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Post by bluzman on Jun 4, 2014 20:07:32 GMT -7
So I've been gigging my Z-28 steadily for the past year... 1x10 with a Gold... Red cab so it definitely sounds better right there! During the years, I switch to the M12, MAZ Jr. and Ghia here and there too, but the Z-28 gets most of the gigs... but I haven't changed the tubes in the Z28 in a few years, and I've always still been really happy with the tone until recently...
So today I took a little time and checked the bias with existing tubes (JJs) and there was a bigger current spread from when I put em in. 24.5 on one and 29 on the other. (They were both very close to 28.0 when I put those tubes in.)
I recently got matched duets and quads when I ordered the new tubes and popped in the new JJs. I got em close to the same current. Let it set for 1/4 hour and tweaked it again and I left em at 27.9 and 28.2 and they held steady for another 15 mins. Put it all back together and set up for rehearsal tonight.
WOW!!!
....and HOW!!!!
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Post by pcns on Jun 6, 2014 19:17:24 GMT -7
Nothing like fresh tubes!
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Post by nmz on Jun 7, 2014 12:43:35 GMT -7
Good to hear it is such a great amp. I need to do the same it has been awhile.
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Post by Maddog on Jun 7, 2014 13:09:57 GMT -7
I had the great pleasure of hearing Sean put his Z 28 (#1 actually) thru its paces last thursday from the audience vantage point. Man it made the F - type amps suck in comparison..... Much more color in the mids and just a completely refined voice...... Plus, Sean is a pretty darn tasteful picker too! Killer!!! Major z28 gas now!
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Post by Joey Beverages on Jun 12, 2014 7:55:56 GMT -7
Hmmm, fresh tubes and bias .... might be somthing I should be lookin' at - still got the originals in mine as it shipped with back in '06
cheers always, eh
Joel
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Post by Sean on Jun 12, 2014 13:48:59 GMT -7
I had the great pleasure of hearing Sean put his Z 28 (#1 actually) thru its paces last thursday from the audience vantage point. Man it made the F - type amps suck in comparison..... Much more color in the mids and just a completely refined voice...... Plus, Sean is a pretty darn tasteful picker too! Killer!!! Major z28 gas now! Awww shucks, man
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