Phonic PCR2213 PLUS Manual Del Usuario página 16

25. Un-mute the HF, and turn up the level until the LF and HF is
about balanced.
26. Turn up HF, MF and LF level until the sound pressure level
reached 10dB below designed operating level. (If you set the
operating at 0dB, you shall reach 80dB.)
27. Press down the low cut if you're using vented LF speaker
which doesn't extend to 30Hz or lower.
28. Press down the Horn EQ if you're using HF horn which is
constant directivity design.
2. Refer to 5.5 for limiter adjustment.
30. Fine tune the system with the steps instructed by the test
instrument you are using. Please note the delay time can
also be fine tuned with precision instrument such as ETF or
TEF which include time domain measurement.
5.3 3-WAY SYSTEM LEVEL SETTING
Properly setting level guarantee best performing system. Please
follow the recommended procedure for best speaker system..
1. All system power off.
2. Connect the pink noise generator (on RTA or CD), the signal
source required by the test instrument and function generator
onto the main mixer.
3. Connect the measurement microphone to the instrument.
4. Make sure all the signal wiring is done properly setting on
PCR2213 Plus is done correctly.
5. Graphic equalizer at flat setting (or bypass).
6. Compressor/limiter at bypass setting.
7. All level control on power amplifiers at minimum.
8. Un-mute all output of PCR2213 Plus.
9. Turn on the system except power amplifiers.
10. Connect AC voltmeter at the LF output of the PCR2213 Plus
under test.
11. Make sure all mute switches and phase invert switches are
not pressed. The limiter is off, subsonic filter is off and the
horn EQ is not engaged.
12. Set the LF/MF crossover point [8] as design, send in the
sine wave from function generator at half of the crossover
frequency. Adjust the channel fader and master fader to 0VU
on the mixer.
13. Read the AC voltmeter, it should be around 0dBu depending
on the 0VU reference point of the mixer and the crossover
point.
14. Change the frequency of the function generator to the cross-
over point.
15. Adjust the LF/MF crossover frequency knob [8] slowly around
the crossover frequency. Read the AC voltmeter until it is
3dB lower than previous step. This is the exact position of
the crossover point. Mark the position with a pencil.
16. Connect the HF output to AC Voltmeter.
17. Set the MF/HF crossover point [8] as design, send in the
sine wave from function generator at 2X of the crossover
frequency. Adjust the channel fader and master fader to 0VU
on the mixer.
18. Read the AC voltmeter, it should be around 0dBu depending
on the 0VU reference point of the mixer.
1. Change the frequency of the function generator to the cross-
over point.
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20. Adjust the MF/HF crossover frequency knob [8] slowly around
the crossover frequency. Read the AC voltmeter until it is
3dB lower than previous step. This is the exact position of
the crossover point. Mark the position with a pencil.
21. Measure the axis distance between the MF speaker and high
HF driver (speaker), and calculate the approximate delay time
to compensate the difference. Ref to 5.3 for detail.
22. Now, shut down all signal sources. Make sure there is no out-
put from the mixer by reading the level meter on the mixer.
23. Press down all the mute switches of PCR2213 Plus excepts
the HF output(s).
24. Turn on only the HF power amplifier with input level at mini-
mum.
25. Send in the pink noise to the mixer, adjust the level until
reaching -10dB.
26. Slowly turn up the level control of the HF power amplifier,
make sure you are listening the HF sound clearly from the
HF speakers. If you heard fussy HF sound from the bass
or mid speakers (It is hard to tell MF coming from MF or
LF speakers), turn off the system and check system wiring
thoroughly. It is highly possibly that the LF or MF signal was
sent into HF speaker. If you turn on the LF first, HF speaker
will be blown already.
27. OK, now the HF is correctly sent into HF speaker(s). Un-mute
the MF output, and mute the HF output. Keep LF muted.
28. Turn on the MF power amplifier and slowly turn up the level
control, you should hear MF sound from the MF speakers.
2. Press down all the mute switches of PCR2213 Plus and
release the LF mute switch.
30. Turn on the LF power amplifier with input level at minimum.
31. Slowly turn up the level control of the LF power amplifier, you
should hear strong LF sound from the LF speakers.
32. Un-mute the HF and MF, and turn up the level until the LF,
MF and HF are about balanced.
33. Turn up HF, MF and LF levels until the sound pressure level
reached 10dB below designed operating level. (If you set
the operating at 0dB, you shall reach 80dB. If you set the
operating at 100dB, you shall reach 0dB, so on and so
forth... Our recommendation is 0VU at 0dB SPL for most of
the application.)
34. Press down the low cut if you're using vented LF speaker
which doesn't extend to 30Hz or lower.
35. Press down the Horn EQ if you're using HF horn which is
constant directivity design.
36. Refer to 5.5 for limiter adjustment.
37. Fine tune the system with the steps instructed by the test
instrument you are using. Please note the delay time can
also be fine tuned with precision instrument such as ETF or
TEF which include time domain measurement.
*(Delay adjustment based on the HF diaphragm is the farthest, and
MF is farther than LF. If this is not the case, and MF is the farthest,
refer the LF delay time from MF, and HF may need additional time
delay unit to compensate the offset.)
PCR2213