Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Effects => Topic started by: scstill on September 30, 2020, 03:05:09 pm

Title: Reverb Rebuild and Adjustment 1484
Post by: scstill on September 30, 2020, 03:05:09 pm
Continuing saga of the Silvertone 1484...

Before going the route of a new reverb, I decided to open up the original unit. Refurb included new paper insulators at the 4 spring contacts (originals were quite brittle) and a new thread guy line for middle support (orig was broken). On test (see pic) it sounds pretty good so I will stay with it for now.

My question is on adjustment.
I can tighten or loosen the spring by moving more or less coils to the non vibrating area at each end between the contacts. I cannot really tell much difference in the result, although it "seems to be better" when the spring is set naturally without tension. Should there be a difference? 
What would be an "ideal" spring tension adjustment?
Any theory to coil air spacing or spring tension?

Title: Re: Reverb Rebuild and Adjustment 1484
Post by: sluckey on September 30, 2020, 03:39:55 pm
Even the Sears engineers didn't put that much thought into it. Just play it like you stole it!    :l2:
Title: Re: Reverb Rebuild and Adjustment 1484
Post by: scstill on September 30, 2020, 08:41:18 pm
Even the Sears engineers didn't put that much thought into it. Just play it like you stole it!    :l2:

Part of my journey is to learn from people who know more than me. That was the reason why I came to this forum.
Certainly there is more to spring reverb theory & design than an arbitrary spring connected to the circuit.
But since there is not a discernable sound difference I will button it up and play it.