Question 1

Moving to top floor apartment with Pioneer SW-8-K. Is this overkill or even needed for such a small sub?  Better/cheaper alternatives for an 8"?

Accepted Answer

I don't think of this product as a way to prevent sound from moving through the building, but as a way of preventing unwanted room modes from 'muddying" the low frequencies. I have a number of these both the full size and the smaller version you are looking at and they do a tremendous job of adding clarity to the low frequencies, but I can still hear the bass downstairs in my basement. I would highly recommend the product, but I don't think it's going to prevent your neighbors from getting upset if you watch a Marvel film at a fairly loud level. Hope this helps.

Question 2

Is there really much of a difference between the Subdude and Ampdude? Minus looks of course.

Accepted Answer

I'm not sure what ampdude is doing, subdude's foam seems to be proprietary. Meaning that r and d developed for this product seem to do something with the sound waves. That being said this design seems to bring a noticeable difference when placed under the sub.

Question 3

Will this reduce the amount of bass that travels downstairs when my subwoofer is upstairs?

Accepted Answer

They should. If you have them on a wooden floor you can feel and hear the bass throughout the house. Resting your sub on it should reduced the boominess.I had the opposite problem. I had 2 Laradigm subs on my basement, resting in thin carpet on concrete. My bass was completely gone. The bass indidnhave was bloated and boomy. I added 2 of these and all of a sudden I could hear and feel my bass again. Best money I ever spent. I would also recommend the Auralex mopad for your center channel

Question 4

If my subwoofer is 18 inches deep and this platform is 15 - is 1 1/2 inches overhang on the front and back going to be an issue?

Accepted Answer

Overhang won't be an issue as long as the spikes or whatever supports are used to hold the sub up off the ground will sit on the ampdude.

ASIN	B00DI5AXNI
Additional Features	Lightweight
Antenna Location	For Surround Sound Systems
Audio Driver Size	15 inches
Audio Driver Type	Dynamic Driver
Audio Output Mode	Surround
Best Sellers Rank	#2,984 in Musical Instruments ( See Top 100 in Musical Instruments ) #96 in Recording Studio Acoustical Treatments
Brand	Auralex
Color	Multicolor
Compatible Devices	Smartphone, Tablet, MP3 Player, Desktop, Television, Projector, Laptop
Connectivity Technology	XLR
Customer Reviews	4.6 4.6 out of 5 stars (964)
Enclosure Material	Inert structural layer and velour
Frequency Response	1000000 MHz
Global Trade Identification Number	00818105008476
Is Waterproof	FALSE
Item Dimensions D x W x H	15"D x 2"W x 15"H
Item Type Name	SubDude-II Subwoofer Acoustic Isolation Platform, 1.75" x 15" x 15"
Item Weight	5 pounds
Manufacturer	Auralex Acoustics
Model Name	SubDude II
Model Number	SubDude v2
Mounting Type	Floor Standing
Number of Audio Channels	5.1 or 7.1
Number of Items	2
Power Source	Corded Electric
Series Number	2
Speaker Maximum Output Power	25 watts
Speaker Size	15 inches
Speaker Type	Subwoofer
Subwoofer Diameter	15 inches
UPC	818105008476
Warranty Description	1 Year Manufacturer Defect, replacement only
Warranty Type	1 Year Manufacturer Defect, replacement only
Wireless Technology	No Wireless Communication Technology
Woofer Diameter	15 inches

Auralex Acoustics SubDude-II Subwoofer Acoustic Isolation Platform, 1.75" x 15" x 15"

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