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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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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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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Introducing – our FAB2110 Module.  This is basically our Input Transformer Module.

This FAB module will accept CAN type transformers like Jensen, Cinemag, Altran Input Transformers with it’s typical (8) pins.  CAN Transformer dimensions are 1.13″ diameter (28.7mm) with 0.15″ pitch pins.

FAB2110 Input Transformer Modules are designed to mate with our FAB2010 XLR Input Modules.  This allows you to create a complete Transformer-based Input Stage for that Mic Preamp or gear you’re building.

The FAB2010 XLR Input Modules require power (V+, 48V) for proper operation of it’s relays (controlling the -20dB Pad and Phantom Powering) and 48Volts Phantom Power. These power requirements cam be supplied via the POWER INPUT headers of the FAB2110 Input Transformer Module.  You can use a 2×5 (10-pin) Ribbon Cable to connect this POWER INPUT header to our FAB Power Supply*. Continue Reading…

The first FAB Module that will be available is a FAB2010, an XLR Input Module.

The FAB2010 has the following features:

• PCB Mounted Neutrik XLR Female Jack
• RFI Protection
• Soft-Start 48Volt, Phantom Power
• -20dB Pad
• Logic Level (+5V) Pad and Phantom Power Control
• Using a mixed of SMD (Surface Mount Devices) and TH (Through-Hole) components

Here’s a screenshot of the current prototype design. I hope to get this PCB design sent out for fabrication this week so I can start testing. After a successful test, I’ll provide the schematics and some application notes on this website. You will also be able to purchase PCBs if you’re adventurous to DIY assemble them (it’s easy!) or you can also purchase ready-made FAB2010 modules from our online store* (Pricing TBA). Continue Reading…