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Summary of Contents for SPL Phonitor 2 1280
- Page 1 Manual Version 2.2 – 03 /2016 Phonitor 2 Models 1280/1281 120 Volt Amplifier for Headphones, Active Speakers and Power Amps...
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Page 2: Phonitor, The New Heart Of Music Playback: Phonitor
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. -
Page 3: Table Of Contents
Content Symbols and Notes, Scope of Delivery Important Security Advices Hook Up Introduction Phonitor, The New Heart Of Music Playback: Phonitor 2 Remote Control Home Listening, Sound Engineers, 120 Volt Technology Special Features, Applications Phonitoring: With And Without Magnifiers, The End Of Ear Fatigue 12 Tech Talk 120 Volt operating voltage and its effects Rear Panel: Power... -
Page 4: Symbols And Notes, Scope Of Delivery
The symbol of a lamp directs your attention to explanations of impor- tant functions or applications. Attention: Do not attempt any alterations to this device without the approval or supervision of SPL electronics GmbH. Doing so could void completely any and all of your warranty rights and claims to user support. -
Page 5: Important Security Advices
Such actions can lead to dangerous electrical shocks or fire! Opening the unit: Simply put: DON‘T, if you are not a certified SPL tech- nician or engineer.Really: Do not open the device housing, as there is great risk you will damage the device, or –... - Page 6 Important Security Advices Lightning: Before thunderstorms or other severe weather, disconnect the device from wall power; do not do this during a storm in order to avoid life threatening lightning strikes. Similarly, before any severe weather, disconnect all the power connections of other devices and antenna and phone/network cables which may be interconnected so that no lightning damage or overload results from such secondary connections.
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Page 7: Hook Up
Hook Up Be very careful to check that the rear chassis power selection is set correctly before using the unit (230 V position: 220-240 V/50 Hz, 115 V position: 110-120 V/60 Hz)! When in doubt about a source, contact your dealer or a professional electrician. Read page 15 for instructions on how to set the correct voltage. -
Page 8: Introduction
Introduction Phonitor When we brought out the first Phonitor — the first ever headphone amp with 120 Volt technology — back in 2008, the professional audio world seemed to have been eagerly awaiting it. The success of this unique headphone preamp was overwhelming. In hindsight, we also had to wonder how none of us had come to the idea of combining basic monitoring options, speaker simulation capabilities and a headphone preamp. -
Page 9: Remote Control
Introduction The Two Sides Of The 120 Volt Amp As always, the Phonitor 2 remains first and foremost a headphone pre- amp, which is easy to identify given the elaborated loudspeaker-like reproduction with headphones. Considering that the 120-volt amp provides everything needed to preamplify, manage and control the volume of line level signals, the latter are now also available at the output on the rear panel. -
Page 10: Home Listening, Sound Engineers, 120 Volt Technology
Introduction Home Listening Home users can enjoy a central control unit for modern music play- back of stereo signals that supports all known formats – and that with an unheard-of price/performance ratio. As such, the Phonitor 2 does justice to its central position. It is comforting to know that there is no need to fear a sound bottleneck limiting your system in such a critical spot in the chain. -
Page 11: Special Features, Applications
Introduction Special Features • The Reference – the Phonitor 2 sets new technical and sound standards. • For loudspeakers and headphones – two-channel 120 Volt amp for headphones and active loudspeakers or power amps • For all types of headphones – dynamic, balanced, electrostatic •... -
Page 12: Tech Talk
Tech Talk Phonitoring: With And Without Magnifiers Already for the headphone monitoring – or phonitoring – part alone, the Phonitor 2 encompasses advantages of both kinds of traditional monitoring methods: On one hand the analytical headphone moni- toring is like working with an acoustic magnifier but without external room influences;... - Page 13 – and in the productive power of electronics, voltage level functions similarly. For some years, now, SPL has addressed this issue in all of its master- ing product series through its own specifically developed 120 volt tech- nology.
