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B15N Tube Preamp DI Build Report

#121
Feral Feline said:
+1
I hate it when threads suddenly disappear and all the good info along with them.


Well, I've been calling it the "Azumpeggi" or "Azpeggi" (Azure, Ampeg, Reddi). However, there's got to be a better name for it than what I've come up with there.


Please do! Red box, white faceplate, stylised red maple leaf on faceplate. Maybe call it "Maple Bud" for its syrupy sweet chocolate tone...

I used to love these, well, still do:
user-image-1199909767.jpg

There's a FecalBrook campaign to get them made again.



Excellent suggestion and while I see the negative connotations some might have with serpents, I think there is nothing wrong with having a snake as a company mascot. Weasel, I can see a very real problem with that as a corporate image.



I think they're a heavenly combination.



Turbo Beaver!
Click to expand...




HMMMMMMMMM MAPLE BUDS.......

Now, what??? Wait?!? Let's focus! B15 preamp!
 
#122
Too bad "DIamond" is already taken.

Initially inspired by conversation in the Breeder thread, then just rambling on whatever comes to mind...

"Dear DIary"
"Tone DIary"
"DIabola"
"DIal Tone"
"DeIty"
"Tone adDIct"
"B15n adDIct"
"Tone BeneDIction" or just "BeneDIction"
"ASP DIscovery 1"
"DIscerning Tone"
"DIlicious"
"Tone DIorama"
"DIorite"
"DIabase"
"Tone DIlivery"
"DIll Pickler"
"DrIver" or "Dr. Iver"
"DIn" or "DIn 15"
"DIlectable"
"DImeD"
"DI Wrecked"
"Tone DIstillery"
"Bee 15 Pre-Madonna"
"Madonna"
"Feverett"
"Tone Huller"
"Hull 2000" Invalid Link Removed
"Hull Odyssey" "Hull Tone Odyssey" "Hulltone"
"Jess Pursang"
"JOT" (Jess Oliver Tone), "JOTone" JO-Tone" "JOB15n" "JOP" (Jess Oliver Pre)
"Oliver"
"Olive Branch"
"Oliver Oiler" "Oliver Tone Oiler" "OTO" "XVO" (Extra-Virgin Oliver)
"Aurora Borealis" or "Northern Light"
"Hudson Honey"
"Bee Fif-tone"
"Torontone"
"DIvine"

"DIvine Port" "DIvine Portafleck"
"Ruby" "Ruby Port" "Vintage Port" "Sherry" *"Apera"
[Due to a Wine & Spirits agreement between Canada and the European Union (CEWSA June 1 2004), from Dec 31st 2013 the term "Sherry" cannot be used for fortified wines made in Canada. Instead, the Canadian Wine Industry has adopted a term from the Australian Wine Industry *"Apera" to replace "Sherry", which comes from Andalusia, Spain. Apera is a wine fortified with the addition of brandy, fruit spirit or alcohol derived from fermenting a food source distilled to no less than 94% alcohol by volume. Apera fortified wine ranges from dry to sweet. Canada has ceased to use (as of Dec 31, 2013) geographic indications for wines and "ports" ex Chablis, Champagne, Port, Porto and Sherry — CEWSA Article 12(1)]

Further tip of the hat to Jess Oliver: "Frantoio" "Arbosanna" "Arbequina" "Mission" (Link Removed, and a few other recommendations for olives in Canada) "Leccino", "Maurino", "Casaliva", "Taggiasca"
[Olives are now being grown in Canada: Link Removed, Globe & Mail, and [Invalid or Expired Link Removed]]


"Forté-Plex"
 
#123
For our home/studio work the exotic tubes fill the bill. For consistency when you are sending units out, when tubes need to be field replaceable with the same tone and available possibly worldwide, some of the commercially available tubes are the choice.

Playing live I've found that the newer ones are less idiosyncratic and I end up playing the whole pre rather than trying to pull the nuances from that 1944 NOS JAN Black Plate. Knowing full well that the Sylvania has all these other qualities I'm wondering would this gig have sounded better with that choice...or wait that Tung Sol.

It is a tribute to the builders and design that we can actually hear the distinctions. If it's in my DI for FOH and I can't hear it, I don't want it doing all those things that I would play with when tracking in a studio. I need to give a sound person I may have just met, a consistent tone.
 
Last edited:
#124
Feral Feline said:
Too bad "DIamond" is already taken.

Initially inspired by conversation in the Breeder thread, then just rambling on whatever comes to mind...

