OWNER'S MANUAL Archival Playback Equalizer Archival Phono Preamplifier Millennia Music & Media Systems LOC Millennia Media & Music Systems
READ THIS FIRST! SAFETY PRECAUTIONS Any changes or modifications not expressly approved by MILLENNIA MEDIA, INC. could void your authority to operate this equipment under the EC or FCC rules. For your safety and the safety of others, be sure to read and understand all safety and operational instructions before attempting to use the LOC. WARNING: The LOC internal circuitry carries lethal voltages.
QUICK START INTRODUCTION READ THIS!! For your protection, never under any circumstances remove the top cover. Refer to a qualified electronics technician any and all servicing and other operations which require the top cover to be removed.
PUSH PUSH UNBAL (1) Inputs: Bal Phono Input 1 Conventional 3-pin female XLR input connectors for use with differential-balanced phono cartridges. Can also be used with certain line-level sources. Standard input load resistance is 47,000 ohms. This resistance ( R1 and R2 on each phono preamp PCB) can be changed by the user to facilitate different phono cartridge load requirements. See phono preamp PCB illustration on page 11. Standard input load capacitance is 470 pF.
LOC FRONT PANEL (1) MONO SELECT SWITCH "MONO (L+R)" Pushbutton switch (German ITT) which combines left and right inputs into a summed mono signal. When this switch is depressed and illuminated, left and right input signals are combined into a single mono signal on both left and right compensation and filter paths. (2) POLARITY REVERSE SWITCH "POL REV" Pushbutton switch (German ITT) which, when depressed and illuminated, reverses the polarity (180 degree inversion) of the right channel input signal.
11 10 LOC Phono Preamp - User Selectable Components (8) BAND IN/OUT SWITCH "IN" Pushbutton switch which places its associated EQ band in circuit or out of circuit. There are eight bands of equalization on the LOC Analog Legacy. Four bands provide precise phono compensation, including RIAA and an unlimited number of legacy curves. Four additional bands (marked "FILTER") provide additional sculpting and repair tools.
13 12 User Low C14 User High C8 LOC Compensation — User Selectable Components Millennia Media & Music Systems LOC Input Transformer Board LOC Millennia Media & Music Systems
15 14 LEGACY RECORDINGS The 78 RPM record was a standard format for decades, followed by 33-1/3 RPM. While 33 RPM “LP” records produced after 1954 almost universally follow the EMI or RIAA standards, compensation curves used for 78 RPM records varied significantly between manufacturers and era. Via historical research and empirical testing, audio engineers have attempted to classify the myriad of legacy equalization formats.
17 16 SOURCE SERIES TURNOVER (Hz) ROLLOFF (dB @ 10 kHz) London up to LL846 500 or 750 -10.5 London FFRR 1949- 250 or 280 -5 Lyrichord early 400 or COL* -16 newer 629 -16 Mercury thru 10/54 400 -12 MGM 500 0 or -12 Montilla 500 -12 Musicraft 750 -14 “NAB” standard 500 -16 New Records 750 -16 Nocturne 400 -12 Oceanic COL* or 750 -16 Odeon early electricals 700 0 Odeon pre-1947 300 -8.
19 18 Millennia Media & Music Systems LOC LOC Millennia Media & Music Systems
21 20 PREAMP & SYSTEM SPECIFICATIONS WARRANTY ITHD + Noise, 20 Hz - 30 kHz Frequency Response -3 dB points Frequency Response, +/- 0.5 dB Maximum Input Level Maximum Output Level Maximum System Gain Input Impedance Output Impedance Noise Three-pin XLR Polarity Millennia Media will repair this product, free of charge, in the USA, in the event of defect of materials or workmanship for one (1) year following date of purchase.
