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11-03-2010, 07:58 AM
| | |  SWR SM 900 Never Ending Problems... Please help me!
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Last edited by Gokhan91 : 11-10-2010 at 02:48 PM.
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11-03-2010, 08:07 AM
| | Registered User | | Join Date: Jan 2008 Location: Niagara Falls, NY | | | You bought a second hand amp that's 12 years old so now SWR sucks? lol. |
11-03-2010, 08:11 AM
| | Registered User | | Join Date: Feb 2005 Location: Edmonton, AB, Canada | | | There is no other way to convey what I feel about your situation than this...
*facepalm*
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Fender Jazz bass + Tone Hammer + Aguilar AG500 + Traynor 412 + loud.
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11-03-2010, 08:26 AM
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Last edited by Gokhan91 : 11-10-2010 at 02:48 PM.
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11-03-2010, 08:28 AM
| | Registered User | | Join Date: Nov 2009 Location: The Netherlands | | | Bring some eggs and bacon to rehearsal. That's what I would do.
__________________ Quote:
Originally Posted by gkbass13  I'm going to go ahead and preemptively +1 my own post. | |
11-03-2010, 08:30 AM
| | | | by the way i read exactly the same situation in 2 or 3 sm 900 that is not old.. |
11-03-2010, 08:33 AM
| | Registered User | | Join Date: Jan 2008 Location: Niagara Falls, NY | | Quote:
Originally Posted by Gokhan91 I bought this amp because its genuine SWR, not fender! | also lol. The "fender" SWR makes quality amplifiers. |
11-03-2010, 08:38 AM
| | Registered User | | Join Date: Sep 2010 Location: Long Beach, CA | | Quote:
Originally Posted by sevenyearsdown You bought a second hand amp that's 12 years old so now SWR sucks? lol. | I bought a brand new one back in 97 and it sucked. Thank God GC had a 30 day return policy. Took it back and got me a nice GK. |
11-03-2010, 08:38 AM
| | Registered User | | Join Date: Aug 2006 Location: Inverness, FL | | | If you guys can't even try help him, why post?
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The Official Fender Precision Bass Club #40, Official Gallien-Krueger Club, reverbnation.com/moderncavalier . <-My punk/southern rock band.
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11-03-2010, 08:43 AM
| | Registered User | | Join Date: Jan 2008 Location: Niagara Falls, NY | | Quote:
Originally Posted by powellmacaque If you guys can't even try help him, why post? | Well first off, dude edited the part of his post that was getting the responses in question.
OK I'll help.
If you don't like SWR gear buy something else.
If you do like the amp and would like to continue using it, stop saying SWR sucks and find a reputable repair place that can diagnose and fix the amp.
/end thread. |
11-03-2010, 08:49 AM
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Last edited by Gokhan91 : 11-10-2010 at 02:48 PM.
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11-03-2010, 08:58 AM
| | Registered User | | Join Date: Sep 2010 Location: Long Beach, CA | | Quote:
Originally Posted by Gokhan91 I'm thinking to sell the sm 900 and buy an eden wt1205... | Maybe a good idea. For what it's worth, the short time that I owned one it seemed to always run hot. Like it was normal for that amp. |
11-03-2010, 09:02 AM
| | Registered User | | Join Date: Mar 2007 Location: White Plains | | I'll give it a go... Quote:
Originally Posted by Gokhan91 When I turn the power on and start to play, in 1 minute the fan comes on and never stops. Even though the fan activates, the amp gets too hot that I can't touch it. I know that this is not normal... | What cabs are you running and what are the ohm ratings on them? Exactly how are they hooked up to the amp?
It may be completely normal. I'm not that familiar with SWR to know for sure, but if it's hot the fan is going to run. Quote: |
The second problem is power amp clipping. The power amp clip comes on when I play with my band and I can't open my volume to high levels. This amp is a 900 watt amp but it sounds like it is 100 or less.
| What bass are you using? Is it active or passive? If it's active, how are the controls set on the bass itself? How are the controls set on the amp itself? Quote: |
What can be the problem?? I'm thinking that it can be the tube or the amp get too old that there is some major damages in it.
| It's possible, but until you answer the other questions I've asked it's impossible to tell. Right now it sounds like user error to me... Quote:
I read about this problem at other 2-3 more sm 900 that is not old!!!!!!!!!
I'm thinking to sell the sm 900 and buy an eden wt1205...
| 2-3 years isn't that old, but it doesn't mean electrical components can't fail during that time. It really depends on how the thing is used.
Now, considering yours is 20 years old, I'm not sure what relevance that has.
If you don't like it sell it.
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11-03-2010, 09:03 AM
| | Registered User | | Join Date: Oct 2003 Location: San Diego, CA, USA | | | For what it's worth, I owned an SM-900 with the same exact problem as yours. Fan would come on immediately, face plate was very hot to the touch, etc.
It wasn't until the amp went into thermal protection and shut down that I got rid of it.
That amp runs hot. If it's in a rack, take it out of the rack and put a fan in front of it...or better yet, make a portable air-conditioner part of your gig rig.
A tech can't fix what is essentially a design flaw.
There may be a possible fix: the fan on the SM-900 is both undersized and has no exhaust. It just either pushes outside air in or pulls it out. Mine pushed the air in, but the hot air had nowhere to vent. If you drill some holes in the outer case or the faceplate, that might help with the ventilation problem. |
11-03-2010, 09:13 AM
| | Registered User | | Join Date: Jun 2009 Location: University Place, WA | | | Running lower than 4 ohms by chance?
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BBE Maxcom > Genz Benz Shuttle 9.0 > SWR Goliath Senior 6x10
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11-03-2010, 09:19 AM
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Last edited by Gokhan91 : 11-11-2010 at 11:08 PM.
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11-03-2010, 09:22 AM
| | Registered User | | Join Date: Mar 2007 Location: White Plains | | Quote:
Originally Posted by Gokhan91 my amp is 12 years old. I use 2 cabs in stereo mode and they are both 8 ohms (one 2x10 and one 1x15). my bass is active ken smith. I boost only mid sometimes on the bass and others are flat. I tried the amp eq flat and the problem goes on. | Where are the rest of the controls on the amp? I'm mainly interested in the Gain and Master Volume. Which input are you plugging the bass into?
Are you sure you're clipping the power amp? How do you know?
Unless I'm reading the manual wrong, running two 8 ohm cabs in stereo mode is only going to run 175w to each cab...
What cabs are you running anyways?
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Last edited by bassgod0dmw : 11-03-2010 at 09:29 AM.
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11-03-2010, 09:28 AM
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Last edited by Gokhan91 : 11-11-2010 at 11:08 PM.
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11-03-2010, 09:32 AM
| | Registered User | | Join Date: Jun 2009 Location: University Place, WA | | | Have you tried it with just one cab, or any others?
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BBE Maxcom > Genz Benz Shuttle 9.0 > SWR Goliath Senior 6x10
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11-03-2010, 09:33 AM
| | Registered User | | Join Date: Mar 2007 Location: White Plains | | | Try one thing at a time...
Leave the bass plugged in to one input or the other. I'd go with the active input.
You shouldn't really need to mess with the gain once it's set if you're always using the same bass. Set it so that the light barely comes on when you're hitting the strings your hardest during normal playing.
Adjust the master from there for the volume you'd like.
Did you see the other question I asked in the last post?
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