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Author Topic: The Fairchild Thread  (Read 102715 times)

Dave Amels

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The Fairchild Thread
« on: March 30, 2009, 03:02:49 PM »

 
AnaMod will demonstrate the AM670 Stereo Limiter (www.anamodaudio.com) at the 2009 Frankfurt Music Messe (Hall 5.1, Booth D-94A) in Frankfurt Germany. The AM670 is a stereo 3U rackmount based on the technology of Anamod’s successful AM660 500-series compressor introduced last year.  Both the AM660 and AM670 were created by the AnaMod™ Process. Precise mathematical models were created from the classic 1950s variable-mu 670 limiter. These models were used to synthesize the analog hardware of the AM670.  Like the classic1950s variable-mu 670 limiter, the AM670 duplicates the Lateral / Vertical (mid / side) modes of compression while adding a stereo link function which was not present on original 1950s vacuum tube unit.

AnaMod’s co-founder Greg Gualtieri says, "Having mid / side compression available in a buss limiter will be eye-opening for many engineers.  You’re able to independently control the amount of compression of the center of a mix while not affecting the extreme ends of a stereo mix… and vice-versa.”

Anamod will also be displaying the ATS-1, AM660, and AMEQP at the Musik Messe.  For more information contact Greg Gualtieri or Dave Amels at telephone number (201) 728-8490 or email
info at anamodaudio dot com.


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rankus

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #1 on: March 30, 2009, 03:08:50 PM »

Spam

Moderator says:

This is a press release, yes (was, I edited it down to more of a normal Forum announcement), but from some good guys who are trying to make new and innovative products.

I say we leave it, at least for the time being.

Everyone should be well aware of the advertising component, and be able merely to be informed of the product.

At least, that's my take...

Ross?

Brad?

F?


Posted by Terry

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Rick Welin - Clark Drive Studios http://www.myspace.com/clarkdrivestudios

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MDM,

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #2 on: March 30, 2009, 05:58:00 PM »

model shmodel
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rankus

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #3 on: March 30, 2009, 09:15:09 PM »



Pretty much all of us run companies of one sort or another around here Terry ... If we all started posting such announcements it would be ruinous to this forum.  Why one vendor and not another is my thought.

Whats good for the goose...

Not trying to be confrontational, just putting forth the thought process for my post. (I did give it some thought)

I know they make decent gear and are good folks....

It has been suggested many times (falling on deaf ears I might add) that PSW have a marketplace style forum for folks buying and selling etc.

Another thought is that PSW exists by charging for advertising space (which I'm sure is the reason no buy-n-sell forum)

That one vendor should get free space within the text of the forum itself while others must pay for blurb on the sideline might seem biased to some (paying) advertisers?

Forums are place for the exchange of ideas not commerce. (IMO)


/rant


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Rick Welin - Clark Drive Studios http://www.myspace.com/clarkdrivestudios

Ive done stuff I'm not proud of.. and the stuff I am proud of is disgusting ~ Moe Sizlack

"There is no crisis in energy, the crisis is in imagination" ~ Buckminster Fuller

wwittman

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #4 on: March 30, 2009, 10:12:09 PM »

The original Fairchild 670 isn't "stereo linked" when it's in Left/Right mode????



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William Wittman
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(Cyndi Lauper, Joan Osborne, The Fixx, The Outfield, Hooters...)

phantom309

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #5 on: March 30, 2009, 10:27:51 PM »

Two separate circuits in function in left/right. 60db of separation.
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David T. Kean

phantom309

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #6 on: March 30, 2009, 11:05:02 PM »

rankus wrote on Mon, 30 March 2009 19:15



Pretty much all of us run companies of one sort or another around here Terry ... If we all started posting such announcements it would be ruinous to this forum.  Why one vendor and not another is my thought.

Whats good for the goose...

Not trying to be confrontational, just putting forth the thought process for my post. (I did give it some thought)

I know they make decent gear and are good folks....

It has been suggested many times (falling on deaf ears I might add) that PSW have a marketplace style forum for folks buying and selling etc.

Another thought is that PSW exists by charging for advertising space (which I'm sure is the reason no buy-n-sell forum)

That one vendor should get free space within the text of the forum itself while others must pay for blurb on the sideline might seem biased to some (paying) advertisers?

Forums are place for the exchange of ideas not commerce. (IMO)


/rant





If it's not derailing a thread, if it's from an established member that makes regular contributions to this forum and if the thread actually has some information I can use, it's not SPAM in my book.

It's not like some knob that joins the list just long enough to drop a product blurb in our laps and then leaves.

