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Does your Mustang III, IV, or V have a note fizz problem?
I had the Mustang III with fizz! 46%  46%  [ 23 ]
I had the Mustang IV with fizz! 2%  2%  [ 1 ]
I had the Mustang V with fizz! 8%  8%  [ 4 ]
I had a Mustang III, IV, or V with no fizz. 44%  44%  [ 22 ]
Total votes : 50
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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Sun Jul 17, 2011 2:35 pm
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Roadie
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Here's a quick attempt to take a look at the fizz issue comparing a "clean" note from my mustang I with polishbroadcast's fizzy note. Somehow my "clean" note picked up a buzz going through the layers of software that it took to get it on youtube. I think the fizz still stands out though. When I get a chance I'll look into the fizzy part a little deeper with some specialized tools that I have. And maybe work at getting rid of the buzz too.

http://www.youtube.com/watch?v=D6H3gFU6e7o


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Sun Jul 17, 2011 3:02 pm
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johnjaypl wrote:
Here's a quick attempt to take a look at the fizz issue comparing a "clean" note from my mustang I with polishbroadcast's fizzy note. Somehow my "clean" note picked up a buzz going through the layers of software that it took to get it on youtube. I think the fizz still stands out though. When I get a chance I'll look into the fizzy part a little deeper with some specialized tools that I have. And maybe work at getting rid of the buzz too.

http://www.youtube.com/watch?v=D6H3gFU6e7o
That is pretty crazy. Thanks for posting. Do you think it is digital or analog? If digital, do you think it is a natural part of the digital processing that just isn't getting filtered, or some glitch being introduced?


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Sun Jul 17, 2011 3:46 pm
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Kudos to johnjaypl for stepping in here and trying to help. Very interesting youtube sample of the "fizz", looking forward to your future posts on this subject.


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Sun Jul 17, 2011 4:09 pm
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polishbroadcast wrote:
johnjaypl wrote:
Here's a quick attempt to take a look at the fizz issue comparing a "clean" note from my mustang I with polishbroadcast's fizzy note. Somehow my "clean" note picked up a buzz going through the layers of software that it took to get it on youtube. I think the fizz still stands out though. When I get a chance I'll look into the fizzy part a little deeper with some specialized tools that I have. And maybe work at getting rid of the buzz too.

http://www.youtube.com/watch?v=D6H3gFU6e7o
That is pretty crazy. Thanks for posting. Do you think it is digital or analog? If digital, do you think it is a natural part of the digital processing that just isn't getting filtered, or some glitch being introduced?


I need to dig a bit deeper before I can describe it better. I think it's fair to say that if no effects are being used and you get this behavior it's not natural- digital or analog. What I need to do is look at every peak and see if it's a harmonic that belongs there. It would be interesting if there are harmonics that don't belong there.

I did try putting a notch filter around the fizzy part and it does help clean it up. I'm pretty sure that the area that I highlighted is the problem.


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 10:29 am
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I took a bit of a closer look at what's happening and it's pretty clear that the Mustang III in the fizzy sample that I have is turning up the gain on the higher frequency harmonics and the noise around thoses frequencies is being pumped up too.

Here's a shot of the spectrum of my Mustang I taken at three differnt times. First, at the pluck (Blue), then after .5 sec, (Green), then after 1.0 sec (Red). The harmonics die out the way guitar harmonics always dies out when effects aren't involved. The high frequencies go first the the low frequencies hang around the longest.

Image

A zoomed in pic of the Mustang 1 around some of the higher frequencies

Image
Here's the mustang III with the fizz. Notice that the highs aren't going away very quickly.

Image
Here's a zoomed in shot of the fizz
Image
It sure does look to me like some kind of compressor effect is in play with the Mustang III fizz, one that sweeps the frequency of maximuim compression down over time. Something like that.

Is this the kind of fizz everyone hears or are there other kinds of fizz in play?

