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Definitive Technology ProSub 800

Powered subwoofer (Black)

Item # 735PSUB8B

Add the excitement of deep, rumbling bass to your home theater with Definitive's ProSub 800.

Add the excitement of deep, rumbling bass to your home theater with Definitive's ProSub 800.

Item # 735PSUB8B

In stock

$399.00 Sale: -$50.00 off Sale: ends today

$349.00

Other options

About the Definitive Technology ProSub 800

Unique woofer design for big bass

Add the excitement of deep, rumbling bass to your home theater with Definitive's ProSub 800. A front-mounted 8" woofer works together with a pressure-coupled low bass radiator on the bottom of the enclosure to produce hard-hitting bass. The combined output of this pair is comparable to that of a traditional 10" woofer, but with greater speed, musicality, and control. The woofer is encased in an incredibly rigid basket engineered to hold the massive magnet structure and large voice coil in absolute alignment. And the non-resonant cabinet uses multiple internal bracings to make sure that you hear clean bass without sound-muddying vibrations.

Unique woofer design for big bass

Add the excitement of deep, rumbling bass to your home theater with Definitive's ProSub 800. A front-mounted 8" woofer works together with a pressure-coupled low bass radiator on the bottom of the enclosure to produce hard-hitting bass. The combined output of this pair is comparable to that of a traditional 10" woofer, but with greater speed, musicality, and control. The woofer is encased in an incredibly rigid basket engineered to hold the massive magnet structure and large voice coil in absolute alignment. And the non-resonant cabinet uses multiple internal bracings to make sure that you hear clean bass without sound-muddying vibrations.

Advanced crossover system

A 300-watt amplifier and advanced crossover ensure accurate bass response. The continuously variable low-pass crossover allows you to precisely control the frequencies that your subwoofer handles. And the built-in high-pass crossover is a nice touch: it prevents your main speakers from overloading with low frequencies if you hook them up through the subwoofer's speaker-level outputs. A side volume control makes adjustments fast and easy, so you can seamlessly blend the ProSub 800 in with the rest of your system.

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Product highlights:

  • bass-reflex (passive radiator) enclosure
  • 8" woofer pressure-coupled to an 8" low bass radiator
  • built-in 300-watt amplifier
  • frequency response: 20-150 Hz
  • continuously variable low-pass 40-150 Hz crossover
  • automatically powers off when it no longer receives signal from the receiver
  • speaker-level inputs and outputs
  • 80 Hz fixed high-pass crossover for speaker-level outputs
  • LFE input for use with home theater receiver's subwoofer output
  • matte black finish
  • 10-5/16"W x 12-7/8"H x 16-5/8"D
  • warranty: 5 years woofer, 3 years amplifier
  • Our 60-day money-back guarantee
  • MFR # NDJA

What's in the box:

  • 8" Powered subwoofer
  • Detachable grille (installed)
  • 7' AC power cord
  • Owner's Manual
  • Online Product Registration card

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Definitive Technology ProSub 800 reviews

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More details on the Definitive Technology ProSub 800

Stacey B.

Features & specs

Enclosure Passive Radiator
Video Shielded No
Woofer Size (inches) 8
Woofer Composition Polymer
Firing Direction Front
Wireless No
Preamp-Level Inputs Yes
Speaker-Level Inputs Yes
Speaker-Level Outputs Yes
Low-Pass Crossover Freq 40-150 Hz
High-Pass Crossover Freq 80 Hz
Phase Switch No
Amplifier Output (watts) 300
Frequency Response 20-150 Hz
Height (inches) 12-7/8
Width (inches) 10-5/16
Depth (inches) 16-5/8
Weight 26 lbs
Speaker Parts Warranty 5 Years
Speaker Labor Warranty 5 Years
Amplifier Parts Warranty 3 Years
Amplifier Labor Warranty 3 Years

Product Research

Features
Controls
Connections

Features

Passive Radiator Design: The ProSub 800 features a 300-watt (RMS) amplifier driving a high-excursion 8-inch front-mounted direct-radiating woofer that is pressure-coupled to an 8-inch low-bass passive radiator on the bottom of the enclosure. The net radiating area of the ProSub 800 is 27% greater than a single 10 inch woofer but with better speed, pitch definition, and control.

PowerField Technology Amplifier: The ProSub 800 incorporates Definitive's proprietary PowerField technology, by which the amplifier is specifically engineered in conjunction with the driver for optimum load matching and power transfer characteristics. The Definitive ProSub 800 powered subwoofer incorporates a unique, patented, digitally-coupled infinite power source amplifier with a high-current direct coupled power supply and discrete MOSFET output devices to ensure perfect high-definition resolution and reproduction of the most dynamic program material and demanding sub-bass transients. Construction quality is absolutely state-of-the-art, with only the highest quality components used including mil-spec glass epoxy circuit boards and precision resistors and capacitors for many years of faultless superior performance.

