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Phonitor 2

 

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. Ever since we call this new species a „Headphone Monitoring 
Amp,“ which inspired the product name itself: Phonitor. 

Interestingly enough, the Phonitor not only became best friends with 
thousand of professional users, it also won a lot of fans in the Hi-Fi 
market segment. But that was by no means a coincidence — ultimate-
ly, the Phonitor can be counted among the best headphone preamps 
in the world thanks to our unique 120-volt technology. With its excep-
tional technical specifications and a huge power margin, it can repro-
duce  any  musical  material  without  the  slightest  modification,  since 
signal processing is not limited and, thus, signals are not altered at all. 
Music sounds more natural and hearing fatigue is drastically reduced. 
Given all that, it was easy to understand the enthusiasm with which 
musicians, sound engineers and music lovers received the Phonitor  
worldwide.

The New Heart Of Music Playback: Phonitor 2

Many Phonitor users told us they wished they could also use the un-
matched signal quality that the Phonitor provides to feed their speak-
ers.  And  so  began  to  take  form  the  idea  of  making  its  successor  a 
full-fledged  stereo  preamp  that  could  become  the  heart  of  modern 
professional and home systems alike where headphones have a pre-
eminent importance. Moreover, we have achieved enormous advanc-
es with our 120-volt circuits, making the technical specifications of the 
Phonitor 2 a new standard in all respects: 141dB dynamic range, 107dB 
signal-to-noise  ratio  (A-weighted  in  both  cases),  -112/-114dB  THD 
(headphone/speaker output with +30dBu output level). Mind you, the 
THD measurements define the limits of the measuring equipment but 
not those of the Phonitor 2.

Other  improvements  concern  specially  the  operation  of  virtually  all 
headphone types and impedances: the Phonitor 2 works seamlessly 
with low-impedance headphones with load impedances as low as 10 
Ohm (40  ohms  with balanced headphones). 

Содержание Phonitor 2 1280

Страница 1: ...Manual Phonitor2 120 Volt Amplifier for Headphones Active Speakers and Power Amps Models 1280 1281 Version 2 2 03 2016...

Страница 2: ...on by SPL Declaration of CE Conformity The construction of this unit is in compliance with the stan dards and regulations of the European Community Notes on Environmental Protection At the end of its...

Страница 3: ...ontrol 17 Signal Connections XLR Sockets 17 Connecting XLR to other socket formats 17 Learn Button Learn a remote control 17 Bottom DIP Switches 18 Output level adjustment Phonitor2 Insert Loop 18 Fro...

Страница 4: ...IMPORTANT OPERATIONAL ADVICE AND OR WARNINGS THAT MUST BE FOLLOWED BE ESPECIALLY ATTENTIVE TO THESE AND ALWAYS FOLLOW THE ADVICE THEY GIVE The symbol of a lamp directs your attention to explanations...

Страница 5: ...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 even after being dis...

Страница 6: ...al connections and immediately contact a qualified technician when you think repairs are needed or when moisture or foreign objects may accidentally have reached inside the housing or in cases when th...

Страница 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...

Страница 8: ...nals are not altered at all Music sounds more natural and hearing fatigue is drastically reduced Given all that it was easy to understand the enthusiasm with which musicians sound engineers and music...

Страница 9: ...with headphones and loudspeakers Obviously loudspeaker simulation makes no sense when using real loudspeak ers However owners of electrostatic headphones could connect their headphones to the output a...

Страница 10: ...ence quality Monitor Controller the Phonitor2 together with a carefully matched pair of headphones offers profes sional users an excellent monitoring alternative to their main speak ers The audio qual...

Страница 11: ...right left volume differences Switchable level adjustment consumer to professional level 1 1 6dB 12 dB Applications Stereo preamplification and headphone amplification for three sources High quality...

Страница 12: ...to impossible headphone mixing environment An essential reason for such unnatural ambiance is the complete separation of the channels which does not exist either in natural hearing or in stereo loudsp...

Страница 13: ...ions once again They have Signal To Noise Ratio of 116dB and offer a nearly 34dB headroom that yields an unequalled 150dB dynamic range The musical result is not to be mistaken Regardless of the monit...

