Conrad-Johnson PV10A Скачать руководство пользователя страница 9 | Manualshive

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Conrad-Johnson PV10A Скачать руководство пользователя страница 9

G

etting The Most From Your PV10A

In a system of commensurate high quality components, the conrad-
johnson PV10A offers a remarkable level of sophistication and refine-
ment in music reproduction. To get the best performance out of any
audio system, there are a number of important details which must be
attended to.

Absolute Phase

Musical notes are heard through the ear’s response to waves of alter-
nating rise and fall of air pressure. Musical transients are almost exclu-
sively positive: that is, the initial effect is a rise in pressure. The ear is
capable of distinguishing these positive transients from the musically
unnatural alternative of a negative transient (an initial fall in air pres-
sure). In terms of your stereo system, these transients are created by
your loudspeakers. If the speakers respond to musical transients by first
moving out, they are creating a rise in pressure, and the system is said
to be phase correct. If they respond by moving in, they create a fall in
pressure and the system is said to be phase inverting. Each component
in the stereo system either preserves the phase of the incoming signal,
and is said to be phase correct, or inverts the phase and is said to be
phase inverting. It is unimportant whether an individual component is
phase correct or phase inverting, as long as the system as a whole is
phase correct. This will be the case if the number of phase inversions is
even (or zero).

The line stage of the PV10A is phase inverting. If your system has an
odd number of inversions, (for example, if the PV10A is the only phase
inverting unit in the chain) then you must add one phase inversion. This
is conveniently done by reversing the positive and negative connections
to your speakers (be sure to reverse both channels).

If you are not sure about the phase of every piece in your system, you
can establish correct absolute phase by careful listening. When the
system is in correct phase, transients will be noticeably cleaner and
more sharply defined. The effect is especially apparent on plucked
string sounds. A final warning - not all recordings are phase correct
(including some "audiophile" recordings), so listen to several before
concluding your investigation of absolute phase.

PV10A Owner’s Manual

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Содержание PV10A

Страница 1: ...on for producing among the industry s most reliable compo nents is a natural consequence of this engineering approach Although the PV10A has been designed to operate in an intuitively apparent way you will find useful information on it s installation and operation in this manual Please take a few minutes to read the manual to better understand the features and capabilities of your PV10A Note that ...

Страница 2: ... exclusion may not apply to you Obtaining Warranty Service To obtain warranty service the unit must be shipped along with evidence of purchase in factory packing to conrad johnson design or designated service center with freight and insurance prepaid by the owner After repair the unit will be returned with freight and insurance prepaid by conrad johnson design to any destination in the United Stat...

Страница 3: ...address above Boxes and packing materials can be ob tained from our service department for a nominal charge if you no longer have yours Include with the unit a note describing the problem you are having in as much detail as possible It is especially important for our technician to know if the problem is intermittent If you want an estimate of cost for out of warranty service be sure to request it ...

Страница 4: ...ice and power supply design have all been specified with a view to reducing the impact of electromagnetic fields on the performance of this unit At the same time however our primary goal is the accurate reproduction of recorded music in the normal home environment and we have elected not to compromise this objective by the application of heavy handed RFI filters or by using grounding practices tha...

Страница 5: ...ompute the required additional resistance RA RA 47000 x RD 47000 RD Some moving magnet cartridges require higher capacitance for opti mum performance Increasing the input capacitance may be achieved by soldering a suitable value capacitor across the phono input jack Use polystyrene capacitors for this purpose TUNER CD VIDEO AUX2 TAPE IN These are high level inputs and are electrically equivalent T...

Страница 6: ...m your processor to the TAPE IN input and the input of your processor to the TAPE OUT output on the PV10A The TAPE MON position of the SOURCE TAPE MON button will insert the processor into the circuit the SOURCE position will provide flat unprocessed response PV10A Owner s Manual 6 ...

Страница 7: ...ng AUX1 PHONO TUNER CD VIDEO and AUX2 inputs The selected source will be available at the source position of the tape monitor switch and at the TAPE OUT output connection SOURCE TAPE MONITOR Tape monitoring is accomplished via a pushbutton control The button labeled SOURCE TAPE MON lets you select your tape deck as an input source and is also used to compare the original program source with the pl...

Страница 8: ...he sonic performance of your PV10A The tubes in your preamplifier have been tempered by a controlled burn in procedure that permits them to perform for a greatly extended period without sonic degradation then selected for minimum residual noise Replacement tubes are prepared and selected in the same way Therefore we highly recommend that you purchase replacement tube sets from conrad johnson desig...

Страница 9: ...o be phase inverting Each component in the stereo system either preserves the phase of the incoming signal and is said to be phase correct or inverts the phase and is said to be phase inverting It is unimportant whether an individual component is phase correct or phase inverting as long as the system as a whole is phase correct This will be the case if the number of phase inversions is even or zer...

Страница 10: ...be system dependent those that are top ranked on one system may be a poor choice for a different system Consult your conrad johnson dealer for recommendations for your spe cific system Performance Tip Warm up the PV10A before listening The sonic performance improves noticeably as the unit warms up The midrange becomes more lucid the highs smoother and the soundstage expands The warm up period can ...

Страница 11: ...B below 10mv input Mechanical Dimensions 15 75 W x 3 75 H x 11 D Weight 12 lbs Fuse The power transformer of the PV10A is protected by a fuse on the ac power line mains A failure of this fuses is a symptom of a more serious problem and a competent service technician should be consulted The fuse is located on the printed circuit board near the transformer In no event should the fuse be replaced wit...

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