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Fairchild 670...Reborn!! Dynamics Processors (HW)
Old 2nd April 2013
  #31
Drip 660 PCB

Quote:
Originally Posted by nickelironsteel View Post
whats the advantage of this lets say to a DRIP 670?
Hi,

Well, Here is what I found a few years ago:
1)
I contacted SOWTER transformers when I realised that the replicas do not even have the right ratios, and they said to me that they didn't know and didn't have any spec for them!!!
I was gutted, and if you look online, it's still all wrong, I don't understand?

2)
A friend of mine brought me the Drip PCB one day and asked me if would make a FAIRCHILD for him...
I just laughed when I opened the box and saw the size of the PCB !!!
You probably need an eight or ten U rack to mount this one vertically!
... Or a one meter deep Rack if mounted horizontally, plus the connections at the back!!!???I just don't get it?
Are people supposed to have a nice PCB on their worktops in the studio with no case?... Someone is going to get hurt! ahahah!
Old 2nd April 2013
  #32
Lives for gear
 
Ward Pike's Avatar
Hey POM, I hope you aren't put off by being challenged. Most of us are gleefully looking on and you're getting challenged from legitimate engineers with curious minds!

Good on ya for making another piece of fantastic recording equipment available to us masses.

Best regards,

Ward
Old 2nd April 2013
  #33
Lives for gear
 
vernier's Avatar
Yep, that thing looks dang cool.
.
.
.
Old 2nd April 2013
  #34
Lives for gear
 

From my somewhat limited experience with a few real Fairchilds, an EAR, and very limited time spent with the UTA UnFairchild, I can only add that they're all pretty spectacular, and do something similar. The UnFairchild is my most recent experience with that type of compressor, and so is the freshest in my mind; and all I can say is wow.
Old 2nd April 2013
  #35
Gear Nut
 

Hi POM,

I know you don't sell single parts for the compressor, but can you please tell me where to get those original looking knobs for the Fairchild ?
Old 2nd April 2013
  #36
I love the mid range filter option, feeding only mids to the compression detector circuit. I do this sometimes on my final 2-bus with a multiband rather than boosting low and high's (but lets not lie, i still boost after the fact). Im a slut.
Old 8th April 2013
  #37
FAIRCHILD 670 mkII - POM AUDIO DESIGN -

Quote:
Originally Posted by petermiles View Post
Haha, a band I've worked with loads are in your studio right now. I saw one of them post a photo of a fairchild re-issue and I was like "what is that compressor, doesn't look like any fairchild I've seen before"!

HI,

I have just added some pictures and informations on my website this morning, to give more information of what I do in my FAIRCHILD re-make:

http://www.fairchild-recording-equipment.com/index.html

I hope this will help.
Old 8th April 2013
  #38
Lives for gear
 
Ribbonmicguy's Avatar
Congrats Pierre! Looking forward to hearing it one day
Old 8th April 2013
  #39
Quote:
Originally Posted by MarkusSamper View Post
Hi POM,

I know you don't sell single parts for the compressor, but can you please tell me where to get those original looking knobs for the Fairchild ?
Hi,

I make them!
I pot them one by one, drill them, tap them for the grub screws...
Everything about making this machine takes days, and it's all expensive material, especially when it goes wrong!

Still, I'd rather make one Fairchild per month than a thousand low quality piece of equipment!

Cheers,
Old 9th April 2013
  #40
Not vintage? Burn it.
 
Alex Breaux's Avatar
 

Can somebody post some tracks with this thing in action?? I'm very interested!!
Old 9th April 2013
  #41
Moderator
 
James Lugo's Avatar
 

Quote:
Originally Posted by Kore View Post
Hey Guys,

Very excited to take delivery of a brand new Fairchild 670 remake. The unit was designed and built for us by Pierre Oliver Margerand of Pom Audio design. We are calling it the Mark II.

The idea was to take the classic 670 sound and add some modern designs to make it more versatile. All tubes are jj electronic 6386 remakes, with a utc input transformer, plus a specially commissioned direct copy of the original output transformer. The new mods we have added to the design include:

- True Bypass.

- Low frequency sidechain filtering at 90 and 180 hz, plus a smiley face curve, which only allows the midrange frequencies to trigger compression.

