Phonitor 2 Headphone Monitoring Amplifier

Home , Preamplifier

3 4 Phonitor 2 30° 40°

5 ° 5 2 2 5 2 °

° 7 N A I 5 5 X 1 °

M Matrix

-16 -1 Cr/A All -17 5 9 -14 -1 Off -1 Cr d 1 2 ossfee Angle 2 -

-1 5 0 -0 2 nte .2 .9 - Ce r -1 Source -0 Solo IR 6 .6 - . 1 8 - 9

- 2 XLR 1 RCA 0 L R - . 0 . 3 R

i 2 - t

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XLR 2 Off 5 h

- Stereo VU Cal

Mono 0 +12

Output Ø 2

0 L

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L R 1

0 Mute Off 7

9 - 120 V Audio Rail Preamplifier Model 1280 • Made in Germany Volume Headphone Monitoring Amplifier

This User Manual is optimized for User Manual Acrobat Reader. Interactive buttons may not appear in other applications. Welcome and thank you for choosing the Phonitor 2.

The Phonitor 2 is the ultimate headphone monitoring amplifier and delivers up to 3.7 W output power.

The Phonitor 2 is also an excellent preamplifier that can drive power amplifiers or active speakers.

The SPL 120V Rail Technology makes the Phonitor 2 an outstandig device in terms of dynamic range, signal-to-noise ratio and headroom delivering an exceptional sound experience with invincible serenity, transparancy and realness.

3 4 Phonitor 2 30° 40°

5 ° 5 2 2 5 2 ° Voltage Selection: M CAUTION DIP SWITCH WIRING ° 7 1. Remove Fuse Holder N A I 5 5 X ON BOTTOM SIDE: XLRs: balanced, Pin 2 = Hot (+) ° RISK OF ELECTRIC SHOCK 1 2. Flip Over 3. Reinstall M Matrix 1 ON: Output +12dB 3 ON: RCA -10dBV to +4dBu For unbalanced operation Fuses: 115V AC: T 1 A L 250 V DO NOT OPEN bridge Pin 3 to GND.

230V AC: T 500 mA L 250 V 2 ON: Output + 6dB 4 ON: Sources 1:1 to Output

-16 AVIS: RISQUE DE CHOC ÉLECTRIQUE • NE PAS OUVRIR RCAs: Unbalanced, Tip = Hot (+) SOURCES -1 OUTPUT

Cr/A All -17 5

-14 3 1

19 2 L R L R L

- R Off -1 REMOTE IR Cr d 1 2 ~ 115V AC / ~230V AC ossfee Angle 2 - 50 Hz / 60 Hz, P max. 35 W -1 5 0 -0 2 nte Learning Volume Up/Down: .2 .9 - Ce r -1 Source -0 Solo IR 6 .6 - . 1. Press LEARN button below 1 8 - 9 L

- 2 2. Point your remote at VUs XLR 1 RCA 0 L R - . 0 . 3 R

and press a button for

i 2 - t

- g 6

XLR 2 Off 5 h

VOLUME DOWN (LEDs flash 1x) e

3. Repeat until LEDs flash 3x

Phonitor 2

- Stereo VU Cal

Mono 0 +12

PGM LEARN

Output Ø 2

0 L

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5 Serial

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nt a +6dB

4. Press a button for This output can also drive balanced headphones

- Number

L R 1

9 (Gender changer may be required).

VOLUME UP (LEDs flash 1x)

0 5. Repeat until LEDs flash 3x

Mute Off 7 R L R L R L 9 - 3 2 1 120 V Audio Rail Preamplifier Made in Germany IR REMOTE OUTPUT SOURCES Model 1280 • Made in Germany Volume Headphone Monitoring Amplifier

With the optional Expansion Rack you can mount the Phonitor 2 into a 19 inch rack and switch between four different audio outputs (see more information here).