"Dear DIary"
"Tone DIary"
"DIabola"
"DIal Tone"
"DeIty"
"Tone adDIct"
"B15n adDIct"
"Tone BeneDIction" or just "BeneDIction"
"ASP DIscovery 1"
"DIscerning Tone"
"DIlicious"
"Tone DIorama"
"DIorite"
"DIabase"
"Tone DIlivery"
"DIll Pickler"
"DrIver" or "Dr. Iver"
"DIn" or "DIn 15"
"DIlectable"
"DImeD"
"DI Wrecked"
"Tone DIstillery"
"Bee 15 Pre-Madonna"
"Madonna"
"Feverett"
"Tone Huller"
"Hull 2000" Invalid Link Removed
"Hull Odyssey" "Hull Tone Odyssey" "Hulltone"
"Jess Pursang"
"JOT" (Jess Oliver Tone), "JOTone" JO-Tone" "JOB15n" "JOP" (Jess Oliver Pre)
"Oliver"
"Olive Branch"
"Oliver Oiler" "Oliver Tone Oiler" "OTO" "XVO" (Extra-Virgin Oliver)
"Aurora Borealis" or "Northern Light"
"Hudson Honey"
"Bee Fif-tone"
"Torontone"
"DIvine"

"DIvine Port" "DIvine Portafleck"
"Ruby" "Ruby Port" "Vintage Port" "Sherry" *"Apera"
[Due to a Wine & Spirits agreement between Canada and the European Union (CEWSA June 1 2004), from Dec 31st 2013 the term "Sherry" cannot be used for fortified wines made in Canada. Instead, the Canadian Wine Industry has adopted a term from the Australian Wine Industry *"Apera" to replace "Sherry", which comes from Andalusia, Spain. Apera is a wine fortified with the addition of brandy, fruit spirit or alcohol derived from fermenting a food source distilled to no less than 94% alcohol by volume. Apera fortified wine ranges from dry to sweet. Canada has ceased to use (as of Dec 31, 2013) geographic indications for wines and "ports" ex Chablis, Champagne, Port, Porto and Sherry — CEWSA Article 12(1)]

Further tip of the hat to Jess Oliver: "Frantoio" "Arbosanna" "Arbequina" "Mission" (Link Removed, and a few other recommendations for olives in Canada) "Leccino", "Maurino", "Casaliva", "Taggiasca"
[Olives are now being grown in Canada: Link Removed, Globe & Mail, and [Invalid or Expired Link Removed]]


"Forté-Plex"
Click to expand...

Wow, so much thought put into it! I needed to give the faceplate fabricator a design so I just went with P15. I figured it's distant enough from the product but you still know what it is (kind of like the pedals VT bass, or SFT) . I went down the path you did and felt it was getting too complicated and not in the spirit of what this unit actually is.

Per the discussion on the Mustang...its actually the P51, not the P15.
 
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#125
I was away for the weekend for a nice getaway, so I didn't get the chance to reply to the thread for a while.

stevensivak said:
what amp is being used and what if any speakers?
or are your recordings direct?
- observation/question: why are these
boxes oriented narrow to the front- running
opposite as to how most or all amps are oriented?
Click to expand...

The recordings are all direct from the XLR out. There are no added effects such as eq, compression, etc.

The box is narrow to allow the power transformers and AC mains to be distant from the audio circuitry. The dimensions are perfect for such an implementation.
 
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#127
aborgman said:
IF it drives out at the point where the "external amp" jack on the B15 is -

It will drive a preamp.
It won't drive a PA poweramp due to output/input impedance issues.

So I'm assuming you have some sort of driver stage that isn't "B15" hung off the end.
Click to expand...

Output impedance is low due to driver/transformer output stage. It will drive a poweramp.
 
#129
Azure Skies said:
Wow, so much thought put into it! I needed to give the faceplate fabricator a design so I just went with P15. I figured it's distant enough from the product but you still know what it is (kind of like the pedals VT bass, or SFT) . I went down the path you did and felt it was getting too complicated and not in the spirit of what this unit actually is.

Per the discussion on the Mustang...its actually the P51, not the P15.
Click to expand...

I was just having fun playing around with words, it's what I like to do. :smug:

I think "P15" is perfect! :hyper: As you say, it gets the point across. :thumbsup: Still needs a Maple Leaf somewhere, though, eh? ;)
 
#130
Here is a demo of the preamp driving a power amp. Keep in mind this is only a functional demo to show it can drive a power amp. The audio is distorted and terrible due to my handheld camera and how LOUD this thing is.

The volume knob is at noon and the "SIGNAL" LED on the power amp steadily lights up. I chose to use my fender jazz bass since it has the lowest output of all the basses I own...meaning, you can drive a power amp with even the lowest signal basses no problem.

The noise you hear is from the fans on the power amps. The speaker cab is nice and quiet.

 
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#138
vin*tone said:
Yeah they have a few. And the exact one is important.

If he doesn't want to share the model that's fine but it would be nice if he said so. A lot of info is shared in forums for DIY. It saves a lot of time in calculation, trial and error etc...

All good.
Click to expand...

I'm not sure what sharing part numbers would accomplish. I don't want to encourage this as a DIY project, the voltages are dangerous.
 
#140
I've been keeping busy...mainly focusing on etching the circuit boards. I now have five boards made, and board #1 is populated sans transformers (they are in the mail heading my way). I'm hoping to have a bunch of these made by the time the cases make it from the fabricator so its a just a quick assembly and then its done.

8Gt4pzi.jpg
 
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