ruffrecords

Re: EZ Tube Mixer Support Thread
« Reply #400 on: August 12, 2018, 01:29:36 PM »
I have heard that some of the drivers are a bit suspect at the higher sample rates I have seen something similar with my Scartlett interface. Nice to know it is not the tubes.


Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'


Re: EZ Tube Mixer Support Thread
« Reply #401 on: November 29, 2019, 08:39:00 PM »
Hello groupDIY EZ Tube Mixer Support Thread.

In hopes of keeping Mr. Thompson-Bell and I's CTC Design conversations to this thread I am ignoring the 120 day auto-prompt urging a new thread be started.

Given our discussions have led to designs developed by Holger Classen homage to passive tube mastery, the 12 channel Krassemascine. (well done mate!)

That said, my endeavour into the world of Analog Audio Design is educationally motivated and medically prescribed to replace costly therapy for Amnesia, DID and C-PTSD, instead re-focusing my thought patterns to PASSIVE TUBE AUDIO THERAPY through the fantastic art of PCB Population!
Long and Short term memory loss is the largest factor. Already the repetition of researching Mr. Thompson-Bell's designs has helped me to recall some simple electronic basics from my past.

DISCLAIMER: This type of therapy is not recommended as actual Medical Therapy. Mr. Thompson-Bell has been guiding me to this point for well over a year with many therapy sessions making note of the progress. This decision was made to re-educate myself and in turn my 12 year old son and 2 year old daughter in the art of Soldering.

In case anyone makes it this far, I should state that the largest contribution I hope to  make to the Custom Tube Console line of Audio Designs is to build out and thoroughly document the process, with both documentary style filmed footage and coloured step by step "The Custom Tube Console Playbook" coffee table read on every and all CTC designs i/we can work on togethers.

Outside of some main outlandish design ideas (the HexaQuad 64 - a Dolby Atmos Custom Tube Master Monitor Controller) I can share the current design layouts, once I have shared them and gotten feedback from Mr. Thompson-Bell.

Wall
If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik

ruffrecords

Re: EZ Tube Mixer Support Thread
« Reply #402 on: December 02, 2019, 03:53:01 AM »
Welcome to the group Wall. There is a wealth of expertise here all willing to offer advice.

Cheers

ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Re: EZ Tube Mixer Support Thread
« Reply #403 on: December 12, 2019, 11:00:27 PM »
Hello ITB Systems builders

Well I may as well layout the vision for our overall design of Mr. Thompson-Bells Classic EZTM.

Attached is a photo I imagine many to know well. Follie Audio are amongst Ethan Winers, Mr. Carlsons Lab and Mr. Thompson-Bell as gospel to our family in the audio world of education. When we first discovered this image some years ago we had begun the concept of a completely minimalist, path of least residence approach to professional audio and set out some basic rules.

1. We eliminated all commercially mass marketed/manufactured pro audio products as off limits. (not by choice, many told us to bleep right off, I will tell stories in our private Pateron page)
2. We could only work with analog designs we can repair without much worry.
3. Everything needed to be modular, modern and interesting.
4. It needed to be scalable in hands on training, meaning month to month new elements were to be introduced.
5. ELIMINATE CUSTOMER PORTALS AND PAPER WORK

And then in 2016/17 I found Mr. Thompson-Bells CTC homepage. For the next several years we worked around ITB designs given our existing partners were already established DIY designers and manufacturers and it was easy to learn from their builds.

To cut things short, it took some time to collectively grasp what Mr. Thompson-Bells overall designs were.

We mostly suffer, (or I mostly suffer) from remembering/understanding master section of mixer design.

None the less we are making a replica of this console with Mr. Thompson-Bells input on some details as well as your help with a few aspects.
Given the console will be larger then the 19"s needed for ITB systems, we are looking at modular or compact solutions for 4 channels of TUBE COMPRESSION to be integrated into this layout.

I like the AML-17-033 Magic Eye as the esoteric goto. However these will never fit.

Any thoughts?

Oh, I am also officially referring to Mr. Thompson-Bells overall designs as ITB Audio Systems. ITBAS.

Created a better image of the console for all to review.

More soon...

