Triangle Signature Theta is a 2-way Passive Bass Reflex Bookshelf speaker by Triangle. It was released in 2022. It features a 1" Horn-Loaded Tweeter and 1 x 6.5" Fibreglass Woofer.
The Signature standmount: one 165 mm mid-bass and the horn tweeter in the same piano-lacquered cabinet construction as the floorstanders. 11.5 kg for a two-way bookshelf.
The speaker has a frequency range of 45-20k Hz and a sensitivity of 90 dB. Triangle Signature Theta has an MSRP of 3200$ per pair.
Room Size Suitability
The size of the room where you plan to use the Triangle Signature Theta 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 | Average |
| Small Room | Good |
| Mid-size Room | Average |
| Large Room | Poor |
| Very Large Room | Bad |
(* 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.)
Triangle's Signature Series of Loudspeakers
Theta is a member of Triangle's Signature series of Passive speakers. Below you can see the main specs of these speakers.
Triangle Signature Series Speakers
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Frequency Response of the Triangle Signature Theta Speaker
Triangle Signature Theta has a Frequency response range of 45-20k Hz at ±3dB and Power Range of 25-130 watts. With a minimum frequency of 45 Hz, Theta delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
To focus on the subwoofers that are in a similar price range with Triangle Signature Theta, check out the Powered Subwoofers under $5000. Alternatively, find the Full list of Powered Subwoofers regardless of the price.
Here we have a comparison of how Theta's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
Among the speakers in our database with a max MSRP price of 5000$ (Pair), these are the 2 Passive Bookshelf speakers that have the deeper bass levels than the Triangle Signature Theta's 45Hz:
Crossover frequency of the Triangle Signature Theta?
The Crossover frequency of the Theta is set to 2700Hz. This is the threshold frequency where the higher frequency signals over this level are sent to the tweeter and the lower-frequency signals are sent to the woofer by the crossover component.
Impedance and Sensitivity
Triangle Signature Theta's nominal impedance level is
8 ohms but can go down to as low as
3.4 ohms, and has a sensitivity of
90 dB.
Sensitivity
Bookshelf Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Triangle Signature Theta is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
90dB of the Triangle Signature Theta is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise.
Minimum Impedance of the Triangle Signature Theta
Even though the nominal impedance of the Theta is 8 ohms, the minimum impedance level of this speaker according to Triangle is 3.4 ohms Triangle Signature Theta so while choosing an amplifier, you should ideally check if the unit you are considering can provide this impedance level.
Check the amplifiers that are in a similar price range to the Triangle Signature Theta:
Input Type
Theta features Binding post type connectors. Bi-amping and Bi-wiring are not possible.
Triangle Signature Theta External Dimensions and Weight
Triangle Signature Theta has external dimensions of (Height x Width x Depth) 18-5/16 x 9-3/16 x 14-5/8inch (465.0 x 233.0 x 372.0mm ).
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 Triangle Signature Theta is approximately 866.8cm2 / 134.4inch2.
WeightThe Triangle Signature Theta weighs 11.50kg / 25.3lbs per piece. Here is a comparison of how Theta's weight compares with the average, max and min weights in its class.
Weight
All Bookshelf Speakers
Weight
Bookshelf Speakers under $5000
Cabinet type and Materials
Triangle Signature Theta has a
Bass Reflex type cabinet. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
Port Position
Triangle Signature Theta is a front-firing port speaker , which gives you more flexibility compared to rear firing speakers when you need to place it close against a wall or other surfaces.
Wall Mounting
Theta doesn't sport any built-in mounting bracket, so you need an external structure to mount it on walls.
Does the Triangle Signature Theta come with a Grille?
Theta comes with grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible.
Recommended Accessories
Here is a list of accessories that we think you may need for the Triangle Signature Theta.
- Speaker Cable and Connectors
- Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find more affordable options too.
- Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.
- Speaker Stands: Stands bring your bookshelf speakers to ideal height (rule of thumb is to have the tweeter level with your ear in your listening position), helps stability and acoustical isolation.
Official Product Page
Official manufacturer's product page for the Triangle Signature Theta speaker can be found below:
Official Product Page for Triangle Signature Theta
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.