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Post by dei305 on May 21, 2006 14:04:27 GMT -7
Hi All, Is there much of a difference between the first couple of years production on the Jr's vs the newer ones? And, more importantly, does Red sound better? Thanks! Rick
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Post by guitargeorge on May 23, 2006 4:10:24 GMT -7
I have seen pictures of 3 different MAZ chassis and they all differ from one another. I have a MAZ from the ninetys and I had the optional reverb ground loop hum but fixed that. The earlier amps were known for this problem. Some MAZ's have 2 large can capacitors hanging down off the chassis, mine has only one.
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Post by dei305 on May 23, 2006 5:28:05 GMT -7
Thanks for the info George! Rick
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Post by amakitalo on May 23, 2006 11:16:14 GMT -7
Hey guitargeorge how did you fix the hum you're talking about? My Maz Jr. is from 1998 and it hums more than I think it should. I tried swapping tubes etc. with little success.
Antti
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Post by cheycaster on May 23, 2006 11:37:34 GMT -7
I know one other difference in the 2x10 combos I have is: the verb model I have is a 01 and the NR one is a 05. The 01 cabinet is I think a half inch thinner than the 05 model. My verb model does not hum at all. Cheycaster ;D
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Post by guitargeorge on May 23, 2006 12:03:54 GMT -7
The reverb hum issue can be fixed by isolating the reverb jack mounted on the chassis from grounding on the chassis. (the reverb jack to be isolated is the one with the resistor connected to it) I removed the resistor carefully so I could reuse it,then removed the jack, made the hole in the chassis slightly larger and using an "o"ring and two nylon washers to isolate the jack from the chassis I reinstalled the jack. At this point check with a meter to see if the jack is not grounding to the chassis and then reinstall the resistor and on the ground side of the jack a piece of wire to run your new ground. I grounded the wire to a post on the board where the reverb grounds to but I heard you can also solder the wire to the reverb pot casing. This done and I had no more reverb hum, which was minimal at the least but still an annoyance when playing at low volumes. hope this helps.
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Post by amakitalo on May 23, 2006 14:20:38 GMT -7
Thanks, I may have try that. Yes, the hum is only apparent when playing at low volumes, but it still bugs me, as my Z28 is totally quiet.
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Post by dei305 on May 23, 2006 19:23:31 GMT -7
Guitar George, Great info! I think +1 Karma is well deserved! Many thanks! Rick
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Post by guitargeorge on May 24, 2006 4:15:27 GMT -7
the older MAZ 18's reverb hum was not an issue when playing out on a job, the air conditioners and background noise in the bar would render it inaudible, but at home when practicing at low volumes it was quite evident. I think owning a MAZ is a lot like having a hot Italian or British sports car, I've had many small things that added up to hum, buzzing and crackles but like I said they were small issues and were able to be fixed at no major cost ( dirty reverb cable connection, loose rectifier tube, bad tubes) If a maz could leak oil it probably would but I don't think you will find a better sounding amp out there. They have to be maintained, they are not just plug and play. I still get some weird overtones happening on certain notes but If I can remember correctly old Vox's and Marshalls were much worse for that happening, so I learned to live with that, on a live gig It is not even an issue. I guess what I'm trying to say is don't be afraid to go in there with a screwdriver and a can of Deoxit on a regular basis and tighten and clean things up from time to time, be careful because tube amps can kill you, but this is the key to having a MAZ 18 running at it's optimum peak performance just like that quirky sports car.
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Post by dei305 on Jun 7, 2006 20:08:37 GMT -7
Well I finally got my Blonde-oxblood grill cloth, 1-12 (G12H) Maz Jr w/verb, today. Killer amp with strats, LPs', teles', 345's. I put a GT12AX7M in V1 and the PI spot. The Xotic BB was made for this amp. Life is great! Rick
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