Gadget Freak Case #279: Stack Your TVs With a Homemade Entertainment Center

Whether you're a designer, gamer, or just like to have a busy desktop, two monitors (or TVs) is always better than one. Gadget Freak shows you how to build an entertainment center that can hold two 70-inch TVs.

April 7, 2016

5 Min Read
Gadget Freak Case #279: Stack Your TVs With a Homemade Entertainment Center

I have done CAD work on dual monitors for decades. I want my eyes to do some far focus, it's helpful to delay worsening nearsightedness. I also found myself watching TV while using the computer. To solve these problems, I built a plywood entertainment center that holds two 70-inch TVs as a dual-monitor setup for my Lenovo laptop.

I designed the entertainment center in TurboCAD 15. Now I can watch TV on the top 4K set, while using the bottom screen as a monitor. I can also watch two TV shows, or use both TVs as a dual-head external monitor setup. I tossed a bed down in front so I can watch and/or work while resting recumbent. Under the laptop shelf is an IQAir HealthPro HEPA filter to keep my allergies at bay. On the right shelf is the audio receiver and a cheap stereo that drives the sub-woofers. Topping those off is an Alpha 5 clock I built from a kit.

I use a wireless keyboard and mouse to operate the laptop, and I run a long USB cable from the laptop to either my flatbed scanner or the SATA 3 dock that holds a 1TB backup SSD. An Oregon Scientific temperature monitor tells me how hot it is outside, in the garage, and in the attic, as well as at the desk.

My Lenovo laptop has VGA and HDMI outputs. So I picked the Sharp 1080 LC-70SQ15U with a VGA input for the bottom TV. Sharp is about the only TV manufacturer that publishes detailed drawings showing the exact dimensions and the location of the VESA mounting holes on the back of its TVs. I wanted a trusted seller, so I found it at B&H Photo for $1,595.00.

I recommend the TV review site, it's designed by engineers for engineers and will help show how well the TV will work as a monitor. The top TV can be a second monitor, but also a broadcast TV and the display for DVDs and BluRays from the laptop. I also watch YouTube videos on the top TV. The top TV is also a Sharp, the 4K LC-70UH30U. I found that one on Amazon for $2,229.99. I waited until the day after Super Bowl and the price went up $300. Who knew?

While I thought I would have problems with the remotes interacting, the 4K set also has a Bluetooth remote that does not affect the bottom TV. You can see a piece of duct tape over the IR sensor on the top TV. I put eight 1-inch steel ball casters on the bottom. This unit glides effortlessly across the floor when I need to move it.

I used a 3.5-inch section of PVC pipe to run the wires in the back. There are a few short ones dangling, but I have not received the longer cables yet. I used Home Depot red oak ¾ plywood. My receiver is a Denon AVR-1609. The main speakers were given to me by a girlfriend that bought a Bose system. I got a pair of Beverage subwoofers at the eFlea, the Silicon Valley electronic flea market. I drive them with a cheap Sony stereo fed off the Denon subwoofer out. I also got some Advent speakers at the eFlea to use as rear speakers. I operate the laptop via a wireless compact Verbatim keyboard, and a Logitech gamer mouse.

Download the TurboCAD drawings and DWG and DXF files here.


Component reference




Top TV

Sharp LC-70UH30U 4K


Amazon/Beach Camera

Bottom TV

Sharp LC-70SQ15U 1080


B&H Photo


Lenovo IdeaPad Y580, 15.6" 1920x1080,Blu-ray, i7 3610QM 2.30 GHz, 8 GB, 1 TB, GeForce GTX 660M, Windows 7 Pro

$1099.99 (8/5/2012)



Denon AVR-1609

$229.99 (12/5/2009)


Bass amp

Sony STR-DE197



Main Speakers





$150 (used)

Silicon Valley eFlea

Rear Speakers


$50 (used)

Silicon Valley eFlea

TV mounts

Atlantic 63607069 Tilting TV Mount




¾”x4'x8' Red Oak Plywood (3 sheets)


Home Depot


ISB Iguchi US-25 1" Flying Saucer Type Ball Transfer (qty 8)



Wood screws

#6 2-inch, J-Gold, KL81071 1 lb


Ace Hardware

Bolts & nuts

5/16 x 2” qty 16, plus flatwashers, lockwashers

Ace Hardware


Real Milk Paint Co, Pure Tung Oil - 32 oz


Amazon/Green Design Center®


Channel Master CM-4221HD




Verbatim Mini Wireless Slim Keyboard, Black 97472




Logitech M-RCR147 MX1100 wireless mouse



VGA cable

Tripp Lite 6'


Allied Stock #: 70227896

HDMI cable

Speco Technologies 6' Male-to-Male


Allied Stock #: 70619954

Optical cable 1

9' Toslink, Tripp Lite


Allied Stock#:70589771

Optical cable 2

12' Toslink, L-com Connectivity


Allied Stock #: E4804492

Audio cable

Stereo mini jack to dual RCA


From TV 2 if desired

Antenna cable

Tripp Lite 25' F-connectors


Allied Stock #: 70589774

Speaker cable

Carol Brand / General Cable


Allied Stock #: 70040446


Alpha 5 kit


Evil Mad Science

Network cable

100 ft CAT6 snagless/molded patch cord, black


Allied Stock #: 70665397

Plug strip

Tripp Lite TLP74RB, 7 out


Allied Stock #: 70101553

[All images via Paul Rako]

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