Egnater Seminar Head Schematic :-)

erigm · Post by **erigm** » Sat Jan 30, 2010 5:16 pm

sah5150 wrote:I've never even tried the loop. I put an adjustable line out in mine and run my setup W/D/W.

Click This Link for Image of My Egnater W/D/W Setup Which I can't Include Directly Because of the Silly 800 Pixel Limit for Pictures Which I do Not Understand

Steve

Wow, so you use this as your main amp. That is cool. I think the spec sounds awesome, and I use something very similar in my modded Traynor YRM-1. I don't slave it though ... at least not yet.

mensur · Post by **mensur** » Sat Jan 30, 2010 8:47 pm

I'm pretty sure that this is close to real thing,and It has a few things to fix.From the seminar video I saw that LOW input jack has a voltage divider(don't know the values), What is the purpose of the FSW, is it a parallel resistance, or is it acts as a divider?
http://www.fileden.com/files/2008/12/25 ... eminar.JPG

sah5150 · Post by **sah5150** » Sat Jan 30, 2010 9:16 pm

mensur wrote:I'm pretty sure that this is close to real thing,and It has a few things to fix.From the seminar video I saw that LOW input jack has a voltage divider(don't know the values), What is the purpose of the FSW, is it a parallel resistance, or is it acts as a divider?
http://www.fileden.com/files/2008/12/25 ... eminar.JPG

As I said, it is not close to the real thing.

Steve

sah5150 · Post by **sah5150** » Sat Jan 30, 2010 9:19 pm

erigm wrote:
sah5150 wrote:I've never even tried the loop. I put an adjustable line out in mine and run my setup W/D/W.

Click This Link for Image of My Egnater W/D/W Setup Which I can't Include Directly Because of the Silly 800 Pixel Limit for Pictures Which I do Not Understand

Steve
Wow, so you use this as your main amp. That is cool. I think the spec sounds awesome, and I use something very similar in my modded Traynor YRM-1. I don't slave it though ... at least not yet.

I don't slave mine either. It runs directly into the mono 4x12 it is sitting on. That is my dry signal. I then take the line out to the Axe-FX, which I use for stereo micropitchshift and a bit of delay. The stereo outputs of the Axe-FX go into the stereo inputs of my VHT 2/50/20 power amp and then out to the stereo cab that the rack is sitting on. Pretty much a Wet/Dry/Wet setup with the effects out of the stereo cab and the dry signal out of the mono 4x12. Sounds good! Can't wait to hear the amp I'm building through this setup replacing the Seminar head...

Steve

erigm · Post by **erigm** » Sun Jan 31, 2010 12:50 am

sah5150 wrote:
erigm wrote:
sah5150 wrote:I've never even tried the loop. I put an adjustable line out in mine and run my setup W/D/W.

Click This Link for Image of My Egnater W/D/W Setup Which I can't Include Directly Because of the Silly 800 Pixel Limit for Pictures Which I do Not Understand

Steve
Wow, so you use this as your main amp. That is cool. I think the spec sounds awesome, and I use something very similar in my modded Traynor YRM-1. I don't slave it though ... at least not yet.
I don't slave mine either. It runs directly into the mono 4x12 it is sitting on. That is my dry signal. I then take the line out to the Axe-FX, which I use for stereo micropitchshift and a bit of delay. The stereo outputs of the Axe-FX go into the stereo inputs of my VHT 2/50/20 power amp and then out to the stereo cab that the rack is sitting on. Pretty much a Wet/Dry/Wet setup with the effects out of the stereo cab and the dry signal out of the mono 4x12. Sounds good! Can't wait to hear the amp I'm building through this setup replacing the Seminar head...

