DXT-MON 182 Reference compact speaker

dxt_mon_182

Specifications

  • Frequency range (-3dB): ~ 36-> 20000Hz
  • Sensitivity (2,83V/1m): 84 dB
  • Crossover frequency: 1950Hz LR4
  • Nominal impedance: 4 Ohm
  • Principle: 2 ways, passive membrane
  • Net volume: 18l
  • Dimensions (HxWxD): 380x224x338mm

Applications

  • ambitious stereo applications in small to medium-sized rooms
  • passive near-field monitor
  • In home theater aplications as a main, center or rear speaker. With DXT-MON and DXT-Wave perfectly combinable

Properties

  • extremely neutral and precise reproduction
  • outstanding uniform directional behavior
  • lowest harmonic and non-linear distortions
  • the built-in drivers are of the highest quality
  • very impressive and effortless reproduction of even the lowest notes
  • Thanks to the passive membrane (Dayton DSA-215 PR or Seas SP22R) there are no problems frequently encountered with ventilated systems in terms of flow noise or "mid-range waste"

Components

Wavecor WF182BD09

Hobby Hifi 03 / 2014

These drivers (Note: WF182BD09 and WF182BD10) offer outstanding value for money. For audiophile and living room-friendly two-way floor boxes, they are simply perfect.

Seas DXT 27TBCD / GB (H1499)

Test

Dayton DSA-215PR or Seas SP22R

Measurements

Housing

  • 38mm front
  • Body 19mm
  • Interior walls with alubutyl (double) / HDF sandwich
  • Two struts between the side walls

Crossover

DXT-MON 182 Xover

 


 

DXT-Wave-Fusion

DXT_Wave_Fusion_Amp

Specifications

  • Concept
    • 3 ways d'appolito
    • fully active
    • DSP filtering
    • Bass reflex or closed
  • Crossover frequencies: 2050Hz LR4 / 220Hz LR4
  • Maximum SPL (free field / 35-40000Hz): 103dB / m
  • Dimensions (HxWxD): 1265x230x388mm
  • Net volume woofers: 2x30l
  • Frequency range (-3dB):
    • 32-40000Hz (bass reflex)
    • 43-40000Hz (closed)

Applications

  • Ambitious stereo applications in medium and larger rooms
  • As Main loudspeaker in the home cinema
  • ... extended with DXT-Mon as center / rear / surround

Properties

Thanks to activation with the DSP amplifier Hypex FusionAmp FA123, the excellent characteristics of the DXT-Wave have been further improved. The filtering between low - and midrange is now, unlike the passive version, with Linkwitz-Riley filters 4. Order. Passively, this slope would have been complicated and costly to accomplish. Also in terms of linearity and directional behavior small improvements could still be achieved.

Especially in terms of adaptability, the DXT-Wave-Fusion shows its strengths. Three different setups (Flat / Party / Near-Wall) can be easily changed at a flick of a switch . If necessary, individual circumstances can be dealt with at any time and suitable setups can be created.

Components

Wavecor WF182BD10

Hobby Hifi 03 / 2014

These drivers (Note: WF182BD09 and WF182BD10) offer outstanding value for money. For audiophile and living room-friendly two-way floor boxes, they are simply perfect.

Wavecor WF152BD06

Klang & Ton 02 / 2013

In this as in all other respects, the new driver is perfect: even at 95 decibel the driver has almost no distortions, has almost no resonance up to almost 10 kilohertz and shows a perfectly balanced frequency response ... The processing is Waveor-typical excellent - they only have the best materials installed.

Seas DXT 27TBCD / GB (H1499)

Test

Measurements

Housing


 

DXT-Wave

dxt_wave_stereo

Specifications

  • Nominal impedance: 4 Ohm
  • Crossover frequencies: 2050Hz LR4 / 220Hz LR2
  • Sensitivity (2,83V/1m): 85,5 dB
  • Maximum SPL (free field / 35-40000Hz): 102dB / m
  • Principle: 3 ways, d'appolito, bass reflex or closed
  • Dimensions (HxWxD): 1265x230x388mm
  • Net volume woofers: 2x30l
  • Frequency range (-3dB):
    • 34-40000Hz (bass reflex)
    • 45-40000Hz (closed)

Applications

  • Ambitious stereo applications in medium and larger rooms
  • As Main loudspeaker in the home cinema
  • ... extended with DXT-Mon as center / rear / surround

Properties

  • extremely transparent and precise reproduction
  • very convincing presentation of even the deepest notes
  • outstanding even, horizontal dispersion
  • intensive spatial representation even in acoustically not optimized rooms by reducing floor and ceiling reflections (=> d´appolito arrangement)
  • very low harmonic and nonlinear distortions
  • flexible as a bass reflex, closed or a mixed form of both. Thus also in difficult conditions applicable.