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Page 14: Tech Talk
Comparison Maximum Levels mon components and circuits given that its values 33,2 are approximately 10dB higher. THD measurements of the SPL op-amp show a dif- ference of more than 3dB compared to the OPA134 22,5 21,5 at 36V — in terms of sound pressure level, that cor- responds to an improvement of more than 50%. -
Page 15: Rear Panel: Power
Rear Panel: Power Power Voltage Select Before connecting the Phonitor 2 to the mains, make sure that the vol- tage selection corresponds to the values of your local power grid (230 or 115 volts). The mains connector on the rear panel integrates a fuse box that in- cludes fuses for both voltage ranges. -
Page 16: Rear Panel: Wiring
Rear Panel: Wiring Wiring Phonitor 2... -
Page 17: Rear Panel: Signals & Remote Control
Rear Panel: Signals & Remote Control Signal Connections Inputs are always female and accept male connectors; outputs are always male. All in all, a very comprehensible principle. Turn off the unit before connecting or disconnecting any cable or equipment to it. Otherwise you risk the possibility of damaging your ears or equipment. -
Page 18: Bottom: Dip Switches
Bottom: DIP Switches Output level adjustment The DIP switches on the bottom of the unit give you the possibility to increase the output level in multiple steps. This is something that ought to be considered basically in two cases: when the input level is very low and when using high-impedance and especially power- hungry headphones. -
Page 19: Front Panel: Connection
Front Panel: Connection Headphone Connection Connect headphones to the standard 1/4" (TRS) stereo plug on the lower right front panel. The layout is: Tip =left channel, Ring = right Channel, Sleeve = ground. Make sure that the plug firmly seated for a solid connection. Recommendations Reduce volume level before you remove or plug in the headphone (or when switching headphones). -
Page 20: Control Elements
Control Elements Crossfeed The Crossfeed switch allows you to adjust the frequency-dependent crossfeed simulation of both channels by adjustments of interaural level difference – as if this characteristic would be heard from mon- itors when in their own room ambiance. One can compare variations in crossfeed values as approximating the influence of different room sizes and characteristics on a given loudspeaker setup. -
Page 21: Interaural Level And Time Differences As Related To Crossfeed
Control Elements Interaural Level and Time Differences as Related to Crossfeed Setup The following two diagrams show, respectively (on the left), the fre- quency response of interaural level differences and (on the right) the interaural time difference at maximum Crossfeed value and at an Angle of 30 degrees. -
Page 22: Interaural Level And Time Differences As Related To Angle
Control Elements Interaural Level and Time Differences as Related to Angle Setup The following two diagrams show (on the left) the frequency response of interaural level difference with respect to the interaural time differ- ence (on the right) at maximum Crossfeed value and an Angle of 75 degrees. -
Page 23: Crossfeed And Angle Parameters
Control Elements Crossfeed and Angle Parameters Angle Crossfeed Level Time Diff. Speaker Angle (Result) Switch Switch Difference (µs) The accen- tuated lines show at which Crossfeed values the Speaker Angle most precisely matches the theoretically determined time difference values. These, of course, are mainly a starting point to reproduce a real monitor- ing setup. -
Page 24: Source, Output, Crr/A, Off, All; Center
Control Elements Source The Phonitor 2 provides three different source connections. Use the Source switch to select one. All three switches are named after the in- puts on the rear. The RCA input is usually used to connect consumer products. Do note, however, that the XLR inputs can also be used to connect any unbalanced outputs. -
Page 25: Vu Meter, Vu Cal., Solo
If necessary you can lower the sensitivity by 6 dB so that the gauge goes up to +11 dB output level (see “VU Cal.“ below). The VU meter is custom made to meet SPL specifications and assures a balanced optical perception thanks to it’s optimized ballistics. The integration time of the display complies with BBC requirements, rise time up to 0 dB is approximately 300 ms. -
Page 26: Phase Ø, Stereo And Mono
Control Elements Phase ø The phase reversal control is another important monitoring func- tion. As with the solo function, you can choose between L, R and OFF. Choose the middle position, OFF, to hear the stereo signal. Switching to L reverses the left channel phase (thus inverts by 180°). The same effect occurs in the right channel when switching to R. -
Page 27: Laterality, Volume
Control Elements Laterality In acoustics, laterality refers to the deviation of sound perception to either of our ears. With the Laterality control you can compensate perceived vo- lume differences between channels that may be due to hearing loss. This control has a narrower range than conventional balance controls. -
Page 28: Operation
Operation Adjust Headphone Reproduction To Loudspeaker Monitoring The Phonitor 2 offers foremost a complete set of options required for professional monitoring: Solo L/R, Phase Reverse L/R, Mono, Volume, VU Metering. In addition, new functions such as Crossfeed, Angle and Center Level transform the Phonitor 2 from a traditional headphone amplifier into a headphone monitoring amplifier, with which it is possible to achieve reproduction equivalent to studio monitors, if essential factors of... - Page 29 Operation Alternatively you can keep the Crossfeed adjustment identical (thus keeping the interaural level difference), but for example in- crease the Speaker Angle. This way the interaural time difference is increased, which in turn has the effect of a broader image. The interaural level difference is only slightly altered.
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Page 30: Specifications
Specifications Inputs XLR connectors, electronically balanced Impedance: bal. ca. 20 kohms, unbal. ca. 10 kohms Max. Input Level: +32,5 dBu Outputs Monitor/Line Outputs: XLR connectors, electronically balanced Frequency Range: 4 Hz to 480 kHz ( -3 dB) CMR: -82 dBu At 1 kHz, 0dBu input level and unity gain Crosstalk at 1 kHz: -106 dB... -
Page 31: Measurements
Measurements Frequency Response Input/Headphone Output, Left and Right Channel Measuring output input 600 ohms, Volume control Phonitor 2 0 dB: ‹10 Hz to ›200 kHz (-0.2dB; ‹10 Hz to ›480 kHz @-3dB). The large frequency response range excludes that the frequency spec- trum is limited at any point. - Page 32 Measurements THD vs. Output Level (W) Measuring output and input 600 ohms, Volume control at 0 dB. This measurement represents an analysis of THD values over the complete output level range. High THD values can be perceived as rough sounds and overemphasized highs.
- Page 34 Manual Phonitor 2 Model 1280...
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