Eden WTX260 Help.

Jimmy74 · #1 10-26-2011, 11:09 PM

Hope all you guys can help me out here.

I brought a WTX260 to my workplace to jam. I paired it up with a Wharfedale 1x15 8hm speaker (this is what I got here, 2 of them in fact), start playing, sounded nice. But after about 1 hour, the volume from my amp input channel is gone, but volume from the 2 aux inputs of the amp is functioning ok, pumping out drum samples from my boss rc-2.

So I brought the amp home and connected it to my 1x 10 cab. Sounded ok again and played for an hour, no problem.

So, whats wrong with me pairing it up with the wharfedale? I heard that the amp's class d power circuit behaves oddly with some speaker. Is it that the crossover circuit inside the monitor speaker shutting out the main input channel?

Thanks guys!

Munjibunga · #2 10-27-2011, 12:01 AM

I had a similar problem with my WTX-500 at practice tonight. I was playing my Roscoe Beck V through it into an AE210, and I got just a very low volume through the amp. I wondered if it's because the RB5 is passive, but the volume was way too low even for that. I checked my cable and TU-2 tuner, and nothing seemed to help.

Until I noticed the mute button was pushed in.

Jimmy74 · #3 10-27-2011, 12:21 AM

Thanks! Definitely not the mute button.

I double checked all possibilities. By the way, the Wharfedale is a monitor speaker.

More advice please.

Munjibunga · #4 10-27-2011, 12:23 AM

Sorry. Shot my wad on that one.

steve_rolfeca · #5 10-27-2011, 12:48 AM

From what you've prevented so far, you can probably eliminate class D issues- micro amps sometimes react to bad house wiring, but you would expect to lose ALL output, if that were the situation.

Aside from that, you don't have enough info (or at least you haven't presented us with enough) for a diagnosis yet.

Any observations about the amp's behaviour prior to losing output from the instrument channel would be helpful:
- was the protect LED coming on?
- did the standby LED change colour?
- was the "set level" LED flickering on peaks?
- was the amp clipping or showing any other signs of audible distress prior to losing output?
- did the output start to fade out slowly, or suddenly drop off?
- did the amp make any other noises prior to losing output?

Amps with aux inputs and/or effects loops, will sometimes lose output because of a dirty jack, or because on of the "normals" in the loop jacks is stuck. Sometimes, the fix can be as simple as inserting a spare cable into each jack on the front and back a few times.

There are a couple of important things to do prior to your next jam:
- pre-test your cables at home, wiggling them to check for intermittent faults, and take an extra one with you to the jam.
- take your own cab as a control
- take an AC outlet tester, to verify that the AC outlets is wired correctly (probably not the issue, but better safe than sorry)

If the symptoms re-occur, you need to be systematic about your testing procedure. If the instrument input stops working, but the drum machine is still working through the AUX jacks, you need to try all the possible combinations:
- Will the drum machine work through the instrument jack, using the cable that was plugged into the AUX jack?
- Will it work if you swap the drum machine cable, for the one you were using with your bass?
- Will the bass work through the AUX input, using either cable?

If you follow this type of logical elimination process, you should be able to narrow down whether you have a bad cable, a bad jack, or an possible intermittent fault in the amp itself.

Munjibunga · #6 10-27-2011, 12:57 AM

Steve, you're giving me a headache.

Jimmy74 · #7 10-27-2011, 01:06 AM

Thanks Steve!

- was the protect LED coming on?
No

- did the standby LED change colour?
No

- was the "set level" LED flickering on peaks?
No. The input gain level is set to prevent clipping.

- was the amp clipping or showing any other signs of audible distress prior to losing output?
No, as above.

- did the output start to fade out slowly, or suddenly drop off?
Fade out, and never back.

- did the amp make any other noises prior to losing output?
No.

- Will the drum machine work through the instrument jack, using the cable that was plugged into the AUX jack?
No.

- Will it work if you swap the drum machine cable, for the one you were using with your bass?
Have yet to try this.

- Will the bass work through the AUX input, using either cable?
Ok, I forget to mention that I brought the amp to a tech to diagnose the possible issue immediately after the gig. When we connected the amp into another 15" cab, all the jacks (input, aux, fx return)were tested okay with the same instrument cable. But there was a point when we tried the input jack again, the volume started to fade in and fade out. When the volume got back to normal, I decided to bring it home and played for an hour with my 10" cab with no problem.

You may be right with the intermittent issue. Guessed I would have to retry the amp with the wharfedale cab to see if the problem persist.

But before doing that, can I be sure that the amp can work with a monitor speaker? This one:
EVP-X15M - EVP-X SERIES - Wharfedale Pro

steve_rolfeca · #8 10-27-2011, 09:50 AM

Quote:

Originally Posted by Munjibunga

Steve, you're giving me a headache.

This is why tech geeks don't get invited to parties...

HolmeBass · #9 10-27-2011, 09:56 AM

I would try further testing with a different cable from the bass to the amp. I had a monster fail on me just this past summer and it was the same sort of thing- it got quieter, not completely cut off. It took me a while at home to determine that it was the cable. Of course I got the replacement for free.

steve_rolfeca · #10 10-27-2011, 10:22 AM

Quote:

Originally Posted by Jimmy74

Thanks Steve!
...Will the bass work through the AUX input, using either cable?
Ok, I forget to mention that I brought the amp to a tech to diagnose the possible issue immediately after the gig. When we connected the amp into another 15" cab, all the jacks (input, aux, fx return)were tested okay with the same instrument cable. But there was a point when we tried the input jack again, the volume started to fade in and fade out. When the volume got back to normal, I decided to bring it home and played for an hour with my 10" cab with no problem.

But before doing that, can I be sure that the amp can work with a monitor speaker? This one:
EVP-X15M - EVP-X SERIES - Wharfedale Pro

Fading in and out doesn't sound like a loose connection. Perhaps the compressor circuit is acting up? You could verify this by pulling the knob, to defeat it. If the trouble clears, then you have a band-aid solution, and your tech will have a better idea of where to look for the problem.

Playing through a monitor wedge should have no bearing on the problem. If anything, a well-designed 2-way cab should present an easier load to drive. Besides, I ran my ENX260 cranked to the max on numerous gigs, driving a pair of 3-way cabs.

Rick Auricchio · #11 10-27-2011, 10:54 AM

Have you tried a different instrument? If your bass is active, it could be a weak battery.

Everyone missed this?

perkidan · #12 10-27-2011, 11:23 AM

I had one that did basically the same thing. It isn't around anymore.

Jimmy74 · #13 10-27-2011, 11:38 AM

Quote:

Originally Posted by Rick Auricchio

Have you tried a different instrument? If your bass is active, it could be a weak battery.

Everyone missed this?

Thanks! My bass has an active/passive circuit. I was using the passive circuit for the whole time. And I tried the bass & cable on an roland cube guitar amp to verify its working ok.

Quote:

Originally Posted by perkidan

I had one that did basically the same thing. It isn't around anymore.

Whats exactly the problem before you finally wrote it off?