![]() ![]() Overall it was fun to do and an ingenious device using electronics and precision engineering to give a simple but precise frequency measurement. I then hummed various nots into the microphone and was rewarded with various strobe line dependant on frequency. I threw the switch from warm up to run and the motor locked to 55Hz, success. It is extremely accurate, suitable for guitar, violin, bass, ukulele, viola, cello, banjo or. I then plugged in the lower unit and after a while the pilot neon lit meaning it was running. Strobe Tuner Pro is the only tuner that shows the real stroboscopic effect on your device. A first run of the motor showed it was making nasty noises, this was the start up cap (3.5 ♟ ac) cleverly hidden behind the original big can one which had been replaced with an ordinary 10♟ 400V DC one which unsurprisingly had blown out leaving a mess on the bottom of the case.Īfter this it ran fine and the neon lit up once the amplifier warmed up. I changed all the coupling capacitors and the electrolytic's in the top unit, the lower unit had new ones fitted fairly recently. It required a lot of work to bring it back to life including the main rectifier in the lower unit, 5U4G which showed it's demise with a big burn on the side of the valve and lots of mica rattling around in it. When you play at the same note that is selected for the motor speed, then the pattern on the wheel strobes in stable. Then hed pull the finger away and hed have a new layer of skin over the repair. It can then show the note and all harmonics as well. Stevie Ray Vaughan Conn ST11 Strobotuner. The upper unit contains an amplifier which instead of running a speaker runs a huge U shaped neon lamp to illuminate the strobes flashing at whatever frequency the microphone is picking up again a 6V6 in push pull is used. It has an oscillator section and an output stage using 4x 6V6 valves in push pull. It has 2 units, the bottom one is a frequency clock to run the motor unit and consists of an excited tuning fork tuned to exactly 55 Hz which locks the motor to this frequency and runs via precision gears several strobe discs in the upper unit. ![]() However, it’s important to consider all the features of the product to make sure it’s the right purchase for you. It was made in the early sixties but the original design was alleged to be from the 1936 and is used to tune instruments. When it comes to purchasing Strobe Tuners, many people only look at the initial cost. It came my way from Pete the guy who does musical instruments on the repair shop. The light illuminated a wheel marked with concentric bands of white-black markings that represented specific pitches. fyi The tubes are either labeled 'Sears' or 'Conn. I have never seen one of these before and probably won't again. The original strobe tuners from Conn (the Stroboconn), and later Peterson, were electromechanical devices that used a small neon light that flickered at the frequency of the input signal. ![]()
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