Tubes on the Haze 40

Haze 40watt and 15 watt

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HAZE MHZ 15 HEAD- 15W, guitar head-unit, five-tube chassis, preamp: 3 X ECC83, power: 2 X 6V6, solid-state rectifier, two channels, reverb, echo, vibe, chorus, front gold control panel, single input, nine knobs (effects adjust, effects depth, r, b, m, t, OD v, OD g, Clean v), power switch, effects switch, channel switch, bright switch, rear panel: emulated line out, two speaker jacks (16 ohm, 8 ohm), effects loop with on/off switch, footswitch jack, two-button footswitch included, black covering, gray grille with white piping and white script Marshall logo, 20.5 lbs., mfg. 2009-2012.

HAZE MHZ 40C COMBO - 40W, 1-12 in. Celestion G12T-66 speaker, guitar combo, five-tube chassis, preamp: 3 X ECC83, power: 2 X EL34, solid-state rectifier, two channels, reverb, echo, vibe, chorus, front gold control panel, single input, 10 knobs (Normal Ch. v, OD Ch. v, OD Ch. g, t, m, b, p, r, effect depth, effects adjust), bright switch, boost switch (Normal Ch.), channel switch, boost switch (OD Ch.), effects switch, standby switch, power switch, rear panel: emulated line out, two speaker jacks (16 ohm, 8 ohm), effects loop with on/off switch, footswitch jack, two-button footswitch included, black covering, gray grille with white piping and white script Marshall logo, 44.7 lbs., mfg. 2009-2012.

HAZE MHZ112 SPEAKER CABINET - 1-12 in. Celestion G12-66 Marquee speaker, closed back, straight or angled front, designed for use with the Haze MHZ 15 Head, black covering, dark gray grille cloth with white piping and white script Marshall logo, mfg. 2009-2012.

Eddy Rigotti
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Tubes on the Haze 40

Postby Eddy Rigotti » 01 Jun 2014, 20:40

Hi everyone,

I recently had to change my power tubes on my haze 40 because there was a crakling sound coming out the amp. I have read that the tubes used by Marshall were Shuguang EL34b or ruby EL34b. I bought two pairs of each of them.
With both of the pairs, the crakling sound was gone, but something was missing in the sound. It was warmless, less gain, anyway not the sound that I was in love to. So for now I don't really know what to do. I would like to have some of your experiences with this amp especially when you had to change the tubes. I am new here, I still don't know if you talked about this already. I am still searching...

Mikey Nails!
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Re: Tubes on the Haze 40

Postby Mikey Nails! » 10 Jun 2014, 11:38

Hey! Have you tried any other tubes? I have only had my Haze 40 for a couple months, but it's been an eventful couple months.

Anyway, mine came with JJ EL34s and 12AX7s marked "Marshall." I bought it as new old stock from a local shop, so I don't know if they were stock or not. I'm pretty sure I've read that some did come stock that way.

Of course, tube preferences are subjective, but I've read that the best combination is Tung-Sol for the preamp and JJ for the power. After changing the speaker to an Eminence Governor, I've been pretty happy with the sound, but I am picking up some Tung-Sols just to see what happens.

Muziekschuur
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Re: Tubes on the Haze 40

Postby Muziekschuur » 05 Jun 2015, 04:13

The amp should probably be biased. If you can't. Take it to a technician.

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