Components

Wavecor WF182BD10

Hobby Hifi 03 / 2014

These drivers (Note: WF182BD09 and WF182BD10) offer outstanding value for money. For audiophile and living room-friendly two-way floor boxes, they are simply perfect.

Wavecor WF152BD06

Klang & Ton 02 / 2013

In this as in all other respects, the new driver is perfect: even at 95 decibel the driver has almost no distortions, has almost no resonance up to almost 10 kilohertz and shows a perfectly balanced frequency response ... The processing is Waveor-typical excellent - they only have the best materials installed.

Seas DXT 27TBCD / GB (H1499)

Test

Measurements

Housing


 

DXT-MON-STAND Slim floorstanding speaker with Seas DXT 27TBCD / GB and Wavecor WF152BD06

dxp-mon-stand

Properties

  • exceptionally pure and neutral sound
  • superbly uniform directivity
  • outstanding resolution
  • lowest harmonic and non-linear distortions

DXT-MON-STAND is a, only 18cm wide tower speaker based on the reference speaker DXT-MON, The measurement results of both speakers are almost identical, apart from the noticeably more depth in the stand version (-3dB ~ 44Hz). Despite the small size, DXT-MON-STAND shows an impressive level stability.

The crossover is almost identical to DXT-MON. Only two resistors need to be adjusted.

Specifications

  • Nominal impedance: 4 Ohm
  • Crossover frequency: 1800Hz LR4
  • Sensitivity (2,83V/1m): 83,5 dB
  • Concept: 2 ways, bass reflex
  • Dimensions (HxWxD): 900x180x208mm
  • Net volume: 12,5l
  • Frequency range (-3dB): 44-40000Hz

Applications

  • Sophisticated stereo applications in small to medium spaces
  • Home theater: Main and Rear

Components

Wavecor WF152BD06

Klang & Ton 02 / 2013

In this as in all other respects, the new driver is perfect: even at 95 decibel the driver has almost no distortions, has almost no resonance up to almost 10 kilohertz and shows a perfectly balanced frequency response ... The processing is Waveor-typical excellent - they only have the best materials installed.

Seas DXT 27TBCD / GB (H1499): Test

measurements:

Further measurements: DXT-MON

Housing

18mm plate material, with internally glued aluminum butyl (double). The front has a thickness of 28mm.


DXT-MON

Properties

  • exceptionally pure and neutral sound
  • superbly uniform directivity
  • outstanding impulse response and resolution
  • lowest harmonic and non-linear distortions

Specifications

  • Nominal impedance: 4 Ohm
  • Crossover frequency: 1800Hz LR4
  • Sensitivity (2,83V/1m): 83 dB
  • Principle: 2 ways, bass reflex / passive membrane
  • Dimensions (HxWxD):
    • Version PM 8l: 308 x 204 x 244mm
    • Version PM 9,5l: 330 x 204 x 258mm
  • Net volume: 8l or 9,5l
  • Frequency range (-3dB):
    • Version PM 8l: 54 - 40000 Hz
    • Version PM 9,5l: 50 - 40000 Hz

Applications

  • Near field monitoring
  • High-end desktop speakers
  • High-quality stereo aplications in small to medium sized rooms
  • Home theater: Main / Center / Rear with subwoofer support

Components

Wavecor WF152BD06

Klang & Ton 02 / 2013

In this as in all other respects, the new driver is perfect: even at 95 decibel the driver has almost no distortions, has almost no resonance up to almost 10 kilohertz and shows a perfectly balanced frequency response ... The processing is Waveor-typical excellent - they only have the best materials installed.

Seas DXT 27TBCD / GB (H1499): Test

measurements:

Housing

16mm MDF, with inside alubutyl (double). The front has a thickness of 38mm. This is eg. achieved by gluing two 19mm plates.

 

Crossover

Cost example (ehighend.de Stand 05 / 2017)

Buy cabinet kits


Test Seas DXT 27TBCD / GB (H1499-06) 25mm dome with waveguide, 6 Ω

Datasheet © www.heissmann-acoustics.de
Measurements in DIN baffle in 70cm distance at 2,83V. Level scaled to 1m

Seas_h1499_27tbcd_dxt

 

Seas DXT 27TBCD / GB sound pressure & impedance (dispersion)

seas_27tbcd_dxt_Amplitude_

Very broadband and symmetrical superelevation from 800Hz to 10kHz, which can be easily equalized with the crossover. This is due to the waveguide and already a first indication of its effectiveness.

