.45 Cowboy Special

[kagliostro]

Maybe I'll change the name to The Inferno

 

mmmm ....

in fact, changing the point of view it looks like a loudspeaker cone



 

Franco

[shooter]

when you get bored of the fixed bias sound, temp this in, you already have the tubes 

[SILVERGUN]

Round one of The Speaker Trials took place last night.
Here's the results from my least favorite with this amp down to the first round winner:
#4 - Eminence EM12 - handled the amp very well and was big and tight in the bass and low mids. It got nasally in the mids and was missing a lot of the shimmery top end. Punchy but not bright enough.
#3 - EVM-12L old school - the word "blaring" comes to mind. I need something with more EQ shaping and character. The upper mids right through the highs are just in your face. There is no escape and no where to hide. I wish I was that good, but I would definitely offend the listener.
#2 - Fane AXA100 alnico - this is my number 1 speaker in my current rig so I wasn't shocked that I like it. It is a great example of a great alnico speaker. It has that signature crispy breakup of alnico and handles highs as well as lows. It also eats up power with ease. The reason it came in second is because it wasn't as tight and well-voiced as the winner.
#1 - Celestion Creamback G12M-65 - had solid authority and some of the "woody" tone of a Greenback with added power handling. It has a distinct mid-voice that barks in the lows and sears in the upper freqs. The only thing I dont love about it is that it is lacking in sparkly highs, which would probably be appreciated by the audience. The feel, character and breakup of this speaker is perfect for what I was looking for.
(When I match this with a G12H-30 in a 2x12" it is money, but I'm building a 1x12" combo)


I did not test anything rated below 65 watts.
I will host round 2 tomorrow night and report back. Still got some good ones to go.
Over and out.

[jamaio]

When I match this with a G12H-30 in a 2x12" it is money...

This was my first thought until I read the next part.

... but I'm building a 1x12" combo.

I have 2x12 Bassman cabinet loaded with Creambacks and I love it!!

[uki]

The fuse holders for the high voltage are inside some sort of insulator?

[SILVERGUN]

The fuse holders for the high voltage are inside some sort of insulator?

520005-GY - 520 Series - Fuse Blocks Fuse Blocks Fuseholders and Fuse Accessories - Littelfuse

[tubenit]

Looking forward to a sound clip!  Hopefully sometime soon. 


With respect, Tubenit

[66Strat]

I also look forward to a sound clip. I would really like to hear the amp paired with the Fane alnico speaker.

[SILVERGUN]

I also look forward to a sound clip. I would really like to hear the amp paired with the Fane alnico speaker.

I'm glad you said something because I probably wouldn't have done that.
I just built this little speaker switcher because I got sick of doing the dance. (there is some residual solder on some of the contacts from re-using parts)
Maybe, on one of the clips I can go through a couple speakers and maybe you can hear what I hear. I'm not sure I have the recording quality, but we'll see.

[SILVERGUN]

Gettin there.
There is actually a microphone on a stand in the same room with me now. That is progress.

[shooter]

you're getting close to obsessive I see   

[jojokeo]

Gettin there.
There is actually a microphone on a stand in the same room with me now. That is progress.

Those two cabs on the right look familiar.

[Rontone]

I just had to pinch the fuse idea, found a little piece of chunky paxolin with threaded inserts in the scrap pile

[jojokeo]

Any progress on the speaker tests? Just be extremely careful as the censoring mods are active. We still have the 1st Ammendment these days (just not here). No Eb's of D#'s please and don't dare mention anything about a brown note. 😂🤣😇

[sluckey]

Any progress on the speaker tests? Just be extremely careful as the censoring mods are active. We still have the 1st Ammendment these days (just not here). No Eb's of D#'s please and don't dare mention anything about a brown note. 😂🤣😇

You're so cute... in your own mind.

[SILVERGUN]

Any progress on the speaker tests? Just be extremely careful as the censoring mods are active. We still have the 1st Ammendment these days (just not here). No Eb's of D#'s please and don't dare mention anything about a brown note. 😂🤣😇

Been busy due to tax deadline...
Worked my way back through the speakers I have on hand and none of them are cutting it for this amp.
I'm saving up for a G12H-75 Creamback.
Also taking some time between sessions to let my ears rest.
I'm still working on getting some recordings together to post. Didn't forget.

[66Strat]

Any progress on the speaker tests? Just be extremely careful as the censoring mods are active. We still have the 1st Ammendment these days (just not here). No Eb's of D#'s please and don't dare mention anything about a brown note. 😂🤣😇

Would that be E flatulent?

[shooter]

Been busy due to tax deadline...

E flatulent

Unum
 

[jojokeo]

Any progress on the speaker tests? Just be extremely careful as the censoring mods are active. We still have the 1st Ammendment these days (just not here). No Eb's of D#'s please and don't dare mention anything about a brown note. 😂🤣😇

You're so cute... in your own mind.

You took ownership, validated my point, AND not clever. Pick on somebody else.

[uki]

How is it going SG ?! I'm eager to hear some sound samples !!!

