Octavia.
Title: Re: Roger Mayer Octavia Octavio
Post by: johnabraham on February 11, 2007, 10:00:44 AM
http://www.roger-mayer.co.uk/octavia.htm

It's the box in Seattle.
Title: Re: Roger Mayer Octavia Octavio
Post by: johnabraham on February 11, 2007, 12:23:46 PM
Pre-Tycobrahe for sure, and designed well before it was implemented into the Helios recording studio consoles within Olympic sound studios by the way.

Those who can invent do, those who can't invent copy... end of story.
Title: Re: Roger Mayer Octavia Octavio
Post by: R.G. on February 11, 2007, 02:39:46 PM
Quote
Those who can invent do, those who can't invent copy... end of story.
Life is so clean and clear when you're young.   :)
Title: Re: Roger Mayer Octavia Octavio
Post by: slacker on February 11, 2007, 03:13:59 PM
Those who can invent do, those who can't invent copy... end of story.

So says the man who's done quite nicely for himself selling fuzzface and univibe clones... end of story.
Title: Re: Roger Mayer Octavia Octavio
Post by: analogguru on February 11, 2007, 05:08:40 PM
Quote
...and designed well before it was implemented into the Helios recording studio consoles within Olympic sound studios by the way

Oh, some new and interesting information: the Helios-console was a big Octave-Fuzz-Box....

Quote
Those who can invent do, those who can't invent copy... end of story.

Hmmm.....so:
In 1976 the Proco Rat was the only distortion box which used a LM308 and a 6db/Octave low-pass-filter after a two diode-clipping-stage....you can find a schematic here:

http://analogguru.an.funpic.de/schematics/Proco_TheRat-1986.gif (http://analogguru.an.funpic.de/schematics/Proco_TheRat-1986.gif)

Here:
http://www.roger-mayer.co.uk/mongoose.htm (http://www.roger-mayer.co.uk/mongoose.htm)
you can read, that the Roger Mayer Moongose Fuzz was developed in 1985.

As you can see in the schematic:
http://analogguru.an.funpic.de/schematics/RogerMayer_Mongoose.gif (http://analogguru.an.funpic.de/schematics/RogerMayer_Mongoose.gif)
it uses a LM308, a two-diode-clipping-stage and a 6dB/Octave low-pass-filtering afterwards-

Here:
http://www.roger-mayer.co.uk/spitfire.htm (http://www.roger-mayer.co.uk/spitfire.htm)
you can read, that "the Roger Mayer Spitfire is the latest fuzz guitar effect in the Rocket Series..." so it was developed after 1985.

When you look at the schematic:
http://analogguru.an.funpic.de/schematics/RogerMayer_Spitfire.gif (http://analogguru.an.funpic.de/schematics/RogerMayer_Spitfire.gif)
you can see, that it uses a LM301 (similar to LM308), a two diode-clipping-stage and a 6db/octave low-pass-Filter.

very similar.....

Quote
Those who can invent do, those who can't invent copy... end of story.

Alltogether this can only mean, that the Proco-Rat was derived from Roger Mayerīs Moongose and Spitfire Fuzz.

Welcome to:  "Back to the Future" !!!   (This is a film, not a song by "Ten Years After")

Under this circumstances you are right with this statement:

Quote
Those who can invent do, those who can't invent copy... end of story.

analogguru
Title: Re: Roger Mayer Octavia Octavio
Post by: Pedal love on February 11, 2007, 05:48:44 PM
(http://www.angelfire.com/rock3/taktech/pedal2.JPG)
Title: Re: Roger Mayer Octavia Octavio
Post by: Pedal love on February 11, 2007, 11:56:51 PM
Whatever?
Title: Re: Roger Mayer Octavia Octavio
Post by: johnabraham on February 12, 2007, 07:47:52 AM
analogguru, The Helios-Olympic config was published in text books earlier. The text book configs were developed further... I stand corrected in implying the Octavia was implemented into Olympic above in the thread-  not the case. Two seperate issues, or forms of design.
Title: Re: Roger Mayer Octavia Octavio
Post by: analogguru on February 12, 2007, 09:05:47 AM
Quote
The Helios-Olympic config was published in text books earlier.