The efficiency reaches broadband 95dB but then drops down to 88dB in super high. In the case of linear tuning, therefore, no more than the named 88dB / 2,83V / m are achieved.

The impedance response is interference-free and shows a slightly asymmetrical "resonance hill" around 900Hz. More often seen in tweeters with coupling volume.

 Seas DXT 27TBCD / GB Sound pressure at angles (15 °, 30 °, 45 °, 60 °)

seas_27tbcd_dxt_winkel

Extremely even directivity into the super high tone. In large parts near the so-called constant directivity Behavior.

Seas DXT 27TBCD / GB Decay behavior

seas_27tbcd_dxt_Ausschwingverhalten

Even and fast decay over all frequencies.

 Seas DXT 27TBCD / GB level linearity 85, 90, 95 and 100dB

seas_27tbcd_dxt_Pegellinearität

Frequency response level corrected, based on the 85dB measurement

Even and low dynamic compression from 100dB / m <= 0,5dB (Please note the scaling => 20dB range)

Seas DXT 27TBCD / GB harmonic distortion

seas_27tbcd_dxt_Klirr

Extremely low harmonic distortion even at 100dB. K2 increases evenly with the level and remains below the 100% mark until 2dB starting at 1kHz.

K3 increasing below 2,5kHz, above that at the measurability limit.


Rating


Frequency response / directional behavior:5 5 out of stars
Range:4.5 5 out of stars
Power handling:4.5 5 out of stars
Consisty:4.5 5 out of stars
Haptics:4.5 5 out of stars
Price-performance:4.8 5 out of stars

Summary


Nowadays the straightening behavior of loudspeakers is getting more and more important. The Seas DXT stands out in this discipline from the competition. No other known tweeter of this size shows as uniform straightening as the Seas DXT.

However, a careful baffle design is required to maintain this behavior. In "normal widths" baffles (~ 20cm) for example. the Seas DXT tends to widen significantly at angles around 3kHz.

Work very well:

  • a practically nonexistent ...
  • or a very wide baffle.

See also here

Also in all other disciplines of the Seas DXT shows without blemish and blame.

 

Test Seas Noferro-900 Visaton Waveguide WG-148R 4 Ω dome tweeter with Visaton waveguide

Datasheet © www.heissmann-acoustics.de
Measurements in 17x35cm baffle in 70cm distance at 2,83V. level scaled to 1m

Seas Noferro-900 Visaton Waveguide WG-148R

4 Ω dome tweeter with waveguide

Noferro900_W148R_2     Noferro900_W148R_1

With the new WG148R Visaton has placed an excellently processed waveguide for 25 mm tweeters on the market. This was combined with the Seas Noferro-900, with excellent results.

To mount the Seas Noferro-900 to the WG148R you only have to widen the screw holes of the tweeter from 4,5 to approx. 6mm.

Directivity horizontal (0-90 ° in 15 ° steps)

Noferro900_W148R_Winkel

Due to the waveguide system-related symmetrical elevation in the frequency range from 1-10kHz.

The Seas Noferro 900 and the Waveguide WG-148R are a perfect match. Both mechanically and, and in particular acoustically. Directivity is extremly even, up to highest octaves. Just above 3kHz there is a slight widening. This can be further improved by clever connection to an 5-7 inch mid-bass driver. That behavior fitted perfectly with midrange speakers of the 15cm class. Crossover points around 2-3kHz promise excellent results.

It should be noted: The combination was measured in a maximum narrow baffle (17cm). Such is usually very beneficial for waveguides in terms of controlled directivity.

In the 2. Image, frequency response was roughly linearized by DSP. A shelving filter and a PEQ were set.

Sound pressure standardized at angles to 15 °

Noferro900_W148R_Winkel2

 impedance

Noferro_WG148R_Impedanz

Flawless impedance.

Very pronounced resonance peak at 900Hz, which is characteristic of a ferrofluid-free tweeter.

Burst decay

Noferro_WG148R_Ausschwingen

Even and rapid decay over all frequencies. Perfectly.

Harmonic Distortions 85, 90 and 95dB

Noferro_WG148R_Klirr

The harmonic distortions are extremely low. Only at 10kHz scratched K2 at 95dB / m at the 1% mark ... inaudible. K3 and higher orders are negligible. Crossovers around 1,5kHz with> = 18dB / Oct can be realized without any problems.

