5X4g BRAND MARCONI MADE IN ITALY MATCHED QUARTET OF NOS NIB
TUBES TYPE 5 X 4 THESE TUBES ARE FULL WAVE RECTIFIER THESE TUBES ARE MARKED 5X4 ON GLASS AND THEY HAVE GOT THE SAME PIN CONNECTION OF U52 MARCONI MADE IN ITALY SO, DESPITE OF STANDARD 5U4 THEY DIFFERS IN THE PINOUT CONNECTIONS IN OTHER WORDS THE 5X4 PROPOSED FOR SALE HERE are electrical equivalent to the very well know 5U4. It only differs in the pin out. Sockets which are wired for the 5U4 can be very easily rewired to accept the 5X4. While the plates of the 5X4 connect to pins 3 and 5, the 5U4 has the plates brought out to pins 4 and 6. The former has the filaments at 7 and 8 and the latter at 2 and 7. The rectifier socket can even be wired such that it accepts both tube types. All that is needed are 3 jumpers which connect pins 3 with 4, 5 with 6 and 2 with 7.
TUBE 1: 58/55 (reference 40) TUBE 2: 57/55 (reference 40) TUBE 3: 56/56 (reference 40) TUBE 4: 56/60 (reference 40) RIBBED PLATE HOLED PLATE ESTERNAL WELDED PLATES LARGE D GETTER DOUBLE WELDED REINFORCED NOS NEW OLD STOCK (ORIGINAL PAPER AND CARTON) TUBES CAMES FROM BULK NEVER TOUCHED OUTSTANDING TUBES FOR AUDIO AMPLIFIER USE PERFECT FOR RECTIFIER IN THE FIRST STAGE AUDIO HI END
tube valve lampe röhre tsf 진공관 真空管 HAM RADIO audio hi-end hi-fi diy POWER AMPLIFIER roehre Pre-Amplifier Preamp Pri VINTAGE stereo SE Single Ended PP Push-Pull VACUUM TUBES röhren roehre vorverstärker röhrenverstärker preamp preamplifier roehre röhre nos nib tube ovp röhren
BOX 35
QUAD 1