My Projects - PSE 144
 

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Construction/Assembly of PSE 144 Horns   

4 Way Speaker system

 

 

PSE 144 horn

BRAND: Red Spade Audio

 

1 off Tweeter rec. cross  1250Hz

Sensitivity 110db

Amplification: Tube monoblock DXT 17

4 off Midrange cross between 250Hz - 400Hz

Sensitivity 103db

Amplification: Tube monoblock DXT 30

Control by DEQX HDP4 - Master : configuration: biamp 

 

MIDBASS

BRAND: Phl Audio

8’ model 2002

Sensitivity 90db

Amplification: H2O s250 

Control by DEQX HDP4 - Master : configuration: sub 

 

BASS:

BRAND: Phl Audio

 7031 cross 30Hz - 180Hz

Sensitivity 98db

Amplification: H2O s250 

Control by DEQX HDP3 - Slave : configuration: sub 

 

 

PSE 144 horn

BRAND: Red Spade Audio

 

Bring live music home

Nothing compares to the energy and emotion of live music

Engineered to deliver the ultimate live music experience, 
PSE-144 is not like any other speaker on the market.

Extreme dynamics

 

Experience the exhilaration of life-like dynamic impact, free from the compression inherent in many systems that rob music of its natural energy and life.

Extreme clarity

Every subtle nuance recorded is revealed with a degree of clarity and detail that eludes conventional loudspeakers. Turn up the volume as loud as you like – the unsurpassed midrange detail retains its finesse.

Extreme fidelity

When the music begins, PSE-144 simply disappears. There is no hint of its size or location in the room. The music is simply arrayed in front of you. Each instrument is precisely positioned within the sound stage. An extreme level of engineering belies its artistic form, with every potential source of coloration carefully eliminated through many years of extensive research and development.
PSE-144 is a point source horn designed to be the ultimate reference loudspeaker.
 


Nothing like other horns

Horns have long been considered problematic by serious audio enthusiasts. Typical problems include major coloration and listening fatigue. Their imaging is often a weak point, often a considerable step back from conventional designs. In all these areas, PSE-144 represents a step forward.

Why it doesn't sound like other horns

A key to overcoming all these problems is that PSE-144 radiates from an ideal point source.

PSE-144 loads a compression driver and four symmetrically mounted midrange drivers into a single horn that combines their outputs into a coherent point source. The elliptical horn launches an idealized point source into the listening room with unparalleled dispersion control extending down to 250 Hz.

Conventional multi way horns separate each horn physically, such that their outputs have severe off axis comb filtering. This tends to damage their coherence with unavoidable damage to imaging. Often the apparent source size is very much tied to the physical form of the horn. Some horns may space a tweeter as much as 7 wavelengths apart at the crossover point.

The point source difference is well illustrated by listening with your head in front of the horn mouth. All sound appears to come from a region at the throat the size of a tennis ball. Even a near field monitor will tend to sound disjointed at this range, with treble and midrange separated from each other.

 

Extreme dispersion control

Where most designers pay lip service to off axis response, PSE-144 represents a state of the art approach. Effective radiation control is maintained across the entire bandwidth. This is illustrated in the waterfall plot below.


The horn profile is carefully engineered to radiate sound with a constant directivity approach. This offers a range of benefits, but two in particular stand out.

Firstly, this results in very stable imaging that doesn't fall apart when moving out of the sweet spot.

Secondly, many room acoustics problems are greatly tamed, with the result being far greater fidelity and tonal accuracy.

It simply sounds real

Perhaps the strongest feature of this loudspeaker is that it simply gets out of the way - it sounds real. From the moment the music starts, the desire to analyse is put aside and a musical experience unfolds. The music is simply there arrayed out in front of you. Nothing is missing, nothing is exaggerated, nothing draws attention.

Specifications


Fully active or passive hybrid
1” compression driver
4 x 4” paper cone midrange drivers
Horn 250 – 20k +/- 0.5 dB
Impedance: 8 ohms
Sensitivity: 100 dB
Recommended amplifier: 3 – 200W

 

MIDBASS

BRAND: PHL Audio

Model:2002

 

Resonance frequency - fs:    66Hz

Equivalent volume - Vas:      16.67 liter

Qms  3,6 

Qes   0,55   

Qts    0,48 

Nominal resistance - Zn  6Ohm

DC resistance - re:       6 Ohm

Effective cone area - Sd: 222 cm2

Compliance – Cms:      0,23  mm/N

Moving mass – mms:  23,8 g

Inductance 1 KHz – Le: 0,23  mH

Force factor – Bl: 9,94 N/A

Nominal power – Pn:  200 W 

Efficiency – SPL: 90 dB

Linear excursion (x-max)  6 mm

   

BASS:

BRAND: Phl Audio

Model:7031

 

 

TYPICAL CHARACTERISTICS

 

 

 

 

Rated impedance

Z

W

8

Half space sensitivity  (1W@1m)

-

dB SPL

97

Usable freq. range

-

Hz

30-1000

Power handling capacity  (AES)

-

W

750

Max Sound Pressure Level

SPLmax

dB SPL

122

Min. impedance modulus

Zmin

200Hz

7

Voice-coil inductance @ 1kHz

Le1k

mH

1.80

Voice-coil inductance @ 10kHz

Le10k

mH

0.82

BL product

BL

N/A

22.7

Moving mass

Mms

kg

0.180

 

THIELE-SMALL PARAMETERS: TYPICAL (QC LIMITS)

 

 

 

Resonance frequency

Fs

Hz

35(±0.5)

DC Resistance

Re

W

5.5(±0.5)

Mechanical quality factor

Qms

1

4.9

Electrical quality factor

Qes

1

0,43

Total quality factor

Qts

1

0,40

Mechanical suspension compliance

Cms

10-6.m/N

115

Effective piston area

Sd

m2

0,128

Equivalent Cas air load

Vas

m3

0,260

Max linear excursion

Xmax

±mm

8.0

Linear displacement volume

Vd

10-3.m3

1.024

Half-space efficiency

h0

%

2.5

Unity load volume

Vas.Qts2

10-3.m3

41.4

 

ABSOLUTE MAXIMUM RATINGS

 

 

 

Short term max. input voltage

Vmax

V

160

Max.excursion before damage

Xdam

±mm

16

Ambient operating temperature

Ta

°C

-10 to +50

Storage temperature

-

°C

-20 to +70

Environemental withstanding Q

-

-

Tropical

 

APPLICATION INFORMATION

 

 

 

Air volume occupied by the driver

-

10-3.m3

7

Speaker net mass

 

kg

10.9

 

 

   

 

 

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