Page
10
blue sky
ProDesk™ SAT 5 Active Satellite & SUB 8 Active Subwoofer
Owners Manual for 2.1 (Stereo) Applications Issue 1, rev 3
7. Expanded Setup Guide
After completing the setup as specifi ed in the
Quick Setup
(Page 5), a
more accurate setup can be performed using a Sound Pressure Level
meter (SPL meter), 1/3 Octave Real Time Analyzer (RTA) and a pink noise
generator. This setup guide should be used for 2 Channel systems with
one or more subwoofers. If you need information regarding setting up a 5.1
channel system, please consult the manual that comes with the Blue Sky Bass
Management Controller.
1.
Confi rm that the satellite and subwoofer speakers have
been placed as recommended in the
Quick Setup
(page
5). Additionally, confi rm that the system has been wired as
recommended in the
Quick Setup
(page 5).
2.
Before starting the calibration process, turn the level down on the
satellite and the subwoofer speakers. High-level test signals can
damage the speakers, and more importantly your ears.
3.
Patch a pink noise generator, tape or other source with at least 60
seconds of 0dBu Pink Noise into your console. If you are using a
digital source, the test signal should measure -20dB FS (0dB FS =
Full Scale Digital).
4.
Turn on the pink noise source and confi rm that the console, or
digital workstation is generating -20dB FS / 0dBVU at the output
meters.
5.
Slowly bring up the gain of the left satellite speaker only. Bring up
the level until you measure 85dB on the C scale, with the response
set to Slow. SPL should be measured at the mix position, with
the SPL meter at arms length, with the microphone at seated ear
height, angled at approximately 45 degrees, and pointed at the
center point between the left and right speakers. If you are using
an RTA align the level of the speakers to 70dB reference line on the
analyzer.
6.
Repeat step 5 for the right speaker. (Make sure that you only align
one channel at a time, do not run signal through the left channel
while calibrating the right channel!)
7.
Now, that you have set the approximate level for the right and left
speakers, it is time to set the level for the subwoofer.
8.
If you are using an SPL meter proceed to step 10. If you are using a RTA
turn on the pink noise generator to the left or right channel. Confi rm
that the channel, without the subwoofer running, has a response,
which roughly aligns with the 70dB Ref Line. Now, bring up the level
of the subwoofer until its average response aligns with the 70dB
Reference Line. A note about subwoofer response: The response
of the subwoofer is strongly affected by the acoustics of the room.
Blue Sky satellite/subwoofer systems are designed to minimize the
effects of room acoustics and allow you the greatest chance of having
smooth full-range frequency response. Experimenting with subwoofer
placement can yield smoother frequency response.
9.
If you are using an SPL meter to calibrate your system,
disconnect
the signal going to the left and right satellite speakers. Turn on
the pink noise generator to
either
the left or right speaker. Now,
bring up the gain of the subwoofer until you are measuring 79dB
(C weighted - Slow). Because of the nature of pink noise, it is
important to measure for an extended period of time. You will
notice that the meter level will change continuously, so you may
need to do a mental average. After aligning the subwoofer
reconnect both satellite speakers.
10.
Now, it is time to listen... When listening to a properly
aligned Blue Sky satellite/subwoofer system, you will
notice extended low frequency response, wide dynamic
range, a deep sound stage and very smooth transition from
subwoofer to satellite speaker.
11. Congratulations!
You have now completed the set up of one of
the world’s fi nest monitoring systems. If you have any questions,
please do not hesitate to contact us directly with your questions.
(516) 249-1399 (9:00am to 5:30pm EST)
