Bottlehead Forum

Bottlehead Kits => Legacy Kit Products => Quickie => Topic started by: xcortes on December 20, 2016, 05:48:07 AM

Title: Choke loading question
Post by: xcortes on December 20, 2016, 05:48:07 AM

I want to try some EXO-001 chokes in the Quickie. They are 1k ohm so the plate of the tubes would be at higher voltage than designed. Is that OK or should I do other changes to adjust the operating point?

Thanks a lot!

Title: Re: Choke loading question
Post by: Paul Joppa on December 20, 2016, 09:59:34 AM

It's OK. The operating conditions are stabilized by the cathode resistor. You will draw a bit more current so the 9-v batteries will drain faster, but probably not enough to be noticeable.

Title: Re: Choke loading question
Post by: xcortes on December 20, 2016, 12:08:02 PM

Cool. Thanks Paul!

Title: Re: Choke loading question
Post by: BNAL on December 20, 2016, 12:19:03 PM

xcortes,

I'm interested to know what you think of the chokes in the Quickie. I just received mine in the mail and having some upgrade options would be great.

Brad

Title: Re: Choke loading question
Post by: xcortes on December 20, 2016, 01:10:50 PM

I''m sure the pjccs are better but I'' planning to build an pre+ headphone amp quickie with a lot of parts available. It's gonna be a monster for my earbuds :)

Title: Re: Choke loading question
Post by: johnsonad on December 20, 2016, 01:31:55 PM

sounds like you are putting that extra MQ iron to good use my friend!

Title: Re: Choke loading question
Post by: xcortes on December 20, 2016, 01:45:55 PM

At least part of it :)