 

[SILVERGUN]

How is it going SG ?! I'm eager to hear some sound samples !!!

 

Just busy right now but still getting to it.
Sometimes, at the end of a build, it is important to sit back for a minute and learn how to be less critical of it. Accept it for what it is and stop trying to make it something else. That same thing holds true for who you are as a player. Stop worrying about who you can't play like and just play what you can play.
Everytime I go back to it, I dial it in a little differently, but recently I've discovered where my sweet spot is and I'm looking forward to sharing not only the clips but also my settings and why they are what they are.

My brain works by prioritizing a list from everything up to number 1 and right now recording is climbing that list.
Uki, thanks for your interest. Sometimes it takes a little push to get to number 1.

[Ed_Chambley]

Yes post your stuff Dave

[SILVERGUN]

<iframe width="560" height="315" src="

" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

[SILVERGUN]

I was able to make a quick recording last night while practicing this guitar solo.
So, although not a great amp demo, I hope this will give you guys an idea of how it is being used.
I have a delay/reverb in the effects loop and an Ernie Ball Expression overdrive on the front end.
I purposefully mixed the guitar signal louder than usual so it would stand out. This was recorded "live" with the music coming through the PA and my amp coming through the Creamback 65 at a stage-like volume..
I'll try to do more of an overall demo next time, but hopefully this will get me started.
TIME solo amp demo .45 by SILVERGUN | SoundClick

[brewdude]

That sounds great

[SILVERGUN]

Thanks guys
I think we need a LIKE button for the LIKE column

[shooter]

 
now you're pushing it

[sluckey]

Thanks guys
I think we need a LIKE button for the LIKE column

And we need a third LIKE button for these type posts!   

[SILVERGUN]

I want to be able to LIKE that you guys LIKE my post.
And then, I'd really like to be able to LIKE the fact that you LIKE that I LIKE that you LIKE my post.

now you're pushing it

[shooter]

 
I IDENTIFY as un-likable

[sluckey]

Have fun...

[SILVERGUN]

Yessss!

I IDENTIFY as un-likable

I've been waiting for a DONT LIKE button, so maybe sluckey can make that dream come true while he's at it

[PRR]

....a DONT LIKE button...

👎

[uki]

The amp does seen to sound really good, got amp only clip to hear it by itself ? that would be great !!

[SILVERGUN]

The amp does seen to sound really good, got amp only clip to hear it by itself ? that would be great !!

Coming soon
Thanks

[tubenit]

Any updates from the original schematic?



With respect, Tubenit

[SILVERGUN]

Any updates from the original schematic?



With respect, Tubenit

In the amp I have a .001 cap off of the wiper of the wet master. That cap is connected to a 500k trim pot (as a variable resistor) to ground. I have that resistance set to around 70k.
This is a treble dumper that I really haven't messed with. This is not on the schematic.
I have purposefully left it alone and just tried to stop tweaking and get to playing.


Like this:

[tubenit]

Thanks for the update!   Your amp and your guitar playing really sound great! 


The wet and dry approach entering opposite sides of the LTPI ........... and working out so well has surprised me.  Bravo!


With respect, Tubenit

[brewdude]

I was wondering about where you landed with regards to the effects loop/PI and NFB.
Does the schematic at the beginning of the thread reflect an accurate image of the amp in the demo?

[SILVERGUN]

Thanks for the update!   Your amp and your guitar playing really sound great! 


The wet and dry approach entering opposite sides of the LTPI ........... and working out so well has surprised me.  Bravo!


With respect, Tubenit

THANKS Jeff!
I look forward to posting more as time permits.

The success of the wet and dry approach surprised me as well, with the most surprising thing being: the amp sounds fine with the dry on zero or the wet on zero (not that I would set it that way on purpose).
I am referring to the PI as the DA now or "differential amplifier", since phase inversion is now accomplished before it gets there. (guys, please correct me or fill in the blanks if necessary)

[SILVERGUN]

I was wondering about where you landed with regards to the effects loop/PI and NFB.
Does the schematic at the beginning of the thread reflect an accurate image of the amp in the demo?

The posted schematic (plus the adjustment above) is about 99% accurate.
The amp has been sitting tubes up for the last month and I haven't changed anything. Just fiddling with knobs and FX.

I'll have to take it back to the shop to go over it one more time before I can say 100% for sure.
I have about 490V on the plates of the EL34s.
Power supply values were copied mostly directly from Dumble #183

[tubeswell]

That’s a real snappy sounding amp. What plate and screen voltage on the EL34s?

[SILVERGUN]

That’s a real snappy sounding amp. What plate and screen voltage on the EL34s?

I hate to admit it but I didn't write it down. Only know I have about 490V on plates.
But your question prompted me to think about my power supply.
I had forgotten that I used a 1K resistor in place of the choke, and smaller than typical screen resistors @ 220 ohm each. Now I'm curious what my actual screen V is.

I'll pull out the meter next week and give you a better answer.

[shooter]

Now I'm curious what my actual screen V is.

be more curious of current, the math is easy 


for extra fun;
sample at NO audio
sample at MAX audio