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Post subject: Re: Low E string buzz
Posted: Wed Apr 29, 2009 7:04 pm
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Wrenchmonkey wrote:
Hi Everybody, I just picked up a SCXD last week and love it.

I have run into a problem today though. When I pluck an open E string, I get a buzz. Nothing else, just the open low E string. I have read through the forums here and removed the backing boards all together.

The problem is still there. Lightly touched the tips of all the tubes. No change to anything other than my fingerprints :shock: - just kidding, knew they would be toasty.

Anyway, not the tubes. There are what looks like two transformers maybe? The smaller of the two is the one giving me grief. I lightly touch it and the noise stops. Finger off, noise returns. The two screws holding it to the chassis seem tight.

Does this seem right to anyone? Is there anything I can do to stop this myself without having to put it into the shop for a couple of weeks? I still have my Peavey Windsor Studio to play so that is not to big a problem but I would rather do a quick fix on the Fender than let someone else touch her.

Thanks for the help


WOW! You put your hand in there while the amp was on? I wouldn't recommend you do that again.

Anyway, something is not right and you should take it back under warranty.


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Post subject: re: Low e string buzz
Posted: Wed Apr 29, 2009 7:45 pm
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Yeah, I was thinking I was going to end up having to take her back in. Hoping there was something I could do with it.

As for sticking my fingers in there with it running, I was thinking when I was doing it that this could all end up in a bad place. I have a little bit of high voltage experience, probably enough to be dangerous. :wink:

Thanks once again for the advice.


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Post subject:
Posted: Wed Apr 29, 2009 8:00 pm
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No problem. Wouldn't want to loose any posters on the forum. That would suck. :cry:


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Posted: Thu Apr 30, 2009 5:43 am
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I have figured out that if I stick a bit of rolled up electrical tape between the chassis and the PT that I can stop the buzz. Don't want to leave the tape there because it normally doesn't react to heat very well.

I have some thin rubber baffle material that I use in aircraft engine compartments that would do quite nicely though. I am going to try wedging a piece on the aft side.

I do not foresee any heat or torque issues. Does anyone have any insight that my lack of experience might not have picked up?

Thanks.


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Post subject: Re: Low E string buzz
Posted: Thu Apr 30, 2009 11:29 am
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Wrenchmonkey wrote:
Hi Everybody, I just picked up a SCXD last week and love it.

I have run into a problem today though. When I pluck an open E string, I get a buzz. Nothing else, just the open low E string. I have read through the forums here and removed the backing boards all together.

The problem is still there. Lightly touched the tips of all the tubes. No change to anything other than my fingerprints :shock: - just kidding, knew they would be toasty.

Anyway, not the tubes. There are what looks like two transformers maybe? The smaller of the two is the one giving me grief. I lightly touch it and the noise stops. Finger off, noise returns. The two screws holding it to the chassis seem tight.

Does this seem right to anyone? Is there anything I can do to stop this myself without having to put it into the shop for a couple of weeks? I still have my Peavey Windsor Studio to play so that is not to big a problem but I would rather do a quick fix on the Fender than let someone else touch her.

Thanks for the help


BBZZZZZZZZZZZZZZZZZZZZAAPPPPPPPPPPPPPPPOOOWWWWWWWWW!!!!!

:shock: AHhhhh aHAHHHH !!!

Toasted Marshmellos. . . :wink:

Welcome Wrenchmonkey,

You can always do like I did and just get a cab- the stock speaker won't resonate anymore and cause whatever you hear to vibrate- besides, it sure does sound good with the bigger speakers. :)


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Posted: Thu Apr 30, 2009 12:41 pm
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:lol: thanks !

I have been looking around here since I got the SCXD and am very happy to be a part of this forum. Looks like a bunch of respectable and knowledgeable people here.

I played around a little more a lunch today, I can make either the E string or now the A string buzz whatever it is (sounds like metal on glass or two light metal pieces vibrating together).

I like the idea of a cab though. I think you are right because if I play lightly no buzz. I dig in and it is back. It is not loud enough to cause unplayability but with everything turned down quiet at night it is a little annoying.♦

I have been going to try and build myself a cab but can't decide what the best combination of speaker size / manufacturer / model to use. Any suggestions?