2 Content Phase Ø 21 Stereo switch 22 Getting started 4 Laterality 22 Front view 5 VU meters 23 Rear view 6 Attenuate the sensitivity of the VU meters 23 Bottom view 7 IR Remote control 24 DIP switches 7 DIP switches 25 120V Rail Technology 8 Level increase of the outputs 25 Comparisons 9 RCA input HiFi level / Studio level 25 Phonitor Matrix 11 Slave Thru 26 Basics of stereo listening 11 Phonitor Matrix activation for the XLR outputs 26 Stereo listening with an “traditional“ headphone preamplifier 12 Specifications 27 How does the Phonitor Matrix work? 13 Inputs 27 Angle 14 Outputs 28 Crossfeed 15 Internal operating voltages 30 Setting of Crossfeed and Angle 16 Power supply 30 Adjustment of the Phonitor Matrix 18 Dimensions (incl. feet) 30 Matrix On/Off 19 Weight 30 Source selection 20 Important Notes 31 Output selection 20 Declaration of CE Conformity 31 Solo 21 Getting started

Read thoroughly and follow the instructions as well as the security advices of the Quickstart which is enclosed in the scope of delivery! You can also download the Quickstart here.

By pressing the -Button you get to the table of contents.

By pressing the -Button you get to the front view of the unit.

By pressing the -Button you get to the rear view of the unit.

By pressing the -Button you get to the bottom view of the unit.

By pressing the -Button you get to the previous content.

4 Front view

Crossfeed 3 Angle 4

3 4 Phonitor 2 30° 40°

5 ° 5 2 2 5 2 °

° 7 N A I 5 5 X 1 °

M Matrix

-16 -1 Cr/A All -17 5 9 -14 -1 Off -1 Cr d 1 2 ossfee Angle 2 -

-1 5 0 -0 2 nte .2 .9 - Ce r -1 Source -0 Solo IR 6 .6 - . 1 8 - 9

- 2 XLR 1 RCA 0 L R - . 0 . 3 R

i 2 - t

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XLR 2 Off 5 h

- Stereo VU Cal

Mono 0 +12

Output Ø 2

0 L

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nt a +6dB

L R 1

0 Mute Off 7

9 - 120 V Audio Rail Preamplifier Model 1280 • Made in Germany Volume Headphone Monitoring Amplifier

7 Volume 13 Headphone Connector

5 Rear view

Mains Voltage 16

Mains Switch 15 17 Analog Audio Inputs

Voltage Selection: CAUTION DIP SWITCH WIRING 1. Remove Fuse Holder 2. Flip Over 3. Reinstall RISK OF ELECTRIC SHOCK ON BOTTOM SIDE: XLRs: balanced, Pin 2 = Hot (+) 1 ON: Output +12dB 3 ON: RCA -10dBV to +4dBu For unbalanced operation

Fuses: 115V AC: T 1 A L 250 V DO NOT OPEN bridge Pin 3 to GND.

2 ON: Output + 6dB 4 ON: Sources 1:1 to Output

230V AC: T 500 mA L 250 V AVIS: RISQUE DE CHOC ÉLECTRIQUE • NE PAS OUVRIR RCAs: Unbalanced, Tip = Hot (+)

OUTPUT SOURCES

3 2 1

R L R L R L ~ 115V AC / ~230V AC REMOTE IR 50 Hz / 60 Hz, P max. 35 W Learning Volume Up/Down: 1. Press LEARN button below 2. Point your remote at VUs L and press a button for VOLUME DOWN (LEDs flash 1x) Phonitor 2 3. Repeat until LEDs flash 3x R PGM LEARN Serial Number 4. Press a button for This output can also drive balanced headphones VOLUME UP (LEDs flash 1x) (Gender changer may be required). 5. Repeat until LEDs flash 3x R L 3 R 2 L R 1 L Made in Germany IR REMOTE OUTPUT SOURCES

19 Audio Outputs

6 Bottom view DIP switches

Factory setting

7 120V Rail Technology In our 120V Rail Technology the audio signals are processed with an unequalled +/-60V DC, which corresponds to twice that of discrete operational amplifiers and four-times that of semiconductor operational amplifiers.

The 120V Rail Technology reaches outstanding technical and sonic performances. Technically especially in terms of dynamic range and headroom and sonically especially in reproducing the finest details and delivering a totally relaxed sounding audio experience. Music sounds absolutely natural.

8 Comparisons These diagrams show how our 120V Rail Technology compares to other circuits.

The direct relation between operating level and maximum level is fundamental for the classification: the higher the operating level, the higher the maximum level a circuit can handle. And since virtually all essential acoustic and musical parameters depend on this relation, a higher operating voltage also has a positive impact on the dynamic range, distortion limit and signal-to-noise ratio.

