fearful troubleshooting

[mkrtu9]

Today I finished a few things in my diy fearful cab. I put in the 3012LF and the eminence pxb2 800 crossover. I don't have my alpha 6a yet so I didn't hook that up of course. I had a 1/4" jack laying around so I hooked that up to see how it sounded. It sounded pretty good until I hit the E string and there was a crackling sound and it seemed to fade in and out a bit. It made this sound throughout the E string and some of the lower A string notes. It was like it would crackle when the speaker had motion. I made sure all of the + and - were correct and the solder joints were ok.

Would I have problems if I didn't have the 6a hooked up to the crossover?

My other thoughts would be simply that the speaker or the crossover are defective.

Any help would be appreciative.

Thanks

 

[mkrtu9]

Today I checked my guitar cable and that wasn't it. I then unhooked the crossover and attached the speaker directly to the jack and it still did the same thing. I would therefore assume it is the speaker.

Would the jack produce problems such as this?

 

[Rick Auricchio]

Is the cabinet well sealed, no air leaks anywhere?

What is installed where the Alpha 6a belongs? You can't just leave a big hole!

 

[BurningSkies]

I'd also suggest making sure that all of your fasteners are indeed tight. My experience was that it did take a shake down or two to get it so there weren't any sympathetic vibrations happening. Make sure that speaker is cranked down tight and then go through the handles, connector mount, feet, grille, etc.

 

[mkrtu9]

to answer your question Rick I haven't cut the 6a hole so it is just a sealed box. However I found the problem.

Where the two wires come out of the speaker and go into the - + terminals, one was loose. Loose as in one of them was not connected into the little metal clamp at all.

So FYI if anyone has any thing similiar.... check the TERMINALS!

Cab sounds good now!!

thanks

 

[solarplexus]

Sorry to revive an old thread but I have the same crackling noise problem. Seems to come from the magnet air port on the back. I will check the same wires as you hoping it is the same thing. Is it common to have a defective 3012LF? Bought mine from Leland.