The sunn Forum
0
  • September 21, 2018, 03:29:40 am
  • Welcome, Guest
Please login or register.

Login with username, password and session length
Advanced search  

News:

Welcome to the new home of The sunn Forum!

Author Topic: Cone Excursion  (Read 1124 times)

0 Members and 1 Guest are viewing this topic.

eddiemac

  • Jr. Member
  • **
  • Offline Offline
  • Posts: 16
Re: Cone Excursion
« Reply #14 on: December 30, 2017, 09:51:09 am »

Thanks. Just one thing: 
Quote
"In this case, the cathode bypass resistor is plenty large enough at 250μF . . ." 
Am I missing something?

Isaac

  • Global Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 1,803
Re: Cone Excursion
« Reply #15 on: December 30, 2017, 10:10:30 am »

No, you're not missing anything. I meant to write, "the cathode bypass capacitor."
Isaac

Happy Face

  • Full Member
  • ***
  • Offline Offline
  • Posts: 62
Re: Cone Excursion
« Reply #16 on: January 05, 2018, 10:51:37 am »

Great thread! So informative.

eddiemac

  • Jr. Member
  • **
  • Offline Offline
  • Posts: 16
Re: Cone Excursion
« Reply #17 on: May 19, 2018, 11:15:29 am »

I replaced the green .0022uF coupling cap with a new Sozo mustard cap of the same listed value.  My Fluke meter reads 3nF on the old cap and 2nF on the new.  I notice an improvement with regard to speaker bass handling now.

Question:  Is that 250uF cathode bypass cap an electrolytic?  It seems to be working fine, but will it need to be replaced some time in the future? 
« Last Edit: June 04, 2018, 12:48:13 am by eddiemac »

Ryan Phelps

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 316
Re: Cone Excursion
« Reply #18 on: May 20, 2018, 09:09:40 am »

Yes, it's an electrolytic. It's common practice to replace cathode caps when re-capping an amp. Electrolytics have a limited life-span and this cathode cap is pretty inexpensive, so I would replace it.