Страница 14: ...and 10dB correspond to twice the per ceived loudness When it comes to volume the 120 volt technolo gy exhibits a performance in regard to maximum level and dynamic range that is twice that of com mon...

Страница 15: ...the included power cord to the rear 3 pin power input The transformer power cord and inlet of the appliance conform to VDE UL and CSA requirements On Off Switch Use the rear on off switch to activate...

Страница 16: ...P max 35 W Fuses Voltage Selection 115V AC T 1 A L 250 V 230V AC T 500 mA L 250 V 1 Remove Fuse Holder 2 Flip Over 3 Reinstall 1 ON Output 12dB 2 ON Output 22dB 3 ON RCA 10dBV to 4dBu 4 ON Sources 1 1...

Страница 17: ...om audio dealers With the diagram above the dealer can ensure to provide the appropriate cable for your application Learn Button Learn a remote control The volume potentiometer of the Phonitor2 is mot...

Страница 18: ...ill be summed see 4 1 Increase of 12dB for all outputs Switch 1 set to ON 2 Increase of 22dB for all outputs Switch 2 set to ON 3 RCA input level conversion to professional level 10dBV to 0dBu Switch...

Страница 19: ...cludes louder clicks and pops reaching the ear In addition this can avoid unpleasant surprise that follows when a headphone s lower impedance suddenly reproduces an otherwise acceptable Phonitor2 volu...

Страница 20: ...for frequency dependent simulation of your stereo image width by adjustments of interaural time difference This influences the moment in time at which a signal s wave form arrives at the ear and corr...

Страница 21: ...l level difference and on the right the interaural time difference at minimal Crossfeed value and an Angle of 30 degrees The black curves stand for the side of the direct sound wave front while the gr...

Страница 22: ...on the right at a maximum Crossfeed value and an Angle of 15 degrees The black curves stand for the side of the direct sound wave front while the gray curves stand for the opposite side The larger th...

Страница 23: ...precisely matches the theoretically determined time difference values These of course are mainly a starting point to reproduce a real monitor ing setup Formulae for calculations from http www sengpie...

Страница 24: ...you con sider that the Phonitor2 is not an effects machine Instead reevalu ate your aural impression by thinking about this normal headphone monitoring confronts you with a 180 degree sound stage the...

Страница 25: ...he VU display If you choose the 6dB position the range of the display is extended by 6dB With the 6dB switch activated and the needle at 0dB a value of 6dB input level is displayed Solo You can engage...

Страница 26: ...on the channel you wish to test as such reverb processing will tend to be re tained and invalidate the results However even more important for precision testing of the center sig nal can be to discer...

Страница 27: ...ft channel increases 3dB The maximum difference amounts to 6dB which is more than enough to compensate for significant differences 6dB equates to doubling the sound pressure level to achieve a doublin...

Страница 28: ...me of speakers and headphones 2 Note that you should be able to switch quickly and smoothly be tween speaker and headphones when making comparison tests It is also important that you can switch off th...

Страница 29: ...points and divide the distance by 2 We call this result A Now measure the distance between the loudspeaker centers and the location of your ears at the listening position This result we call B The ang...

Страница 30: ...ance 0 18 ohms Attenuation Factor 180 40ohms Frequency Range 10Hz to 480kHz 3dB CMR 82dBu At 1kHz 0dBu input level and unity gain Crosstalk at 1kHz 106dB THD N at 1kHz 0 00091 At 0dBu input level and...

Страница 31: ...m is limited at any point Formants and octaves of an instrument s sounds cannot be narrowed Phase Response Input vs Output Left and Right Channel Measuring output and input 600ohms Volume control Phon...

Страница 32: ...ons this ensures listening without ear fatigue THD vs Output Level W Measuring output and input 600ohms Volume control at 0dB This measurement represents an analysis of THD values over the complete ou...

Страница 33: ...Copy Master Recall Sheet Studio Listening Room Date Headphones Speakers...

Страница 34: ...Model 1280 Manual Phonitor2...

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