Gas ambrosia owners manual

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gas ambrosia owners manual

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Page 1

AMBROSIA 2000 -ď THE STORY 30 YEARS AGO, IN 1975, OUR DESIGNER JAMES BONGIORNO, UNLEASHED ONTO THE WORLD, THE THAEDRA, FROM GREAT AMERICAN SOUND. AS OF THEN AND EVEN NOW STILL, THIS WORLD CLASS PREAMP HAS BEEN REVERED FOR ITS PERFORMANCE. THERE HAS BEEN NOTHING SINCE, TUBE OR TRANSISTOR, TO EQUAL THE MAJESTY OF THAT PREAMP. AND EVEN THOUGH MANY THOUSANDS OF THEM WERE PRODUCED, YOU RARELY SEE THEM MADE AVAILABLE IN THE USED MARKET. INDEED, THOSE WHO DID PART WITH THEM ARE CRYING SONGS OF REGRET SINCE NOTHING HAS EQUALLED THE THAEDRA. AS OF THAT TIME, THE THAEDRA WAS THE MOST COMPLICATED AND SOPHISTICATED PREAMP THAT THE WORLD HAD EVER SEEN. IT HAD VIRTUALLY EVERY POSSIBLE FEATURE THAT ANY AUDIOPHILE COULD WANT. WHAT TO DO FOR AN ENCORE?????? TODAY, AN AUDIO CONTROL UNIT MUST BE REMOTE CONTROLLED. THIS IS ABSOLUTELY MANDATORY. HOWEVER, AS MOST PEOPLE KNOW, MOST REMOTE CONTROL CONCEPTS INVOLVE A GAZILLION BUTTONS, ETC., WHICH ARE A ROYAL PAIN. WE ENDEAVORED TO MAKE A UNIT THAT WAS SO SIMPLE THAT A CHILD COULD OPERATE IT (ALTHOUGH WE DO NOT RECOMMEND THAT CHILDREN RUN YOUR AUDIO SYSTEM). THE AMBROSIA IS COMPLETELY MENU DRIVEN AND THE REMOTE IS A CARBON COPY OF THE FRONT PANEL OF THE UNIT. THIS WAY, THERE CAN BE ABSOLUTELY NO CONFUSION IN ITS OPERATION OR FUNCTIONALITY. YOU MIGHT SAY THAT THE AMBROSIA IS COMPLETELY PROGRAMMABLE. IN ADDITION, SAVE FOR THE MAIN (HEAVY DUTY SEALED, 8 AMPERE) OUTPUT RELAYS, THERE ARE ABSOLUTELY NO MECHANICAL PARTS WHATSOEVER. EVERYTHING IS CONTROLLED ELECTRONICALLY. HOWEVER , EVEN THOUGH THE AMBROSIA IS FULLY DIGITALLY CONTROLLED, THERE ARE NO DIGITAL CIRCUITS OR DIGITAL PROCESSING IN THE SIGNAL PATH. THE SIGNAL PATH IS STILL ALL 100% ANALOG. ALL FUNCTIONS ARE CONTROLLED BY A SET OF 11 VERY EXOTIC ANALOG SWITCHES THAT ARE DIGITALLY CONTROLLED. IN ADDITION, THE VOLUME CONTROL IS ALSO MADE UP OF ANALOG SWITCHES WHICH ARE DIGITALLY CONTROLLED. THE FUNCTIONAL OPERATIONAL STATE IS DISPLAYED ON A READOUT ON THE FRONT PANEL. ALL FUNCTIONS ARE ACCESSED VIA FIVE TACT SWITCHES IN CONJUNCTION WITH A TRUE OPTICAL SHAFT ENCODER (THE ENCODER ON THE REMOTE IS A MECHANICAL UNIT IN ORDER TO SAVE BATTERY POWER). FINALLY, THERE ARE A PAIR OF POWERED HEADPHONE JACKS ON THE FRONT PANEL WHICH CAN PUT OUT HUNDREDS OF MILLIWATTS INTO EVEN THE LOWEST IMPEDANCE HEADPHONES. 2 15 MC Noise Spectrum 2 Line Amp THDN 2V Out 2 MC RIAA Error 2 MC RIAA Error 3 MM RIAA Error 2 MM THDN 2V Out 2

