IRIAA huh?

This is where record cutters raise questions about cutting, and trade wisdom and experiment results. We love Scully, Neumann, Presto, & Rek-O-Kut lathes and Wilcox-Gay Recordios (among others). We are excited by the various modern pro and semi-pro systems, too, in production and development. We use strange, extinct disc-based dictation machines. And other stuff, too.

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uvoscillator
Posts: 129
Joined: Wed Aug 22, 2012 1:37 am
Location: Russia, St.Petersburg

IRIAA huh?

Post: # 37478Unread post uvoscillator
Thu Sep 24, 2015 8:21 am

Dear list,
Just found this on local market, can it be used for cutting ?
This is unit for testing RIAA circuits.
https://www.avito.ru/moskva/audio_i_video/prodayu_emt_157_inverse_riaa_dlya_fonokorrektorov_529117931

Some info on P.42
http://lcweb2.loc.gov/master/mbrs/recording_preservation/manuals/EMT%20General%20Catalog%20(June%201968).pdf

Thanks !
S
Best !

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mossboss
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Location: Australia.

Re: IRIAA huh?

Post: # 37481Unread post mossboss
Thu Sep 24, 2015 8:50 am

The second link is broken so it's hard to see the specs, however looking at it it seems to be a proper "plug in" so as to provide the reverse RIAA curve which is a requirement for cutting a record since the amplification equipment with a phono input will add the the curve back
It seems to also have a few options, as a guess looks like it was made before the standard curve was adopted by all and sundry
If it is in working order and at a reasonable cost it will be useful for a semi pro use as most cutting lathes do have the inverse curve built in to the system
Best
Chris

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uvoscillator
Posts: 129
Joined: Wed Aug 22, 2012 1:37 am
Location: Russia, St.Petersburg

Re: IRIAA huh?

Post: # 37483Unread post uvoscillator
Thu Sep 24, 2015 9:13 am

mossboss wrote:The second link is broken so it's hard to see the specs, however looking at it it seems to be a proper "plug in" so as to provide the reverse RIAA curve which is a requirement for cutting a record since the amplification equipment with a phono input will add the the curve back
It seems to also have a few options, as a guess looks like it was made before the standard curve was adopted by all and sundry
If it is in working order and at a reasonable cost it will be useful for a semi pro use as most cutting lathes do have the inverse curve built in to the system
Best
thanks for the input !
owner wants crazy 450EUR, but we can have trade though

here is nice booklet with some words on P.42
https://drive.google.com/file/d/0B7-V3HakD41BVThWRFR5blp2aXM/view?usp=sharing

do you think it can handle two channels for stereo IRIAA ?
thanks !
Best !

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dubcutter89
Posts: 359
Joined: Thu Oct 19, 2006 6:30 am
Location: between the grooves..

Re: IRIAA huh?

Post: # 37494Unread post dubcutter89
Thu Sep 24, 2015 5:38 pm

Hi!
Haven't read the brochure, but the only EMT IRIAA thing I know is just a passive unit - 3 resistors and 2 capacitors will do the same...

Lukas
Wanted: ANYTHING ORTOFON related to cutting...thx

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uvoscillator
Posts: 129
Joined: Wed Aug 22, 2012 1:37 am
Location: Russia, St.Petersburg

Re: IRIAA huh?

Post: # 37501Unread post uvoscillator
Fri Sep 25, 2015 1:21 am

dubcutter89 wrote:Hi!
Haven't read the brochure, but the only EMT IRIAA thing I know is just a passive unit - 3 resistors and 2 capacitors will do the same...

Lukas
thanks Lucas, expensive resistors though ))
Best !

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dubcutter89
Posts: 359
Joined: Thu Oct 19, 2006 6:30 am
Location: between the grooves..

Re: IRIAA huh?

Post: # 37508Unread post dubcutter89
Fri Sep 25, 2015 6:31 am

Yup, resistors and caps seem to be quiet expensive these days:

http://lathetrolls.com/viewtopic.php?f=4&t=5875&hilit=riaa+passive

60$ for 3 resistors and 2 caps? still too much for me...
Wanted: ANYTHING ORTOFON related to cutting...thx

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