Thanks for all the info! @westcoastaudiophile what is "improved" about the Telefunken KT88? Have you tried them?
Question on Tube Swapping and Biasing
First time tube swapper. I’ve had my Luxman MQ-88use and CL-38use preamp for about 5 years. They sound fine, but it’s good to have a backup set of tubes. So I bought a matched set of 4 Gold Lion KT88 tubes and replaced the stock JJ tubes.
So far so good, everything sounds good, and hopefully even better after breaking in.
Should I be concerned about not setting the bias for these new tubes? And how would I go about doing that? The Luxman manual says nothing about this.
Some online sources recommend having an audio professional bias the tubes, but to my limited understanding the bias is affected by the actual current going into the amp, so having a servicer bias it at a shop might not be the optimal way to go.
Could I hurt the amp or the tubes my not properly biasing them? Or am I overthinking all of this?
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ghdprentice is correct. It's not that complicated. You can get a digital mulitmeter at any hardware store, then just follow the directions Luxman provided. Don't get thrown off by the chatter anf noise. Sorry, folks, but he has new tubes and just wants to bias them correctly. The instructions are simple and quite clear. |
@jaylat If you click on the link that @westcoastaudiophile provided for you and hover your pointer over the image you can read on the side of the box that it is a JJ tube that's been screened, tested and cryo'd. |
- 24 posts total