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ARSCLIST  November 2014

ARSCLIST November 2014

Subject:

Re: Recording technology

From:

Aaron Levinson <[log in to unmask]>

Reply-To:

Association for Recorded Sound Discussion List <[log in to unmask]>

Date:

Mon, 17 Nov 2014 23:42:46 -0500

Content-Type:

text/plain

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text/plain (41 lines)

My old tech Jeremy used to say "Iron is the sound of analog..."

AA

Sent from my iPhone

> On Nov 17, 2014, at 10:47 PM, Tom Fine <[log in to unmask]> wrote:
> 
> Hi Paul:
> 
> You could be onto something with transformers. Consider all the transformers in the signal path on a Mercury recording (and there were more with RCA and Decca because they used mixing console with input and output transformers during recording):
> 
> 1. transformers on the microphones' electronics, outputting nominally 150ohms impedence
> 
> 2. transformers in and out on the Pultec MB1 preamps/distribution amps
> 
> 3. transformers matching the line level from the Pultec to the grid of the second stage on the Ampex 350-type electronics (this was common, most pros feeding those things line level bypassed the mic preamp and the attenuate-boost network used for stock line-level balanced inputs)
> 
> On cutting the records:
> 
> 1. transformer ouputs on the 3-track Ampex tape recorders
> 
> 2. transformer inputs and outputs on the Westrex 3-2 mixing board, also transformer split of the center channel and transformer combine of the center with the left and right channels.
> 
> 3. transformer inputs and outputs on the cutting amplifiers, and likely transformers internally on the cutting lathe's RIAA emphasis circuitry
> 
> For Decca, the number of transformers would have been about the same.
> 
> For RCA, they dubbed their 3-tracks to a 2-track cutting master, so add in a generation of tape and also transformers in the dubbing circuit. Same with Columbia.
> 
> Lots of iron in those old records.
> 
> -- Tom Fine
> 
> ----- Original Message ----- From: "Paul Stamler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, November 17, 2014 10:24 PM
> Subject: Re: [ARSCLIST] Recording technology
> 
> 

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