FAB Modules

all about our FAB Modules

FAB2110 Input Transformer Module – Prototype with parts

Populated our FAB2110 Input Transformer Module with parts.  Here are some photos showing a Jensen JT-11K8-APC Input Transformer mounted on it.

The board looks good, but I’d probably add another mounting hole on the lower right corner, just because the board is a little unstable with a heavy transformer mounted on it.

I’ll build another prototype using a different Input Transformer, like an Altran or EA brand.

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FAB2010 Prototype – populated with parts

Populated the FAB2010 boards tonight. I put too much solder paste on my resistors so I need to be careful doing that. It’s a little hard because I’m just using a plunger to dispense the paste. I need to get one of those solder paste pump dispenser. I’ve seen them on eBay for around $150 or so.

Anyway, here are some pictures.

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FAB2110 Prototype PCB

Received our FAB2110 Input Transformer Module. Looks good.  No corrections needed, it’s just a very simple PCB. You can use a Jensen, Cinemag, Altran, EA Input Transformer for this PCB.

So let’s say you have a few of these FAB 2110 boards, you can solder a different kind of Input Transformer on each FAB board, and you’ll be able to swap them in and out in your circuit, and compare the sound flavors of each other.

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Don’t always trust your Eagle Libraries 100%…. well, trust but verify!

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FAB Modules, FAB2000 Input Modules
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I’m working on my FAB2010 XLR Input Module and getting ready to populate it. So far, I’ve noticed already a problem with the XLR jack…. it’s off by a few millimeters positioned on the board.

That’s the problem… I trusted the Eagle library for the XLR jack to be 100% correct. It’s not.

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FAB2010 – XLR Input Module : Prototype Boards are here!

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FAB Modules, FAB2000 Input Modules
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Received the FAB2010 XLR Input Module today.  I’ll have my SMD parts coming in the next few days, then I’ll be able to build the first prototype in my “Reflow Oven”… i.e. a stock Toaster Oven. I’ll make a post about my experiences with my “Reflow Oven.”

To recap, the FAB2010 module features a Neutrik PCB mounted XLR jack, logic level control for phantom power, and -20dB pad.  In addition, it features a soft-start phantom power. i.e. The 48Volts is raised slowly, instead of being switched on abruptly. This prevents loud mic popping when turning on phantom power since the 48volts is applied gently your expensive microphones.

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