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Now thats something I didn't know!! I thought if it was on, that was a bad thing, guitar or no guitar!Steve Dawson wrote:You can have your amp on standby with no load connected, this is perfectly safe. You can also have your amp fully turned on with no load connected as long as there is no signal passing through it ie. guitar plugged in and played by somebody. The potential for damage is when the OP Tx tries to drive signal into an open circuit (no load).
This is definately a NO NO on the 100 Watt Vintage Modern. The HT (B+) on this amp is very high; - approx 530VDC and this is about as high as the KT66s will live happily at. If you remove the two outer or inner output valves the HT rises by about 20V due to less current getting pulled out of the Power Transformer and therefore less loading. The output valves will more than likely arc over causing damage to themselves as well as other components in the power stage.mety wrote:Here's another one...
If you remove the two outside poweramp valves (tubes) from a 100w amplifier, you can use it as a 50w amp.
Over to you Steve
GuitarRich wrote:Now thats something I didn't know!! I thought if it was on, that was a bad thing, guitar or no guitar!Steve Dawson wrote:You can have your amp on standby with no load connected, this is perfectly safe. You can also have your amp fully turned on with no load connected as long as there is no signal passing through it ie. guitar plugged in and played by somebody. The potential for damage is when the OP Tx tries to drive signal into an open circuit (no load).
CooL!
Definitely - but it is nice to know that if you do be stupid (I've nearly done it so many times! lol - don't plug in after a few beers! :oops: ) theres a chance you wont kill your amp if you catch it quick enough!SteveD wrote:It is still not advisable to have no load connected when the amp is fully turned on
Good Lord yeah, we've all been there :P I even thought I'd blown my amp once when the speaker cable wasn't in and then I plugged it in to NO sound .... 15 solid minutes of freaking out and then realising I'd accidentally pulled the guitar cable out by about 2 mm too !!!! lolGuitarRich wrote:Definitely - but it is nice to know that if you do be stupid (I've nearly done it so many times! lol - don't plug in after a few beers! :oops: ) theres a chance you wont kill your amp if you catch it quick enough!SteveD wrote:It is still not advisable to have no load connected when the amp is fully turned on
Yeah, that is cool to know. I was trying out a dsl50 recently and the sales guy pulled out the speaker jack and plugged it into another cab while the amp was still on and I remember thinking what a f@#king idiot :)GuitarRich wrote:Definitely - but it is nice to know that if you do be stupid (I've nearly done it so many times! lol - don't plug in after a few beers! :oops: ) theres a chance you wont kill your amp if you catch it quick enough!SteveD wrote:It is still not advisable to have no load connected when the amp is fully turned on
When I was demoing VMs at Guitar Center I tried it through about 4 different cabs. The salesguy did the same thing and I thought the same thing.keiths_marshall wrote: Yeah, that is cool to know. I was trying out a dsl50 recently and the sales guy pulled out the speaker jack and plugged it into another cab while the amp was still on and I remember thinking what a f@#king idiot :)
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