Operating Voltage Dynamic Range Volt dB 120 145

100 140

80 135 60 130 40

125 20

0 120 + / - 15 Volt + / - 60 Volt OPA 134@30 V SPL-OP@120 V

9 Do bear in mind that dB scales do not represent linear but rather exponential increases. A 3 dB increase corresponds to doubling the acoustic power, +6 dB correspond to twice the sound pressure level, and +10 dB correspond to twice the perceived loudness. When it comes to volume, the 120V Rail Technology exhibits a performance, in regard to maximum level and dynamic range, that is twice that of common components and circuits given that its values are approximately 11 dB higher. THD measurements show a difference of more than 8 dB compared to the TL071 at 30 V — in terms of sound pressure level, that corresponds to an improvement of more than 130%. The operating level most commonly used for audio equipment is +/- 15 volts. Max. Audio Level THD&N

dBu dBu 35 -105 30 -107 25 -109 20

15 -111 10 -113 5

0 -115 OPA 134@30 V SPL-OP@120 V TL 071@30 V SPL-OP@120 V

10 Phonitor Matrix Basics of stereo listening When listening to speakers sound coming from the right is not only perceived with the right ear (red line) but it is also perceived with the left ear (green line). The sensation is time delayed, lower in level and has a reduced frequency range (this applies to the left speaker accordingly).

Sound from the right side Sound from the left side

It arrives later because the signal travels a distance of approx. 340 meters per second and the distance from the right speaker to the left ear is longer than it is to the right ear. It is quieter and does not deliver the full frequency range, because the signal of the right speaker does not directly arrive at the left ear but is partially reflected and absorbed by the head.

11 Stereo listening with an “traditional“ headphone preamplifier When listening to music with a traditional headphone amplifier, the right ear only perceives the right signal (red line) and the left ear only perceives the left signal (green line).

In contrast to listening to speakers the delayed and quieter signal of the respective opposite side is missing.

As a result to this super-stereo-effect reverb and delay effects as well as EQ and panorama adjustments are perceived more intense on headphones.

12 How does the Phonitor Matrix work? The Phonitor Matrix calculates the interaural time difference (Speaker Angle) and interaural level difference (Cross- feed) with their specific frequency responses to deliver a speaker-like listening experience on headphones.

The super-stereo-effect is eliminated and all reverb and delay effects as well as EQ and panorama adjustments are perceived correctly on headphones.

The headphone mix therefore translates well to speakers.

13 In Detail An analog filter design creates interaural time and level differences for six different speaker placements. This analog filter design is controlled by the crossfeed and angle parameters.

Angle With the ANGLE switch you adjust the interaural time difference which is related to the

placement of the speakers. ° °

° °

14 Crossfeed Crossfeed defines the interaural level difference. The six crossfeed values approximate the influences of room size, reflection and absorption characteristics.

Frequency corrected level difference at max. Crossfeed and 30° Angle of Frequency corrected time difference at max. Crossfeed and 30° Angle of the right channel (red = right signal, green = left signal) the right channel (red = right signal, green = left signal) µs

k k Hz k k Hz

The interaural level difference and the interaural time difference are frequency-corrected because the sound is reflected and absorbed by the head in a non-linear fashion.

15 Setting of Crossfeed and Angle Both parameters (Crossfeed and Angle) define the interaural level difference and the interaural time difference. To reproduce the exact placement of the loudspeakers, first choose the Angle parameter closest to your real speaker placement. Afterwards choose the recommended Crossfeed Parameter (see table on page 17, e.g.: Angle: 30°, Crossfeed: 3).

A vast number of factors, e.g. type of loudspeakers, room acoustics or the individual perception, influence the stereo-listening. This is why the Phonitor 2 offers six different switch positions to finely adjust the Crossfeed and to best match to your speaker playback.