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Line Amp Response 2 14 3 THE FEATURES OF THE AMBROSIA ARE AS FOLLOWS. 11. ULTRA LOW EMISSION POWER TRANSFORMER MOUNTED IN ITS OWN CAN. IT HAS FOUR SECONDARY SETS OF WINDINGS WHICH ARE USED TO POWER EACH SECTION OF THE CIRCUITS TOTALLY INDEPENDENTLY WHICH ABSOLUTELY ELIMINATES A POSSIBILTY OF GROUND LOOPS OR POWER SUPPLY NOISE. 12. IN ADDITION THERE ARE 15 INDEPENDENT POWER SUPPLY REGULATORS FOR ABSOLUTE IMMUNITY. 13. AS IN THE ORIGINAL THAEDRA THERE ARE COMPLETELY SEPARATE CIRCUITS FOR BOTH THE MOVING COIL AND THE MOVING MAGNET CARTRIDGE SOURCES, BOTH OF THEM RIAA EQUALIZED. 14. IN ADDITION, EACH CIRCUIT, THAT IS BOTH MC AND MM, HAS ITS OWN SET OF DIRECT OUTPUTS WHICH BYPASSES ALL OF THE INTERNAL SWITCHING. 15. IN ADDITION, EACH CIRCUIT HAS ITS OWN SWITCHABLE AND DEDICATED LOW CUT (APPROXIMATELY 20HZ) FILTER WHICH IS A QUASI 4 TH ORDER PHASE EQUALIZED NETWORK. 16. THERE ARE SEVEN (7) SETS OF INPUTS (PLUS TWO SETS OF TAPE INPUTS AND OUTPUTS) TWO OF WHICH SHARE THE SAME INPUT JACK I.E. AN XLR COMBO JACK FOR BALANCED WITH A PAIR OF GOLD PLATED PHONE TO PHONO PLUGS FOR AN ADDITIONAL UNBALANCED INPUT. (SUPPLIED) 17. THERE ARE A PAIR OF HEADPHONE JACKS ON THE FRONT PANEL WHICH ARE POWERED BY A VERY UNIQUE BALANCED POWER BUFFER IDLING AT 4.5 WATTS PER CHANNEL. 18. THE LINE AMPLIFIER IS FULLY BALANCED WITH AN EXTREMELY EXOTIC CIRCUIT THAT HAS ESSENTIALLY ZERO DISTORTION. AS A MATTER OF FACT, ALL OF THE DISTORTION PRODUCTS IN THE AMBROSIA FROM THE HIGH LEVEL INPUTS ONWARD COME SPECIFICALLY AND ONLY FROM THE PASSIVE SWITCHES AND VOLUME CONTROL. THESE DISTORTION PRODUCTS ARE OF THE -úPASSIVE-Ě VARIETY WHICH ARE VIRTUALLY INAUDIBLE AS COMPARED TO THE MORE NORMAL DYNAMIC DISTORTIONS THAT ARE CREATED BY THE CIRCUITS. 19. THE LINE AMPLIFIER ALSO HAS COMPLETE TONE CONTROLS, BASS AND TREBLE (WITH FOUR SELECTABLE INFLECTION POINTS FOR EACH) THAT VIRTUALLY NO HIGH END PREAMP HAS TODAY. THERE IS NO SUCH THING AS A FLAT ROOM . 10. THE ENTIRE PREAMP METAL PACKAGE (WITH THE EXCEPTION OF THE FRONT PANEL) IS MADE OF 14 Ga. STEEL AND THE UNIT WEIGHS IN AT A HEFTY 50 LBS. ALL METAL SURFACES INCLUDING THE FRONT PANEL ARE POWDER COATED. 11. THE DISPLAY READOUT HAS LARGE NUMERALS WHICH CAN BE READ EASILY FROM ACROSS THE ROOM. 12. THE REMOTE CONTROL IS MADE OUT OF A SOLID MILLED OUT PIECE OF ALUMINUM (NOT A CHEAP PIECE OF PLASTIC). JB_Quasi_2nd_Order_Low_Cut_MM,_MC 20Hz May 25, 2006 12:02:00 Traces: io3, AC Analysis Frequency (Hz) 1 10 100 Magnitude 100¬Ķ 1m 10m 100m 1 10 MM-MC LO FILTER MM-Noise Spectrum 2 MC RIAA 2 Tone Controls 2