High-Definition Subwoofer: The powerful, high-definition 8" polymer subwoofer driver is specifically engineered by Definitive Technology to deliver rock-solid low distortion bass, reaching down to the lowest subsonic frequencies (20-150Hz), with superior transient response. The special ultra-stiff, low-mass cone (for super-fast transient response) is joined to a specially formulated surround and long-throw voice coil and spider. The ultra-rigid basket is engineered to hold the woofer's massive magnet structure and large voice coil in absolute alignment. The high temperature voice coil is made of aluminum wound with triple insulated ultra-pure copper wire and baked in epoxy for increased power handling.

Non-Resonant Cabinet: The cabinet of a loudspeaker plays a large part in its sonic performance. Resonance and vibration can add unwanted distortion as well as drain away important energy from the system. The Definitive Technology ProSub 800 powered subwoofer utilizes a monocoque cabinet, which has been specifically engineered to be totally inert and vibration free, to ensure you of pure sonic reproduction. Monocoque means that the cabinet is of a unitized construction where all panels are permanently joined together into one solid structure. The cabinet walls themselves are high-density medite fused together by space-age polymer adhesives. The front and rear baffles are extra thick and the cabinet, itself, incorporates multiple internal braces to ensure total solidity.

Protection Circuits: The Definitive Technology ProSub 800 features two protection circuits that ensure that the subwoofer can never be overdriven.

Integrated/Adjustable Feet: The ProSub 800 features four integrated feet with rubber tips so you can place it securely and safely on your home's floor. Each foot's height is adjustable to help you place the powered sub on an uneven surface.

Placement: The Definitive Technology powered subwoofer has been designed to operate at frequencies generally below 150 Hz. Because low-frequency information in this range essentially is non-directional, your subwoofer can be located anywhere in your listening room that is most convenient. Also the continuously variable low-pass filter operate at a very fast roll-off, ensuring great performance wherever you place the subwoofer. There are, however, some general rules that you should bear in mind when locating the powered sub.

  • For maximum output the subwoofer should be placed in a corner or against the wall.
  • Corner placement will increase the subwoofer's efficiency, which in turn will increase your system's maximum output and improve the dynamic capability of the subwoofer.

Controls

Subwoofer Controls: A complete array of controls allows the ProSub 800 to be perfectly integrated with any stereo or multi-channel audio system, and tuned for optimum performance in any room.

Volume Control: The ProSub 800 features a convenient front-side-mounted volume control that makes adjustments fast and easy. This precision level control allows you to perfectly adjust the volume of the subwoofer to match your system and room as well as to fulfill your own personal sonic preferences.

Variable Low-Pass Crossover: The Definitive Technology ProSub 800 powered subwoofer has a continuously adjustable low-pass filter control which allows you to choose a roll-off of from 40 to 150 Hz for the high end of the subwoofer. This unique "dual stage" roll-off (24dB/oct) is extremely steep which ensures perfect blending with your main speakers as well as eliminating unwanted midrange from the subwoofer. This is especially important because it gives you much greater flexibility in placing your subwoofer in your room without being able to hear where it is located.

Auto Turn-On Circuit: The powered subwoofer has a special power circuit which automatically turns the powered subwoofer on when a signal is fed to the loudspeaker and turns it off when there is no signal present. There is also a manual on-off switch on the rear-panel.

LED Indicator: The red LED on the back panel of the powered subwoofer will light up when a signal is sensed and the amplifier turns on. It will automatically turn off with the powered subwoofer, a little while after the signal is discontinued.

Connections

Line-Level & Speaker-Level Connections: The Definitive Technology ProSub 800 powered subwoofer has a complete range of inputs and outputs to allow easy and effective hookup to any system. The ProSub 800 has a separate direct-in LFE low-level input. Speaker level inputs are provided in case you do not have a subwoofer output.

LFE Input: The Definitive Technology powered subwoofer has a low-level direct LFE input for Dolby Digital soundtracks, which bypasses the crossover network. If you are connecting the subwoofer to an AV receiver without a dedicated subwoofer or LFE preamp output, but does features a stereo RCA output, you will need to use a stereo RCA cable along with an RCA Y-adapter.

Note: When using the LFE input with a receiver that has an internal x-over you should set the x-over on the sub to 150Hz.

Speaker Level In: The Speaker Level inputs (binding posts) are designed to be used on receivers or amplifiers that do not incorporate any RCA type subwoofer outputs. If your receiver is equipped with an RCA type subwoofer outputs, these speaker level inputs should not be utilized.

Speaker Level Output:The ProSub 800 also features speaker level outputs (binding posts), so you can connect your front (main speakers) through the powered subwoofer. The ProSub 800 has a built-in speaker level high-pass crossover preset at 80 Hz (6dB/oct).

