variac tests 02

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rgalpin
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variac tests 02

Post by rgalpin » Fri Jul 19, 2013 6:13 pm

ok - this is with the variac dial saying 90V - still not near club level - like a comfortable listening level in the room - sooprising.

strat78 - this is with the 6-band mxr in a smile curve - again sooprising! i never would have thought it.

mic'd a little closer - like a lot closer - mic almost touching the grill cloth.

here's what's REALLY sooprising - NO EQ in post. none. this is exactly what's coming out of the amp.

i put all 4 tubes in. it's not dimed anymore -
vol 6
treble 5
mid 10
bass 10
pres 3

what do you think?

if you like it - i have more!haha! i love playing it - it - you can't stop playing it b/c it feels so so good. :hairband:
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Re: variac tests 02

Post by vanhalen5150 » Fri Jul 19, 2013 6:23 pm

:shock:

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Re: variac tests 02

Post by efraser68 » Fri Jul 19, 2013 6:56 pm

This is still perplexing to me...a 100 watt amp, not attenuated, vol at 6 and only variac'd down to -90volts doesn't sound like it would be comfortable room listening level. Sounds great by the way :clap: Rob did you tell us already which EP Pre you're using?
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Re: variac tests 02

Post by vanhalen5150 » Fri Jul 19, 2013 7:18 pm

I agree. I don't understand how you guys are reducing the volume like you say with just the variac. Mine would absolutely rip a hole like that.
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Re: variac tests 02

Post by Strat78 » Fri Jul 19, 2013 7:44 pm

Rob, is your variac calibrated; could 70v be reading as 90v? Shannon, plug straight into the cab without the attenuator. Warm up the amp at normal voltage then start playing while adjusting the variac up from say 50v. Start with no sound then go up until it is feedback rich volume wise. If you have a bright cap on vol 1, dial back the pot to a spot that tightens things up a bit. It's sick!!!! Rob boosted the front with a smile curve not the ubiquitous frown curve. Wow, it is so simple! :champ: :champ:

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Re: variac tests 02

Post by vanhalen5150 » Fri Jul 19, 2013 8:32 pm

Im going to have a few more beer and give it a go in a bit.
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Re: variac tests 02

Post by rgalpin » Fri Jul 19, 2013 8:39 pm

cool. glad you guys are hearing what i'm hearing. the variac is not calibrated - i assume the actual is lower than 90 - but not sure the best way to test what voltage is hitting the amp... ?? watching LEGO movie CLUTCH POWERS!! will post more in a bit.

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Re: variac tests 02

Post by vanhalen5150 » Fri Jul 19, 2013 9:18 pm

Ok. I just got up to about 75v. Pretty much a little bit above room volume . I notice with each increment of about 2-3 volts I went up, there is a delay with the corresponding volume. Is that the heaters? I didn't try a boost of any kind yet. It sounds a little bright or almost thin. There is a 500pf bright cap on this 12002. Also has my haunted KT77s which sound bright anyways. Getting a bit of hiss noise as well. Everything dimed as well.

Ed had those variacs pointed upwards for a reason. Maybe one went directly to the heaters. :P
Last edited by vanhalen5150 on Fri Jul 19, 2013 9:43 pm, edited 1 time in total.
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Re: variac tests 02

Post by vanhalen5150 » Fri Jul 19, 2013 9:24 pm

Rob, just shut your amp off and check the voltage directly from the variac output plug. The dials are useless.
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Re: variac tests 02

Post by rgalpin » Fri Jul 19, 2013 10:40 pm

here's a clip where the voltage is even lower - this clip is like really low volume - low enough that it sort of makes you want to turn it up - but i think it came out a little better.

ep-pre and 6band settings - boost city on the mxr but no hiss when variac'd down low.
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Re: variac tests 02

Post by rgalpin » Fri Jul 19, 2013 11:47 pm

vanhalen5150 wrote:...there is a delay with the corresponding volume. Is that the heaters?
yes there is a delay it doesn't respond immediately to the adjustment.
vanhalen5150 wrote:... didn't try a boost of any kind yet. It sounds a little bright or almost thin.
the tone is completely reliant on the boost in front the way i'm doing it - and the adjustments on the high end of the eq curve can take you from OK to awful with just a little boost or cut. very touchy - it's like the sweeter tones live right next to the nasty ones and it's easy fall down a hole.

i have a 5600p on the bright cap vol I - makes it so that at 5 1/2 it sounds terribly thin and at 6 all the supporting low end appears very quickly but too far and it gets looser. so, i found the settings are very touchy.

so, what do you all think? i was very excited about it - then i went and watched a movie w my kids and came back with a fresh ear and started to hate on it. haha! the madness... :stars:

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Re: variac tests 02

Post by vanhalen5150 » Sat Jul 20, 2013 5:14 am

It's funny because my brains tells me it shouldn't work but it does. :lol: It really does give you the album tone in your face.
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Re: variac tests 02

Post by vanhalen5150 » Sat Jul 20, 2013 5:31 am

Captains Log, Plexidate: 07/20/2013

Backed the vol pot down to 6 and reduced the presence and treble down to 6 as well. Variac up to 85 now and the underlying hiss vanished! Must have been the heaters I think. Spock agrees.

Vol down to 3.5 and variac up to 90. Sounds like a Twin. Got my Fender plugged playing Cold Shot.

Vol up to 9, variac at 87. neighbor looking out window with a WTF expression.

Will try try 6band, 10band, original EP3 later today when native life forms are less hostile.
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Re: variac tests 02

Post by rgalpin » Sat Jul 20, 2013 6:54 am

logically, there must be a place in the amp where i can easily read the voltage coming in from the variac - so that i can check the voltage on the fly. actually i just remembered the variac has a meter right on it - all i have to do is look at it - DUH! :rockon:

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Re: variac tests 02

Post by rgalpin » Sat Jul 20, 2013 7:52 am

i have been comparing this tone to the album tone of meanstreet. by comparison, there is a sloggy chewiness to the tone i am getting compared to what you hear on the album. it's like the album tone is a swift catamaran skipping over top of the waves and my tone is a small raft slogging up and down fighting every wave. i am beginning to view the word CHEWY as something to be avoided when reaching for a good ed tone. it's not chewy. it's visceral and it's gliding over the wave tops, swift and light and mean.

what component, or components, are at the heart of this sloggy chewiness? i refuse to think that it's all playing technique - but it could be - but that's not what i hear.

when i dig into the strings, i hear so much detail, sloggy pick noise. like if you were to hear a recording of a voice speaking and you can hear the lips moving and smacking almost as loud as you can hear the voice. the voice of ed's tone, and maybe ALL good plexi tones, is 90% voice and very little lip smacking and chewy silibence. like electric motors propelling us across the wave tops with speed WITHOUT the detail of every little up and down wave, getting slogged around... it's almost like a lack of true detail is allowing the album tone to be more focused and penetrating - again, the catamaran skipping over the waves, very little detail - OVERCOMING the details of the slog of every wave that just slows you down, meticulously chewing every bite.

overly articulated to the point of slog!! :bang:

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