Steve

Oh, I got you. That is cool, and I'm sure it sounds fantastic! Is the replacement the amp that you posted a schematic to a while back, with the switchable gain stages and all?

erigm · Post by **erigm** » Sun Jan 31, 2010 12:52 am

mensur wrote:I'm pretty sure that this is close to real thing,and It has a few things to fix.From the seminar video I saw that LOW input jack has a voltage divider(don't know the values), What is the purpose of the FSW, is it a parallel resistance, or is it acts as a divider?
http://www.fileden.com/files/2008/12/25 ... eminar.JPG

mensur, look at the schematic I posted a while back and you will see how the low input voltage divider works.

Yes, the footswitch works as a voltage divider. It parallels the 1M gain pot, and works with the resistor in series before that. It you don't have a footswitch plugged in then the amp is always in "high gain" mode.

sah5150 · Post by **sah5150** » Sun Jan 31, 2010 2:24 am

erigm wrote:Oh, I got you. That is cool, and I'm sure it sounds fantastic! Is the replacement the amp that you posted a schematic to a while back, with the switchable gain stages and all?

Yup. I've actually been updating my progress on the build in a thread in this subforum. The board is almost done. Check it out!

Steve

mensur · Post by **mensur** » Sun Jan 31, 2010 5:21 am

sah5150 wrote:
mensur wrote:I'm pretty sure that this is close to real thing,and It has a few things to fix.From the seminar video I saw that LOW input jack has a voltage divider(don't know the values), What is the purpose of the FSW, is it a parallel resistance, or is it acts as a divider?
http://www.fileden.com/files/2008/12/25 ... eminar.JPG
As I said, it is not close to the real thing.

Steve

I don't understand, I drew it from the seminar video,as I said I think it's 4,7K, don't know for sure.Snubber caps are on all 3 gain stages(I think values are between 220p/470pF), to give roll off 7.5KHz/3.5KHz. The rest is like the real ting.Steve would you point us to the errors,please?

MGW · Post by **MGW** » Tue Aug 30, 2011 2:46 pm

I know that most of you guys are smart enough to figure this out a LOT faster than I did, but to save the time of those who haven't quite arrived at that level....here is the jack wiring. Drawing it up was quick...something this simple finally making sense took a while. Don't know that I've felt that dumb in a good long while. Oh well...new territory. Thanks to all of you who have gone before. I know this isn't much, but maybe it'll help someone.

mensur · Post by **mensur** » Sun Apr 08, 2012 5:45 am

Hi guys,
Here is the complete 100% accurate schematic:
http://img813.imageshack.us/img813/5662 ... arhead.png" onclick="window.open(this.href);return false;

erigm · Post by **erigm** » Sun Apr 08, 2012 11:58 am

mensur wrote:Hi guys,
Here is the complete 100% accurate schematic:

That's awesome Mensur ... nice work!

A couple of things though. First, I know from pictures that the first stage anode resistor is 150k. Second, the tip terminal of the clean jack should go to the preamp volume control, not the coupling cap. The switch terminal goes to the coupling cap. Just reverse those two, otherwise the clean input won't work.

mensur · Post by **mensur** » Sun Apr 08, 2012 8:31 pm

The last link is corrected, thank ergim. First plate is 100K, I have original layout, so the guys who built it in seminars, must have change it to increase gain, so the stock value is 100K.

0ff58c · Post by **0ff58c** » Sat Jun 02, 2012 2:53 pm

Why do not view the complete schematic drawing of the seminar egnater Mensur. Thank you Martin Smolák (CZE)

I apologize in advance for bad English.

frenchie · Post by **frenchie** » Mon Jun 04, 2012 12:52 pm

0ff58c wrote:Why do not view the complete schematic drawing of the seminar egnater Mensur. Thank you Martin Smolák (CZE)

I apologize in advance for bad English.

because the copyright infringement thought police like to fuck in ass small guys posting schematics with one or two mistakes , but not marshall and all the big players who ripped off dozens of indépendant designs but who have the means to pay their way through ?

welcome to earth

they should have named their hosting site .... imageSHAFT

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Egnater Seminar Head Schematic :-)

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