Page #3
Turnover (FLAT) - Use this setting for most acoustical 78 rpm records and all cylinders.
Tu rnov er (300 H z) - This is used for Columbia brand and manufactured electrical records, London FFRR
78 's, B BC bro ad ca st tr an sc ription s, m an y pre -W W II reco rds & trans criptio ns , ea rly W es tern E lec tric
products.
Turnover (400 Hz))(AES) - Some post-W W II 33's, 45's, 78's using the AES characteristic.
Turnover (500 Hz)(RIAA) - M os t po st-19 35 US 78's, b road ca st tr an sc ription s a nd also fo r O rthoa co us tic
and NAB transcriptions.
Turnover (500 Hz, modified)(Lp) - For early Columbia and some other Lp's.
Tu rnov er (700 H z) - A go od c om prom ise fo r 636 Hz a nd 8 00 H z sug ges ted b y seve ral so urces. U se w ith
so m e early electrica l 78's, s om e 193 1 vinta ge Vic tor Lps, e arly 1950's R CA L ps and E P 4 5's . Als o, it is
useful for impro ving bass on a coustical records, provided there is a sharp rum ble filter.
Rolloff (0dB)(FLAT) - For aco ustical rec ords and all early (pre -193 8) electrica l 78's a nd tra nsc riptions . A
low-pass(scratch) filter is useful in conjunction with this setting.
Rolloff (-5 dB) - This is for a -5 db drop at 10 KHz. Use for some post-1938 78's, FFRR 78's and BBC
transcriptions or to soften noise on early recordings.
Rolloff (-10 dB) - This is for a -10 db drop at 10 KHz. Use for some post-1938 78's, early Lp's such as
London & RC A-Victor.
Rolloff (-12 dB)(AES) - This is used for some post W W II 33's, 45's, and 78's employing the AES
characteristic.
Rolloff (-13.7 dB)(RIAA) - For most modern records.
Rolloff (-16 dB)(NAB) - For early Columbia Lp's and all NAB and Orthoacoustic transcriptions.
REC OM M END ED S ETT INGS (see tables):
These are recomm ended, but not written in stone, for setting the
RE-EQUALIZER
to accurately play back
various records. As documentation of recording curves is difficult to track down, some experimentation
m ay be called for.
Tables for record compensation settings were published in most early hifi magazines (“Dialing You Discs”
in
High Fide lity
) but a re often fa llacious . These turn u p oc cas ionally and m ay be c ons ulted. In
"Conversations With Toscanini," by B. H. Haggin, many subjective suggestions are given for playback of
Toscanini discs.
HINTS ON USE:
One advantage of the
RE-EQUALIZER
is the ability to not only use it on phono records, but on tape
recordings of vintage records made with RIAA equalized preamps. Be careful not to trust all transcription
and record labels. Many pre-W W II radio shows which were recorded with flat highs were re-syndicated
