boston massachusetts that you have the best seat in the concert hall how do they do it while the recording music director or any one of the sound engineers could easily explain it all in ten we days home phonograph could not reproduce either pull out passages very popular but they were literally kept off the record right here i found a monitor but it wasn't a b reproduction of the actual performance but as you get with today's high fidelity recording techniques they as it should be the conductor and his musician control all of the dynamics in achieving a natural balance between all instruments and sections of the art this can only be achieved by precise microphone placement and this varies amazingly with the music the particular artist the hall itself even climatic conditions it is never the same from one recording session to another again an easy solution might be bombed here by the arbitrary placement and control of but again it wouldn't be a natural or a reproduction today the engineers record the orchestra as a complete eventually there is a playback that everyone recognizes as a big image they were seeking both artistically and the coast to claim they have a truly faithful recording of romeo and juliet and we are one step closer to having it in our home next stop new york city and the precise engineering business of transferring the recorded sound from tape to a disc called black or master this this gives the grandfather of the records to come later let's look at the steps in the cutting of our lack of mastery most of the sound factors are already know the speed of the tape in recording its playing time and the sound level required these factors must be considered for both forty five r p m and long play lacquer masters  special lacquer master disc is closely inspected for the twelve inch long play record the master is sixteen inches in diameter for forty five extended play records the master is twelve inches in diameter in both cases the extra width allows plenty of working room in cutting beside the spindle for centering the turntable has a number of holes through these holes air suction hold the lacquer disc determine how far apart the grooves must be loud passages need more space between grooves the passages need less the cutting machine automatically spaces the music grooves according to the sound signal it's receiving now a test cut to determine the groove with the groove width must be exact so exact that it is carefully checked through a microscope everything's set and of course pitch lead in groove is cut to the music area the tape machine is started and exactly one and a half turns before the music begins the cutting head automatically changes from the lead in groove to find pitch music through the cutting stylus is a minute  perfectly ground and electrically heated so there is virtually no resistance as it cuts into the smooth lacquer during the cutting operation a constant watch is kept on the groove with to make sure it never varies from the prescribed setting it all sounds so simple when you're just skimming the surface actually of course it's a painstaking delicate operation but in time you have a perfect lacquer match the original paper goes into the vault for safekeeping to take its place for ever alongside many other priceless performances by the world's greatest  artistry of the romeo and juliet performance is being carefully preserved and we are another step closer to having that performance in our own living next stop indianapolis indiana one of three processing plants to which are like our master might go we start in production control here every lacquer master is assigned a sh a special business machine card from now on this card can lead you straight to our particular recording no matter where it might be in process the processing is identical for long play them forty five rpm records first the grooves in the lacquer master are carefully rechecked through a microscope they have to be perfect now we proceed to make metal copies from the like our master the first step silvering this takes precisely two minutes and forty seconds and the lacquer master comes out with a new face nala by patiently electro plating we add a series of metallic deposits one behind the other in another tank a much heavier build up of copper we'll see why in a moment we now have a master desk that is apparently all back on the front but watch now we have two from two masters the original lacquer master is on the left a new silver faced master is on the right but this is the point where most people long for a road map let's make one we started with a lacquer master to the face of it we added first silver then nickel copper and finally a lot more copper then we separate the lacquer from the metal now we have both our original lacquer master and a new silver faced or a metal master the grooves in the lacquer master make it a positive it can be played the matching ridges on the metal master make it a negative it cannot be played we continue work with the metal master repeating the gradual metal build up to make another part than another separation the metal master is at the left and a new part called a mold is at the right we have progressed from the original positive to a negative to another positive the metal master normally goes back immediately to build up another mold but that depends on the next importan the mold can be played so it is promptly readied for the sound test the mold is thoroughly cleaned to prevent damage in the test  in any name that tune on has put your money on a record eight hours a day and all kinds of music she loves it more important she is an expert at hearing the build up to the stamper is exactly the same except for one thing the stamper is nearly all pure hard nickel its ridges pressed the playing grooves into the finished record now prepared for stamping ground perfectly smooth on the back optically center punched for the record press trimmed to exact diameter record press is a complicated piece of equipment weighing two times it molds records by compression hours damper is mounted on the top die below it another stamp or simultaneously presses the other side of the record the record compound the finest pura vinyl obtainable is that into the press in granular form it is forced by hydraulic pressure into a soft plastic in just the right amount for one record the labels are pressed right into the record now ready to roll it has taken many steps and many man hours to get here but a new record is stamped every few seconds the record press automatically heats the vinyl plastic for stamping then automatically cools it so the record can be played immediately and here's the first long play copy of romeo and juliet a collector's item no the first pressing is always carefully inspected for everything from the correct serial number to perfect cent or for those who prefer the forty five extended play version than for the millions of teenagers anxiously awaiting the latest and ingenious machine turns them out automatically feeds itself the vinyl compound removes its own record and stacks them already trai down for the fast growing regions of tate and is the equally ingenious machines turn out duplicate copies have four times the playback speed to save time and backward to save rewinding and no matter  what your taste or preference in music in the packaging area you discover for unlimited variety the finest installment for a for children's album bogor instrumental solo it's a big op but no matter what type of music you prepare or whether you want it on forty five extended play or thirty three and the third long lay every record is made with the same care and or the same high fidelity standard and the romeo and juliet getting closer to home all the time a final inspection every record is carefully checked by experienced banker who know almost at a glance that the record is up to in its own distinctive sleeve another new or the moniker high fidelity recording finally ready for shipment a new mechanical shipping technique helps to speed it on its way here in the shipping control room special machines keep track of a quarter of a million new records made here every day which record to go where i am in what quantities the cards tell you the romeo and juliet recording goes out in both forty five extended play and long play versions the sorting machine divides the romeo and juliet shipping instructions into these two categories span the cartons are placed on a unique distribution right invented here from now on one girl keeps everything running smoothly as each order is filled according to the punch card instructions she changes the setting on an automatic addressing machine and the equipment does the rest the code number and address of the record distributor but his daughter automatically stamped on each card then the car keys passed through another machine where they are bundled together in groups of four and away accumulation area down below on another pair the car keys are accumulated for shipment to distributors and record dealers in all parts of the country these long play all them have been through the same shipping process as the copies romeo and juliet it's traveled a long way bar and illusion the last stop and the best seat in the country