Phonitor 2 – + – + % %

Matrix

-16 -1 -17 5 9 -14 -1 -1 Cr d 1 2 ossfee Angle 2 -

-1 5 0 2 - Source Solo IR - 8 9

2 -

- Stereo VU Cal

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0 7

9 - Model 1280 • Made in Germany Volume

Table: Settings of Crossfeed and Angle Angle parameter Crossfeed parameter Interaural level difference Interaural time difference (µs) Speaker angle MAX 0,03 90 10° 5 0,06 130 15° 4 0,08 165 20° 15° 3 0,12 210 25° 2 0,16 250 30° MIN 0,20 320 35° MAX 0,24 133 15° 5 0,35 165 20° 4 0,40 210 20° 22° 3 0,47 220 25° 2 0,50 230 25° MIN 0,60 250 30° MAX 0,40 205 20° 5 0,49 235 25° 4 0,56 260 30° 30° 3 0,64 280 30° 2 0,70 300 30° MIN 0,76 335 40° MAX 0,26 290 30° 5 0,34 355 40° 4 0,40 400 45° 40° 3 0,49 455 45° 2 0,50 480 55° MIN 0,60 535 70° MAX 0,34 350 40° 5 0,44 405 45° 4 0,50 450 50° 55° 3 0,58 490 55° 2 0,52 525 65° MIN 0,70 555 70° MAX 0,31 375 40° 5 0,40 450 50° 4 0,44 505 60° 75° 3 0,54 560 70° 2 0,60 600 80° MIN 0,64 635 90°

Phonitor 2 Adjustment of the Phonitor Matrix – + – + % %

Matrix By using the Crossfeed switch (3) and the Angle switch (4) you can adjust the headphone playback through the 6 17 -1 -15 - -1 Phonitor 2 to your room with your loudspeaker setup. 19 4 - C -1 Phonitorro ed 2 A 1 2 ssfe ngle -2 - 1 5 0 • Play some audio material you know well with the Phonitor 2 and go to a place where you usually listen to 2 - – + – + % % Source Solo IR - 8 Matrix 9

2 music through speakers. -

16 5

- - 1

7 5

1 3

9 4

- -

• Place the Matrix switch in position Cr/A. Stereo VU Cal

- 4

C 2 1

r d 1 2

o e A 4

s e 2

sfe ngl -

Mono 0 +12

- -

Output Ø 2

5 0 0 L

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2 5

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• Toggle between headphones and loudspeakers by using the Output switch (9). nt - a +6dB

Source Solo

- 1 9

- 0

7 9 -

• Set the Angle switch according to your loudspeaker placement (see page 14). 6

2 -

Phonitor Model 1280 • Made in Germany

V e o

lum

Stereo VU Cal 4

• Then set the Crossfeed switch to the value that comes closest to your familiar loud- -

– + – +

% %

Mono 0 +12

Output Ø

0 L

Matrix

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speaker-listening sound.

-1 -

7 5 1 0

- 7 - 9 Listen to the instruments panned in the stereo field. These instruments shall have 9 14 - -1 -1 Cr d 1 2 ossfee Model 1280 A• nMadegle in Germany 2 V - olume the same positions on headphones. -1 Phonitor5 2 0 2 - Source Solo IR - 8 9 2 – + – + % % - - Matrix

Stereo -16 VU Cal 4 -1

2 -17 5

4 -1

9 4

Mono 0 +12

Output C Ø 2 1

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r d 1 2

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C s e n le 2 t t r sf

- g e li

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nt - a +6dB

- -

1 1

5 0

0 Source 7 Solo

9 IR - - 8 9

2 - Model 1280 • Made in Germany 18 V e olum -

- Stereo VU Cal

Mono 0 +12

Output Ø 2

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0 7

9 - Model 1280 • Made in Germany Volume Output

Phonitor 2 Center function – + – + % % When activated (Matrix switch = All) you control the intensity of the center signal with the Cen-

MatrixMatrix ter switch (5) . -16 -1 -17 5 9 -14 -1 -1 If the stereo width is narrowed through changes in Crossfeed and Angle (so as to correspondCr d 1 2 ossfee Angle 2 -

-1 to your actual loudspeaker setup), the phantom center may likely sound too intense while 5 0 2 - Source Solo IR - 8 mixing under headphones. You normally would counteract by lowering the mid signals in the 9

2 -

6 mix. However, listening to that mix on loudspeakers the phantom center appear to quiet.

