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HELP!! Amp "farting"

I wish you lot would give OP a break as he struggles to understand and communicate clearly. I'm not even sure which cab is louder for a given knob position.

I've done what I can and think the lights on now. The cab he picked up "looked" like it would work better than the 410 he had. I think the OP has learned something about important cab specs and from the sound of things the excursion of those speakers (something no mainstream cab maker publishes) is just insufficient for the OP's needs.
I believe the SWR 610 will be a BIG improvement.

Always play before you pay. :)
 
Also (as just a side thought), how is the pickup height towards your E string?
Maybe backing it off a little will improve a more even response if you still find yourself hitting a wall with the speaker and EQ adjustments.

I had this happen with a hastily cobbled-together bass that I took to a gig. I adjusted the pup height between sets and the problem went away.
 
Your cab is working properly then, it's just the wrong cab for what you're trying to accomplish. You likely get more for it selling it privately than trading it in, but in any case, take your amp and your bass and hook it up to that SWR 610 and see what you think about that one.

I may do this...if I can move it fast. I have a gig coming up in a week or so & don't want my farts to be heard by the crowd.
 
So, I stopped into L&M to try to deal on the SWR 6x10...and someone made a deal over the phone 4 hours before I came in. -_-

So, now I have to find a different cab. *sigh* And I need to get it before Dec 14th.

I'm thinking of this one:

http://www.long-mcquade.com/product...aflex_PF-410HLF_4x10_800_W_Bass_Enclosure.htm

Good/Bad? Yes/No? 800W @ 8Ohms with a sensitivity of 101 dB SPL @ 1w/1m, which means I'll be pushing 350W into it from my PF-500...should be a much better fit given that the cab would be more like 400W by what you guys told me earlier??
 
I'd avoid an HLF model. They are extremely bottom heavy and get muddy easily. Better to find an HE model IMO. Better yet find an old SWR Goliath cab. Or an old Eden XLT or XST cab. They can be found cheap and work great.

Given my financial situation, I have to go with something that's available via Long & McQuade. They don't carry SWR anymore (The 6x10 was a used model from before they dropped the line) and Eden isn't one of their lines, either. They don't have a 410HE in the Portaflex line, but they do have one in the SVT line. It's $130 more than the 410HLF and only rated to 500W @ 8Ohms with a Sensitivity of 98dB (max SPL of 122dB). It's also 18lbs heavier. :S

http://www.long-mcquade.com/product.../Ampeg/SVT410HE_-_4x10_Bass_Cab_with_Horn.htm