Wall
« Last Edit: December 12, 2019, 11:15:45 PM by matriachamplification »
If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik

ruffrecords

Re: EZ Tube Mixer Support Thread
« Reply #404 on: December 13, 2019, 03:52:54 PM »
The EZ Tube designs are based around standard Eurocards which are 100mm tall and 160mm deep. By the time you include the connectors and the overall supporting frame. each module needs about 200mm (8 inches) of depth behind the front panel. Thus, one serious problem with the console pic you posted is that its slope is so shallow and the front piece so short that the modules will be buried in the table top.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Re: EZ Tube Mixer Support Thread
« Reply #405 on: December 19, 2019, 02:24:36 PM »
Here is a copy of a desk concept we started years ago build off shallow depth racks and markers on the repurposed 8 foot kitchen countertop.

All this gear was culled over the years to pay for therapy. The only item I am looking to replicate is the Culture Vulture.

Emerson Pringle is a friend and the carpenter that was building this design with me a decade ago.

Today Mr. Pringle has once again joined the goal and is designing out the EZTM mixer enclosure with  dovetail joints to start.
https://emersonpringle.com/

Emerson is a live audio engineer and former studio owner/designer so the conversations are almost non existence.
If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik

Re: EZ Tube Mixer Support Thread
« Reply #406 on: December 21, 2019, 03:09:50 PM »
We are curious if we can utilize the TLA2 card retooling it as a Tube Harmonic Distortion Overdrive Module.

Given NFB is used via the 47K resistor to cull the distortion can this be modified to promote distortion as opposed to eliminate it?

"An SRPP provides lots of drive capability but its distortion is rather high. Negative feedback is applied via the 47K resistor Rfb
to the cathode of the 12AX7WA to stabilize the gain and reduce distortion." Ian Thompson-Bell
http://www.customtubeconsoles.com
If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik

ruffrecords

Re: EZ Tube Mixer Support Thread
« Reply #407 on: December 21, 2019, 03:57:40 PM »
We are curious if we can utilize the TLA2 card retooling it as a Tube Harmonic Distortion Overdrive Module.
I would not recommend it because there are better  and simpler ways of achieving tube overdrive. I would not endorse it because the TLA is designed as a relatively clean amplifier.

If you want tube overdrive distortion then just use a single SRPP stage on its own. Just using the 6922 biased as it is in the TLA will give you the effect you want.

I have spent the last ten years striving to design and build clean pro audio tube preamps and mixers. Yet all the time I am asked to design/build a tube distortion box - its depressing.  A clean class A tube design shines in comparison to almost any semiconductor design; the sound is incredible.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Re: EZ Tube Mixer Support Thread
« Reply #408 on: December 21, 2019, 04:19:40 PM »
I would not recommend it because there are better  and simpler ways of achieving tube overdrive. I would not endorse it because the TLA is designed as a relatively clean amplifier.

If you want tube overdrive distortion then just use a single SRPP stage on its own. Just using the 6922 biased as it is in the TLA will give you the effect you want.

I have spent the last ten years striving to design and build clean pro audio tube preamps and mixers. Yet all the time I am asked to design/build a tube distortion box - its depressing.  A clean class A tube design shines in comparison to almost any semiconductor design; the sound is incredible.

Cheers

Ian

Thank you and our apologize for the depressing query. I work with 3D audio and for games, more often then not, I use Tube distortion to layer brittle or harsh undertones. I am uncertain how most use distortion outside of pedal effects, but this is critical to my workflow.

addition: My wife says, with all due respect Mr. Thompson Bell, the other options we are looking a add up to $4000. She finds that very depressing :)

« Last Edit: December 21, 2019, 04:52:15 PM by matriachamplification »
If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik

Re: EZ Tube Mixer Support Thread
« Reply #409 on: December 23, 2019, 02:37:33 PM »
After my wife hired a "professional" 3D modeler my son and I tried our hands at Sketchup.

These components were sourced for free from Sketchup 3D Warehouse, with the layout being Mr. Thompson-Bell EZTM Classic Design!
The Black on Black VU meters was my sons choice and are available from a  Vu manufacturer in the UK.

What makes this design especially interesting is we are molding it off of the API 1608 Desk, adding more depth to compensate for the sub-racks and harness. This is to showcase Emersons carpentry to potential 500 Series Desk admirers.

We have almost completed the EuroChannel Card with casing to add to the model.

First time working in 3D very cool! The visual educational elements are exceptionally inspiring.

...more soon...

