SKU: OSD-IWS-88
OSD IWS88Dual 8" In Wall Subwoofer 350W, Injected Woofers Back Bridge Plate
We improved the lower end of our popular dual in-wall subwoofer. By adding a strong reinforced back plate to stiff the structure of the subwoofer, we make it to sound deeper and clean. A subwoofer is designed to reproduce the lowest of audible frequencies and will give you that spine-tingling rumble effect that takes you out of reality and into the plot. With dual 8" Injected polypropylene woofers, bigger magnets and 350 Watts of power handling, the IWS-88 in-wall subwoofer performs excellently for home theater surround sound applications as well as for listening to music. Like all OSD Audio speakers, the IWS-88 includes a dog-ear bracket system that mounts securely to the sheet-rock after the cut-out hole has been made and the speaker has been dropped into the hole. The grille is paintable to match your room decor and we even include a cutout template that doubles as a paint shield. You'll experience thunderous, room-filling bass without filling up floor space.
Amplifier Suggestions
Because this is a passive speaker, it will require a subwoofer amplifier to power it. An ideal match to this subwoofer is our OSD SMP500 dedicated subwoofer amplifier that features 400W RMS @ 4 ohms, Variable High Cut Filter 30Hz-150Hz; front panel Knob, and Choice of Signal Level Input or LFE (Low-Frequency Effects).
Amplifier Suggestions
Because this is a passive speaker, it will require a subwoofer amplifier to power it. An ideal match to this subwoofer is our OSD SMP500 dedicated subwoofer amplifier that features 400W RMS @ 4 ohms, Variable High Cut Filter 30Hz-150Hz; front panel Knob, and Choice of Signal Level Input or LFE (Low-Frequency Effects).
Warning: California's Proposition 65
Warning:
This product can expose you to chemicals, including vinyl chloride, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
- Speaker Type: Dual 8" In-Wall Subwoofer
- Woofer: Dual 8" Injected Polypropylene w/ Reinforced Back Plate
- Frequency Response: 38Hz-500Hz
- Power Handling: 350 Watts
- Sensitivity: 90 dB @ 1W/1M
- Impedance: 4 Ohms
- Inputs: Spring Binding Posts
- Install-friendly Dog Ear Installation Brackets
- Cut-Out Template for Easy Installation
- Paintable Grille Included
- Sold As: Single
- Mounting Depth (Assuming .5" Drywall): 3.56"
- Unit Dimensions: (L x H x D) 11.43" x 18.43" x 4"
- Cutout Dimensions: (L x H) 10.25" x 17.75"
- Weight: 11 lbs
- Warranty: 10 Years
- *Note: Requires Additional Subwoofer Amplifier
View Owner's Manual
31 Questions asked
Have a Questions?
What's on your mind?
James • 12/17/2019, 2:17:43 PM
Can you recommend a non-ported enclosure volume for the IWS-88 subwoofer? I have to install a pair in a large open ceiling void, and I'm guessing it will work much better if we box out a part of that void before installing the sub. Hence the need to know what volume will give best overall perfomance. The room it has to support is large (over 500
sqft) and it will be supporting 3 pairs of 8" in-ceiling speakers. Not ideal, and I know that two would be better than one, but it was a battle just to get this one in the mix
Customer Service • 12/17/2019, 2:17:43 PM
If you want to build a back box, make sure it is at least the same size of the width and length of the speaker, but at least 4 to 7" deep, also please add some fiber materials inside.
James • 12/17/2019, 2:17:43 PM
Can you recommend a non-ported enclosure volume for the IWS-88 subwoofer? I have to install a pair in a large open ceiling void, and I'm guessing it will work much better if we box out a part of that void before installing the sub. Hence the need to know what volume will give best overall perfomance. The room it has to support is large (over 500
sqft) and it will be supporting 3 pairs of 8" in-ceiling speakers. Not ideal, and I know that two would be better than one, but it was a battle just to get this one in the mix
Customer Service • 12/17/2019, 2:17:43 PM
I'm trying a sealed box that is 15" x 20" x 8", so about 1.4 cubic feet of total volume. I've also installed an adjustable 2" diameter port tube that can be adjusted between 5" and the full 8" depth of the box that can also be sealed closed. I'll provide volume results and tunability in a future comment.
Brian Holland • 12/17/2019, 2:17:43 PM
Does this speaker come with the paintable grille, I do not see it in any of the product pictures
Customer Service • 12/17/2019, 2:17:43 PM
Hi Brian:
The Speaker includes a paintable grill shipped with it.
TL/4185
John • 12/17/2019, 2:17:43 PM
Hello, I just purchased the IwS88 with the SMP250 and was planning on installing it into the wall where my air ducts run through. It is a tight space but this it is the main duck space that runs from the second floor to the fourth floor attic. along with cat 5, coax, electrical, etc. Because it is sealed should it be set it up as an infinite baffle? The builder's contractor placed rca and speaker cable on the second floor in the duct space to the main speaker demarcation point. I am thinking they did this to be able to place a in-wall sub woofer. Just want to see if I will be ok, or should I go with the Sl800 instead? I have included pictures of the environment and I am glad I didn't start cutting drywall just yet. lol. Love your products OSD. Thanks for the advice.
Customer Service • 12/17/2019, 2:17:43 PM
Hi John:
The SL800 is much better for your application. It is always more advantageous to have a sub woofer that can be placed around the room to find the best location where you will hear the most low frequencies while sitting at your optimum viewing/listening position. Either speaker needs a True Subwoofer amplifier like our SMP250. It is true that the Sub woofer is Omni-directional but due to the size of the Sign wave produced by the low frequencies there tends to be dead spots around the room when using only a single Sub. When trying to determine the best location you are limited with an In wall sub that does not feature a sealed enclosure. You can not experiment on different locations like you can with the SL800. In fact we recommend during setup that you place the SL800 on the main chair/couch where you will be sitting. Now while playing your sub you will need to walk around the room checking out the three locations your wife (if you are married) will allow for the sub to be placed. That will be the optimum location for the SL800. You also have the option of adding a second SL800 powering both with the single SMP250. Two subs helps eliminate those dead spots as well. Ironically the SL800 was designed as an in-Wall Sub but they could not get the depth low enough without sacrificing the excellent sound quality.
Good Luck
TL/4434
PS: Did I see clear jacketed speaker wire in your image wrapped around the duct? Does the outer jacket say CL2 or CL3?
Kevin • 12/17/2019, 2:17:43 PM
Will this mount in a 2" x 4" framed wall for depth (assuming lumber is 3 1/2" deep + faced with 1/2" gypsum board)?
Customer Service • 12/17/2019, 2:17:43 PM
Hi Kevin:
The depth of the IWS-88 is 3 9/16 just a shade over 3 1/2. You have 3.5" stud with the additional 1/2 inch of the Gypsum board so it will fit..
TL/4504