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Legacy V System, Руководство по эксплуатации для владельца

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Wavelet Preamplifier/DAC/Crossover/Room Correction Processor 

Inputs 

Analog 

 

Two pairs of Stereo balanced inputs on XLR connectors.  
Input sensitivity without attenuation 0 dBFS

*1

 = 1 dBV

*2

, input impedance 20 kOhm. 

Analog attenuation available in three steps of -3 dB, -6 dB and -12 dB for an input sensitivity of respectively 0 dBFS = 4 dBV, 7 dBV or 12dBV. 

 

Two pairs of Stereo unbalanced inputs on RCA connectors.  
Input sensitivity without attenuation 0 dBFS

*1

 = 1 dBV

*2

, input impedance 100 kOhm.  

Analog attenuation available in three steps of -3 dB, -6 dB and -12 dB for an input sensitivity of respectively 0 dBFS = 4 dBV, 7 dBV or 12dBV. 

 

One XLR Measurement microphone input, 48 Vdc Phantom power. 

 

Digital 

 

Asynchronous USB audio, 24 bit, 44.1 – 96 ks. 

 

SPDIF, 24 bit, 44.1-192ks 

 

TosLink, 24 bit, 44.1-96ks 

 

Содержание V System

Страница 1: ...1 Owner s Operating Manual ...

Страница 2: ...radiation control technologies The Legacy speaker system is designed assembled and tested in Springfield Illinois by a dedicated group of engineers craftsmen and music lovers The custom processor is designed and fabricated in Lund Sweden under the direction of Bohmer Audio Please take a few moments to learn more about the features and controls of these instruments to assure full enjoyment ...

Страница 3: ...unit You can record this number in the space provided below Refer to this when calling your dealer regarding this product Model V Speaker System Serial No ____________________ Date of Purchase ________________ Share your Legacy speakers with the Legacy community Post your Legacy experience and system photos at Facebook com LegacyAudio Like the page to continue receiving the latest Legacy announcem...

Страница 4: ...l cross bracing C There are screws located on each end of the brace Step 3 Next remove the front panel A and braces D H Step 4 Then remove the two side panels F G Step 5 Finally remove the remaining back panel E leaving the speaker resting on the base I Due to the substantial weight of the loudspeakers we suggest that at least two persons assist in removing each speaker from the base Step 6 Remove...

Страница 5: ...5 ...

Страница 6: ... and a mic calibration plot At the opposite end of the carton you will find a power supply with a five pin locking connector and its 115 V AC cable a compact remote volume control a Wi Pi network connector and a SanDisk USB memory stick Also included is a micro USB cable to connect your computer or media server to the Wavelet ...

Страница 7: ...d enclosure Subwoofer 12 Alumium very low frequency radiator driving three 10 mass loaded pneumatic radiators Low Frequency Alignment Compound B6 B2 handing up to dipole Frequency Response Hz 2dB 16Hz 30kHz Impendance 4 Ohm upper range Sensitivity 98 dB 2 83Volts 1m in room Recommended Amplification Sub and bass sections are powered with 1500 Watts of internal power two external channels of 30 Wat...

Страница 8: ...ncern of digital artifacts An apodizing circuit corrects for the pre ringing native to CODECs Wavelet has adequate headroom to handle these higher level signals while functioning as a crossover and compensating for room resonances Wavelet processes at 56 bits of depth in a domain more than one trillion times finer in resolution than that of a 16 bit CD The Wavelet is by design upgradable The unit ...

Страница 9: ...and has nothing to do with the Wavelet in particular As professional studios rely on PCM based equipment such as Pro Tools to mix pan and balance recordings the vast majority of SACDs are in fact mixed in PCM or mixed analog and recorded in PCM They may then be converted to DSD for SACD mastering stages The PCM format is far more efficient where DSP is in use Recently a newer studio format DSD wid...

Страница 10: ...nput sensitivity of respectively 0 dBFS 4 dBV 7 dBV or 12dBV Two pairs of Stereo unbalanced inputs on RCA connectors Input sensitivity without attenuation 0 dBFS 1 1 dBV 2 input impedance 100 kOhm Analog attenuation available in three steps of 3 dB 6 dB and 12 dB for an input sensitivity of respectively 0 dBFS 4 dBV 7 dBV or 12dBV One XLR Measurement microphone input 48 Vdc Phantom power Digital A...

Страница 11: ...nt that optimizes the loudspeaker room acoustic transfer function in both frequency and predominantly time domain Working with revolutionary new algorithms is starts with a psychoacoustically based measurement method Alignment errors are then optimized individually not resorting to the common crude bulk correction over the entire frequency spectra The Algorithms use psycho acoustic reasoning for a...

