Hertz ESK 130.5 Leaflet

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All specifications subject to change without notice_13.C

Technical Specifications

Electro-Acoustic Parameters

Component 

- 

Two way system

Woofer size 

mm (in.) 

130 (5)

Tweeter diaphragm 

mm (in.) 

26 (1)

Power handling  

W peak 

225

 

W continuous 

75

Impedance 

Ω 4

Frequency response 

Hz 

70 ÷ 23k

Sensitivity 

dB SPL 

93

Woofer magnet size D·d·h  mm (in.)  80 x 32 x 13 (3.15 x 1.26 x 0.5)
Tweeter magnet size D·d·h  mm (in.) 

19 x 3 (0.75 x 0.12)

Woofer voice coil Ø 

mm (in.) 

25 (1)

Tweeter voice coil Ø 

mm (in.) 

20 (0.8)

Woofer magnet 

- 

High density flux ferrite

Tweeter magnet 

- Neodymium

Woofer cone 

- 

Water repellent pressed paper

Tweeter dome 

- Tetolon

Crossover type 

- 

LP/HP @ 3 kHz - 6/12 dB Oct.

Component adjustment 

dB 

+2; 0; -2

Woofer weight 

of one component 

kg (lb.) 

0,7 (1.54)

Tweeter weight 

of one component 

kg (lb.) 

0,03 (0.07)

Crossover weight 

of one component 

kg (lb.) 

0,17 (0.37)

 

 

Tweeter Woofer 

D 

mm 

20 110

Xmax 

mm 

- 3

Re 

Ω 

3,7 3,1

Fs 

Hz 

1350 82

Le  

mH 

0,02 0,18

Vas 

l 

- 6,05

Mms 

g 

0,19 7,9

Cms 

mm/N 

0,07 0,47

BL 

T·m 

1,5 4

Qts 

- 

0,9 0,68

Qes 

- 

2,7 0,8

Qms 

- 

1,5 4,6

Spl 

dB 

92 93 

ET 26.5
1.  Tetolon dome, with hemispheric profile and wide roll surround; extremely    
 

light weight and properly damped for smooth and extended high frequency   

 response. 
2.  Acoustic compression chamber; high efficiency and off-axis optimized 
 response.
3.  CCAW (Copper Clad Aluminium Wire) ultra light ferrofluid-cooled mobile 
 

voice coil.

4.  High energy neodymium magnet. 
5.  Low carbon content plates for maximum magnetic permeability and high 
 

heat dissipation.

6.  Damping material; controlling acoustic resonances insuring clear, high 
 

frequenc tones.

EV 130.5
1.   V-cone

®

 for best off-axis response and clear mid-high frequency detail.

2.   Water-repellent treated paper cone; butyl rubber surround.
3.   Pure copper voice coil, wound on aluminium former, for exceptional thermal   
 

and mechanical capacity.

4.   Large motor assembly for excellent control of voice coil.
5.   Low carbon content plates for maximum magnetic permeability and high 
 

heat dissipation.

6.   Rubber magnet cover provides damping to the basket and motor structure    
 

and protects from abrasions and damages.

7.   DIN size basket coated with scratch-proof, corrosive-resistant material. 
8.   Tin-plated, high current terminals.
9.   Silver-plated lead wires, for maximum reliability and conductivity.
10. Epoxy glue for basket and motor system provides perfect coupling.
11. Curve memory Nomex spider for consistent, reliable performance.

- Tweeter mounting accessories and woofer grille included