Step 4: Begin calibration of levels. Que track 4 on the test
disc. Track 4 will generate pink noise, which should be
audible through only the CF speaker, this test tone
will play for 1:00 minute. As you begin to read an
SPL level for this speaker use the trim pot for the CF
channel to increase (turn clockwise) or decrease
(counter-clockwise) to make slow, fine adjustments
of SPL level until the target SPL is reached. In our
example you would adjust louder or quieter until an
SPL level of exactly 80dB is reached.
Step 5: Proceed to track 5 and perform the same calibration
procedures for the RF channel that you executed for
the CF speaker. You will need to adjust the remaining
speakers in your system to the exact same SPL level to
ensure proper soundstage performance. Track 6, 7, 8
and 9 will generate test tones for the RB/S, CB, LB/S
and LF speakers.
Note
: If you are utilizing a 7.1 speaker setup you will need to
calibrate the side channels and back channels separately.
Begin by disconnecting the cabling to the back speakers
and calibrate the side channels using track 6 for RS
and track 8 for LS. After the side channels have been
calibrated, disconnect the side channels and re-connect
the back channels and calibrate using track 6 for RB and
track 8 for LB.
Step 6: After calibration for each of the surround channels is
complete queue track 2. Take SPL readings as the track
progresses from channel to channel in a clockwise
pattern and ensure there is no more than 1dB of level
variance between any speakers in the surround system.
If you find any channels to be louder or quieter than
others make fine adjustments of the trim pots to
compensate for the difference in SPL levels.
If you are unable to adjust all channel output levels to reach
the target SPL point, there are additional steps you may try to
complete the calibration and setup of your FAP V1. If the
power amplifiers you are using provide level adjustments, you
can make fine adjustments to these gain or level adjustments
to match the output levels of your speakers. If your power
amplifiers do not have gain or level adjustments, you will
need to follow these steps:
1.Turn off the AC power to your FAP V1 and power amplifiers.
2.Using the supplied screwdriver adjust the trim pots on the top
panel for all channels excluding the subwoofer to absolute
maximum. (Full clockwise).
3.Turn on the power of your FAP V1 and power amplifiers.
4.Measure the output SPL levels of each channel using tracks
4 – 9, document these levels on a piece of notepaper.
5.Identify the channel exhibiting the least amount of output, this
should identify the speaker in your system that is quieter than
all others. The SPL level this channel measures will be the
new target SPL level.
6.Using the top panel trim pots on the FAP V1 and tracks 4 – 9
on the setup disc, decrease the level of the top panel trim pots
for each remaining channel until all channels are of equal
output.
If you still are unable to match the output levels of all
channels in your system it may be due to mismatched
speakers. Ideally all speakers in your surround system should
be identical. If this is not an option, voicing and impedance
matched speakers should allow you to obtain matched output
levels. Mismatched efficiencies and impedance loads will be
an issue if you plan to use assorted speakers, this can cause
output level differences that cannot be compensated for using
level adjustments on the FAP V1 or power amplifiers.
Step 7: Re-connect your subwoofer to the Sub (RCA) output
on the rear panel of the FAP V1. Based on personal
preference adjust the level of the subwoofer output until
the desired level is reached. Use caution to prevent
damaging levels from being reached. Always begin with
the lowest level setting and slowly increase. To properly
calibrate the subwoofer channel it is recommended that
you play music tracks you are very familiar with. This
will ensure the output level of your subwoofer is ideal
for your listening needs.
Congratulations! Your system is now calibrated and you are
ready to enjoy your high performance multi-channel audio
system. Once this calibration process has been completed you
will only need to re-calibrate the system if a vacuum tube is
replaced or another piece of audio equipment in the system is
replaced or substituted for another. You will need to take
measurements regularly (once or twice a year) to ensure
optimum performance from your system.
Calibration
2266
Summary of Contents for FAP V1
Page 1: ...F FA AP P V V1 1 ...
Page 6: ...Timeline 6 6 ...