This is what I am interested since this two threads:

http://www.diystompboxes.com/smfforum/index.php?topic=52731.0 (http://www.diystompboxes.com/smfforum/index.php?topic=52731.0)
http://www.diystompboxes.com/smfforum/index.php?topic=53494.0 (http://www.diystompboxes.com/smfforum/index.php?topic=53494.0)

where I ask for the original publication of the Helios-Olympic config....
I believe, Roger will know the "text book" in which this was published.
And I like to see this original publication, that I can decide for myself how much and what has been "developed further" in this "Two seperate issues or forms of design".

Thanks in advance for your help

analogguru
Title: Re: Roger Mayer Octavia Octavio
Post by: analogguru on February 12, 2007, 10:22:07 AM
@Pedal Love

nice picture, do you have also an inside-view of the same quality ?
sadly the inside-photo on the RM-site is very poor quality...

analogguru
Title: Re: Roger Mayer Octavia Octavio
Post by: Pedal love on February 12, 2007, 10:31:28 AM
(http://www.classicfuzz.com/pedal2.JPG)
Title: Re: Roger Mayer Octavia Octavio
Post by: Pedal love on February 12, 2007, 10:34:57 AM
Gee analoggoofru, why don't you catch a speeding train? :icon_evil:
Title: Re: Roger Mayer Octavia Octavio
Post by: analogguru on February 12, 2007, 11:16:02 AM
@pedestrian loverboy

Thank you for your tip, in the last minute a catched the speeding train, and inside there was a friendly guy waiting who gave me this:

(http://analogguru.an.funpic.de/pictures/RM_Octavio_c.jpg)

So what can I recognize there ?

a perf-board, an iron-core output transformer, a 9V-clip, a battery-holder, 4 philips-electrolytics, some film capacitors (one Ero), several resistors, manufactured by different european companies (Piher, Roederstein etc.) ...really nice, and not far away from Helios amplifier or a tyco octavia...

analogguru
Title: Re: Roger Mayer Octavia Octavio
Post by: Pedal love on February 12, 2007, 11:50:32 AM
Pedestrian Loverboy? Ouch you really told me Analoggoofoo       :o   
Title: Re: Roger Mayer Octavia Octavio
Post by: analogguru on February 13, 2007, 06:25:33 AM
sorry about the typing error...Did I get something wrong ?
Isnīt "Pedal Love" the short form of "Pedestrial  Loverboy  ?

Ok, lets go for serious talk:

Hollywood Pedal Pictures proudly presents:  Jimi live on stage together with wedged Octavio !

(http://analogguru.an.funpic.de/pictures/RM_Octavio_Hendrix.gif)

Sorry abut my question, but sadly I am not a guitarist:

As far as I can see, we have here Jimi and a guitar.
From the guitar is a cable to the Vox Wah (McCoy ?).
From the Vox Wah is a cable to a wedged Octavio and from there to a Fuzz Face.
the "pink"-cable has nothing to do with the setup....

Has this been the typical or "normal" setup and if yes, why this way ?
I would (at least) assume, that the wah would be after the Fuzz-Face...

thanks...

analogguru
Title: Re: Roger Mayer Octavia Octavio
Post by: MartyMart on February 13, 2007, 06:57:51 AM
Is the extra pedal far right a volume or additional wah ??


Oh, and what's all this "bickering" about boys ? !
Roger made some cool stuff, but last time I spoke to him he was quite "rude" to
be honest, i wasn't impressed.
Dealers say the same BTW

MM
Title: Re: Roger Mayer Octavia Octavio
Post by: ncc on February 13, 2007, 07:34:18 AM

I believe the pedal on the right is the speed control for the UniVibe.

Norm
Title: Re: Roger Mayer Octavia Octavio
Post by: RLBJR65 on February 13, 2007, 08:28:51 AM
Early 70's stuff, that pedal on the right looks kind of like one of those Morley / Tel-Ray oil can pedal effects. Echo Volume, Rotating Wah??
There is a pic of one in this thread http://www.diystompboxes.com/smfforum/index.php?topic=33576.0

It's hard to tell in the pic if thats all 1 piece or if there is a monitor or something else in front of a second wah or volume pedal?!?