- Stereo VU Cal

Thanks to the possibility to lower the headphone center level of the Phonitor 2 between 0.3 4

Mono 0 +12

Output Ø 2

0 L

a y

C t t

to 2.0 dB you can adjust the center signal to the correct volume in relation to the L/R stereo - e li

e e r

nt a +6dB

image. Therefore the phantom center gains the correct volume in relation to the L/R stereo

0 7 9 image on loudspeakers too. - Model 1280 • Made in Germany Volume

Phonitor 2 Matrix On/Off – + – + % %

With the Matrix switch (2) you can activate the Phonitor Matrix – with Center control (All) or Matrix -16 -1 without (Cr/A). In Off position the Phonitor Matrix is deactivated . -17 5 9 -14 -1 -1 Cr d 1 2 ossfee Angle 2 - By default the Phonitor Matrix is available for headphone outputs only. The Speaker Out- -1 5 0 2 - puts (19) at the rear of the unit are not fed by the Phonitor 2 matrix. You can activate theSource Phoni- Solo IR - 8 9

2 - tor Matrix for the speaker outputs at the rear by setting the DIP switch 5 on the bottom of the Phonitor 2 to ON

(see ”DIP switches“ on page 7).

- Stereo VU Cal

Mono 0 +12

Output Ø 2

0 L

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nt a +6dB

19 -

0 7

9 - Model 1280 • Made in Germany Volume Phonitor 2 – + – + % % Source selection

Matrix Phonitor 2 The Phonitor 2 is not just a headphone monitor amplifier. It is also a preamplifier three audio sources, XLR 1, -16 7 -15 – + – + 1 % % - -1 9 4 1 Matrix - C -1 XLR 2 and RCA. ro d A 1 2 ssfee ngle 2 - - -16 -1 1 5 -17 5 0 2 - - 1 9 4 Source Solo 1 The chosen source feds he headphone output on the front as well as the XLR audio outputs - IR - - C 1 8 r d 9 1 2 o e A ssfe ngle 2 2 - - - 1 on the rear of the Phonitor 2. - 5 0

5 2

Source Solo -

9 - Stereo VU Cal

+12

Mono 0

Output Ø 2

3 L

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nt a

+6dB

Stereo VU Cal 1

Output selection 2

7 Mono 0 +12

- -

Output Ø 2

0 L

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With the Output switch (9) you send an input signal to a selected output – headphones or - e li

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Model 1280 • Made in Germany

Vo e 1

9 lum

loudspeakers (XLR audio outputs on the rear). 0 7

9 - In the Mute position no signal passes through to the outputs. The VU meter are illuminated in red. Model 1280 • Made in Germany Volume

Warning: Never connect a mono jack cable to the headphone output (front panel stereo jack). Make sure that the stereo jack is fully inserted, otherwise a short circuit might damage the headphone amplifier!

20 Phonitor 2 – + – + % %

Matrix

6 17 -1 -15 - -1 19 4 - C -1 ro ed A 1 2 ssfe ngle -2

Solo - 1 5 0 2 - Source Solo IR - With the Solo switch (12) you can monitor the left or right channel of the stereo signal 8 9

2 -

individually. 5

- Stereo VU Cal

In Off position you hear the stereo signal. Set the Solo switch in position L to hear only the left

Mono 0 +12

Output Phonitor 2 Ø 2

0 L

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channel and in position R to hear only the right channel.

– –

- + +

% %

7 9 Matrix - With Solo activated you hear the selected channel only on the respective side – this is called “Solo-in-Place”. Model 1280 • Made in Germany Vo e -l1u6m -1 -17 5 However, if you like to hear the selected channel on both sides set the stereo switch to mono. E.g. immediatelly 9 -14 -1 -1 Cr d 1 2 ossfee Angle 2 - you experience if the mid and high frequencies are similar. -1 5 0 2 - Source Solo IR - 8 9

2 -

Phase Ø - Stereo VU Cal

Mono 0 +12

Output Ø 2

0 L

With the Phase switch (11) you invert the phase of the left or the right channel (180°).

a y

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7 9 If the Phonitor 2 is set to mono at the same time you hear only the differences of both chan- - nels. Therefore you are able to precisly evaluate whether signals are placed in theModel middle. 1280 • Made If in Germany Volume the signals are not exactly placed in the middle, you still can hear them.

