Hedd 192 triode question

krytikal1 · 11th February 2009

I turned on my rta the other day to look at some line noise stuff (just geeking out) and noticed something with the hedd. when i turn the triode knob i get this subsonic signal generated. it shows from about 15hz and below. if i turned it all the way fairly quickly it clipped my amplifier and made it go into fail safe mode for a few seconds.

anyone run into this before? or can anyone who has an analyzer and the hedd192 twist the triode for me and see if they see any change in that range. it was on the ad process 24 bit.

just for clarification, there was no audio running, and zero noticeable noise on the scope with the triode at zero (process still in). no trouble with pentode or tape process. the unit is brand new from the factory, and the power is fairly clean on a balanced transformer system from equitech.

thanks in advance,

k

MASSIVE Master · 11th February 2009

It's normal. Luckily, I've never had an urge to use it in a mastering situation.

But try it on bass... And vocals... It can be very, very cool...

mercurydime · 11th February 2009

'tis true that a little bit of 'triode' goes a long way on a stereo mix...as do the other three controls...use judiciously, that's for sure!

i will give it try on vocals soon. will be tracking some in the next few days, and my client has a voice that could use a little heft, as it were...

regards,

bob katz · 11th February 2009

Quote:

Originally Posted by krytikal1

I turned on my rta the other day to look at some line noise stuff (just geeking out) and noticed something with the hedd. when i turn the triode knob i get this subsonic signal generated. it shows from about 15hz and below. if i turned it all the way fairly quickly it clipped my amplifier and made it go into fail safe mode for a few seconds.

anyone run into this before? or can anyone who has an analyzer and the hedd192 twist the triode for me and see if they see any change in that range. it was on the ad process 24 bit.

just for clarification, there was no audio running, and zero noticeable noise on the scope with the triode at zero (process still in). no trouble with pentode or tape process. the unit is brand new from the factory, and the power is fairly clean on a balanced transformer system from equitech.

thanks in advance,

k

The Triode in the HEDD is a little iffy and may have some DC offset in it. I don't use it much anyway.

BK

MichaelPatrick · 11th February 2009

Quote:

Originally Posted by bob katz

The Triode in the HEDD is a little iffy and may have some DC offset in it. I don't use it much anyway.

BK

I can confirm the DC offset in my unit. I too use it very little if any.

I agree with John - it's really better for tracking certain sources that could benefit from increased LF energy. When I do use it I always check for DC and usually filter LFs.

streetvibes · 13th February 2009

Dudes, with all due respect,
dont forget to freak out every ones in a while!

i love to blast mine on mixes; giving the head a highpassed signal, tweaking pentode & triode, then bringing the bass back up afterwards; coll on some material!

MichaelPatrick · 14th February 2009

Quote:

Originally Posted by streetvibes

Dudes, with all due respect,
dont forget to freak out every ones in a while!

i love to blast mine on mixes; giving the head a highpassed signal, tweaking pentode & triode, then bringing the bass back up afterwards; coll on some material!

This is a mastering forum and what you are describing is music-making.

MEs don't usually freak out ones, or twos, while making music because they leave all that to musicians.

Sput · 27th May 2009

Same here!
I was actually about to post that same question when I checked out this thread.

I have to say I never really went past 2,5 on that knob, but since I discovered that big bump in the lo's I'm kind of scared to use it at all!!

Regards,

J

Spartacus · 28th May 2009

It's not a problem when using DC offset filter after the HEDD,

I personally do love the Triode for electronic music when you feel too much the plugs & ITB mix, it gives that texture and a bit of mud which bring life to some "cold" tracks.

Alécio Costa · 28th May 2009

I do use TRIODE frequently, despite of the increased noise floor.

I sometimes manually drive TRIODE at the beginning/end of songs, so I can get a peak noise floor of -80/-78.

11th February 2009	#1
krytikal1 Gear addict Join Date: Jan 2007 Location: Portland, OR. Posts: 442 Thread Starter	Hedd 192 triode question I turned on my rta the other day to look at some line noise stuff (just geeking out) and noticed something with the hedd. when i turn the triode knob i get this subsonic signal generated. it shows from about 15hz and below. if i turned it all the way fairly quickly it clipped my amplifier and made it go into fail safe mode for a few seconds. anyone run into this before? or can anyone who has an analyzer and the hedd192 twist the triode for me and see if they see any change in that range. it was on the ad process 24 bit. just for clarification, there was no audio running, and zero noticeable noise on the scope with the triode at zero (process still in). no trouble with pentode or tape process. the unit is brand new from the factory, and the power is fairly clean on a balanced transformer system from equitech. thanks in advance, k

11th February 2009	#2
MASSIVE Master Lives for gear Join Date: Mar 2004 Location: Chicago (Schaumburg / Hoffman Est.) IL Posts: 2,632 Verified Member	It's normal. Luckily, I've never had an urge to use it in a mastering situation. But try it on bass... And vocals... It can be very, very cool... __________________ John Scrip - Massive Mastering, LLC - www.massivemastering.com Spoon-feed a newb some answer and he'll mix for a day - Get him to think about it and figure it out for himself and he'll mix for a lifetime --- JS

11th February 2009	#3
mercurydime Gear nut Join Date: May 2008 Location: Eastern escarpment of the Blue Ridge Mountains Posts: 147	'tis true that a little bit of 'triode' goes a long way on a stereo mix...as do the other three controls...use judiciously, that's for sure! i will give it try on vocals soon. will be tracking some in the next few days, and my client has a voice that could use a little heft, as it were... regards, __________________ ------------------------------------------------ Stephen Blanton www.blantonemusic.com www.vinylrecordstocd.com www.wncw.org

28th May 2009	#10
Alécio Costa Lives for gear Join Date: Sep 2002 Location: Brazil, Florianópolis/SC Posts: 1,705 Verified Member	I do use TRIODE frequently, despite of the increased noise floor. I sometimes manually drive TRIODE at the beginning/end of songs, so I can get a peak noise floor of -80/-78. __________________ Alécio Costa Studio www.aleciocosta.com http://www.facebook.com/alecio.costa Artist career at: http://www.audiostreet.net/aleciocosta http://www.myspace.com/aleciocosta

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13th February 2009	#6
streetvibes Gear Head Join Date: Aug 2007 Posts: 54	Dudes, with all due respect, dont forget to freak out every ones in a while! i love to blast mine on mixes; giving the head a highpassed signal, tweaking pentode & triode, then bringing the bass back up afterwards; coll on some material!

27th May 2009	#8
Sput Gear addict Join Date: Jul 2005 Posts: 331	Same here! I was actually about to post that same question when I checked out this thread. I have to say I never really went past 2,5 on that knob, but since I discovered that big bump in the lo's I'm kind of scared to use it at all!! Regards, J

28th May 2009	#9
Spartacus Gear maniac Join Date: Dec 2006 Posts: 262	It's not a problem when using DC offset filter after the HEDD, I personally do love the Triode for electronic music when you feel too much the plugs & ITB mix, it gives that texture and a bit of mud which bring life to some "cold" tracks.

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