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Posted: Thu Apr 30, 2009 2:40 pm
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Well, I'm not nearly as ambitious as you and some others who built there own cabs- all I did was watch Craigslist and pick up a 412 fender cab for $125 and while it's more speaker than I really need or want it still sounds pretty good.

If I was to make my own cabinet I would probably build a 1x12 (although I might be willing to compromise with a 2x12 so I could use the cab for other larger amps as well) and I would probably go with an Eminence 12" Ragin Cajun speaker since others claim they sound very good with this amp and give it so much more volume.

I don't know what kind of wood I would use off the top of my head, but I think if it's for "home use only" I personally would want it to look good and give it a nice wood finish, but if it's for band practice or gigs I would definitely give it a standard tolex exterior of some kind.

I don't know what company did this one, but I think it only cost the guy about $180 if I remember correctly. This SCXD is now a 1x12 cab and notice how tight the chasis is in front; it almost still looks like a 1x10 cab.

Is it worth $180 plus the cost of the new speaker? I don't know, that would turn your SCXD into a $600 plus amp and I guess everybody has to make their own call on that.

Image

Image


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Posted: Fri May 01, 2009 5:06 am
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That is a pretty nice looking cabinet! I was wondering about a 2x12 or maybe a 2x10. I have also notice the Ragin Cajuns seem to be the speaker of choice as well. I play mostly electric, delta and slide blues, wondering if they would be suited for that application.

A single 12 might not be such a bad idea though. I have a Windsor Studio with a Blue Marvel 12" in it. I think I will try plugging the SCXD into it and see what it sounds like.

I am planning on replacing the Windsor cab as well, it took some water damage from a flood. Still usable but starting to look like hell. Thinking softwood of some type with tinted varnish to look like my semi-hollow Peavey JF-1. Thought they would look nice with matching see through red finish with the cream cover and gold hardware / chassis face.

Thanks for listening and helping, I am finding this board to be a lot of fun and friendly.


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Post subject:
Posted: Fri May 01, 2009 1:23 pm
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Wrenchmonkey wrote:
That is a pretty nice looking cabinet! I was wondering about a 2x12 or maybe a 2x10. I have also notice the Ragin Cajuns seem to be the speaker of choice as well. I play mostly electric, delta and slide blues, wondering if they would be suited for that application.

A single 12 might not be such a bad idea though. I have a Windsor Studio with a Blue Marvel 12" in it. I think I will try plugging the SCXD into it and see what it sounds like.

I am planning on replacing the Windsor cab as well, it took some water damage from a flood. Still usable but starting to look like hell. Thinking softwood of some type with tinted varnish to look like my semi-hollow Peavey JF-1. Thought they would look nice with matching see through red finish with the cream cover and gold hardware / chassis face.

Thanks for listening and helping, I am finding this board to be a lot of fun and friendly.


Sounds good, I don't think it really matters what you plug into to notice the richer & fuller sound on SCXD with a bigger speaker- my Fender GE-412 has 4 old and very flat sounding 12s and it still sounds amazing IMO compared to the 10' stock speaker.

Some people really notice the detail that the stock speaker produces- in my case using a 412 I'm probably losing a lot of detail, but it's still worth it to me for the bigger sound. I honestly think 2x12 would be perfect.

I play a lot of blues (SRV style) and I still play some Led Zeppelin now and then- I guess I'm sort of a creature of habit and don't play much other stuff cept maybe some JH or my own junk.

Despite the name "Ragin' Cajun" (which sounds totally appropriate for any kind of blues), I think there may be other speakers that will nail that Delta sound better if your willing to spend more money, but for the money RC is a great all around speaker that will give you a lot more volume- so if your only going up to a 1x12 it seems like a really good choice.

However, if your willing to go 2x12 then maybe it will be worth your while to find something with less volume per speaker and more tone suitable for delta blues- I would try to find a speaker link with sound bites and check it out. If I find one I'll come back and share the link.

As you can see I'm not really the one to give technical or specific advice cause I just don't know enough about all the different speakers and amps except for what I read and much of that I have found is so much bs that it's not worth repeating.

I imagine a 1x12 on SCXD will have to work a little bit harder to sound as big as a 2x12, but it might sound even better in some ways just because of it. Still, I like the full rich sound of more than one speaker.

I hope your Windsor is 8 ohms- per SCXD specs- that's what it'll take.

