Author Topic: Quick techie question! (Amps and speakers) (Read 2906 times)

Blueminerva · « **on:** July 15, 2007, 06:50:25 PM »

Hey all! I'm sure one of you will be able to help me before I blow something up or electrocute myself.

Can I run my GH50L through the speaker in my Marshall AVT? There's an input on the back, but is that so that I can slave the amp out to other cabs or is it for the speaker itself?? Confused! Anyone know?

Woogie · « **Reply #1 on:** July 15, 2007, 06:53:49 PM »

You`'ll need to pull the speaker jack out then run your Laney into that. Make sure the ohm is the same!!

Blueminerva · « **Reply #2 on:** July 15, 2007, 06:56:38 PM »

It's an 8ohm speaker - this connects to the 8ohm socket on the laney right?

P.S. - do I need to turn the AVT on to use the speaker? If so, will that damage the head of the amp (considering it's not gonna be plugged in to anything)??

Finally - are speaker cables different from regular jack-to-jack instrument cables? Can I use a standard instrument cable to connect the head and the cab or will I break something?

dave_mc · « **Reply #3 on:** July 15, 2007, 07:26:03 PM »

you need to plug the lead/jack coming from the avt's speaker into the 8 ohm socket of the laney, as woogie said. The avt doesn't need to be turned on, i believe. EDIT: in fact, you'd be better not to turn it on- you'd be running the avt without a load, which can harm it.

I never had the guts to try it when my engl head arrived a few days before the speaker cab did, but i got cr@p advice too (not on here) where people didn't seem to even read my question. :lol:

it should work, as far as I'm aware.

Blueminerva · « **Reply #4 on:** July 15, 2007, 07:29:32 PM »

I turned it on and waited for a few secs, nothing happened. It might be working fine and the tubes just didn't have time to warm up, but I'm too scared to wait because the amp might explode or something. :lol:

dave_mc · « **Reply #5 on:** July 15, 2007, 07:31:19 PM »

check my edit as well, definitely don't turn on the avt!

Will · « **Reply #6 on:** July 15, 2007, 07:58:48 PM »

I think that if you turn it on, it will melt the transformer, and i'm sure thats a pricey bit of kit.

Blueminerva · « **Reply #7 on:** July 15, 2007, 08:01:00 PM »

I did turn it on but only for like 10 secs, no sound, turned it off. Surely it can't have melted in 10 seconds?

indysmith · « **Reply #8 on:** July 15, 2007, 08:01:52 PM »

Quote from: Blueminerva

I did turn it on but only for like 10 secs, no sound, turned it off. Surely it can't have melted in 10 seconds?

no that should be alright.

Blueminerva · « **Reply #9 on:** July 15, 2007, 08:03:08 PM »

There was no smoke or explosions so I assume it's ok :lol: no more tinkering for me though! I'll just have to wait til I can afford the speaker cab in 2 weeks. *sigh*

Twinfan · « **Reply #10 on:** July 16, 2007, 08:52:51 AM »

Quote from: Woogie

You`'ll need to pull the speaker jack out then run your Laney into that. Make sure the ohm is the same!!

Exactly. That will work fine. You sure that's what you did?

JamesHealey · « **Reply #11 on:** July 16, 2007, 09:11:17 AM »

most valve amps can be turned on and left on standby with no load, and most can also be full turned on.. it's when u start playing your guitar through it and the Output transformer starts cooking because it's an open circuit!

If you want to use the AVT as a cab for your Laney get a speaker cable, chop the end off solder it on to the speaker tags and then connect that to your laney. don't $%&# about with using inputs on the back of the AVT as a load to your laney.. it won't work.

And output transformers aren't cheap so be careful! :)