Description
The deconstruction continues! 🛠️ In this exclusive teardown video, we are taking a deep dive inside the legendary Hungarian Videoton DC 4014A speaker boxes from the early 1980s.
Let's look at the history first. The original Videoton DC 4014 was introduced around 1978, but this specific "A" version came out in 1982 with massive upgrades. The manufacturer reacted to the rise of more powerful solid-state amplifiers, increasing the music power handling from the original 70W up to 120W! They also upgraded the connections to modern spring-loaded terminals and introduced a snap-on front grille instead of the old fixed cloth frame.
Watch as I use a power drill to remove the front panel and carefully take out the damping material to reveal the internal crossover network with its large blue coils and yellow capacitors. I completely dismounted all the drivers and mounted them in reverse on the front baffle so we can get a perfect close-up look at their magnets and spec labels.
This unique 3-way box features a total of five speakers! The final cabinet impedance is 8 ohms, achieved through some very interesting serial connections. We examine the dual 4-ohm HA 20/1014 bass drivers wired in series to create an 8-ohm load. By the way, while the 1978 version used durable textile or paper surrounds, this 1982 model switched to modern polyurethane foam for softer bass—which, as you can see, has completely rotted away to dust after 40 years!
Next up is the 8-ohm HB 12.5/11 midrange driver, which was another upgrade from the older 70s version. Finally, the high-frequency section features a very unusual serial combination of two completely different 4-ohm tweeters: a dome tweeter (HG 2.5/1624) and a paper cone tweeter (HD 10 series). The crossover was heavily modified in this "A" version to better align the phase between these two different tweeters, fixing the phase drops around 3.5 kHz that the older models suffered from.
👇 Hit play to see the raw, exposed engineering of this classic Eastern European HiFi masterpiece, and let me know in the comments what you think of this 5-speaker serial configuration!
Timestamps:
0:00 - Introduction and bringing the speaker box to the table
0:10 - Using a power drill to remove the front speaker baffle
0:28 - Removing the internal fiberglass damping material
0:43 - Close-up view of the internal crossover network
0:51 - Detailed look at the reverse-mounted speaker labels and magnets
2:30 - Breaking down the 8-ohm final impedance and dual serial woofers
2:51 - Examining the 8-ohm HB 12.5/11 midrange speaker
3:16 - Explaining the unusual serial connection of the two different tweeters
5:03 - Outro with Kája the cockatiel and an invitation to join the channel
About Angelicaaudio:
Welcome back to Angelicaaudio! Your ultimate garage laboratory for vintage audio gear, retro HiFi teardowns, and classic stereo restoration. We don't just show you the shiny, perfect equipment; we dive deep into the real engineering, crossovers, and components that make vintage audio tick. Whether we are testing the heavy magnets of a 1960s Tesla bass driver, comparing classic 80s boomboxes, exploring the massive boxer motor of a classic cruiser, or tearing down Hungarian Videoton speakers to their bare wires, we keep it honest and raw. Subscribe and join our global community of vintage technology enthusiasts to learn how to buy, fix, and truly enjoy classic analog engineering!
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