SEAS Prestige 27TBCD/GB-DXT (H1499) Tweeter
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Overview
SEAS Prestige 27TBCD/GB-DXT (H1499) Tweeter- 104mm - 6 ohm
High Definition aluminum/magnesium alloy dome tweeter with DXT® lens used in SEAS IDUNN and SEAS BRAGI kits. DXT refers to "Diffraction Expansion Technology." This technology uses what's called a DXT lens that acts as a wave guide to improve off-axis response.

27TBCD/GB-DXT is a High Definition aluminum/magnesium alloy dome tweeter with DXT® lens. An optimally shaped dome and a wide SONOMEX surround, both maufactured by SEAS, ensure excellent performance and consistency. The compensation magnet increases the sensitivity and reduces the magnetic strayfield and allows use in close proximity to CRT screens. A fine mesh grid protects the diaphragm. Stiff and stable rear chamber with optimal acoustic damping allows the tweeter to be used with moderately low crossover frequencies. This revolutionary DXT® tweeter addresses the major issues regarding directivity control in traditional loudspeaker designs. DXT® solves several well-known issues regarding directivity control, off-axis response, integration with midrange units and baffle diffractions.
The H1499 and H1571 are used in the Seas Idunn 2-Way Speaker Kit and Seas Bragi MTM Speaker Kit.




A taste of exceptional dispersion
I combined this with the SEAS tweeter ER18 Reed Cone, with the crossover at acoustical 12dB/octave circa 2.5kHz, as some famous projects on the Internet, with meager changes to the correct response in my baffle. No trouble with 60W amp power! This tweeter handles this well.
It is interesting to note how a technically correct system such as this coincided with a high emotionality during the hearings; many songs never sounded so magical as now!
No need to talk about the resolution of this tweeter; It is above average and reveals a realistic amount of detail without being clinical or analytical.
Very recommended!
Very nice, unique tweeters
I was expecting a metal face plate for the price, but I assume this is a manufacturing issue with the DXT lens. But, just know that it is plastic.
fantastic!
not only are the surprisingly soft sounding but the detail is amazingly clean without that typical metal dome harshness.
i paired these with some Seas H1488-08 woofers which are said to only get as high as about 2200hz before getting nasty.
I crossed these over at 2200hz 24/db and the blend of these two drivers is something enjoyable for sure.
I'm loving this combo, the bass is extraordinary and well controlled in the .41 cuft enclosures I put these in.
dont hesitate to pick these tweeters up they're great!
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