Wall
If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik


Re: EZ Tube Mixer Support Thread
« Reply #410 on: December 23, 2019, 02:43:06 PM »
And here is a side profile

If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik

ruffrecords

Re: EZ Tube Mixer Support Thread
« Reply #411 on: December 23, 2019, 05:02:46 PM »
Thank you and our apologize for the depressing query. I work with 3D audio and for games, more often then not, I use Tube distortion to layer brittle or harsh undertones. I am uncertain how most use distortion outside of pedal effects, but this is critical to my workflow.

addition: My wife says, with all due respect Mr. Thompson Bell, the other options we are looking a add up to $4000. She finds that very depressing :)

If you really want tube 'colour' in an EZTubeMixer format then your best bet is to consider the old Classic Mic Pre V3 design. This is a simple two tube design based on the old fixed gain stages interspersed with variable pads that was the hallmark of the old RCA tube broadcast mixers.. They use a mu follower topology for lower distortion but if you do drive them hard they will produce 'colour' because they have no negative feedback. If you want more colour, a few simple component changes will convert the two stages into SRPPs which will produce even more colour but slightly less gain. As I said this board as originally designed is EZTubeMixer compatible but the popularity of the design very soon morphed it into a stand alone DIY mic pre with built in power supply. Many people in this group have built them as fairly clean stand alone mic pres and many have built them as relatively dirty DI boxes. I do not have any of the EZTube versions of this board in stock any more but if you want some I am happy to have some made.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Re: EZ Tube Mixer Support Thread
« Reply #412 on: January 04, 2020, 07:50:42 PM »
Lets hold off on any additional Cards outside of what I need listed below.


Where I am at is attempting to devise a simple analog monitor controller for the basic 5.2.2 Dolby Atmos setup utilizing the TLA2 cards.
That said we are going to run a "full house" with 6 Channel Strips paired off into each EQ; Pultec, Helios and REDD.

The addition of a 2 slot Mother Board would be needed. However, would it be best to look at a 4 slot mother board to give more flexiblity to the monitoring section.

I seem to be overthinking. May a standalone "Mastering" meter bridge and monitor controller for this make more sense for this approach with the TLA2 cards?
If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik

Re: EZ Tube Mixer Support Thread
« Reply #413 on: January 04, 2020, 11:35:13 PM »
https://canada.newark.com/schroff/24563-194/19-inch-subrack-europacpro-kit/dp/59M5130

We are about to order this subrack and want to make sure this is the proper dimensions.

If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik

ruffrecords

Re: EZ Tube Mixer Support Thread
« Reply #414 on: January 05, 2020, 05:27:13 AM »
https://canada.newark.com/schroff/24563-194/19-inch-subrack-europacpro-kit/dp/59M5130

We are about to order this subrack and want to make sure this is the proper dimensions.

According to the data sheet this one is intended for individual rear connectors but if you are using the EZTubeMixer motherboard you need the type that takes a motherboard. Apart from that it looks OK.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'


If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik

Re: EZ Tube Mixer Support Thread
« Reply #417 on: February 16, 2020, 01:22:50 AM »
After one week of actually working on the build my son is eagerly on board and adding his own ideas to the projects design.

My son asked
"if the eq can be swapped plug and play, can we add dual eq's to each mic pre with a switch to select the REDD or Helios eq?"

He thought of this idea for a voice over set up where he could have optional eq's for different voice actors without spending time swapping.

I cannot see why this would not work but am asking prior to putting into action my thoughts are mainly on the layout of the eq's face plating to fit 12 eq channels into a 6 channel space.

We are already building the eq's, makes sense. Thoughts?
« Last Edit: February 16, 2020, 01:33:39 AM by matriachamplification »
If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik

ruffrecords

Re: EZ Tube Mixer Support Thread
« Reply #418 on: February 16, 2020, 04:16:50 AM »
There is no reason in principle why this cannot be done. It is just a matter arranging the switching. As you correctly surmise, the challenge is going to be fitting all those controls on one front panel whilst retaining good ergonomics.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Re: EZ Tube Mixer Support Thread
« Reply #419 on: February 16, 2020, 03:07:01 PM »
There is no reason in principle why this cannot be done. It is just a matter arranging the switching. As you correctly surmise, the challenge is going to be fitting all those controls on one front panel whilst retaining good ergonomics.

Cheers

Ian

we are adding a rack space to 7u for the dual eq layout.  this way we can stager the controls .  i will need to order eq boards from you soon.
If you are curious, you'll find the puzzles around you. If you are determined, you will solve them.
Erno Rubik


 

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