Nice dreams on the cabinets too- that's exactly the style of cabinet work that I wouldn't mind doing myself as well- maybe someday when I've got a bit more time and money. Cheers!


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Post subject:
Posted: Sat May 02, 2009 12:45 pm
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I haven't tried the Peavey's 12" yet but I took the SCXD into the music store I got it from just to see what they would say. They were pretty good about it after telling me the usual - that is just the noise tube amps make - speech
:roll: and once I plugged it in and showed them. Also, getting the right guy at the store seems to make all the difference in the world. Once the original salesman was replaced by another guy I know, things got better.

We tried replacing the tubes and tightening all the screws. We found one of the power tube clip screws was broke in half and not really holding the clip down to the chassis. I really thought we fixed it once it was replaced.

No such luck. I am a little concerned we couldn't find the other half of the screw. Is that what is making the E / G sympathetic noise?

They didn't have another SCXD but are getting one in. They sent me home with mine and said to keep checking in for the new one to show up. If it is still doing it, they will trade me the new one for mine.

Pretty decent of them.


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Post subject: Re: SCXD woes
Posted: Sat May 30, 2009 4:27 pm
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Hiwhat wrote:
FloyDZeD wrote:
Well, I just bought a Super Champ XD last Thursday, and I've been playing it a lot lately. The thing sounds awesome! I can get any sound out of it.

Anyways, this morning I turned it on and it buzzes whenever I play an E. It's really apparent on the D and G strings. I was wondering: does anyone know why it's doing this?


I had the same problem and it`s not the DSP section - it´s the power tubes!

I swapped the EH 6V6 pair with beefier Tung-Sol 6V6GT tubes. That did the trick.

I know of at least two users who did the same to their amp - problem solved.





Just wondering which Tung-sol 6v6gt tubes that you bought. There are 3 different types on the Musicians Friend Website. Hard, Medium or Soft?

THX


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Post subject:
Posted: Mon Jun 01, 2009 8:02 am
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That is a good thing to try, I was told by the shop I picked up my SCXD from that it is a fairly common problem.

I had them swap out all the tubes, not just the powers, with no luck. So keep in mind it may not be the tubes.

Have not had much luck in getting a replacement amp either, I am starting to think I am being led down the path here.

That being said, a swap of the tubes is well worth a try, especially if the shop will let you try it for nothing!


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Post subject:
Posted: Mon Jun 01, 2009 8:13 pm
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Wrenchmonkey wrote:
That is a good thing to try, I was told by the shop I picked up my SCXD from that it is a fairly common problem.

I had them swap out all the tubes, not just the powers, with no luck. So keep in mind it may not be the tubes.

Have not had much luck in getting a replacement amp either, I am starting to think I am being led down the path here.

That being said, a swap of the tubes is well worth a try, especially if the shop will let you try it for nothing!



I hate to hear that. This amp sounds really awesome all except for the rattle. I hope that you are able to conquer the dreaded rattle in the future. I hope that I am as well. I paid 299.00 for mine brand new and I just couldn't pass that up so I will get to the bottom of it if I have to send mine back to Fender. You can't possibly record that amp without recording the rattle sound as well. I expect warranty assurance from Fender. Hopefully they will fix yours too. Thanks for your comments. I need all the help I can get.


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Posted: Wed Jun 03, 2009 8:10 pm
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I know I am going to get all kinds of warnings for this but I can make the buzz change if I move or squeeze the power transformer. :shock:

I am thinking it may be the PT case or something on the board in that area?

Another thing to note with mine is that the shop found one of the tube holder hold down screws was broke in half. They don't know where the upper half (inside the chassis area) is.

Maybe that is what is causing the buzz? I just hope it doesn't also cause a zap and a release of the magic smoke.


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Post subject:
Posted: Sun Jul 19, 2009 10:15 pm
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I have a SCXD that has an intermittent, crackling or static sound. It will happen especially when playing certain notes or intervals. I guess it sounds like a scratchy pot and the static cuts out the sound. It only occurs when playing however

I have tried known good cables, known good 12AX7, reseated tubes, tightened every screw, inspected for damage, and still no fix.

Anyone have luck resolving such a situation?

My next steps would be new power tubes and new 10" speaker.

Looking forward to your replies!


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