Rating


Frequency response / directional behavior:5 5 out of stars
Range:5 5 out of stars
Power handling:4.5 5 out of stars
Constance / Without Rating /:0 5 out of stars
Haptics:4.5 5 out of stars
Price-performance:5 5 out of stars

Summary


The Seas Noferro-XNUMX with the Visaton Waveguide WG-XNUMXR measures itself ...

... excellent in all disciplines! There is not much more to say about it.

The sum of the EIAs is incidentally, in view of the results, hard to believeXNUMX € (WGXNUMXR: XNUMX € and NoferroXNUMX XNUMX €, as of October XNUMX).

 

Test Seas Noferro 900 (H 1025-06)

Datasheet © www.heissmann-acoustics.de
Measurements in DIN baffle in 70cm distance at 2,83V. Level scaled to 1m

Seas Prestige Noferro 900 (H 1025-06)

27mm dome tweeter 6 ohm

Seas Prestige Noferro 900 (H 1025-06)

Seas Noferro 900 (H 1025-06) Sound pressure & impedance (dispersion)

Seas Noferro 900 (H 1025-06) Sound Pressure Impedance Scattering

Excellent linearity. Full level already from 1000 Hertz. The efficiency is above average with 92 / 2,83V for an 25mm dome with a nominal impedance of 6Ω.

The amplitude, impedance and impedance paths of the two drivers are almost congruent.

Seas Noferro 900 (H 1025-06) sound pressure at angles (15 °, 30 °, 45 °, 60 °)

Seas Noferro 900 (H 1025-06) Angle Measurements

Very clean and uniform bundling behavior.

Also in super high for a tweeter with 26mm voice coil very wide beam.

Seas Noferro 900 (H 1025-06) decay behavior

Seas Noferro 900 (H 1025-06) Swinging out

Overall, very smooth and rapid decaying over all frequencies. Minimally delayed by 16kHz.

Seas Noferro 900 (H 1025-06) harmonic distortion

Seas Noferro 900 (H 1025-06) harmonic distortion

Very low 3rd order distortion. Even at 95dB / 1m it always stays below 0,3%, and that from 1khz. K2 is strongly dependent on the excitation signal, rising below 3kHz. Recommended separation:> = 2kHz (18dB / octave) Overall very low distortion.

Rating


Frequency response / directional behavior:4.5 5 out of stars
Range:4 5 out of stars
Power handling:4 5 out of stars
Continuity of series / Without rating /:0 5 out of stars
Haptics:4 5 out of stars
Price-performance:5 5 out of stars

Summary


As a classic shows what he can.
In all disciplines, the Seas Noferro 900 shows very good readings.
Noteworthy are the ruler-smooth frequency response on the axis and the very clean omnidirectional behavior.
A really fine tweeter.
As already said the Klang & Ton (04/2000):

There is simply nothing wrong with this tweeter ...

 

Kit Samira equipped with Seas Noferro 900 (H 1025-06) and Monacor SPH-176

 

Kit Samira with Seas Noferro 900 and Monacor SPH-176

Specifications

  • Impedance: 8 Ohm
  • Sensitivity (2,83V/1m): 85 dB
  • Dimensions (HxWxD): 356 x 212 x 356 mm
  • Crossover frequency: 1850 Hz

Applications

  • Sophisticated hi-fi
  • Home theater
  • Free lineup

Properties

  • deep and clean bass reproduction (-3dB 48Hz, -8dB 36Hz)
  • Balanced frequency response (+ -2dB from 50-20000Hz)
  • very good horizontal omnidirectional behavior
  • level stability
  • compact design
  • very fine resolution tweeter (without ferrofluid)
  • Nominal impedance 8 Ohm

Measurements

Components

Seas Noferro 900 (H 1025-06)

Sound + sound 4 / 2000

There is simply nothing wrong with this tweeter ... Whether it was the very linear frequency response with its excellent omnidirectional behavior or the very low distortion from 1kHz, the NoFerro 900 always played a class higher than the price suggested.

Heißmann-Acoustics

Test

Monacor SPH-176

Hi-fi self-construction, online magazine 2008

The SPH-176 has the makings of a modern classic. For a small stand box extremely practical.

Sound + sound 06 / 2003

The SPH-176 gives almost the ideal picture of a classic mid-woofer.

ILMAG 11

A successful combination + very linear frequency response + many successful detail solutions + quite large linear stroke + very good price