Страница 12: ...be provided by special order Two professional grade 15 ft balanced XLR cables are provided for each speaker Wavelet processor output connections 1 Left speaker subwoofer amplifier internal 1000 watts 2 Left speaker bass internal 500 watts 3 Left lower midrange amplifier user provided 4 Left midrange treble amplifier user provided 5 Right speaker subwoofer amplifier internal 1000 watts 6 Right spea...

Страница 13: ...13 Ready to take control of your V system ...

Страница 14: ...nnect the unit to the internet To maximize enjoyment we recommend dedicating one of these handheld devices to your music system thus keeping your phone calls and messages from interfering directly with your listening and control experience If you don t have an extra device consider picking one up used We love controlling the system with an iPad Mini sized screen You can also utilize a low cost add...

Страница 15: ...15 ...

Страница 16: ...etween the quotes as shown and then save over the wifi conf txt file that exists on the removable SanDisk memory stick When you insert the stick into the Wavelet USB port with the power off standby the unit will load into memory the new network name and password after being powered on for 1 minute ...

Страница 17: ...17 Input ...

Страница 18: ...18 Settings Mode ...

Страница 19: ...19 DAC Presets ...

Страница 20: ...20 Contour Channel Levels ...

Страница 21: ...21 System Update Room Correction pg 1 ...

Страница 22: ...22 Room Correction pg 2 Room Correction Help Screen ...

Страница 23: ...m Keep in mind the wavelength at 20 Hz is 1000 times greater than at 20kHz When a wavelength is greater than room dimensions reflections have little phase shift and rooms can reinforce pressurize deepest bass frequencies in a beneficial way Without this help most speakers would be practically inaudible in the first octave However as loudspeakers radiate at slightly higher frequencies the reflectio...

Страница 24: ...kers with small bass drivers By 500 Hz most speakers are radiating about 180 degrees increasing midrange flutter by adding early reflections The red line indicates ideal uniform directivity for a very desirable 60 degree horizontal radiation pattern The black line is typical of a three way speaker design The Legacy V system blue line employs acoustic directivity control and DSP to reduce lateral r...

Страница 25: ...ers do not radiate uniformly with frequency This lack of directivity control greatly skews the room power balance reduces clarity and drives room resonant modes heavily Note that even in this broad listening setup with two side chairs and a sofa a radiation angle greater than 60 degrees for each of the loudspeakers is simply not required What we will demonstrate next is why wider coverage is actua...

Страница 26: ...ues for the localization of this sound If the speaker system projects sound onto the room boundaries creating a diffuse field before it can reach the listener directly these fragile ITD and ILD cues will be altered and scrambled The key to imaging is preserving the interaural time and level differences The shadowing to the far ear from the source is quite fragile in a reflective environment Mainta...

Страница 27: ...able energy from each speaker is reflected back into the room within a few thousandths of a second This reflected energy is out of sync with the original signal A few milliseconds later the first wave front is about to reach the listener while the reflected energy is close behind These early reflections alter the original tonal balance As they occur within the fusion time window the brain cannot s...

Страница 28: ...liseconds later the initial direct wave front has now reflected off the rear wall and has made its way back to the listener The listener will perceive this reflection as additional bass energy though a standing wave has not had time to develop It is a common misconception that such low frequency excess energy is merely the result of inevitable resonances within the room when a large portion can be...

Страница 29: ...on axis in the presence of room boundaries The smoothed curve is the result of applying conventional room correction methods Below left is the impact of the correction on the Fequency Time domain Below right is the same wavelet plot with the Bohmer correction method ...

Страница 30: ...ayback Bauer Smythe Some have argued that we need to eliminate the crosstalk from each loudspeaker to the far ear even to the point of building a dividing wall that meets the face separating the two ears Glasgal This would imply a purely binaural recording process as a standard which is certainly not the norm Others have suggested an electronic crosstalk cancellation signal Polk Carver and even a ...

Страница 31: ...s depth richness envelopment without affecting factors which influence placement It is the lateral sound energy which creates pressure differences between the two ears of a front facing listener at frequencies below 700Hz The easiest way to measure or think about lateral sound is in terms of the lateral or Y axis sound velocity which one can measure with a sideways facing figure of eight microphon...

Страница 32: ...y providing broadband uniform directivity loudspeaker designs Dudleston thus improving localization Likewise correlated spatial information in the recording is more audible because of reduced masking effects of early room reverberation and an increase of ambient information beyond 14ms Low frequency resonances can be greatly reduced without introducing error in the time domain Bohmer Dudleston wit...

Страница 33: ...r in your room and how much of the total sound is diffuse reflection More than 30 years of psychoacoustics research is weighted in the result In summary we have successfully attacked these four nemeses of the stereo experience The V system with Wavelet reconstructs the low frequency separation occurring within the first 14ms The V system s directivity pattern prevents early reflections from maskin...

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