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faulty speaker cable, any damage done?
Post by callumwegener on Jan 5th, 2017, 03:55am

today at band practice, I was jamming and noticed my sound drop out a few times over 30-45 mins of playing. Thinking it was a guitar cable I switched it out, but after it happened again I jiggled the speaker cable and noticed it was that!

This is like my worst nightmare come true! It a good quality george l speaker cable i bought a few years ago. Probably used once a fortnight since then.

I always make sure my cable is firmly plugged in before switching on and it was this time. After switching out the speaker cable the amp worked fine for the rest of the rehearsal.


Im wondering if any damage may have been done to my amp? There was no smoke or anything blowing up.

Do the fuses in amp protect from any damage in a situation like this?
Re: faulty speaker cable, any damage done?
Post by callumwegener on Jan 5th, 2017, 03:55am

amp an SLO-100
Re: faulty speaker cable, any damage done?
Post by Giga on Jan 5th, 2017, 10:36am

99% chance there's nothing going on. As for the other 1%: time will tell.

And no, the fuses won't protect you from this kind of mishap. (unless it causes some really serious problem and then you'll have other things to worry about)

Giga
Re: faulty speaker cable, any damage done?
Post by callumwegener on Jan 5th, 2017, 11:38am

ahhh crap this has been such a bad day, I've always fussed over my SLO since I bought it new. But I guess this is life with amps, cables fail from time to time and I'll have to get over it.

Re: faulty speaker cable, any damage done?
Post by lynchfan6 on Jan 5th, 2017, 5:33pm

You'll be fine. Many years ago, I plugged my SLO into the wrong input jack on my cab and had no sound. Turned the amp off, back on again, nothing. Figured out what I had done and panicked, but the SLO fired right up no problem. Fast forward about 7 years, and just last month I was playing a gig and my sound cut out for a few seconds. Thought it was a power cable on my pedalboard cutting out a pedal, but no. Happened again a few times, and I replaced the speaker cable. Did it again, and then worked fine the rest of the gig. Found out a few days later that the input jack on the cab.......the wire that internally goes to the first speaker was hanging on by a thread, and literally fell off in my hand when I took the back off the cab. Could have been catastrophic. So, I think you'll be fine. The SLO and those trannies apparently let us get away with a few of these.
Re: faulty speaker cable, any damage done?
Post by callumwegener on Jan 5th, 2017, 7:30pm

shit yeah I always worried about that too, a faulty speaker cab jack. Good to know that I'm not the only one its happened too.

It really is one of those things we have to learn to diagnose quickly and live with. Unless people are replacing their speaker cables regularly in the hopes of avoiding this. But then again a new cable can also fail,

I've spoken to my tech who is an authorised mesa boogie repairer, he has some high quality German speaker cable and can make me up one of I want.

What speaker cables do you guys use yourself?

This was recommended to my by my Soldano rep, but they are on the pricier side:

http://www.analysis-plus.com/product/pro-audio/pro-speaker-cable/clear-oval-speaker-cables/


Re: faulty speaker cable, any damage done?
Post by Billielvis on Jan 9th, 2017, 04:46am

Hi All - I really recommend Pete Cornish cables -

http://www.petecornish.co.uk/cable1.html

happy playing all !

Ed
Re: faulty speaker cable, any damage done?
Post by callumwegener on Jan 9th, 2017, 08:45am

thanks I have emailed Pete and will place an order through him.

This is the cable that gave me the issues, might just post it here as a warning to others, mine had silver/nickel plugs unlike this one :

User Image
Re: faulty speaker cable, any damage done?
Post by callumwegener on Jan 10th, 2017, 03:49am

took the bastard george l speaker cable apart today, one of the pin/prod things had disintegrated on one end which caused the cable to short out.

have placed an order for a Pete Cornish cable, never again will I gamble with speaker cables.
Re: faulty speaker cable, any damage done?
Post by Billielvis on Jan 11th, 2017, 07:21am

distinguished choice of cable smiley
Re: faulty speaker cable, any damage done?
Post by callumwegener on Jan 12th, 2017, 06:34am

thanks for your help guys, I just wished I'd been a bit more knowledgeable about cables before buying into the George L hype. I now see what a piece of junk it was.

The Pete Cornish cable was on $20 extra compared to the George L, and is much better quality.
Re: faulty speaker cable, any damage done?
Post by JLB on Mar 5th, 2017, 6:53pm

All good no damage. Rock on.

LB
BCM
Re: faulty speaker cable, any damage done?
Post by callumwegener on Mar 7th, 2017, 6:45pm

Thanks for all your help Lynn! I really appreciate the fact that even though I didn't buy from you as I live in Australia, you always answer all my questions. A true gentleman smiley
Re: faulty speaker cable, any damage done?
Post by callumwegener on May 16th, 2017, 03:01am

Here's the official verdict from Mike, I'm sure he wont mind me posting this on here, as it might help other owners minds be put at ease if this happens to them:

"Though it's very bad for a tube amp to operate with no speaker load, it
sounds like your amp survived just fine. The SLO-100 is a very rugged amp
and I designed it to be able to occasionally endure less than ideal
operating conditions. Because your amp never blew the 1 amp fuse and is
still working fine after the speaker cable incidents, you have nothing to
worry about. Output transformer failures are almost always catastrophic -
that is to say that if you did do any damage to the output transformer,
you'd certainly know it. The amp would have little or no output volume, and
if it did make any sound at all, it would be very fuzzy and distorted (not
in a good way)."

grin