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Customer Q&A

7 questions already asked

Q
My ProSub800 won't output sound until the receiver volume is turned up extremely high. When the sound engages, the sub will produce a loud cracking noise. But the sub performs fine after that. I'm powering the sub via a high level connection with two ProMonitor 800s. I have tried different levels on the Variable Low Pass Crossover dial but nothing changes. This problem has persisted with two separate AVRs. My current AVR is an Onkyo TX-nr686. I'm a bit of an audio novice, btw. Any suggestions?
[ Shmeeka  Oct 12, 2020 ]
2 answers
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Calvin  Nov 05, 2020 ]  Staff
A
I would strongly suggest that you contact Crutcfield technical support. They are extremely helpful and have great technical skills.
[ STEPHEN  Nov 05, 2020 ]
Q
The sub will not produce sound unless I turn the volume up very high. It runs fine after it engages. I'm running power via a high level input connection through two ProMonitor 800s. I've tried changing the variable low pass crossover to no avail. This has occurred with two different AVRs. I'm currently running an onkyo tx-nr686. I'm an audio rookie, btw. Any suggestions?
[ Shmeeka  Oct 06, 2020 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Oct 22, 2020 ]  Staff
Q
300 watts RMS or Peak? The specification is unclear
[ Sriram  Dec 31, 2018 ]
2 answers
A
Sorry, I have no idea.
[ JOSEPH P  Dec 31, 2018 ]
A
Unfortunately I can't answer that as I don't really know the specs. I have had for over a year and love it though. It does a great job.
[ TODD  Dec 31, 2018 ]
Q
Would I be able to hookup this sub to my existing home stereo by way of hooking it up with rca going to back of my stereo speakers out rca on one end to speaker wire other end?
[ Sean  Oct 10, 2018 ]
3 answers
A
use speaker level connection for best results.
[ FRANK  Aug 13, 2020 ]
A
There are no RCA hookups on the subwoofer. Two sets of wire hookups that can accommodate monster cable are available as well as a lfe cable outlet. Mine is connected to the lfe. Wire your system with speaker wire of your choice and enjoy deep bass and distinct drums in every form of music. The subwoofer is quality throughout with adjustable bass input so you pump it up or calm it down at will. The crossover is automatic if using life and adjustable if not. There are no other hookups on the subwoofer.
[ JOSEPH A  Oct 18, 2018 ]
A
It's not 100% clear to me what you are describing, but you cannot go out RCA from any device in your system to another device with speaker wire. There are two ways to hook up this sub: 1. out from the stereo/receiver's LFE(sub) output with an rca to the sub's LFE(sub) input with rca. 2. speaker wire from your stereo/receiver's speaker left and right output into the sub's high level input speaker wire terminals, then out from the sub's high level output speaker wire terminals to your speakers. The second method is not ideal for multichannel setup(5.1, 7.1, etc), but works well for stereo setups with an old amplifier/stereo that does not have an LFE/sub output.
[ Thomas  Oct 15, 2018 ]
Q
I am looking for a clean modern white sub woofer budget at $800 - but must deliver thumping - when watching a movie...need to not only hear it - but feel it in the chest...any body know if this one can deliver that experience, if not any other recommendations...? if its not while, not a major deal. thanks very much!!!
[ Greg  Aug 08, 2015 ]
5 answers
A
Greg, I searched for quite some time and ended up with this one. Don't be fooled by its compact size....this puppy delivers clear bass sound that will shake the floor and windows and hopefully deliver the thumping you desire. For regular TV viewing, I leave the volume dial on the side just past 1/2 way, and I am quite pleased. It is quite easy to adjust to your liking for movies. VERY HANDY.
[ Allen B.  Aug 10, 2015 ]
A
I would say no, I have had mine cranked all the way up and though it shakes the walls it's not thumping in your chest. I'd look at SVS subwoofers in piano white.
[ JASON  Aug 09, 2015 ]
A
If you are looking for a big thump, this is probably not a good choice unless youbdo 2. I had to have white and it suited my needs, but only due to the color. I alphabet other Def white speakers and I wish there were more white choices. I think DefTech has larger subs, I would go with those if you are looking for thump. These have great sound but don't give you that chest pounding.
[ kyle  Aug 08, 2015 ]
A
Greg- Look no further. I have the Definitive Tech. Sub. hooked up to my Samsung 60" HDTV and I absolutely love it. I had to back off on the sub woofer volume as it was rattling the windows. It's been installed for 2 years and I haven't had one issue with it. I don't think you will be disappointed. Pull the trigger. GVN
[ GARY  Aug 08, 2015 ]
A
The prosub 800 is great and delivers tasty base for my music system. If you are really looking for serious base for your home theater, I would look to the prosub 1000. I'm very happy with it for my music and it does have n adjustment for output, but if you really want to feel it, you may be better served with a different unit. Good Luck, BIll
[ Bill  Aug 08, 2015 ]
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Definitive Technology ProSub 1000
In stock
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$499.00 Sale: -$50.00 off Sale: ends today

$449.00
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Larger woofer for deeper bass

The Definitive Technology ProSub 1000 offers these features:
  • uses a 10" woofer pressure-coupled to a 10" low bass radiator for deeper, richer bass
  • reproduces frequencies down to 18 Hz
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