birchoak
Hi-Fi Nut
I was browsing nudies of the Fisher RS-2015 receiver and couldn't get over the open, clean, symmetrical layout of the thing's guts: output transistors on the outside of the rear panel for maximum cooling, detachable wiring harnesses to each channel's heat sink so you can work on 'em out of the chassis, resistors lined up in neat rows on the boards, plenty of empty space for air to circulate and hands to get at stuff, and bulbs are right there, so easy to get to!
This is a far cry from the complexity of a 70's Bose Spatial Control Receiver I once worked on for weeks, and surely designs of this nature, good solder joints and quality parts notwithstanding, lend themselves to greater reliability and life span? On a hunch, I pulled the cover off a Scott 420A integrated amplifier that has been driving 4 ohm speakers in my basement woodshop. There was dust everywhere and I haven't touched the insides since I bought it on that auction site, yet it has performed flawlessly for 7 years with absolutely no degradation in sound. I believe everything inside is bone stock.
Why has this humble, unremarkable-looking amplifier held up so well in a hostile environment?
Like the Fisher, there is quite a bit of empty space inside, and, like the Fisher, there is a ridiculous amount of heat sinking. I popped the bottom cover off and the solder joints look as bright and shiny as the day it rolled out of the factory, so this probably helps, too.
What amplifiers or receivers have you worked on that are ridiculously easy to work on or inspire you with their clean, logical internal layout?
BTW, I felt bad for the little Scott, and I have since cleaned and polished it thoroughly. It produces an unbelievably sweet sound and has been relocated permanently from the shop.
P.S. I have attempted to post a pic of the RS-2015
This is a far cry from the complexity of a 70's Bose Spatial Control Receiver I once worked on for weeks, and surely designs of this nature, good solder joints and quality parts notwithstanding, lend themselves to greater reliability and life span? On a hunch, I pulled the cover off a Scott 420A integrated amplifier that has been driving 4 ohm speakers in my basement woodshop. There was dust everywhere and I haven't touched the insides since I bought it on that auction site, yet it has performed flawlessly for 7 years with absolutely no degradation in sound. I believe everything inside is bone stock.
Why has this humble, unremarkable-looking amplifier held up so well in a hostile environment?
Like the Fisher, there is quite a bit of empty space inside, and, like the Fisher, there is a ridiculous amount of heat sinking. I popped the bottom cover off and the solder joints look as bright and shiny as the day it rolled out of the factory, so this probably helps, too.
What amplifiers or receivers have you worked on that are ridiculously easy to work on or inspire you with their clean, logical internal layout?
BTW, I felt bad for the little Scott, and I have since cleaned and polished it thoroughly. It produces an unbelievably sweet sound and has been relocated permanently from the shop.
P.S. I have attempted to post a pic of the RS-2015