Sub 80-LP (Low Profile)
NEW! Versatile Placement! Need that extra “something” that only a quality powered subwoofer can provide? Don’t have the space for a larger, more traditional cabinet subwoofer? The Sub 80-LP, with its unique combination of an active 8" and passive 10" driver, may be your answer!
Our customers have been asking for a smaller, more designer-friendly subwoofer, and the Sub 80-LP (Low-Profile) delivers with performance, style, and space-saving versatility that works in almost any room. At just under 6" in height, you can place one under a coffee table, sofa, or even under a bed! Or, stand the subwoofer on its long edge and place it beside or behind furniture.
The SDA-120 subwoofer amplifier (included) can be placed near your receiver so that the only cable you need to run to the subwoofer is standard 14 gauge speaker cable.
The Sub 80-LP subwoofer, with its classic furniture-grade mid-gloss black finish, satisfies your aesthetic demands as well. Quality cabinet . . . check, high performance . . . check, placement options . . . check!
The key to the Sub 80-LP design is the 10” passive radiator used in conjunction with the active 8” woofer. Traditional sealed-cabinet designs may sound great, but they aren’t very efficient (especially with a smaller 8” driver) and require significantly more amplifier power. Ported cabinets can often play louder, but there are additional restrictions and compromises when designing around a very small cabinet. By using a passive radiator instead of an open tuned port, performance is increased without a corresponding increase in cabinet size.
The Sub 80-LP accomplishes this with a sturdy, sealed MDF cabinet, and the use of one active, long-throw 8" woofer plus a passive 10” woofer. The additional damping provided by this active/passive arrangement creates a much smoother response and minimizes over-excursion and distortion – a common problem when smaller, ported subwoofer designs are pushed beyond their limits.
The Sub 80-LP ships with our SDA-120 Subwoofer Amplifier which provides the ideal amount of power to support quality bass output, while remaining true to our “high quality audio at a reasonable price” mission.
The SDA-120 digital subwoofer amplifier was also carefully designed with features that allow the amplifier to be connected either directly to the LFE (subwoofer) output on your home theater receiver or "in-line" using the speaker cables already in place for existing speakers in a room. And with some pre-planning, it is possible to easily add this subwoofer into any zone of a whole-house audio system. Watch the video.
Please note that this design does not produce more output or lower frequency extension than our Level Two or Three Powered Subwoofers and is designed for moderate listening levels. While ideal for Bedrooms and Living/Great Rooms, the Sub 80-LP is not the ideal choice for a dedicated Home Theater or extremely large spaces. When you have the space, we will always recommend the Level Two or Level Three Powered Subwoofer. But when you need to hide it away, and only a low-profile cabinet will work - there's no better solution than the Sub 80-LP!
- Active 8" reinforced long-throw woofer with pulp cone and butyl rubber surround for long life
Passive 10" reinforced long-throw woofer with pulp cone and butyl rubber surround for long life
- Driver includes 1.5" voice coil with 6 layers of copper winding and 1 lb 5 oz ferrite magnet.
- Driver Impedance: 4 ohms
- Power handling: 100 watts RMS, 150 watts program
- Frequency response: 35 Hz - 200 Hz
- Sensitivity: 88dB
- 3/4" MDF wood cabinet with internal bracing, finished in a mid-gloss black lacquer
- Dimensions (HxWxD): 5.75" x 14.25" x 24.75"
- Weight (without amp): 24 lbs
- Shipping Dimensions (HxWxD): 30" x 19" x 10"
- Includes 120 Watt RMS High Efficiency Digital Amplifier with:
- - LFE (subwoofer) RCA-type Input
- - Speaker level inputs and outputs
- - Level Control
- - Phase Switch
- - Auto-on capability with dual color LED indicator (amber:stand-by; blue:on)
Room Layout and Speaker Placement
We are available to answer your questions via email and our toll free line: 866-HTD-AUDIO (866-483-2834), M-F 8am-6pm Central Time.
When choosing a set of speakers for your home theater, start with the center channel. On average, the center channel reproduces 50% of an entire movie soundtrack and over 90% of the dialogue. Choose a center channel speaker that fits your space as well as your budget.
Next, choose the front left and right speakers. Ideally, these should be as close a match sonically to the center channel speaker as possible. The front three speakers create the front soundstage similar to the way a pair of stereo speakers creates the soundstage in stereo music. If the front three speakers are not well matched, the soundstage starts to fall apart- imagine listening to stereo with a large wooden speaker in the left channel and a small plastic speaker in the right channel and you get the idea. So if you select the Level TWO Center Channel speaker, it is best to buy the Level TWO Main speakers in order to achieve the best sonic match and thus the best soundstage. Similarly, if you plan to use an in-wall speaker for the center channel, then your best match for the front left and right channels will come from two other in-wall speakers. If your situation does not allow for a perfectly matched set, you can still achieve decent imaging and panning effects as long as the speakers are not too different. Just be aware that without a matched set you are straying from the best possible audio performance.
Moving on to the surround speakers, again, the ideal setup is to use the same speakers in the back left and right as used for the front left and right. However, it is difficult to establish a "side" soundstage between the front and back speakers so having the back speakers match the front speakers is not nearly as important as having the front three match. Often, our customers who choose Level THREE for the front speakers, opt for Level TWO speakers or Middies in the back because of space considerations. The result, while not exact, is perfectly fine because we design these speakers for a similar tone.
