Category Archives: Vintage

Need 45V batteries for your old radio?

Posted on May 21, 2015 by retrovoltage

Rayovac has been making batteries for over 100 years, and their batteries were commonly found in use with many types of battery-operated tube radios. Most commonly, radios would operate on 45V batteries with a tap half-way (for 0-22.5-45V). Two in … Continue reading →

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“We’ll See You at the Trade Show!”

Posted on May 20, 2015 by retrovoltage

Radio Retailing, Apr. 1929

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Factories Making CeCo Tubes

Posted on May 19, 2015 by retrovoltage

CeCo Plant No. 2, now partially in operation and to be finally completed in April – located at Providence, R.I. Radio Retailing, Apr. 1929

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Raytheon, “The Healthy Tubes”

Posted on May 17, 2015 by retrovoltage

What makes these tubes healthy compared with the others, anyway? Radio Retailing, April 1929

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The Audak Electro-Chromatic Pick-Up

Posted on May 16, 2015 by retrovoltage

Throughout the music world AUDAK Reproducers have long been the standard by which others are judged and valued. Their ability to respond to every shade and colortone…so essential to REAL music…has been faithfully transmitted to the AUDAK Chromatic Pick-up, creating … Continue reading →

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The New Stewart-Warner Series 900 Radio

Posted on May 15, 2015 by retrovoltage

This Consolette Ensemble combining Stewart-Warner Table Cabinet Receiver with the New Stewart-Warner Dyphonic Reproducer, an arresting value at $113 (less tubes). Radio Retailing, April 1929

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Accuphase C-200 Professional Pre-Amp Full Overhaul

Posted on April 16, 2015 by retrovoltage

When Kenwood’s engineers left to form Kensonic, they really brought their A-game, and this Accuphase C-200 pre-amp is no exception. It’s a mammoth device, built with exceptional attention to detail and top of the line components throughout. The owner reported … Continue reading →

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Harmony H400 Tube Guitar Amplifier Repair

Posted on April 13, 2015 by retrovoltage

I recently had another Harmony amplifier, the  H400, through the shop for an overhaul. It’s owner, who previously sent me a Harmony H500 for service as well, took it to a local tech but wasn’t satisfied with the repair so … Continue reading →

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Telefunken Bajazzo Sport 201 Transistor Radio

Posted on March 30, 2015 by retrovoltage

I don’t typically service portable transistor radios, but I make an occasional exception for something especially unique or interesting. The Telefunken Bajazzo Sport 201 is no exception – it’s a high end piece of German engineering, a great performer with … Continue reading →

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Sony TA-5650 Full Re-Cap and Adjustment

Posted on March 4, 2015 by retrovoltage

I recently got to work on another of the Sony VFET line of integrated amplifiers, the Sony TA-5650. I’ve had one through the shop previously, and this one came in for the same service. It came in running fine – … Continue reading →

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