AD30R EL84 question

Orange Amps Technical Q&A's

Moderator: bclaire

Post Reply
mauro1
New Member
Posts: 4
Joined: Mon Feb 23, 2004 6:07 pm

Post by mauro1 » Mon Feb 23, 2004 6:15 pm

When changing EL84 power tubes in an AD30R does the amp need to be rebiased? There doesn't appear to be any way to change the bias if it was needed. I know they should be at least matched.

fiveightandten
Orange Master
Posts: 3845
Joined: Sat Apr 05, 2003 6:18 pm
Location: Connecticut, USA

Post by fiveightandten » Tue Feb 24, 2004 5:49 am

Nope. That AD-30 is cathode biased. No way to adjust it, and no need to. Just get a set with a middle of the road or low end current draw and they should be fine.

-Nick
Image
'71 GRO100 || '96 OR-80 || AD30 || '64 AC-50 || AC-30TBX || Hiwatt DR504 || HI-TONE HT30
LP Standard || LP Studio || LP Custom Lite || Ric 620 || Ric 360 || MIA Tele || SG 61 RI

Post Reply

Who is online

Users browsing this forum: No registered users and 240 guests