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Likely, the "LP" setting is AES (400hz turnover, -12dB rolloff)

It's possible that it's the first Columbia LP curve (500hz, -16dB), likely not the FFRR on a US-made 
amp.

-- Tom Fine

----- Original Message ----- 
From: "Roger Kulp" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, April 24, 2012 7:54 PM
Subject: Re: [ARSCLIST] Useful - good starting point for pre-RIAA grooved disk playback


Roger




No this only has two settings "LP" and "RIAA LP"

Roger





________________________________
 From: Tom Fine <[log in to unmask]>
To: [log in to unmask]
Sent: Tuesday, April 24, 2012 5:27 PM
Subject: Re: [ARSCLIST] Useful - good starting point for pre-RIAA grooved disk playback

None of them except the McIntosh and maybe that Heathkit mono preamp have the ability to dial in all 
the pre-RIAA LP curves that were being used. There were at least 10 different curves, if memory 
serves me correctly. I think some of the British higher-end preamps also had the ability to dial in 
many combos of turnover and rolloff.

Typical US preamps and integrated amps of the late mono and early stereo eras had facilities for 
RIAA phono, perhaps a high-impedence tape head (NAB EQ) and usually a way to interally wire another 
phono setting, or on-board AES or 78-era RCA Orthophonic. Usualy a setting for "78" meant 
Orthophonic, although some were AES. RIAA is RCA's New Orthophonic curve, which pretty much all 
record companies switched to starting in 1954 (there were a few outliers, but we're not talking a 
large number of records made after 1955).

-- Tom Fine

----- Original Message ----- From: "Roger Kulp" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, April 24, 2012 5:30 PM
Subject: Re: [ARSCLIST] Useful - good starting point for pre-RIAA grooved disk playback


Did you know some amps/preamps from the late 50s,and ealy 60s have settings for RIAA and pre RIAA 
Lps?

I think my Fisher X-101 does,I need to look.

Roger





________________________________
From: Tom Fine <[log in to unmask]>
To: [log in to unmask]
Sent: Monday, April 23, 2012 8:43 PM
Subject: [ARSCLIST] Useful - good starting point for pre-RIAA grooved disk playback

http://www.mil-media.com/pdf/Millennia%2078%20EQ%20Chart.pdf

note the wise advice repeated twice in this document -- "use your ears as the final reference."

-- Tom Fine

PS -- I've also found this to be a useful starting point:
http://www.shellac.org/wams/wequal.html
it pretty much matches the settings recommended on the McIntosh preamp that had the variable phono 
EQ buttons (forgot the model number)