Category Archives: Stereo

Harman/Kardon Control Amplifier A-401 Restoration

Posted on November 19, 2014 by retrovoltage

This little Harman/Kardon Control Amplifier, model A-401, just came through the shop for a full overhaul. It was in a pretty sorry state to begin with – one channel distorted, one barely gasping for air, and a world of scratchy … Continue reading →

Posted in Audio, Electronics, Hi-Fi, Projects, Stereo, Vintage | Tagged a-401, amp, amplifier, circuit boards, control amplifier, harman/kardon, hi-fi, photos, pictures, rebuild, restoration, stereo, stereo pictures, vintage stereo | 8 Comments

EICO Stereophonic Integrated Amplifier HF-81 Repair

Posted on November 7, 2014 by retrovoltage

From the late ’50s, I had this nice example of an EICO HF-81 amplifier come through my shop. These are nice little stereo amplifiers with a built-in phono pre-amp and RIAA equalization and feature about 14W of power output per … Continue reading →

Posted in Audio, Hi-Fi, Projects, Stereo, Vintage | Tagged capacitor, capacitor replacement, eico, EL84, hf-81, hi-fi, hi-fi amp, hifi amp, repair, restoration, Tube Amp, tube amplifier, vintage | 1 Comment

Boes 901 Series IV Active Equalizer #241792 Refurbishment

Posted on November 3, 2014 by retrovoltage

Bose® 901 Series IV Active Equalizers are getting up there in years now, too, so more and more are coming up for repair. This one came in with a flickering power supply in need of an overhaul. Series IV was … Continue reading →

Posted in Audio, Bose, Hi-Fi, Projects, Stereo, Vintage | Tagged 901 active equalizer, active equalizer repair, Bose, bose repair, equalizer repair | 1 Comment

Phase Linear 2000 Pre-Amp Overhaul

Posted on October 6, 2014 by retrovoltage

I had a Phase Linear 2000 on the bench for a repair recently. It was running okay, but had some pops and clicks and the controls weren’t all that smooth. Time for an overhaul before anything worse cropped up! This … Continue reading →

Posted in Audio, Electronics, Hi-Fi, Projects, Stereo, Vintage | Tagged 2000, capacitor replacement, fine gold, hi-fi, Nichicon, phase linear, phase linear 2000, pre-amp, preamp, stereo repair | Leave a comment

Marantz 2245 Stereophonic Receiver Rebuild

Posted on September 19, 2014 by retrovoltage

An iconic piece of kit from the golden age of hi fi just came through my shop: the Marantz 2245 Stereophonic Receiver. This fantastic receiver is in pretty good cosmetic shape, but its owner reported that it started acting up – it’d take … Continue reading →

Posted in Audio, Electronics, Hi-Fi, Projects, Stereo, Vintage | Tagged 2245, hi-fi, Marantz, rebuild, recap, receiver, Refurbish, repair, stereo receiver, Stereophonic, vintage hifi, vintage stereo | 7 Comments

The Speaker Spotter – Speakers of Craigslist – April 18th, 2014

Posted on April 18, 2014 by retrovoltage

There’s always something interesting for sale on Craigslist, especially in Seattle. Do click the titles to see the original postings with more photos and additional information if you’re interested – otherwise, enjoy the virtual window shopping! Avid Corporation 100 Speakers – … Continue reading →

Posted in Audio, Collections, Photos, Speakers, Stereo, Vintage | Tagged 7000A, A25, altec, altec lansing, Avid, Avid 100, Bose, Bose 601, Dahlquist, Dahlquist M-905, DDS1, Dynaco, Dynaco A25, exponential, Fisher, hi-fi, Horn, Klangbox, M-905, multicell, Nova-6, Radio Shack, RB66, Realistic, Realistic Nova-6, Seeburg, Seeburg Discotheque, series III, speaker spotter, Speakers, stereo, Technics, Technics 7000A, Telefunken, Telefunken RB66, tweeter, vintage, VOTT, woofer | 2 Comments

The Speaker Spotter – Speakers of Craigslist – April 4th, 2014

Posted on April 4, 2014 by retrovoltage

There’s always something interesting for sale on Craigslist, especially in Seattle. Do click the titles to see the original postings with more photos and additional information if you’re interested – otherwise, enjoy the virtual window shopping! Today we’re featuring some speakers … Continue reading →

Posted in Audio, Collections, Hi-Fi, Photos, Speakers, Stereo | Tagged 2001, 8320, audiophile, C35, dome, Duntech, Duntech Soverign, Empire, Empire Royal Grenadiers, Famous Johnzer, Grenadiers, Greybeard, Greybeard Audio KB22, hi-fi, Horn, James B Lansing, jbl, JBL C35, Johnzer, KB22, kenwood, Kenwood KL-8080X, KL-8080X, marble, MCS, MCS 8320, mid, Modular Component Systems, Petroff, Petroff Labs, Petroff Labs Reference, Polk, Polk Audio, Polk Audio RTIA9, Polk RTIA9, PPX-1, Reference, Royal, RTIA9, Soverign, Speakers, tile, tweeter, vintage, Wharfedale, Wharfedale PPX-1, woofer | Leave a comment

The Speaker Spotter – Speakers of Craigslist – March 21st, 2014

Posted on March 21, 2014 by retrovoltage

There’s always something interesting for sale on Craigslist, especially in Seattle. Here’s a selection of especially notable vintage speakers and other audio products for sale on the local Craigslist. I’m not affiliated with any of these sales, but if you’re interested, you … Continue reading →