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Troubleshoot Fender Rumble Bass Cab

B

borgward

Sep 28, 2006
378
140
#1
Fender Rumble Bass 4ohm 4 X 10 Cab Intermittently sounds like it has blown driver. I am using a JBL PRX415M Main cab as a spare. so I don't think any of my equipment is the problem. . I am thinking of bypassing the crossover unit to see if it is the problem.
 
#2
The crossover doesn’t affect the woofers. Are you sure it’s not an intermittent cable? Are you using the SpeakOn input? Does your cable use genuine Neutrik plugs or knock-off plugs?

Also, your cabinet is not a Bassman (a different model).
 
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#3
agedhorse said:
The crossover doesn’t affect the woofers. Are you sure it’s not an intermittent cable? Are you using the SpeakOn input? Does your cable use genuine Neutrik plugs or knock-off plugs?

Also, your cabinet is not a Bassman (a different model).
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"don't think any of my equipment is the problem" Used a variety of cables that work with other equipment, The female connector is whatever was installed in the cab at the factory.

The cabinet is Fender Rumble Bass 4 ohm 4 X 10. What to look for in the drivers?
 
#4
borgward said:
"don't think any of my equipment is the problem" Used a variety of cables that work with other equipment, The female connector is whatever was installed in the cab at the factory.

The cabinet is Fender Rumble Bass 4 ohm 4 X 10. What to look for in the drivers?
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That’s what literally everyone says when they have a problem.

A knock-off plug can damage the SpeakOn jack. Can you try it with the 1/4” jack to rule out a damaged jack?
 
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#7
There is also the possibility of an intermittent connection at the speaker terminals or an internal wire coming in contact with the speaker cone. Turn the cab on it’s side and then on it’s back and see if anything changes.
 
#9
borgward said:
That would be any 1/4" male plug?
After eliminating the plug and socket what's the next step to diagnosing the driver, drivers?
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Yes, a male 1/4" plug that would be found on a 1/4" speaker cable.

Do all drivers make the same noise?

Does your cabinet do this with another known good amp?

Have you eliminated all pedals from your rig to be sure it isn't from that?

Have you tried a known good bass (a different one than you are currently testing with)?
 
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#11
You'll have to excuse agedhorse. They guy is very knowledgeable but not very tactful. I believe he is talking about the connection between your amp and the cab. Your cab has the option for two different types of connections, either a 1/4'' cable or a speakon. He's saying if you're using a speakon that isn't made by Neutrik it can damage the speakon jack on your cab. If you have been using the speakon connection, try the 1/4'' to see if that helps.
 
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#12
BJMtz said:
You'll have to excuse agedhorse. They guy is very knowledgeable but not very tactful. I believe he is talking about the connection between your amp and the cab. Your cab has the option for two different types of connections, either a 1/4'' cable or a speakon. He's saying if you're using a speakon that isn't made by Neutrik it can damage the speakon jack on your cab. If you have been using the speakon connection, try the 1/4'' to see if that helps.
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Where have I not been tactful?

Did I do something to you to deserve this comment?
 
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#13
Already used different amp, Bass, and instrument cable. No pedals, tuners. Can't tell which one, ones, or all 4 is squawking. Will get to the innards. and check wiring and connections. I think I should see if the cone is damaged once I get the front cover off. Possible that the driver coil is the problem?
 
#14
BJMtz said:
You'll have to excuse agedhorse. They guy is very knowledgeable but not very tactful. I believe he is talking about the connection between your amp and the cab. Your cab has the option for two different types of connections, either a 1/4'' cable or a speakon. He's saying if you're using a speakon that isn't made by Neutrik it can damage the speakon jack on your cab. If you have been using the speakon connection, try the 1/4'' to see if that helps.
Click to expand...
I was wondering what speakon was. Oh I see that on sound system equipment. The JBL PRX415M Main cab I am using as a Bass cab has them.
 
#15
Most Rumble cabinets have at least one SpeakOn jack starting before 2010.

You may NOT see any damage visually, often it’s completely hidden.

You might want to get a little help from someone more knowledgeable and experienced than you are before you create new and worse issues. It will probably be less expensive in the long run.
 
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#18
In addition to all the things others have said about using different cables, basses, etc to isolate the issue, i would also recommend taking the rig outside if possible. Lots of time room vibrations can mimic speaker damage, especially with larger cabs like a 4x10.
 
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#19
borgward said:
Saw a Peavey 4 ohm 1 X 15 Bass cab with Peavey Squareback driver. I know what Black Widow drivers are. What's the difference?
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The drivers with the square magnets were older, low quality stock drivers that were used primarily for low cost. The Scorpions and then the Black Widows were both significant upgrades to the other drivers.
 
#20
BJMtz said:
To me, maybe. But I’ve read plenty of your posts and have seen others also be offended by your tact. You’re smart, your know you’re stuff. But you lack nuance with interpersonal communication.
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C’mon, I deal with folks every day doing technical support. Those very few who are offended generally have an agenda of some sort or other.

I don’t know what your problem is with me, I don’t even know who you are or recall any interactions with you.

Please butt out of this conversation, it doesn’t even involve you.
 
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