Title: Re: Roger Mayer Octavia Octavio
Post by: petemoore on February 13, 2007, 11:20:08 AM
 That thing in front of..'monitor? to the lower right, certainly does look like a chrome wah pedal.
  Phaser speed controlled in Wah Case makes a great pedal.
Title: Re: Roger Mayer Octavia Octavio
Post by: leonhendrix on February 13, 2007, 11:55:52 AM
The input to a fuzz face was on the side. are you sure the green cable goes straight to the fuzz face? (it does go out of the picture)
(http://www.pdmcauley.co.uk/guitaristpages/pedal/vintagefuzz1.jpg)
Title: Re: Roger Mayer Octavia Octavio
Post by: Skreddy on February 13, 2007, 01:35:13 PM
Roger did say that the Octavia likes to be driven by a FuzzFace.  He also said that the version Jimi used in the BOG concert recordings (12-31-69/1-1-70) was one of the 10 wedge-shaped units he made with iron-core transformers.  Which means that the "correct" provenence of the Dunlop clone is properly the BOG live performance.  Perhaps not trivial that it's not the same version used in "Purple Haze" and "Fire" studio recordings, as claimed by Dunlop.

For what it's worth, I've heard a suite of Octavia-clone soundclips, and I actually did prefer the tone of the new Mayer version (transformerless) best.  Here's the discussion thread with the "shootout" clips... http://www.pedalpost.com/forum/showthread.php?t=83

Roger's informative posting, I feel, is not so much railing against the practice of cloning as a simple claim to a superior product.  Not only is that fair, I think it is at very least arguably borne out by actual comparisons.  If I had developed something (albeit from common building blocks) that I had spent years and many iterations improving, I'd certainly feel that my latest version would be better than clones of earlier iterations.  That's fair and just common sense.
Title: Re: Roger Mayer Octavia Octavio
Post by: tcobretti on February 13, 2007, 02:10:24 PM
That pic is from BOG where he certainly had a Univibe, so I think it is a very safe bet that the pedal in front of the monitor is a Univibe controller.

Analoguru, we had a thread here a while back where we talked about the possibility that the bypass of the octavia was wired in such a way so as to buffer the wah so it would still sound good before the FF.  However, I don't think anyone has seen a schem for the early Octavias, and I can't make it out from the pic you posted, so it's really just supposition.

I guess we could try to email Roger about it.
Title: Re: Roger Mayer Octavia Octavio
Post by: Meanderthal on February 13, 2007, 07:11:48 PM
Quote
Early 70's stuff

 Back to the future again...

 I'm firmly convinced the egg came before the chicken.

 That's an interesting pic...
Title: Re: Roger Mayer Octavia Octavio
Post by: vanessa on February 14, 2007, 03:49:59 AM

Sorry abut my question, but sadly I am not a guitarist:

As far as I can see, we have here Jimi and a guitar.
From the guitar is a cable to the Vox Wah (McCoy ?).
From the Vox Wah is a cable to a wedged Octavio and from there to a Fuzz Face.
the "pink"-cable has nothing to do with the setup....

Has this been the typical or "normal" setup and if yes, why this way ?
I would (at least) assume, that the wah would be after the Fuzz-Face...

thanks...

analogguru



The reason why the pedals are in this order is the because Fuzz Face sounds shrill before the wah-wah. But if the fuzz face is placed after the wah the wah effect disappears do to impedance issues. To get around this you can use the Octavio as a buffer (transformer version would help) between the two. Also I suspect the Octavio was not wired to be true bypassed so it would still act as a buffer even when the effect was off.


