It has no lfe input. would work welll with just 1 rca in the left input as others ?

Yes, you can just run a cable from LFE out to Left in. Since your receiver is already filtering high frequencies from the LFE out, you don't need to do so in the subwoofer, so you might want to turn the crossover knob to its highest setting in the subwoofer.

How tall is it without the legs inserts? Can you use the sub without them as well?

It is 7 inches tall and to get the best effect you must use the legs as there is a downward pointing speaker.

What is the height on the unit including the feet?

The feet are approx. 3 inches but they fasten to an inset, so I would say add an extra 2.5 inches to the height to be safe. Also, I believe the rubber feet could be cut if needed, as the screw in the feet sits closer to the base of the box than the floor. I use my box on it's side, resting on cork board and do not use the feet.

This is a 2009-2010 model. do you think it will do well the job with a denon 2017 reciever and a 5 hifi speakers 2014 models ?

Yes. I have an older Denon AVR 1911 but I don't think a newer Denon would have any problems. I wasn't sure about the CP8 but it sounds great. I have it connected to 25 ft cable that goes underneath the house. Enjoy.

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Description

🎬 Feel the bass, not the bulk — the CP8 Couch Potato fits your space and your vibe.

POWERFUL BASS IMPACT - 300W peak power delivers deep, room-shaking bass that commands attention in any home theater setup.
SLEEK UNDER COUCH FIT - Just 7 inches tall—perfectly hides under sofas or beds without sacrificing style or space.
ADAPTIVE AUDIO CONTROL - Variable crossover, phase control, and auto signal sensing ensure your bass is always perfectly tuned.
SPACE SMART PORTED DESIGN - 3-inch bass-reflex port maximizes low-frequency output while staying discreetly tucked away.
PRECISION DOWN FIRING DRIVER - 8-inch woofer with Santoprene surround uses your floor as a natural amplifier for immersive tactile bass.

The Earthquake Sound CP8 Couch Potato is a slim, 7-inch tall 8-inch subwoofer delivering up to 300W peak power through a down-firing bass reflex design. Its compact form fits discreetly under furniture, while advanced features like a Santoprene surround woofer, 3-inch ported enclosure, and adaptive crossover controls provide deep, precise bass response from 20Hz to 180Hz, perfect for immersive home theater experiences without sacrificing floor space.

Specifications

Is Electric	Yes
Power Source	AC
Speaker Maximum Output Power	600 Watts
Subwoofer Connectivity Technology	Wired
Connectivity Protocol	Bluetooth
Connectivity Technology	Low-Level & High-Level Connections
Audio Driver Size	8 Inches
Item Weight	24.6 Pounds
Item Dimensions D x W x H	12"D x 24"W x 7"H
Unit Count	1.0 Count
Impedance	8 Ohm
Compatible with Vehicle Type	Car
Compatible Devices	Universal
Speaker Size	8 Inches
Controller Type	Button
Color	Black Laminate
Is Waterproof	FALSE
Audio Output Mode	Surround
Mounting Type	Floor Standing
Speaker Type	Subwoofer
Additional Features	Low-Profile Subwoofer, High Resolution Audio
Recommended Uses For Product	Home Audio
Subwoofer Diameter	8 Inches

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