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6.

1.

Pro and Custom Bias Electrostatic
Headphone Socket
Custom Bias Adjustment (500V – 640V)
Impedance Adjustment (16

- 96Ω)

LED
Input Selector
AC Termination Adjustment

Normal Bias Electrostatic Headphone Socket

Dynamic Headphone Socket

2

P.5-6

Normal

Pro

OFF

580V

600V

620V

540V

Normal

Custom/Pro

Pro

Input

iCAN

Balanced

Speaker

OFF

640V

500V

96

16

Impedance

AC Termination

Bias

Pro

+

Normal

Electrostatic

Dynamic

iESL

64

24

1

2

3

4

5

6

7

8

2.
3.
4.
5.

P.4

7.
8.

P.4
P.4
P.5
P.5

P.5

P.6

Содержание Pro iESL

Страница 1: ...Pro iESL User Manual...

Страница 2: ...ws electrostatic headphones to Pro iESL be used with normal headphone loudspeaker ampli ers It requires an external power ampli er to drive the headphones Key features 1 Upgrades iCAN Pro to drive ele...

Страница 3: ...C Termination Adjustment Normal Bias Electrostatic Headphone Socket Dynamic Headphone Socket 2 P 5 6 Normal Pro OFF 580V 600V 620V 540V Normal Custom Pro Pro Input iCAN Balanced Speaker OFF 640V 500V...

Страница 4: ...ro Technology licensed from AMR Audio UK Assembled in China ESL link Loudspeakers Out R L In R L 3 DC Power Supply Connection ESL Link Loudspeaker Inputs Loudspeaker Outputs Balanced Signal Input 9 13...

Страница 5: ...is shared between both channels high impedance and low impedance for audio signals This a ects a complex set of parameters but audibly mainly a ects the presentation of the 3D soundscape AC Terminatio...

Страница 6: ...e socket 5 pin socket for modern Stax headphones 500V to 640V adjustable Bias Voltage 7 Bias Voltage setting Note Before turning on the iESL set the bias voltage according to the above table or accord...

Страница 7: ...at the same headphone ampli er volume setting Lower impedance settings are a much more di cult load for the driving ampli er Please adjust to suit listening preferences however in most cases the highe...

Страница 8: ...alanced Headphone Ampli er Input Connect this to any 4 Pin XLR equipped headphone ampli er you wish to use It is recommended that ampli er should be able to deliver at least 10V into 64 as much as 28V...

Страница 9: ...tions Maximum Output voltage Frequency Response Input Voltage Pro iESL Input Voltage iPower Power Consumption Dimensions Weight Warranty period Speci cations are subject to change without notice 640V...

Страница 10: ...that it will take a considerable time for the voltage to fall from a previous higher setting Therefore if testing di erent bias settings it is best to start with the lowest setting and slowly work up...

Страница 11: ...rostatic headphones as long as the Pro iESL impedance setting is 64 or 96 Notes on the iESL Design In principle an energiser for electrostatic headphones is a trivial challenge All we need are a pair...

Страница 12: ...e su ers from hysteresis at low levels causing distortion in quiet passages Meanwhile a 100 permalloy core cannot handle high levels without gross distortion Combining the two materials makes sure eac...

Страница 13: ...no current ows to discharge the capacitor bank Therefore if we charge the capacitor bank up to the nominal bias one time we can simply leave the charged capacitor bank to oat at the Bias Voltage In or...

Страница 14: ...nes The Signal Routing The entire signal switching for the input selection utilises gold plated silver contact miniature relays lled with an inert gas This makes sure the contacts will remain like new...

Страница 15: ...139 141 Cambridge Road Churchtown Southport PR9 7LN United Kingdom www i audio com Ver1 1...

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