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Member Since 02 Sep 2007
Offline Last Active Jun 27 2015 10:51 PM

Posts I've Made

In Topic: Can an AR2a cabinet be modified to accept AR3a drivers?

22 June 2015 - 06:12 PM

Measurements suggest the AR3a woofer is likely to fit the AR2ax cabinet.

The 2ax grille opening is 12"; the 3a grille opening and flat sides of the 

woofer are both about 11-1/4". That woofer is 12" diameter otherwise-

vertical space on the 2ax cabinet looks adequate to handle it.

In Topic: Ever see a Heathkit AS-103?

19 June 2015 - 11:03 PM

I just drilled the pressed side of the rivet out or off, I guess- the end that

faces the outside. Yes, I just used a(n apparently) stainless steel nut and

bolt. It's what I had on hand at that moment.


And that is the good side of the disc. It's what I described- lost some of its

plating and had some corrosion on one edge. It tested good, though, through

all its travel even with a half-eaten wiper, except at each extreme. Those 

terminals holding the wire coil needed attention, but I didn't want to

disturb them (the pot in the upper picture).


Obviously this is more for personal use. I wouldn't want, if I was in the biz,

to send this out the door. But I'm a tinkerer, so I took the challenge.

In Topic: Ever see a Heathkit AS-103?

19 June 2015 - 01:30 AM

This is my version of a "rebuild", though it would eliminate the worst cases.

Just flipping the center disk might be enough to save quite a few pots.

The disc on this one has lost some of its plating and has corroded around

part of the outside, but it's turned where the wiper doesn't travel.


Attached File  AR3_pot2.jpg   108.14KB   1 downloads


And, yes, I like the original iteration, though I've only seen them once (in

my tiny collection of 6 pairs of early ARs). Much stouter looking.





In Topic: Rear label, AR3a, take one

05 June 2015 - 01:07 AM

I'm willing to attempt other labels*. I just don't have good photos of any. All these are from my collection.


* though I wouldn't think these would deserve the effort :-)

Attached File  small.jpg   13.7KB   1 downloads

In Topic: Rear label, AR3a, take one

04 June 2015 - 03:59 AM

Here's the AR2a label, from a pre-zip code build.


AR2a_label.pdf is a single label; AR2a_label2.pdf has two labels on one page.


And I included the photo if anyone wants to build their own.