tube bias for Harp King?
Thu, 02/03/2011 - 16:08
I need to replace the power tubes in my Harp King 6x10 (KT90) . I have two matched tubes that show a bias point of 37. I have no idea what the original tubes bias point was and it does not appear that John has a point on the chasis for the bias to be adjusted. I have no tech ability, but my bass player has extensive background with all tech aspects. Just hate to let him touch it until I get a little more info. Have an email in to John Kinder, but getting in touch with John can often take some time.
I don't want to hurt this amp - can't go to the local music store to get a replacement.
Bob Freeze
Hello Bob- This question is a little outside the scope of this forum. You should call or email me for some specific service info on your particular amp. The Harp King amps that use the KT-90 can be challenging since the tube is no longer in production. Of course, my question for you is - how do you know that you need new tubes? I service Rick Estrin's Harp King, and it has had the same pair for several years.
Skip Simmons
Skip Simmons Harp Amps