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Auditor

15

Protect Your Hearing

Frequency Response Input/Headphone Output, Left and Right Channel 

Measuring  output  and  input  600 Ohm,  Volume  control  Auditor  0 dB:  
‹10 Hz to ›200 kHz (-3dB). 

 

The large Frequency response range excludes that the frequency spec-
trum is limited at any point. Transmission of formants and octaves of an 
instrument’s sounds can not be narrowed.

Measurements

Audio Precision

05/04/09 12:33:42

Auditor Model 2910

-3

+3

-2

-1

+0

+1

+2

d

B

u

10

200k

20

50

100

200

500

1k

2k

5k

10k

20k

50k

Hz

Always reduce volume before you put on headphones or before you re-
move or plug in the headphone. This excludes louder clicks and pops 
reaching the ear. In addition, this can avoid unpleasant surprise that 
follows when a headphone’s lower impedance suddenly reproduces a 
much higher – even painful – level.

Always  take  care  of  your  hearing  when  monitoring  –  especially  with 
headphones. Reduce volume all the time as far as possible and expose 
your hearing to higher volumes only for short periods. As an orienta-
tion: German laws oblige ear protection in the professional area if the 
hearing is exposed to more than 85 dB sound pressure level  – this level 
can already damage the hearing in the long term. 

The Auditor can produce sound pressure levels that may be dangerous 
for  your  hearing  because  the  large  impedance  scale  of  headphones 
requires a large performance range. Always regulate volume by start-
ing from the zero position especially when you start working or switch 
headphones.

Summary of Contents for Auditor 2910

Page 1: ...Manual Auditor 120 volts headphone amplifier Model 2910...

Page 2: ...udio Signal Processor Product Auditor Model 2910 Compliance Engineer Wolfgang Neumann Test Basis EN50081 1 1992 EN50082 1 1992 EN60065 1993 EN61000 3 3 1995 EN60065 2002 EN55013 2001 EN55020 2002 EN61...

Page 3: ...nd of Ear Fatigue 9 REAR PANEL 10 Wiring 10 Voltage Selector Power Connector Fuse On Off Switch 11 XLR Sockets Unbalanced Connections e g RCA TS Jack 12 FRONT PANEL 13 Headphone Connection Recommendat...

Page 4: ...LWAYS FOLLOW THE ADVICE THEY GIVE The symbol of a lamp directs your attention to explanations of impor tant functions or applications Attention Do not attempt any alterations to this machine without t...

Page 5: ...electrical shock Electrical power Run this machine only from sources which can provide proper power at the prescribed rating When in doubt about a source contact your dealer or a professional electri...

Page 6: ...sign of hav ing been damaged This also applies to any situation in which the unit has not been subjected to any of these unusual circumstances but still is not functioning normally or its performance...

Page 7: ...ielded against HF interference Nonetheless you should carefully consider where you place the unit to avoid electrical disturbances It should be positioned so that you can easily reach it but there are...

Page 8: ...g with the magnifier effect of headphones has the advantage of safely hearing clicks or similar defects and helps in fine tuning cross fades or to judge tonal problems in individual tracks 120 Volts T...

Page 9: ...DVD in the USA Simon Heyworth s Super Audio Mastering in Great Britain or the Galaxy Studios in Belgium This 120 volt technology is based on dis crete operation amplifiers from SPL s own production d...

Page 10: ...itch setting reflects the correct local power line voltage Input output right channel The Auditor can be fed from any stereo signal path via its rear panel XLR sockets Headphone connection on the fron...

Page 11: ...er cord and case connection conform to VDE UL and CSA requirements The power fuse is installed behind the clack right to the power connector Power fuse ratings are 200mA slow blow 220 240 volts or 400...

Page 12: ...blish unbalanced connections easily and without adap tors for example from CD Players with RCA outputs or to HiFi power amplifiers with RCA inputs It is important to pay attention to the cor rect pola...

Page 13: ...uce volume level before you remove or plug in the headphone or when switching headphones This excludes louder clicks and pops reaching the ear In addition this can avoid unpleasant surprise that follo...

Page 14: ...y in a mono sum in extreme cases they lead to cancellations Volume The VOLUME level control allows you to increase or decrease the sig nal level at the headphone output from between 10dB down to 80dB...

Page 15: ...hing the ear In addition this can avoid unpleasant surprise that follows when a headphone s lower impedance suddenly reproduces a much higher even painful level Always take care of your hearing when m...

Page 16: ...01 0 1 1 2k 20k 4k 6k 8k 10k 12k 14k 16k 18k Hz Phase Response Input vs Output Left and Right Channel Measuring output and input 600Ohm Volume control Auditor 0dB This measurement shows the minimum d...

Page 17: ...phone output 6 35 mm stereo 1 4 TRS connection Pin wiring tip left ring right shaft GND Min Impedance connected 9 Power Amplifier Max Output Performance 1 7W 32 2dBm 1 kHz and 600 connection 360mW 25...

Page 18: ...sed in the package Direct SPL product support requires product registration Please fill out the guarantee card in printed letters and send it directly to SPL Or use the online registration form that m...

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