Monthly Archives: May 2015

Marantz 2270 Stereophonic Receiver Overhaul and Adjustment

Posted on May 26, 2015 by jwk

I recently got to work on another iconic piece of hi-fi history, the Marantz 2270 stereo receiver. I’ve had this model through my shop before, as well as a couple of other 22xx receivers and they’re well built and generally … Continue reading →

Posted in Audio, Electronics, Hi-Fi, Projects, Stereo, Vintage | Tagged , , , , , | 3 Comments

ANOTHER fine achievement in radio set design

Posted on May 23, 2015 by jwk

Radio Retailing, Apr. 1929

Posted in Collections, Vintage | Tagged , , , | 1 Comment

Need 45V batteries for your old radio?

Posted on May 21, 2015 by jwk

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 →

Posted in Commentary, DIY, Electronics, Vintage | Tagged , , , , , , , , | Leave a comment

“We’ll See You at the Trade Show!”

Posted on May 20, 2015 by jwk

Radio Retailing, Apr. 1929

Posted in Collections, Vintage | Tagged , , | Leave a comment

Factories Making CeCo Tubes

Posted on May 19, 2015 by jwk

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

Posted in Collections, Vintage | Tagged , | Leave a comment

Raytheon, “The Healthy Tubes”

Posted on May 17, 2015 by jwk

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

Posted in Collections, Vintage | Tagged , , , , | Leave a comment

The Audak Electro-Chromatic Pick-Up

Posted on May 16, 2015 by jwk

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 →

Posted in Collections, Vintage | Tagged , , , , , | Leave a comment

The New Stewart-Warner Series 900 Radio

Posted on May 15, 2015 by jwk

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

Posted in Collections, Vintage | Tagged , , , , , , , | 1 Comment

Yamaha B-2X Check-Up and Adjustment

Posted on May 13, 2015 by jwk

I recently had this Yamaha B-2X through the shop. It’s a massive beast of a power amplifier from the late ’80s, delivering up  to 170W per channel with 0.002% THD. Being somewhat more recent, this one just needed a quick … Continue reading →

Posted in Audio, Electronics, Hi-Fi, Projects, Stereo | Tagged , , | Leave a comment