Yeah, Dave is a good friend and all that, but I sincerely think he deserves to let us know what he's up to as much as any other member of this group. I have NO use for the Anamod, but it's amazing technology, nonetheless.
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mgod

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #7 on: March 30, 2009, 11:11:14 PM »

rankus wrote on Mon, 30 March 2009 18:15

Forums are place for the exchange of ideas not commerce. (IMO)

I agree, advertising is advertising.

If this were presented within a discussion, as in "on that topic here's what we're doing" then it makes sense. As Rick says, many of us have businesses and have done something like that, directed people to our business in the context of the conversation, but this is an ad.

DS
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phantom309

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #8 on: March 30, 2009, 11:48:25 PM »

mgod wrote on Mon, 30 March 2009 21:11

rankus wrote on Mon, 30 March 2009 18:15

Forums are place for the exchange of ideas not commerce. (IMO)

I agree, advertising is advertising.

If this were presented within a discussion, as in "on that topic here's what we're doing" then it makes sense. As Rick says, many of us have businesses and have done something like that, directed people to our business in the context of the conversation, but this is an ad.

DS



Speeding tickets at the Indy 500.
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Those that can't get carried away, should be.
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RMoore

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #9 on: March 31, 2009, 03:38:18 AM »

IMO I don't view the post as constituting spam or being otherwise offensive..


Edit: I can see this point though:

rankus wrote on Tue, 31 March 2009 03:15

 

Another thought is that PSW exists by charging for advertising space (which I'm sure is the reason no buy-n-sell forum)

That one vendor should get free space within the text of the forum itself while others must pay for blurb on the sideline might seem biased to some (paying) advertisers?




And the Indy 500 speeding ticket one..
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Ross Hogarth

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #10 on: March 31, 2009, 03:38:57 AM »

I am caught in a rock and a hard place on this
Dave and Greg are friends and I think they are good people trying to make a go of it, LIKE a lot of the guys on the board
and
advertising is advertising
so
I have to look to Brad and F and ones who are higher on the food chain than me to make this call

It is a fine line here
a slippery slope as it were
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Ross Hogarth

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #11 on: March 31, 2009, 03:40:19 AM »

i recommend that this post be modified to not look like a blatant advertisement
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The practice of forgiveness is our most important contribution to the healing of the world.

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RMoore

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #12 on: March 31, 2009, 03:43:15 AM »

That seems a prefect solution so everyone is happy,

fwiw - I can imagine there is a market for a unit in this price range which can do the 670 thing..


index.php/fa/11834/0/
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Steve Hudson

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #13 on: March 31, 2009, 08:10:13 AM »

RMoore wrote on Tue, 31 March 2009 02:43



fwiw - I can imagine there is a market for a unit in this price range which can do the 670 thing..

index.php/fa/11834/0/


But isn't a "buss limiter" something that makes your breath stink?

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ssltech

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Re: AnaMod to Exhibit Analog Modeled Stereo Limiter
« Reply #14 on: March 31, 2009, 09:49:07 AM »

wwittman wrote on Mon, 30 March 2009 22:12

The original Fairchild 670 isn't "stereo linked" when it's in Left/Right mode????


Looking at the schematic, I'd say not.

It isn't linked in EITHER mode, although when you're in vertical/lateral (which is essentially M/S ) the whole point is that you DON'T want vertical and lateral linked. -You don't want stereo width to be unnecessarily narrowed when the signal gets loud, nor do you want the level to drop if the stereo image gets wide.

The Left-Right/Lat-Vert switch on the Fairchild switches between two distinct modes, in both of them the gain reduction voltage is unlinked. In left-right mode, the two limiters work as two fully-independent mono limiters, each acting on the signal appearing at each discrete input. In lateral-vertical mode, the two limiters work as two fully-independent mono limiters, one acting on the SUM of the two signals, the other acting on the DIFFERENCE between the two discrete inputs. -At no time are the two sidechain rectifier outputs in any way connected.

The easy test to prove the case is to select left-right mode, and put a constant-level tone through one channel, then a loud pulsing signal (eg: kick drum) through the other. Squash the pulsing signal significantly, and then meter the tone. If it doesn't "dip" in reaction to the peaks on the other channel, then the unit performs exactly as the schematic suggests it should. -I recommend performing the test because I've seen more than my fair share of incorrectly-drawn schematics in my time...

Keith
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MDM (maxdimario) wrote on Fri, 16 November 2007 21:36

I have the feeling that I have more experience in my little finger than you do in your whole body about audio electronics..
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