Title: Re: Roger Mayer Octavia Octavio
Post by: tcobretti on February 14, 2007, 07:15:26 AM
Vanessa, have you tried using the Octavia as a buffer and if so how did you wire the switch?
Title: Re: Roger Mayer Octavia Octavio
Post by: vanessa on February 14, 2007, 12:38:23 PM
Yes I have had the chance. The unit was not mine to dig around in but if it was wired up the way I think it was they are wired up the same way a standard VOX wah is. Maybe someone can elaborate, or provide the switching layout of the original?

http://www.generalguitargadgets.com/diagrams/wah_847_lo_orig.gif (http://www.generalguitargadgets.com/diagrams/wah_847_lo_orig.gif)

I would factor it not being true bypass into the whole "Jimi Tone" mojo. I would do the same with all the pieces of the puzzle (Wah, Fuzz Face, Uni-Vibe). I also think that if that photo is correct the input of the Fuzz Face was moved over to the other side to be more practical with his pedal setup (not a hard mod).
Title: Re: Roger Mayer Octavia Octavio
Post by: tcobretti on February 14, 2007, 04:55:21 PM
Sorry for the confusion, but my question was how you wired the Octavia's switch to make the Octavia act as a buffer.  So, are you saying the Octavia's switch was wired like a Vox wah?
Title: Re: Roger Mayer Octavia Octavio
Post by: puretube on February 14, 2007, 04:58:11 PM
where`s the popcorn?   :icon_mrgreen:

(i`m with Roger, btw...)
Title: Re: Roger Mayer Octavia Octavio
Post by: vanessa on February 14, 2007, 05:25:39 PM
Sorry for the confusion, but my question was how you wired the Octavia's switch to make the Octavia act as a buffer.  So, are you saying the Octavia's switch was wired like a Vox wah?

What I should say is that I believe them to have been wired for normal (non-true) bypass (just like most effects were wired back in the day before everyone got obsessed with true bypass). The unit I had a chance to play was not my own and I believe to have been stock. I did a search today and found a few gut photos of the Tycobrahe's version and even though it looks like they used the Carling x-wing switches they seem to have been wired for normal (non-true) bypass. This seems to jive with what I heard. If the unit was off there would still have been a load in the signal path between the wah and the fuzz face. This may have gave some tone sucking, but my guess it was also a beneficial impedance match to gain back the wah sweep when the fuzz face was on.
Title: Re: Roger Mayer Octavia Octavio
Post by: Skreddy on February 14, 2007, 06:47:46 PM
That would actually hurt rather than help, I'm afraid.  Someone may or may not have added a buffer to the output of a Jimi wah.  Seems doubtful, but other than that theory I can't explain the deep wah sweep Jimi got unless he used wah after fuzz, which goes against what all the Jimi nazis insist upon.  :icon_evil: ::)
Title: Re: Roger Mayer Octavia Octavio
Post by: vanessa on February 14, 2007, 07:33:08 PM
That would actually hurt rather than help, I'm afraid.  Someone may or may not have added a buffer to the output of a Jimi wah.  Seems doubtful, but other than that theory I can't explain the deep wah sweep Jimi got unless he used wah after fuzz, which goes against what all the Jimi nazis insist upon.  :icon_evil: ::)

I was able to get a normal deep wah sweep with the Tycobrahe on and off ran into a Fuzz Face, go figure. I took special note of it. I'll have to build a Tycobrahe clone and see if I come up with the same results. I will also have to test both true and non-true bypass just to see.
Title: Re: Roger Mayer Octavia Octavio
Post by: Pedal love on February 17, 2007, 09:47:34 AM
 

Hollywood Pedal Pictures proudly presents:  Jimi live on stage together with wedged Octavio !

(http://analogguru.an.funpic.de/pictures/RM_Octavio_Hendrix.gif)

