Pro Audio Asylum Pro studio recording equipment and music production/industry.

---

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Pro Audio Asylum ]

---

[ Alert Moderator ]

---

Ashly FET-500 Hum -- Help, please.

Posted by Thorozine (A) on September 20, 2011 at 07:10:54

I have a FET-500 that hums. The amp itself hums when it is on, meaning you can hear it even when nothing is connected to it -- no speakers, no inputs. You can of course also hear hum in the speakers as well, even with no input. The hum is (at least mostly) AC line frequency. Is this likely a simple matter of replacing the power supply capacitors or might there be more to it? The caps are 15mf, 100V. ** edit: The Rubycons at Newark are pretty reasonable and are screw terminal...and there are some BG brand caps on ebay that would work.

If I replace the caps is there any reason I can't solder in caps with leaded or snap in terminals instead of using screw terminals? That would give me more options in terms of affordability. Would I realize a big difference in performance between brands? The ones in there now are Centralab.

I would like to use this amplifier to drive the bass in a bi-amp'ed 2-channel home hifi setting.

Thanks for any help / guidance here.

-Michael

Edits: 09/20/11

This post is made possible by the generous support of people like you and our sponsors:

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---