-Parallel mix control to blend the wet / dry signals. These appear as seperate outputs on the rear of the unit, so that you can choose to use the original output circuitry if you want to be really purist!

The result is a monster compressor, with all the spirit of an original, plus an amazing range of tweakable options. We've only had it a day but its already clear that this thing is very special. A combination of sidechain filtering, plus dialing back in some uncompressed signal, gave a sound on a pair of drum room mics unlike anything I've heard before. Its already straight into action for a vocal session today, but once the studios get quieter I'll try and get some files up for people to check out.

Enjoy the below pics

G.
Kore Recording Studios, London, UK.
Welcome to Kore Studios, recording studio, West London
He custom built me a Ridge Farm Boiler with the works, distortion function and 95hz side chain. Like the mods Baressi and Brauer have, the unit is amazing. Congrats on the 670. Man you guys must be dying over there.
Old 25th April 2013
  #42
Gear Nut
 

Exactly how many tubes does regular use chew?? I'm presuming it's the 6386's that go? I have heard about every 6 months but does this mean a single tube every 6 months or a necessity to re-tube every 6 months? The latter would mean some fairly outrageous maintenance costs. I've searched for this a bit but can't find a straight answer or even a ball park. Also, IIRC DRIP has released a second version of the board which can be mounted vertically in a 2U case.
Old 26th April 2013
  #43
Gear Nut
 

Sorry, obviously not 2U but definitely vertically mounted like the original.

Anyone know about the tube usage question above? I can build a Drip for around the same price as an anamod. Would rather the original circuit but if maintenance is a significant extra cost might be the determining factor.
Old 27th April 2013
  #44
Gear Addict
 
Delphino's Avatar
 

Kore, one more soul here that would very much appreciate some files

Very drawn to this machine...
Old 27th April 2013
  #45
Lives for gear
 

Quote:
Originally Posted by mickdundee63 View Post
Exactly how many tubes does regular use chew?? I'm presuming it's the 6386's that go? I have heard about every 6 months but does this mean a single tube every 6 months or a necessity to re-tube every 6 months? The latter would mean some fairly outrageous maintenance costs. I've searched for this a bit but can't find a straight answer or even a ball park. Also, IIRC DRIP has released a second version of the board which can be mounted vertically in a 2U case.
Old 6386 tubes made 30+ years ago will fail much faster than new ones. Additionally parameters are all over the place. New tubes have a life expectance between 2k and 10k hrs of useage. Of course it´s still tubes which have more variance in all parameters than solid state devices. But JJ, the manufacturer has enough expierience to get their sh*t together and make a reliable product. At least you pay premium $$$ for a tube which is supposed to be handselected. Their datasheet says 3dB variance between both triodes in a tube. That´s a pretty ok spec.
Old 27th April 2013
  #46
Lives for gear
 
Piedpiper's Avatar
Quote:
Originally Posted by jensenmann View Post
Old 6386 tubes made 30+ years ago will fail much faster than new ones.
This is the first time I've heard that... IME older tubes are typically much better in every parameter including longevity, though I have no experience with 6386 tubes in this regard. How do you know this?
Old 27th April 2013
  #47
Gear maniac
 
Mike Green's Avatar
 

carnhill trannies?
Old 9th September 2013
  #48
Gear Maniac
 
Johanz's Avatar
 

Do you have some wav's as samples? Would love to hear it.
Old 9th September 2013
  #49
Lives for gear
 
herecomesyourman's Avatar
Quote:
Originally Posted by Kore View Post
Hey Guys,

Very excited to take delivery of a brand new Fairchild 670 remake. The unit was designed and built for us by Pierre Oliver Margerand of Pom Audio design. We are calling it the Mark II.

The idea was to take the classic 670 sound and add some modern designs to make it more versatile. All tubes are jj electronic 6386 remakes, with a utc input transformer, plus a specially commissioned direct copy of the original output transformer. The new mods we have added to the design include:

- True Bypass.

- Low frequency sidechain filtering at 90 and 180 hz, plus a smiley face curve, which only allows the midrange frequencies to trigger compression.

-Parallel mix control to blend the wet / dry signals. These appear as seperate outputs on the rear of the unit, so that you can choose to use the original output circuitry if you want to be really purist!

