5 out of 5
Pricing Note
Product Description
Manufacturer Part Number: TEBM65C20F-8
For audio applications that require extended frequency response, and superior off-axis response in a small form factor, choose the Tectonic TEBM65C20F-8 3-1/2" full-range transducer. Nearly all of the audio in the pass band of the driver is available up to 100° off-axis.
Key Features:
Tectonic TEBM65C20F-8 3-1/2" BMR Full-Range Speaker 8 Ohm
Tectonic TEBM65C20F-8 Balanced-Mode Radiator (BMR) features extended frequency response and wide dispersion compared to that of a conventional drive unit. It combines the benefits of Tectonic Elements bending-wave technology and pistonic modes of operation. It is ideally suited for compact audio applications that require a full-range, high performance acoustic solution such as a soundbar. An advanced ferrite-based motor is combined with special cone dampers to ensure a small size that outperforms conventional drivers, especially in off-axis performance.
For audio applications that require extended frequency response, and superior off-axis response in a small form factor, choose the Tectonic TEBM65C20F-8 3-1/2" full-range transducer. Nearly all of the audio in the pass band of the driver is available up to 100° off-axis.
Key Features:
- Amazing off-axis frequency response
- Small form factor with decent Xmax
- Perfect for modern speaker applications such as soundbars
Tectonic TEBM65C20F-8 3-1/2" BMR Full-Range Speaker 8 Ohm
Tectonic TEBM65C20F-8 Balanced-Mode Radiator (BMR) features extended frequency response and wide dispersion compared to that of a conventional drive unit. It combines the benefits of Tectonic Elements bending-wave technology and pistonic modes of operation. It is ideally suited for compact audio applications that require a full-range, high performance acoustic solution such as a soundbar. An advanced ferrite-based motor is combined with special cone dampers to ensure a small size that outperforms conventional drivers, especially in off-axis performance.
Product Details | |
|---|---|
| Brand | Tectonic |
| Model | TEBM65C20F-8 |
| Part Number | 297-2156 |
| UPC | 844632098789 |
| Unit of Measure | Each |
| Weight | 1.65 |
Product Specifications | |
|---|---|
| Nominal Diameter | 3-1/2" |
| Moving Mass Of Diaphragm (Mmd) | 5.6 |
| Power Handling (RMS) | 30 Watts |
| Power Handling (MAX) | 60 Watts |
| Impedance | 8Ω |
| Frequency Response | 60 to 20,000Hz |
| Sensitivity | 81dB 2.83V/1m |
| Voice Coil Diameter | 1" |
Thiele-Small Parameters | |
|---|---|
| Resonant Frequency (Fs) | 104Hz |
| DC Resistance (Re) | 7.1Ω |
| Voice Coil Inductance (Le) | 0.05mH |
| Mechanical Q (Qms) | 6.65 |
| Electromagnetic Q (Qes) | 1.11 |
| Total Q (Qts) | 0.95 |
| Compliance Equivalent Volume (Vas) | 0.04ft³ |
| Mechanical Compliance of Suspension (Cms) | 0.42mm/N |
| BL Product (BL) | 4.8T·m |
| Maximum Linear Excursion (Xmax) | 5mm |
| Surface Area of Cone (Sd) | 43.58cm² |
Materials of Construction | |
|---|---|
| Cone Material | Paper |
| Magnet Material | Ferrite |
Mounting Information | |
|---|---|
| Overall Outside Diameter | 4.25" |
| Baffle Cutout Diameter | 3.25" |
| Depth | 2.125" |
| # Mounting Holes | 6 |
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) | |
|---|---|
| Sealed Volume | 0.05ft³ |
| Sealed F3 | 107.8Hz |
| Vented Volume | 0.216ft³ |
| Vented F3 | 64.85Hz |
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
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Customer Reviews
By D. Hoover
Date: January 02, 2018
Great sounding speakers! They aren't the best, but awesome for the money. You can build a very high quality sound system with these since they are completely full range.
Rating: 
[4 of 5 Stars!]
[4 of 5 Stars!]
By Love shopping
Date: March 29, 2017
!!!!! Sounds great!!!
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
By sean sundra
Date: August 28, 2016
Generally speaking, gushing reviews of anything are kinda hard to believe - and even harder to trust. That said, I will reign in my review of this delightful FR speaker. I bought 4 of them (along w 2 134; tweeters) with the notion of building a.... hmmm...? Call it a line array/MTM/MTM active semi-portable bluetooth speaker thingy. That's close enough, I suppose. Anyway, to the point. This driver hits on every mark. It is accurate, detailed and very nimble - even at low volume. Bass notes are warm (not booming, of course) and possess a pleasant timbre that is nearly impossible to describe, but you sure as hell know it when you hear it. And all in a 3.5 FR driver for $15. This is gospel: if you are a DIY speaker builder/designer, you owe it to yourself to experiment with this driver.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
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