EVH 5150 + Impulses? How do?

[SwambA]

Thought I'd share this from the guy(Howard Kaplan
Fender EVH Engineering) who made the EVH 5150 100 watt and 50 watt for Fender...


Quote:
Originally Posted by swamba
Sorry Howard, I don't mean to be a pain but could you tell me if its ok to leave my speaker cable unpluged from the speaker out of my 5150 50watt, there by shorting the output, for long periods of time? Will this hurt the amp or does shorting it out protect it from damage? I put a cable in the headphone out while still connected to the cab, but you can still hear a small amount of sound coming out of the speakers. If its not ok I will buy some sorta hotplate or dummy load. I'm am getting some really great results running staight out of the preamp, direct into a custom impules response, but would like the amp to be completly silent.

Thanks for your help Howard!!!!!


Howard:
If you are using the preamp output and are worried about the speaker load issue do the following. Put a jack or cable into the headphone output or connect a head set if you are using them to monitor the sound that is going into your 'impulse response' device. (I have no idea what this is. Is it for recording?). If the small amount of sound you hear from the speaker is bugging you, disconnect the speaker cable AT THE HEAD and the amp will them be driving a short. THIS IS OK even if the amp was not muted by a cable connected to the headphone jack. Shorting, the output is actually a better situation for the amp than leaving it open which will shorten the tube life.

In summary, disconnect the speaker cable at the head. Connect a dummy plug to the headphone jack or a headset. Connect you device to the preamp output and stop worrying. And if you forget to connect something to the headphone jack to mute the amp, do not worry as long as you do not have an open cable connected to the speaker outputs.
__________________

 

[Backe]

http://www.thomann.de/gb/palmer_pdi03l16.htm

 

[Rex Rocker]

Thought I'd share this from the guy(Howard Kaplan
Fender EVH Engineering) who made the EVH 5150 100 watt and 50 watt for Fender...


Quote:
Originally Posted by swamba
Sorry Howard, I don't mean to be a pain but could you tell me if its ok to leave my speaker cable unpluged from the speaker out of my 5150 50watt, there by shorting the output, for long periods of time? Will this hurt the amp or does shorting it out protect it from damage? I put a cable in the headphone out while still connected to the cab, but you can still hear a small amount of sound coming out of the speakers. If its not ok I will buy some sorta hotplate or dummy load. I'm am getting some really great results running staight out of the preamp, direct into a custom impules response, but would like the amp to be completly silent.

Thanks for your help Howard!!!!!


Howard:
If you are using the preamp output and are worried about the speaker load issue do the following. Put a jack or cable into the headphone output or connect a head set if you are using them to monitor the sound that is going into your 'impulse response' device. (I have no idea what this is. Is it for recording?). If the small amount of sound you hear from the speaker is bugging you, disconnect the speaker cable AT THE HEAD and the amp will them be driving a short. THIS IS OK even if the amp was not muted by a cable connected to the headphone jack. Shorting, the output is actually a better situation for the amp than leaving it open which will shorten the tube life.

In summary, disconnect the speaker cable at the head. Connect a dummy plug to the headphone jack or a headset. Connect you device to the preamp output and stop worrying. And if you forget to connect something to the headphone jack to mute the amp, do not worry as long as you do not have an open cable connected to the speaker outputs.
__________________

That's for the mini, tho, isn't it? The 100W doesn't have a headphones out, AFAIK.

 

[SwambA]

Location: Phoenix
Posts: 20
Quote:
Originally Posted by swamba
Hay Howard, I read this on another forum "Usually, there must be a load on the speaker outputs at all times, but with the 5150 III the outputs are automatically shorted when there's no speaker connection, so there's no need for a load." Is this true? I'm thinking its not but if it is, is the 50watt the same way?


Howard:
Same as the 100W and yes this true if NO CABLE is plugged in. What you do not want to do is to have a speaker cable plugged in with no load at the other end. This removes the shorted jack connection which is only shorted if no cable is plugged in. This then presents a very high impedance back to the plates of the tubes which is not a good thing. It will shorten the life of the tube, but the amp will not burst into flames or anything crazy like that.
__________________
Howard Kaplan
Fender EVH Engineering

I know its scary, but he did make the amp.
I've been doing it on the 50 watt for over week and nothing has happened so far!? I trust him but like I said it still is scary!

 

[electricred]

That's for the mini, tho, isn't it? The 100W doesn't have a headphones out, AFAIK.

Howards stated that ALL current Fender amplifiers have the speaker output shorted when nothing is connected. The headphone trick is only if you're wanting to be double sure, if that makes sense.

 

[Wookieslayer]

Howards stated that ALL current Fender amplifiers have the speaker output shorted when nothing is connected. The headphone trick is only if you're wanting to be double sure, if that makes sense.

that is effing cool! I now have more GAS for the 50w mini 5153!!!

 

[sn!ppet]

I did this a few weeks ago with my 5150. I liked the sound of the FX Send through my DI better than the Pre Out, for whatever reason. Put the amp into play mode (both switches activated), take the preamp tap from the FX Send into your DI, and insert a shorted (connections bridged) cable into the FX Return. This ensures that you won't get any output sound from your cab, but that the cab is still doing its job by providing the proper load. Load boxes and attenuators are dumb and expensive, just do it this way, it's cheap and super easy and won't damage anything.

But that way there's no poweramp saturation right?

 

[Mago]

I think I once did that with my 6505+ and the FX loop.

Fx loop on, cable from fx send to interface. cable from fx return to a guitar (to have a load).
Speaker out connected to the cab.
That worked pretty well, even if there was still some small amount of bleed in the speaker hearable.
Only inconventient thing was that I still had the post gain of the channel at 2.5-3 to get a good signal without too much noise.
So if for some reason I had deactivated the fx loop it would have gotten loud.
But it worked.

OH yeah, and of course I turned down the volume of the guitar too. guess it could get ugly if you get some noise inthe the fx return, since the peavey doesnt have a master volume for the poweramp

Still doesn't sound as good as micing up a cab tho

 

[JakeAC5253]

But that way there's no poweramp saturation right?

Correct.