21 Phonitor 2 – + – + % %

Matrix 6 17 -1 -15 - -1 19 4 - C -1 Stereoro d switch A 1 2 ssfee ngle 2 -

-1 5 0 2 - By using the Stereo switch (10 ) you can switch the audio signal to Stereo, Ste- Source Solo IR - 8 9

2 - reo with Laterality control and Mono. In Mono mode, both stereo channels are

summed. The mono signal maintains the same loudness, because both stereo

2 -

Phonitor Stereo VU Cal 4

Mono 0 +12

channels are each reduced by 6 dB. -

2 – –

Output Ø + + 0 % L %

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Matrix

7 9 - 6 17 -1 -15 - -1 19 4 Model 1280 • Made in Germany - C Volume -1 Lateralityr d 1 2 ossfee Angle 2 -

-1 5 0 2 - LateralitySource refers to the deviation of sound perceptionSolo to either side of the ears. With the Lat- IR - 8 9

2 - erality control (6) you can compensate perceived volume differences between channels that

may be due to a hearing impairment.

- Stereo VU Cal

Mono 0 +12

Output Ø 2

0 L

This control differs from conventional balance controls. If one channel is attenuated, the a y

C t t

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other one is increased at the same time. This means that, e.g. when hard left, the level of

0 7

9 - the left channel increasesModel 1280 • Made by in2.25 Germany dB while the right channel is attenuatedVolume by 2.25 dB. This control has a narrower range than conventional balance controls. Its resolution is very fine, which means it can be pecisely adjusted. Set the Stereo switch to Laterality to control the laterality (see above).

22 VU meters The VU meters (1) display the input levels for the selected source. The meter indicates levels from -20 dB to +5 dB.

Phonitor 2 0 dB corresponds to +4 dBu. – + – + % %

The ballisticsMatrix of the VU meters guarantee an optimal visual perception. The Phonitor 2 – + – + % % time calibration of the VU meters complies with the requirements -16 of the -1 7 5

Matrix -1 9 -14 -1 - 6 C 1 17 -1 -15 r dBBC. The rise time up to 0 dB is about 300 ms.1 2 - -1 ossfee Angle 2 19 4 - - C -1 ro d A 1 - 2 ssfee ngle 2 1 5 - 0 - 2 1 - 5 0 2 Source Solo - Source Solo IR - IR - 8 8 9 9 2 2 - - -

Attenuate the sensitivity of the VU meters

Stereo VU Cal

Mono 0 +12

Stereo VU Cal

Output Ø 2

With the VU Cal switch (14) you can lower the sensitivity by 6 or 120 dB so that the meters go up L

a y

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- 1

0 +12 Mono

0 2

Output Ø 7 9

to +17 dB intput level if the switch is set to “+12”. - L

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nt a +6dB

Model 1280 • Made in Germany

Vol e 1 um

0 7

9 - Model 1280 • Made in Germany Volume

23 IR Remote control The volume potentiometer can be remotely controlled using any infrared (IR) remote control. oltae election CAUTION DIP SWITCH WIRING RISK OF ELECTRIC SHOCK s The special feature is that the Phonitor 2 learns your remote and not the other way around. You do not need a learn- B B B uses DO NOT OPEN

RCAs

able remote control. Take, for example, the remote control of the CD player. Out of the many buttons there are two

R L R L R L you hardly use if at all. Assign Volume up / Volume down to these two buttons and let the Phonitor 2 learn them. ma earninOutput olume own • While learning the IR remote control commands set the Output switch (9) to Mute. VU meters light up red. Phonitor 2 • Press the IR REMOTE LEARN button (18) on the rear of the unit. The volume potentiometer Matrix turns all the way left (you hear the motor of the volume potentiometer running). • Point your remote control towards the VU meters (1) and push the button you wish to use to lower the volume. The motor of the volume potentiometer stops once per push. Press the same button repeatedly until the motor of the volume potentiometer stops three times within a short interval – programming this button is then completed. • Point your remote control towards the VU meters (1) and push the button you wish to use to increase the volume. The motor of the volume potentiometer stops once per push. Press the same button repeatedly until the motor of the volume potentiometer stops three times within a short interval – programming this button is then completed. (Learn mode ends automatically after the second button is learned.)

24 DIP switches With the DIP switches (20) on the bottom of the unit the following settings can be chosen:

Level increase of the outputs By using the DIP switches 1 and 2 you can increase the level of the outputs (XLR and headphone).

