|
Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
|
|
|
Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
|
In Reply to: "direct coupled amplifier"....... posted by RC on December 27, 2003 at 20:16:41:
The DC coupling marketing thing was a big deal in its day. Early 70s transistor designs used a large capacitor to connect the speaker to the final amp stage. Not only were these caps expensive, newer circuit topologies eliminated them as much to reduce cost and weight (remember this stuff came from Japan). The first receivers and integrated amps using this arrangement got plenty of competitive marketing attention, hence the "DC" references you see on these amps.Ron is also correct that many of the interstage coupling caps were also being removed during this time of the early 70s. Generally, you can use much of the marketing mantra you see on various vintages of amplifiers/receivers as milestones in the designs employed in these amps. We still see this today in the discussions of various amplifier design classes such as "Class A, Class B/B1/B2, Class H", etc.
For example, I have an 80s vintage Technics receiver in the garage that proudly displays a Class H label on it. The fact that not every amp marketed today is not a Class H design tells you something about the success of that particurlar attempt to provide a more efficient amp design.
Just my thoughts on the matter.....
Cheers,
David
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- "direct coupled amplifier" marketing: milestones across the years - doodlebug 20:41:51 12/28/03 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