If not to confuse the issue even more, now I'm told by a good source,
there was a second wedge shaped box in there, apart from the fuzz
face the only other fuzz. It was very close to the Axis Fuzz in design.
So as Analogguru might put it, there are two rip offs of a Helios circuit,
in Jimi's BOG signal chain. :icon_wink:
Title: Re: Roger Mayer Octavia Octavio
Post by: petemoore on February 17, 2007, 10:48:15 AM
  It is my belief that these bits of info, and the sound they produce are 'partials'...ie only part of what is in those boxes is actually known.
  Just a FF won't distort as hard as what I think I'm hearing.
  The Wah/FF, as shown gets loaded down by the FF, and doesn't work at all like what I think I'm hearing.
  Using what is shown in schematic form, and doing some of my own clone mods...gets 'it' alot closer to what I think I'm hearing.
  I don't know but suspect the schematics show 'most' but not 'all' of 'what was what, and when'.
  IMO...'what is the value of adding a transistor here or there in the 'JiaB' type setup?' [very useful, of great value...ie don't work right 'without'].
  'And how hard is it to do that?' [pretty darn easy].
  "Do you think the tweekers of the day noted and published every components value and placement in the form of schematic which provided the complete picture, a 'moving picture' [if you will..these things changed, I can envision RM whacking stuff together on a dialy/weekly basis, not noting every change and publishing it...kinda like I do...tweek here..tweek there...ahhh...much better]...seems bindingly logical in my estimation that the chain in question had alot of attention paid to it, but that every actual mod or addition mayer may not have been published'.
Title: Re: Roger Mayer Octavia Octavio
Post by: joegagan on February 17, 2007, 10:06:20 PM
+1 on the popcorn

BUt what the hell is all this about?

it seems to me that all this pseudo-science about some pedals played almost 40 years ago is silly for the following reasons:

- as some people have mentioned - jimi's pedals could have been and probably were hacked and rehacked weekly if not daily by numerous techs. pedals broke, got lost, jimi wanted to try for new sounds etc etc
as such, conjecture about order of pedals, possible buffers, amounts of gain , extremeness of wah etc are all moot 40 yrs after the fact

- sure , it was all great tone, but SO MUCh of it was in jimi's hands and his soul. how do you recreate or quantify that? you don't.

bottom line - the number of variables that are no longer verifiable is so large that all of this is like building a house of cards on quicksand right before a hurricane AND an 8.5 earhtquake.

I respect Roger's right to claim anything - he was there.
if Dunlop wants to make a pedal that the Hendrix geeks will buy i guess they will just go ahead and do that, won't they?
Title: Re: Roger Mayer Octavia Octavio
Post by: petemoore on February 17, 2007, 11:50:37 PM
  I see no reason why 'they' weren't faced with the same problems we face, and find ways to get that rig purring, somehow. 
  With the N/T bypass items and coiled cables, signal loading had to be an issue, whether identified, discussed and adressed or not, well, the recordings [most of the time] certainly don't sound to me like crap signal delivery, sounds to me like the rig-chain really got figured out.
Title: Re: Roger Mayer Octavia Octavio
Post by: analogguru on February 18, 2007, 05:59:53 AM
@leonhendrix
the photo is in this area so porr and scratched that the wiring of the fuzz-face can be wrong - i didīnt care about that, caus itīs not important for my question and concerns.

@tcobretti,  @vanessa
thanks for your answers and sorry about my poor english.

@joegagan
I am 100% with your opinion - Jimi would even sound good with the worst equipment.  And another guitarists may have the best equipment and will sound horrable.

So i donīt care about impedances.  Maybe I couldnīt ask my question coorect, so I will try it again.

As I said before, I am a technician not a guitar player.  Long time ago my Hair was longer and I was trying to play keyboards in a band - not with much success (the big names sound different to mine).

In a synthesizer you have a signal source (VCO) with waveform selector, after the signal source comes a filter (VCF), maybe a resonance filter and after that comes a volume control (VCA).  The VCo can create different waveforms (Sawtooth, Triangle, SquareWave, PWM,  Sine).  Every of this waveforms has a different amount of overtones (hermonics).

So here we a guitar, as you plug the quitar you get a signal with a limited amount of harmonics, changing as the signal decays.  If you feed this to a fuzz-face the output will be most of the time a square-wave. if you look the signal on an oscilloskope you will notice, that (depending on the input level) the duty-cycle varies what will have an effect on the harmonics - but it is still a square wave most of the time, (which sounds horrable).

So in this time most of the amplifiers were assembled with tubes and the fuzz-face was in principle was used as an amplifier to overdrive the input-stage (this makes the sound not so ugly).

