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Board index » DIY Forums » Vacuum Tubes / Thermionic Valves

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Oddwatt Push Pull Tube Amplifier Projects

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Jim_O

Post subject: Re: Oddwatt Push Pull Tube Amplifier Projects

Posted: 23 Dec 2018, 19:07

Joined: 24 Nov 2010, 14:39
Posts: 30
Location: California

Interestingly enough, in the last page or so of the Forewatt thread in the forum, there was a DIY'er with a similar hiss problem in his preamp. He fixed it by replacing the LR8. Maybe a bad batch of them are out in the wind?

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Danny

Post subject: Re: Oddwatt Push Pull Tube Amplifier Projectser

Posted: 25 Dec 2018, 14:32

Joined: 29 Jun 2016, 15:59
Posts: 63

I am listening to the KT88 OddBlocks after I fixed the noise issue by removing the LR8s, cranking it up (the room is shaking) and I got to tell you, they sound amazing!!! I cannot hear no distortion whatsoever. The addition of the sub outputs was also a great mod for when playing hard rock. Classical, jazz, easy listening, strings...it all sound great.
Besides the noise issue, it looks like the malfunctioning LR8s were also affecting the sound quality. It is much tighter, definite and clear.
Again thanks to all for the help. I am so glad!

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