John


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 11:08 am
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I've got my mustang III for about 3 weeks now.
Don't have the fizz.
I only have problems when playing my gibson in the mid position.
When I strike the strings hard it seems like a speaker blowned up sound.
This is only with the clean settings.
With the distorted and high gain settings I've got no problems.

I've heard the soundclips, but I think thats a totaly different problem from what I got.


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 11:09 am
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I have this fizz you are talking about, which is very quiet and frankly hard to heard and on top I have a buzz which reminds of underpowered DSP or close to a broken speaker rim. The volume is barely below the notes being played.

As some people mentioned before, I think there are more than one issue.


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 12:01 pm
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Exactly. I have only the "quiet" fizz (which I think a lot of guys have, but haven't noticed). The "loud" fizz basically renders your amp a brick.


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 12:48 pm
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My MIII has the same fizz as in your clip. My amp is currently in the shop waiting on warranty repair/replacement.

Mark Robinson
College Station, Texas


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 2:25 pm
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Location: Dublin, Ireland
Hi All,
My MIII , early serial no. model, never had a fizz problem except
for the early ( pre v1.6 Firmware Update ) problem of "tail-end buzz"
which was cleaned up by v1.6 .
I've always played with full volume on both p/us. using a Volume pedal
in the FX Loop and keep the Gain in Clean Presets at 4 or below.
Live playing. No problems !
Just today I decided to use the High Impedance Volume Pedal into the
amp input, and then at very low volume pedal levels, I got a touch of
the "fizz-monster" for the first time !!! - quick ! - back to the Volume
pedal in the FX loop !!!
This would seem to suggest that the amps input requires a pretty large
signal to work with for clean-sampling, then into the Power amp section, so
anyone using the guitar pickup's volume pot to control their sounds may be
at risk of the signal breaking into fizz at low pot levels. It's not like using a
valve amps input, as many of the Mustangs new owners were accustomed to.
Not a cure for the problem, but may help someone, while "Waiting for Godot".

Jim


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 2:42 pm
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jimfdr wrote:
Just today I decided to use the High Impedance Volume Pedal into the
amp input, and then at very low volume pedal levels, I got a touch of
the "fizz-monster" for the first time !!! - quick ! - back to the Volume
pedal in the FX loop !!!
Twist! That is interesting. Have you tried with and without the volume pedal in multiple venues?


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 3:24 pm
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Hi polishbroadcast,

I always play live with the volume pedal in the loop, with a small EQ stompbox
just to buffer the High Impedance Volume pedal and maybe boost or finetune
the Power amp slightly to suit various venues - with pretty
average mains, coloured neon lights, Christmas lights-still - crystal balls 'n all !
I only use a basic mains surge protector, not for cleanup purposes, just to protect
the MIII against a large spike or surge if it comes along.
Both guitar (EpiSheraton II) volume pots set to max. Playing live needs a setup to
be as foolproof as possible - twiddling with pots is out. Selecting Presets quickly
mid-song with the 4 Button F/S is quite enough to cope with. The MIII dishes it
out pretty well - the speaker is well and truly broken-in by now.
The full-on guitar input seems to surmount the dreaded fizzzz.... and what a
huge sound it throws out as well !

Jim


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 5:03 pm
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Musicmaster2 wrote:
Exactly. I have only the "quiet" fizz (which I think a lot of guys have, but haven't noticed). The "loud" fizz basically renders your amp a brick.


I don't think there are two fizzes, and here's why. I searched from the beginning for the fizz to see if I should return the amp right away. No fizz. Three weeks later I first noticed a very subtle fizz. Over the next few weeks it has become louder and louder. The amp is now ungiggable.

I think they all have the fizz--it's only a matter of time.

Waiting for an announcement from Fender.


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 5:35 pm
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@ johnjaypl

Great plots that show the problem ... nice work! Thanks for taking the effort!

KenB


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Post subject: Re: Does your Mustang III, IV, or V have a fizz problem?
Posted: Mon Jul 18, 2011 5:48 pm
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Aspiring Musician
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Joined: Sun May 09, 2010 6:41 pm
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Dude, I wished you worked for Fender! You're way ahead of them!


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