We have here - without any doubt - the following configuration:
A signal source: the guitar(VCO), a  filter: the Wah (VCF) and after that we have the "waveform selector": Octavio or Fuzz-Face which should normally be part of the VCO to obtain the most sound flexibility.

In a sythesizer we have also an envelope follower and an ADSR-Generator.  An envelope follower you will also find in every auto-wah.  So in an auto wah, I see a reason why the auto-wah would be placed in front of a fuzz-face or octavia.  You need the original envelope of the guitar to obtain the auto-wah-effect.  If you would place the auto-wah after the fuzz-face (switched on) the effect would be poor.

Hey, did I listen now, that there will be presented a hand-painted "Insert-Wah" (to insert a Fuzz in the signal path) in Franfurt-trade-show ?  :icon_biggrin:
Be careful, this is "MY INTELLECTUAL PROPERTY AND COPYRIGHT"  :icon_mrgreen:
Also that you can insert a delay in the signal path of an auto-wah. ::)

But here we donīt have an auto-wah....

So my question is:
Why was the "filter" (Wah) not used after the "waveform-selector" (Octavio/FuzzFace) ?

This time, did nobody use a wah on a distorted signal ?
In the shown configuration this would be impossible....

analogguru

Title: Re: Roger Mayer Octavia Octavio
Post by: George Giblet on February 18, 2007, 06:20:07 AM
>Long time ago my Hair was longer and I was trying to play keyboards in a band

LOL!
Title: Re: Roger Mayer Octavia Octavio
Post by: analogguru on February 18, 2007, 06:46:23 AM
@George Giblet

okay, okay.... I shouldnīt have mentioned this on that place here....

But to correct my bad behaviour here is one very important tip for guitarists on tour:

Everytime when you setup your equipment for a gig, control very carefully, that there is NEVER a cable connected to the remote-jack for the hold-function of your delay....

And if you see a cable there, carefully control the path of the cable....and make sure that at the end of the cable is not a footswitch, which is located near the keyboards....

because this can cause really annoying horrable nearly traumatic results.....when you begin your solo, and the keyboarder of your band - unintentionally - accidently touches the footswitch...

George, do you remember those times, when we were young and stupid ? LOL!
now we are only stupid...  :icon_cry:

analogguru
Title: Re: Roger Mayer Octavia Octavio
Post by: George Giblet on February 18, 2007, 06:49:42 AM
>LOL!

LOL Indeed!
Title: Re: Roger Mayer Octavia Octavio
Post by: Pedal love on February 18, 2007, 06:51:46 AM
   Long time ago my Hair was longer and I was trying to play keyboards in a band -

With two helios circuits in the signal path.  :icon_wink:
Title: Re: Roger Mayer Octavia Octavio
Post by: analogguru on February 18, 2007, 06:57:33 AM
@Pedal Love

yeah, stereo already existed in this time, but the Helios was a very young child....



Title: Re: Roger Mayer Octavia Octavio
Post by: MartyMart on February 18, 2007, 07:06:10 AM
wrong topic edit !!
Title: Re: Roger Mayer Octavia Octavio
Post by: Pedal love on February 18, 2007, 07:16:50 AM
Marty, Roger did a lot of copying of existing circuits. He will attest to that. Listen, his only thing is trying to go in and simply and without adding a lot of stuff, get a good gain and tone at decent noise levels. Thats all he really concentrated on since he came to pedal making.  I don't know much about the man personally although, he has seemed to be reasonable, but this is really his nitch as a boutique designer.pl
Title: Re: Roger Mayer Octavia Octavio
Post by: petemoore on February 18, 2007, 07:45:22 AM
Listen, his only thing is trying to go in, and simply and without adding a lot of stuff, get a good gain and tone at decent noise levels.
  A commendable-recommendable approach to take for the starter offers, and for the final, more experienced tweeke'.
  "Where good stuff was once pulled out of a thicket...that's where the well paved road is now".  .PM 07.
Title: Re: Roger Mayer Octavia Octavio
Post by: johnabraham on December 25, 2010, 04:08:45 PM
Edit
Title: Re: Roger Mayer Octavia Octavio
Post by: johnabraham on December 25, 2010, 04:09:24 PM
edit