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y. y . y, y. -t'. _ ■> -j _ ■(-_ ■p, *v'. -j- : •. • (. > • .) ~ “ jP - 3, i S' - J _‘i" 1 $*'} ** ~ i-JiJ “* /V 'ff t. ^>'.j fo. | ***. ^ . ft i1' ' t1’ t’*> 1 fl\ ■;/>' jtv "ijf. I_(l' “)■)> ~:ty- ".‘<7) VV. ~f *ÿl‘ f_ “P.'i-t ilt **$ .-H “tf? "iï' 4ï j "i—-* ■- >3 : i_ji ‘■’3 C> 'Cj**f 1>* '£:>«rZ>* "1_h r1 y*c^jr'r*j3r:3“ r.ür*3¿grrS-Vr-üi—wi—^ -¡3 -o -a “P -E3 -El “□ -E3 “□ -P “D -□ -E3 !-□ -□ -□ -p -□ |-a i ._:> . ■) ,_■) , -> . ■■■' . ■■-> . •'■» f. •■•' . L ‘ I . '••’ j. '■■' . '■■> , - > <■•■ . >■•' j. . •- . ■■■ , <■■• ( •■■■ . I- . I- ' • , i- ■@| '§' •= ■ ■§ •§ ■= ■= •§ ■§ •— ~ •§ ¡-= j's ~ •— 3 s j:a m !§ lu !s !q !b :□ !□ | ‘Zj j’Z■ 'I’ ‘i: 'Z: ‘I 'I T 'I ~ ;'I “ ''I i~ j'Z 'Z “ “ 'Z l'Z - - - ' ü 1 mm ;î ï -i ;î 1 ï m î :ï:ï 11 ;ï;ï ;ï :î ;i‘; i m ;ï?i;i;ï % FOStGX Æ'. V: •V -*Î" Vt • • INTRODUCTION Thank you very much for purchasing a Fostex Model 820 Recording Mixer. The Model 820 is a 20-input recording mixer with all the necessary functions required for a multitrack recording. The Model 820 has all of the following features: 1. An 8-channel output, providing the perfect combination with an 16-track multitrack recorder. 2. Two Effect Sends (monaural) and an Auxilary Send (stereo), ailowing a variety of sound effect processes possible. 3. The capability to send the AUX signal (while monitoring the recorder output signal) to the Effect Send 2 output, making it possible to, for example, cast a reverberation on this signal and thus simulate the recording environment without tampering with the output signals to the recorder. 4. Two parametric and one shelving equalizers, giving more flexibility to tone control, and, with the use of a solo monk tor function and mute function, the mixing process is! made even more easy. 5. Three stereo Effect Returns, allowing connections to various sound effect processors without sacrificing input channels to accept the output signals from the processors. 6. A DC24V phantom power source, enabling hookup to a high quality condenser microphone. 7. An FL level meter 8. Space for connecting MIDI interfacing for future use with MIDI control. We hope that you thoroughly read this Manual and will utilize the product to its fullest capabilities. With proper use and maintenance, you will enjoy many years of satisfied performance. CAUTION As regards an operating of the Model 820, follow the Model 812 Owner's Manual, after page 5-Guide of Components. SPECIFICATIONS INPUT {x 20) AUX OUTPUT (L/R) (x1) Microphone impedance 600ÎÎ or less Output load impedance 10kfi or more Input impedance 2kli balanced XLR connector Nominal output level -10dBV (0.3V) and 20kfî unbalanced phone Maximum output level +15dBV (5.6V) jack MONITOR OUTPUT (L/R) (x1) Nominal input level Microphone: -60dBV (1mV) Output load impedance 10kfi or more Line: - 10dBV (0.3V) Nominal output level - 10dBV (0.3V) Minimum input level -70dBV (0.3mV) Maximum output level +15dBV (5.6V) Maximum input level +15dBV (5.6V) HEADPHONES OUTPUT (Stereo) TAPE INPUT (x20) Output load impedance 8-500 Input impedance 20kfi Maximum output 80mW Nominal Input level - 10dBV (0.3V) DIRECT OUTPUT (x12) Minimum input level -20dBV (0.1V) Output load Impedance loko or more Maximum input level +15dBV (5.6V) Nominal output level - 10dBV (0.3V) INSERT INPUT (X20) Maximum output level +15dBV (5.6V) Input impedance 20kil FREQUENCY RESPONSE Nominal input level -10dBV (0.3V) Microphone input 20-20kHz +1/-2dB INSERT OUTPUT (X20) Line input 20*-20kHz +1/ — IdB Output load impedance 10kiî or more Monitor output 20-20kHz +1/-3dB Nominal output level -10dBV (0.3V) Headphones output 20-20kHz +1/-2dB Maximum output level +15dBV (5.6V) EQUIVALENT INPUT NOISE -125dBV weighted BUSS INPUT (GROUPx8, EFFECTX2, AUX (UR)x1) OVERALL SIGNAL TO NOISE Input impedance 20kfî 1 mic input 65dB weighted Nominal input level -10dBV (0.3V) 20 mic input 50dB weighted' EFFECT RETURN (L/R) (x3) T.H.D. 0.05% (1kHz, nominal level) Input impedance 7kfi 0.1% (headphones, 1kHz, Nominal input level -10dBV (0.3V) 10mW/50Q) Maximum Input level +25dBV (17.8V) FADER ATTENUATION 70dB (1kHz) GROUP OUTPUT (x8) CROSSTALK 65dB (1kHz) Output load impedance 10kfi or more PARAMETRIC EQUALIZER 60-1kHz ±15dB Nominal output level -10dBV (0.3V) 400-6kHz ±15dB Maximum output level +15dBV (5.6V) 10kHz ±15dB (SHELVING) EFFECT SEND