PEX Tectonic TEBM65C20F 8 3 1/2" BMR Full Range Speaker 8 Ohm P5475707PEX-297-2156 https://cdnimages.opentip.com/full/PEX/PEX-297-2156.jpg Tectonic TEBM65C20F 8 3 1/2" BMR Full Range Speaker 8 Ohm Manufacturer Part Number: TEBM65C20F-8HighlightsAmazing off-axis frequency responseSmall form factor with decent XmaxPerfect for modern speaker applications such as soundbarsTectonic TEBM65C20F-8 3-1/2\" BMR Full-Range Speaker 8 OhmTectonic 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 Specifications Nominal Diameter:3-1/2\" Power Handling (RMS):20 Watts Power Handling (max):40 Watts Impedance:8 ohms Frequency Response:80 to 20,000 Hz Sensitivity:81 dB 2.83V/1m Voice Coil Diameter:1\" Thiele-Small Parameters Resonant Frequency (Fs):86 Hz DC Resistance (Re):7.2 ohms Voice Coil Inductance (Le):0.055 mH Mechanical Q (Qms):4.9 Electromagnetic Q (Qes):1.09 Total Q (Qts):0.89 Compliance Equivalent Volume (Vas):0.04 ft.3 Mechanical Compliance of Suspension (Cms):0.65 mm/N BL Product (BL):4.33 Tm Diaphragm Mass Inc. Airload (Mms):5.25g Maximum Linear Excursion (Xmax):3.5 mm Materials of Construction Cone Material:Paper Magnet Material:Ferrite Mounting Information Overall Outside Diameter:4.25\" Baffle Cutout Diameter:3.4\" Depth:1.88\" # Mounting Holes:6 Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) Sealed Volume:0.1 ft.3 Sealed F3:84 Hz Vented Volume:0.2 ft.3 Vented F3:50 Hz Tectonic TEBM65C20F-8 3-1/2\" BMR Full-Range Speaker 8 Ohm Brand:Tectonic Model:TEBM65C20F-8 Part Number:297-2156 UPC:844632098789 Product Category:Midrange / Midbass Drivers & Full-Range Speakers Unit of Measure:EA Weight:1.6500 lbs. 5475707 844632098789 5.90lbs 0.00 0.00 0.00
Tectonic Elements
14.68 In Stock
customer review - by , January 1, 2018
4/ 5stars
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.
customer review - by , March 3, 2017
5/ 5stars
!!!!! Sounds great!!!
customer review - by , August 8, 2016
5/ 5stars
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.
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Tectonic TEBM65C20F-8 3-1/2" BMR Full-Range Speaker 8 Ohm

Rating 5 | 3 reviews
By Tectonic Elements
See other products from PEX
Upc: 844632098789
Model: PEX-297-2156
Price: $14.68
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$7.45 To [ 20149 ] Estimated Delivery Date: Mar 5, 2021 to Mar 9, 2021
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*  Price: $14.68 ea X 1 qty = $14.68
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Product Description

Manufacturer Part Number: TEBM65C20F-8

Highlights
  • 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 OhmTectonic 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 Specifications
  • Nominal Diameter:3-1/2"
  • Power Handling (RMS):20 Watts
  • Power Handling (max):40 Watts
  • Impedance:8 ohms
  • Frequency Response:80 to 20,000 Hz
  • Sensitivity:81 dB 2.83V/1m
  • Voice Coil Diameter:1"
Thiele-Small Parameters
  • Resonant Frequency (Fs):86 Hz
  • DC Resistance (Re):7.2 ohms
  • Voice Coil Inductance (Le):0.055 mH
  • Mechanical Q (Qms):4.9
  • Electromagnetic Q (Qes):1.09
  • Total Q (Qts):0.89
  • Compliance Equivalent Volume (Vas):0.04 ft.3
  • Mechanical Compliance of Suspension (Cms):0.65 mm/N
  • BL Product (BL):4.33 Tm
  • Diaphragm Mass Inc. Airload (Mms):5.25g
  • Maximum Linear Excursion (Xmax):3.5 mm
Materials of Construction
  • Cone Material:Paper
  • Magnet Material:Ferrite
Mounting Information
  • Overall Outside Diameter:4.25"
  • Baffle Cutout Diameter:3.4"
  • Depth:1.88"
  • # Mounting Holes:6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume:0.1 ft.3
  • Sealed F3:84 Hz
  • Vented Volume:0.2 ft.3
  • Vented F3:50 Hz
Tectonic TEBM65C20F-8 3-1/2" BMR Full-Range Speaker 8 Ohm
  • Brand:Tectonic
  • Model:TEBM65C20F-8
  • Part Number:297-2156
  • UPC:844632098789
  • Product Category:Midrange / Midbass Drivers & Full-Range Speakers
  • Unit of Measure:EA
  • Weight:1.6500 lbs.

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
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Write a Review
By D. Hoover
Date Added: Tuesday 02 January, 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!]
By Love shopping
Date Added: Wednesday 29 March, 2017
!!!!! Sounds great!!!
Rating: [5 of 5 Stars!]
By sean sundra
Date Added: Sunday 28 August, 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!]
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