Denovo Audio SEOS-12 Waveguide 2/3 Bolt Matte with 1-3/8"-18 TPI Adapter

Brand:|Model: SEOS-12
The Denovo SEOS (Super Elliptical Oblate Spheroid) waveguide emerged from a community research and design effort, to provide good horizontal high frequency coverage for consistent sound anywhere in a room.
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Part # 300-7070
  • Nearly linear horizontal coverage for great off-axis response
  • Reduced vertical coverage for less floor/ceiling bounce and improved imaging
  • Designed for use with compression drivers crossed over at 950 Hz or above
  • 1" throat for use with 2/3-bolt compression drivers or 1-3/8"-18 TPI compression drivers with included adapter

Product Details

Denovo Audio SEOS-12 Waveguide 2/3 Bolt Matte with 1-3/8"-18 TPI Adapter

The SEOS-12™ (Super Elliptical Oblate Spheroid) waveguide, from Denovo, is the end result of a community-based research and design effort to create the optimum waveguide for home audio use. Controlled directivity is realized in the consistant sound on the horizontal plane for seamless sound throughout the room, no matter the seating location. A side benefit is reduced vertical coverage for minimized floor and ceiling bounce.

Traditional horns have a horn "sound" (also referred to as honking) and internal reflections that cancel out certain frequencies or cause distortion. Denovo's SEOS waveguide provides high dynamics and SPL without the honking and added distortion plagued by other horns. Designed to be used with 2/3-bolt 1" compression drivers, but also attaches to standard 1-3/8"-18 TPI compression drivers with the included adapter. Available in matte and gloss finish.

Specifications: • Throat diameter: 1" • Driver mounting: 2/3-bolt and 1-3/8"-18 TPI (with adapter) • Recommended minimum crossover point: 950 Hz • Overall dimensions: 13.2" W x 6.5" H x 3.5" D, Cutout: 12" W x 5" H (oval shape due to screwhole locations).

Product Specifications
  • Mounting Type2-Bolt/3-Bolt
  • Entry / Throat Diameter1"
  • ConstructionABS
Denovo Audio SEOS-12 Waveguide 2/3 Bolt Matte with 1-3/8"-18 TPI Adapter
  • BrandDenovo Audio Inc
  • ModelSEOS-12
  • Part Number300-7070
  • UPC848864003122
  • Product CategoryHorns & Waveguides
  • Unit of MeasureEA
  • Weight2.1 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Denovo Audio SEOS-12 Waveguide 2/3 Bolt Matte with 1-3/8"-18 TPI Adapter
in the Horns & Waveguides product category.


Denovo Audio SEOS-12 Waveguide 2/3 Bolt Matte with 1-3/8"-18 TPI Adapter

Product Q&A

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Denovo Audio SEOS-12 Waveguide 2/3 Bolt Matte with 1-3/8"-18 TPI Adapter

The description says that this is to be used with 1" compression drivers, but can this horn be used with a 1" silk dome tweeter? If so, what about the 1 1/8" Dayton DC28F silk dome tweeter? (FYI, I have no issues with drilling new holes in the ABS)

Asked by: paradoxjeff
The throat of the horn would need to be modified and a mounting "platform" would need to be fabricated in order to use this with a silk dome tweeter, but if you are able to make those changes I see no reason why it won't work.
Answered by: MattP
Date published: 2015-04-17

What is the vertical pattern?

Asked by: Lawrence dM
The vertical pattern depends on the frequency the horn is seeing. 40*@ the crossover point and slowly reduced as the frequency goes up. For home audio, everyone in the seated area will be happy if they can look down the throat of the horn. Off axis is a different story though---reflections, standing waves, furniture etc. all change the sound. That's why in recording studios--the monitors are directed at the mixer & operator.
Answered by: Joe from San Francisco
Date published: 2015-05-28

What is the horn made from? Will the Dayton horn driver fit easily?

Asked by: dave251
This horn is made from ABS plastic and yes, it will fit any standard 2 or 3 bolt mount and with the included adapter, it will also work with 1-3/8" threaded drivers.
Answered by: MattP
Date published: 2014-06-28
  • 2015-09-02T08:10CST
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