Definitive Technology BP-9040 is a 3-way Passive Radiator Floor-standing speaker by Definitive Technology. It was released in 2016. It features a 1" dome Tweeter, 3 x 4.5" Midrange and 1 x 8" Polypropelene Woofer. In addition, the speaker has a 300-watts (Class D Amp) built-in Sub-woofer. The speaker has a frequency range of 22-40k Hz and a sensitivity of 92 dB. Definitive BP-9040 has an MSRP of 1998$ per pair but can often be found around 1398$ per pair.
BP-9040 also gives the user optional Dolby Atmos capability by equipping the unit with upward-firing Dolby Atmos drivers.
Definitive BP-9040 Dolby Atmos Drivers
Room Size Suitability
The size of the room where you plan to use the Definitive BP-9040 is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:
| Listening Environment* |
Suitability |
| Near-field | Bad |
| Small Room | Poor |
| Mid-size Room | Average |
| Large Room | Good |
| Very Large Room | Average |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2, Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: > 400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)
Definitive BP-9040 Speaker Structure
Definitive Technology's BP Series of Loudspeakers
BP-9040 is a member of Definitive Technology's BP series of Passive speakers. The BP range are Definitive Technology's signature bipolar towers, radiating sound front and back, with built-in powered subwoofers on many models. Below you can see the main specs of these speakers.
See all 4 Definitive Technology BP models compared »
Definitive Technology BP Series Speakers
**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our links. As an Amazon Associate I earn from qualifying purchases.
Frequency Response of the Definitive BP-9040 Speaker
Definitive BP-9040 has a Frequency response range of 22-40k Hz at ±3dB and Power Range of 50-300 watts. With a minimum frequency of 22 Hz, BP-9040 delivers deep bass that will likely satisfy most listeners, especially those who enjoy music. However, movie enthusiasts and music fans who prefer a full range of sound may still benefit from adding a subwoofer.
Here we have a comparison of how BP-9040's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Floor-standing Speakers
Thinking about a subwoofer for the Definitive BP-9040?
Impedance and Sensitivity
Definitive BP-9040's nominal impedance level is
8 ohms and has a sensitivity of
92 dB.
Sensitivity
Floor-standing Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Definitive Technology BP-9040 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
92dB of the Definitive Technology BP-9040 is considered a high sensitivity compared to average stereo speaker which makes BP-9040 an easy to drive from Sensitivity perspective. If you are planning to power your speaker with a Tube amp which are generally very low power, the Definitive BP-9040 will be a good choice. Work out how loud the Definitive BP-9040 plays in your room →
What amplifier does the Definitive BP-9040 need?
At normal listening levels in a medium room, about
4.7–75 W
per channel into 8 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? Integrated amplifiers under $2,000, or every amplifier we cover.
Input Type
BP-9040 features 5-Way post, RCA type connectors. Bi-amping and Bi-wiring are not possible.
Work out what gauge speaker cable this run needs →
Definitive BP-9040's 5-Way post, RCA terminals
Definitive BP-9040 External Dimensions and Weight
Definitive BP-9040 has external dimensions of (Height x Width x Depth) 39-1/16 x 11-1/16 x 13-13/16inch (993.0 x 281.0 x 351.0mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of Definitive BP-9040 is approximately 986.3cm2 / 152.9inch2.
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe Definitive BP-9040 weighs 16.36kg / 36lbs per piece. Here is a comparison of how BP-9040's weight compares with the average, max and min weights in its class.
Weight
All Floor-standing Speakers
Weight
Floor-standing Speakers under $2000
Definitive BP-9040 - Top View
How does the Definitive BP-9040 compare to the Definitive Technology BP-9060?
One of the natural alternative to the Definitive BP-9040 is the BP-9060 which is located one step higher in Definitive Technology's Passive Floor-standing selection.
Check the Detailed Comparison of Definitive BP-9040 vs BP-9060 for more details.
Cabinet type and Materials
Definitive BP-9040 has a
Passive Radiator type cabinet and a MDF/Aluminum/Cloth finish.
Definitive BP-9040 Feet
Available colors
Definitive BP-9040 is available in Black.
What's in the Box of Definitive BP-9040?
Here are the items that are included inside the box of BP-9040:
- Tower loudspeaker
- 6.5-feet AC power cord
- Top-plate (installed)
- Stabilizer base
- 4 Floor guides
- 4 Carpet spikes
- 4 Screws
- 4 Nuts
- Owners Manual
- What Obsession Sounds Like card
Recommended Accessories
Here is a list of accessories that we think you may need for the Definitive Technology BP-9040.
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.