For similar space and cosmetic reasons, in-wall speakers are often used in the back even though regular cabinet-style speakers are placed in the front. This is also acceptable, just be aware that the tone will be different so you are exchanging a little bit of sound quality for aesthetics. Should you go this route, choose an in-wall speaker that is designed to be as close in tone as possible so that panning effects are not distracting. We recommend using the HD-R65 (high definition round) or HD-W65 (high definition rectangular) when combining with our Level TWO or Level THREE cabinet-style speakers.
Finally, a Powered Subwoofer is necessary for reproducing the unique Low Frequency Effects channel recorded in most of today's movies. It can also help augment the lowest frequencies in every channel. We recommend you consider how well the powered subwoofer blends with your main speakers in music listening when selecting the most appropriate sub. Speaker drivers are typically built in the following sizes: 4", 5.25", 6.5", 8", 10", and 12". In general, you'll want to get a powered subwoofer that is 3 "sizes" larger than the driver found in your cabinet-style main speakers (or at least 2 sizes larger than found in your in-wall speakers). That is why our Level TWO Main Speakers (5.25" driver) are best matched with the Level TWO Powered Subwoofer (10" driver), the Level THREE Main Speakers (6.5" driver) are best matched with the Level THREE Powered Subwoofer (12" driver), etc.
A powered subwoofer, by definition, includes an amplifier. The signal sent from the home theater receiver/processor to the amplifier is therefore a "non-powered" signal that needs to be shielded from its surroundings. Shielding prevents unwanted interference, specifically a 60 Hz "hum" from nearby electrical wires, from being picked up and amplified. We offer a shielded powered subwoofer cable in lengths of 3 feet, 12 feet and 30 feet. All current HTD powered subwoofer models have been designed with the amplifier separate from the subwoofer cabinet, i.e. the amplifier is not built-in to the cabinet. Among other benefits, this allows flexibility in where the amplifier can be located. In most cases, you will want to place the amplifier very near the home theater receiver and use the short, 3 foot shielded subwoofer cable. Then, you can run standard 14 gauge speaker cable to the subwoofer location. Alternatively, you can locate the amplifier near the subwoofer cabinet (our Level TWO and THREE subwoofers are designed with a slot underneath in case you choose to place the amplifier with the subwoofer cabinet). In this type of installation, you will need to run the longer 12 foot or 30 foot shielded subwoofer cable to the subwoofer cabinet and then add a short length of standard 14 gauge speaker cable to connect the amplifier to the subwoofer. Keep in mind that the amplifier will need an electrical wall outlet near the subwoofer cabinet. This is obviously not a requirement when the subwoofer amplifier is located close to the home theater receiver.
The other speakers in a surround sound setup (front left, center and right plus all of the surround speakers) do not have amplifiers built-in. Instead, they are powered by amplifiers in the home theater receiver. It is difficult for an amplified signal to pick up interference, so regular, unshielded speaker cable will do. We recommend 14 gauge cable because, in our experience, it is difficult to notice an improvement with even thicker cable. When running cable behind a wall or in the ceiling, most building codes will require that you use UL rated CL-3 cable which has a higher fire retardancy than clear jacket cable. We offer this type of cable as well.
Many people still cling to the idea that a powered subwoofer is only necessary if you are using small bookshelf speakers. While a powered subwoofer can, and usually should be used to assist in the bass reproduction of every channel, its main purpose in home theater is to reproduce the Low Frequency Effects (LFE) channel. This channel (the ".1" in a "5.1" or "7.1" recording) was introduced with Dolby Digital and DTS and offers a completely unique conduit for low frequency information and effects. If you don't have a powered subwoofer, you're completely missing out on this exciting stream of low frequency information.
The LFE channel dramatically improves the impact and emotion of scenes in all types of movies. Imagine missing out on the resonance of the approaching T-Rex in Jurasic Park, not feeling the rumble of an earthquake, or missing the low tone that penetrates your body just before the bad guy jumps out at you in a scary movie. Emotion is often conveyed through a movie's soundtrack and a powered subwoofer makes the most impactful low notes really hit home. Invest in a good powered subwoofer- you'll be glad you did.
The definition of a "transmission line" differs depending on who you ask or what you read. A simple port by some definitions is a type of transmission line. But we distinguish our designs from simple ported designs because we don't just cut a hole in the cabinet and insert a straight plastic tube.
Instead, we build a channel in every cabinet that goes inside the cabinet and up at least aportion of the back wall with a length that is equal to a minimum 1/12 the desired wave length. In same cases this transmission line wraps around inside the cabinet. The difference is obvious in the improved bass performance (both depth and control) of our speakers.
Our longest transmission line, relative to the cabinet size, is seen in our Level TWO Powered Subwoofer.
We do not publish all of our mechanical drawings because we consider this proprietary, but we do show this cut-away as a good example of a key difference in our cabinet designs. This feature is only seen in much more expensive brands. Our lower price is simply the result of our business model of selling our products only direct to consumers.
It is also significant to note that all our cabinet-style speakers are "front ported". This design allows you to place your speakers close to, or even directly against, a back wall without negatively impacting bass peformance. While a front port design costs a little more to manufacture, its importance becomes apparent (especially in home theater setups) when determining the location of your speaker.
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