Marshall Haze volume dropping

[FuseG4]

So I have a 40w old Marshall combo that I got for free from a family member on indefinite loan.
There's two channels and on the lead channel, there is a boost mode that changes the bias on a gain stage. When on that lead channel, and only with boost on, the master volume behaves strangely.
The taper is a pretty smooth increase in the potentiometer until about 8. Then from 8 to full, the volume decreases slightly. The amp is quieter with master volume on 9 than on 8. Only in boost mode. Boost off, amp keys getting louder till 10 on the knob.
Is this a bad pot? Its some kinda boxy sealed PCB mounted kind.

I figure it's gotta be something in the boost circuit or potentiometer but not sure.
I don't ever really run it at Max master volume in boost mode so this is really just to see if it's a sign of something else on the amp about to go out too

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[Adieu]

Re: Marshall Haze volume dropping

I only had a Haze for a couple days (came in a trade) before selling it off... iirc, it lacked volume and had no gain to speak of, and the internet was full of people calling it a weak piece of junk with many inherent problems

Might just be the way it is

 

[FuseG4]

Re: Marshall Haze volume dropping

I only had a Haze for a couple days (came in a trade) before selling it off... iirc, it lacked volume and had no gain to speak of, and the internet was full of people calling it a weak piece of junk with many inherent problems

Might just be the way it is

Well mine has as much gain and is as loud as a hot rod deluxe. Clean channel breaks up on 4-5 with humbuckers, gain channel can do like Plexi to low jcm800 kinda gain it just is a bassy amp and it doesn't hold it together as long. Gets farty.
But I'm pretty sure the amp is still not supposed to have that little volume drop. I would like to know what the cause is mostly out of curiosity.

But yeah I'm well aware of internet dislike for amp. Shame. There's a mod kind of like the DSL c19 mod for the Haze. Iirc There's a treble shunting cap on the lead channel somewhere and if you clip the capacitor, the amp becomes more balanced. I think they tried to make the amp sound good (too warm/Smoky/hazy??) on showroom floors. I clipped the cap and the amp is now what I would call "ok". Not great.
But it really reminds me of a British flavored hot rod deluxe and it can cover a lot of the same ground.





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