The result is a monster compressor, with all the spirit of an original, plus an amazing range of tweakable options. We've only had it a day but its already clear that this thing is very special. A combination of sidechain filtering, plus dialing back in some uncompressed signal, gave a sound on a pair of drum room mics unlike anything I've heard before. Its already straight into action for a vocal session today, but once the studios get quieter I'll try and get some files up for people to check out.

Enjoy the below pics

G.
Kore Recording Studios, London, UK.
Welcome to Kore Studios, recording studio, West London
From the picture of the guts I see that the tubes are laid out in a more logical fashion so that the top channel won't be cooked by the bottom channel when it's left on? It looks seriously great! Also I read your reply to Fletcher on replacing the need for all 20 valves in the original with new components which essentially do the same job. (That would make more room to breathe instead of cook.) From what I understand about the originals the top channel would get a lot hotter overtime causing wear and tear on that channel.

I think it's a good thing to try to get as close as possible to the original sound without compromise there...and at the same time try to get a more efficient unit which will age better out of pursing a changed design.
Old 9th September 2013
  #50
Lives for gear
 
jinksdingo's Avatar
NICE
Old 9th September 2013
  #51
the only good thing it's for is to be the base of a fruit basket.

It looks so great. For a Fairchild build, they aren't too much money. IMO.

Where are those mp3s of this baby in action???
Old 9th September 2013
  #52
Gear Maniac
 
Johanz's Avatar
 

wav
Old 9th September 2013
  #53
Lives for gear
 
ben_allison's Avatar
Quote:
Originally Posted by POM AUDIO DESIGN View Post
I make them!
I pot them one by one, drill them, tap them for the grub screws...
Whoa whoa whoa. You MAKE them?!

Insanity. Do you whip batches of your own bakelite and pour them into a mold? I'd love to see pics of the process!
Old 9th September 2013
  #54
Quote:
Originally Posted by Johanz View Post
wav
My bad. Frantic "at work" post without thought. I just want to hear it!
Old 10th September 2013
  #55
Gear Maniac
 
Tal Black's Avatar
 

Porn?

Through my astigmatisim 'Pom Audio Design' looks like Porn Audio Design. Thought it was one hell of a good name...
Old 11th September 2013
  #56
Making knobs

Quote:
Originally Posted by ben_allison View Post
Whoa whoa whoa. You MAKE them?!

Insanity. Do you whip batches of your own bakelite and pour them into a mold? I'd love to see pics of the process!
Hi,

Yes, I make them!

I do not use bakelite(I am not sure that it is allowed these days!...) But some modern compound...
It's crazy, it takes a lot of time, not to mention the drilling and threading for the two grub crews holes
to get a good grip on the spindles of the switches and Pots...
You can see some on my website :

http://www.fairchild-recording-equip...ILD670mkI.html

It usually takes me about a day of work to make enough for a compressor or two, thank God I only make a couple
of Fairchild every year!

I hope this helps...
POM
Old 1st October 2013
  #57
Gear Addict
 
nOiz's Avatar
Hi POM,

Quick question...are you using Carnhills transformer on your remake? I seem to notice the "RED" Carnhills on one of the picture...
Old 1st October 2013
  #58
Lives for gear
 
NeoHippy's Avatar
 

Niceeeee!!!!!!!!!!

cant wait to hear audio samples!!!!!!!!!!!!!

cheers
Old 2nd October 2013
  #59
Lives for gear
 
gyraf's Avatar
Quote:
Originally Posted by Kore View Post
- The Mk2 uses the same audio path as the original, but it uses a discrete solid state control amp instead of a valve one.
And

Quote:
Originally Posted by Kore View Post
- It uses the same concept as the EAR 660, but the audio path is 100% original.
..a bit confusing: IIRC, the Ear660 uses PCC189 vari-mu tubes in a strange cascode type setup, very very far from the Fairchild's push-pull 6386 setup. Yet this is both? Or neither?

That aside - what a beautiful device! And a very good idea to update it to contemporary functionality instead of clinging to purist classicness.

Jakob E.
Old 3rd October 2013
  #60
Gear Nut
 

I am also very eager to hear this unit. Thread has been up sense April and still no audio? Come on guys
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