DIP switch 1: ON = The outputs (XLR and headphone) are boosted to +12 dB.

DIP switch 2: ON = The outputs (XLR and headphone) are boosted to +22 dB.

DIP switch 1 and 2: ON = If both DIP switches 1 and 2 are ON, a boost of +24 dB is applied.

RCA input HiFi level / Studio level If you connect a HiFi audio device (e.g. a CD player) to the analog RCA input (18), you can amplifiy the signal from HiFi level to studio level with DIP switch 3.

The sources are then equal in level when you switch between XLR and RCA (provided that a studio signal is pres- ent at the XLR input).

DIP switch 3: ON = The RCA input is boosted from -10 dBV (HiFi level) to 0 dBu (studio level).

25 Slave Thru By using DIP switches 4 the chosen input passes directly to the XLR output on the rear.

DIP switch 4: ON = The chosen input passes directly to the XLR output without being affected by any control, except Phase inversion). (Slave Thru).

Phonitor Matrix activation for the XLR outputs With DIP switch 5 the Phonitor Matrix can be activated for the XLR outputs on the rear. This is useful if you want to connect a balanced headphone to the XLR outputs.

DIP switch 5: ON = The Phonitor Matrix is activated for the XLR outputs.

26 Specifications Inputs XLR inputs • Neutrik XLR, balanced, Pin 2 = (+) • Impedance: ca. 20 kohms • CMR: -82 dBu (at 1 kHz) • Max. Input level: +32.5 dBu RCA inputs • Unbalanced • Impedance: ca. 10 kohms • Max. Input level: +32.5 dBu

27 Outputs Headphone output Warning: Never connect a mono jack cable to the headphone output (front panel stereo jack). Make sure that the stereo jack is fully inserted, otherwise a short circuit might damage the headphone amplifier!

• 6.35 mm TRS connector • Pin wiring: Tip = Left, ring = right, sleeve = GND • Impedance: 0.18 ohm • Attenuation factor: 180 @ 40 ohms • Frequency range: 10 Hz to 300 kHz ( -3 dB) • Crosstalk at 1 kHz: -90 dB • THD & N: 0.00091% (at 0 dBu, 1 kHz, 100 kohms load) • Noise (A-weighted): -103 dB • Dynamic range: 134 dB

28 Max. Output power (at +30 dBu @ 1 kHz) • 2 x 1 W at 600 Ohm impedance • 2 x 2 W at 300 Ohm impedance • 2x 3.7 W at 120 Ohm impedance • 2x 2.9 W at 47 Ohm impedance • 2x 2.7 W at 32 Ohm impedance Line outputs • Neutrik XLR, balanced, Pin 2 = (+) • Frequency range: 4 Hz to 300 kHz (-3 dB) • Crosstalk at 1 kHz: -106 dB • THD & N: 0.00085 % (at 0 dBu, 1 kHz, 100 kohms load) • Noise (A-weighted): -104 dB • Dynamic range: 134 dB

29 Internal operating voltages • Analog: +/- 60 V Power supply • Mains voltage (switchable): 230 V AC / 50 Hz or 115 V AC / 60 Hz • Fuses: 230 V: T 500 mA; 115 V: T 1 A • Power consumption: max 40 VA Dimensions (incl. feet) • (WxHxD) 10.94 x 3.94 x 12.01 in (278 x 100 x 305 mm) Weight • 9.48 lbs (4.3 kg), unit only • 11.90 lbs (5.4 kg), shipping

30 Important Notes Version 3.1 – 05/2019

Developer: Bastian Neu

This manual includes a description of the product but no guarantee as for specific characteristics or successful results. Unless stated otherwise, everything herein corresponds to the technical status at the time of delivery of the product by SPL electronics GmbH. The design and circuitry are under continuous development and improvement. Technical specifications are subject to change.

© 2016 SPL electronics GmbH. This document is the property of SPL and may not be copied or reproduced in any manner, in part or fully, without prior authorization by SPL. Sound Performance Lab (SPL) continuously strives to improve its products and reserves the right to modify the product described in this manual at any time without prior notice. SPL and the SPL Logo are registered trademarks of SPL electronics GmbH. All company names and product names in this manual are the trademarks or registered trademarks of their respective companies.

Declaration of CE Conformity The construction of this unit is in compliance with the standards and regulations of the European Community.