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AC-15 Heritage tune-up

Posted: Wed Mar 24, 2010 9:20 pm
by BuddyDog
After 3 years, the power tubes on my AC15 Heritage needed replacing, so I ordered the full set from Eurotubes.

It was very easy to remove the screws and slide the chassis out. I know some people have pooh-poohed the "stock" cheap preamp tubes, but they did not skimp on the Heritage series with the tubes.

All my ECC83's are Russian Sov-Teks 8) , the EF86 is unknown as it's dipped in Dynamat, so I replaced it with a JJ EF806. I left the stock pre-amp tubes alone.

Moving onto the old EL-84's. They were Russian made Electro-Harmonix. I replaced them with the JJ's. I was going to replace the rectifier tube, but the factory had already used a JJ there.

Fired up and she sings with the new EL-84's.

Now need to pick up the Silverface from the shop. It was time to change the original RCA 6V6's after 36 years :shock:

Re: AC-15 Heritage tune-up

Posted: Wed Mar 24, 2010 9:33 pm
by jps
I have mostly JJs in my LA-610 Mk II, two ECC81 and two ECC83S tubes, along with one EH EL84EH tube. This is the best sounding preamp/compressor I have used/owned to date.

Re: AC-15 Heritage tune-up

Posted: Fri Mar 26, 2010 11:57 pm
by 8mileshigher
Thanks for posting Steve.
Those JJ power tubes get pretty decent reviews from lots of Vox users.