1. SetupDSD2.0.4.zip Driver
2. readme.txt File Contents

readme.txt Driver File Contents (SetupDSD2.0.4.zip)

DISTRIBUTED SYSTEM DESIGN (DSD) v2.0.4 for WINDOWS,  April 2006

JBL PROFESSIONAL
8400 Balboa Blvd.
Northridge, CA  91329
Tel: (818) 894-8850
URL: http://www.jblpro.com


PROGRAM SUMMARY
===============
DISTRIBUTED SYSTEM DESIGN is a software utility that calculates
and displays speaker spacing and positioning for a rectangular room.
For systems using in-ceiling subwoofers, it computes the number of 
in-ceiling subwoofers to use.

Several acoustical calculations are made and the resulting document
can be saved and printed.



INSTRUCTIONS FOR INSTALLING
===========================
Whereas previous versions of DSD did not require a Windows install process, 
starting with Version 2.0, DSD now must now be installed from the included
installation files.

To install, run SETUP.EXE from from the downloaded zip folder, installation 
Diskette, or CD.
  1. Click next > on the setup welcome screen.
  2. Verify the installation folder is correct and click next >.
  3. Click Next > on the Confirm installation screen.
  4. Click Close on the installation complete screen.
  
The installation process will install a Distributed System Design icon on 
your desktop.  To use the program, simply run Distributed System Design 
shortcut on the desktop or the Distributed System Design shortcut under 
Start -> Programs -> Distributed System Design



INSTRUCTIONS FOR USING PROGRAM
==============================
1) Click Distributed System Design, and then New Design.

2) Fill in the name of your project.

3) Fill in the date.

4) Fill in the room dimensions: length, width & ceiling height (or the speaker
mounting height).  For this program, the length must be bigger than the width.

  For Complex Rooms --  If the room floorplan is not rectangular, model one 
  section as if it were rectangular.  As long as the ceiling height is the same
  throughout, you can use the resulting distance between speakers for the entire 
  room. If the room contains multiple ceiling heights, model each ceiling height 
  separately.  
  
5) Click on the Ceiling Speaker Model arrow. A selection of JBL loudspeakers will open.
Most are ceiling speakers.  Some are surface-mount speakers, for open-architecture ceilings.
Choose one of the loudspeakers you are considering using and whether that speaker 
will be utilized low impedance (8 or 16 ohms) or using a 70V/100V tap.  You will be able to 
change your selection later, which is a good way of narrowing down which speaker
will work best for this project.

6) Choose whether to lay out the speakers in square (every row lines up with every 
other row) or in hexagonal (rows are offset from each other).  

For more information about layout options, check JBL's "Ceiling Speaker Application Guide"
at: http://www.jblpro.com/pub/technote/csapp.pdf, or JBL's "Designing Better Sounding
In-Ceiling Business Music Systems" at http://www.jblpro.com/pages/Real%20Coverage.pdf.

7) Choose the Layout Density -- i.e, how close together or far apart to place the speakers.  
The closer together the speakers are, the less variation there will be from place to place 
and the better the intelligibility will be.  The denser the layout, the better it will 
sound overall.  Recommended starting density is "Minimum Overlap", which has the best 
trade-off between price and performance.  Use Maximum Overlap when intelligibility is 
critical or when evennes of spacing is paramount.  Use Edge-to-Edge for economy installations.
Avoid the "1.4 x Edge-to-Edge" and "2.0 x Edge-to-Edge", which typically exhibit too much 
variation from place-to-place and will not sound very good in most applications.  

8) Click OK.

9) Page 2 shows how many speakers to use, where to place them and how the system 
will perform.   

  Here are some explanations and guidelines:

  > SPL (Sound Pressure Level) -- The most important line is the one entitled
  "Maximum Continuous Average SPL (music/speech)", which is bolded.  It reveals
  how loud this speaker layout will be able to get to on a continual basis, when 
  pushed hard, with real music and/or speech.

  > Target SPL -- If speech intelligibility (paging) is important, set the
  target SPL 10 dB to 15 dB above the loudest typical ambient sound level for 
  that room.   If there will not be paging, then select the target SPL according
  to the function of the music.  

     70 dB (with 80 dB peaks) = Light Background Music
     80 dB (with 90 dB peaks) = Foreground Music
     85 dB = A Reference Point:  How loud dialog is in a movie theater.
     90 dB (with 100 dB peaks) = Sports Bar / Low Nightclub Level
    100 dB ( with 110 dB peaks) = Medium Nightclub Level

  > Expected Level Variation.  Some areas of the room will not get to the SPL
  sound level indicated. The less variation the better.  2 dB variation is excellent.  
  4.5 dB acceptable. More variation than that is typically annoying to the patrons.

10) You can print the page by clicking "Print".

11) You can save the design by clicking "Save" and naming the file and location.  You 
can open this file later.

12) You can revise the design by clicking on the "Revise Design" button to explore 
"what if" scenarios.  You can try changing the speaker, changing the tap, or 
changing the density, to find the optimum speaker selection and layout for the
application.  

  Hint: If you want to increase SPL, then changing to a higher sensitivity 
  speaker or changing to a higher tap setting increases SPL quicker than does
  increasing the density.  Increasing the density can substantially improve
  general sound quality and lowers variation from place-to-place, but it does
  not increase SPL very much.  

13) To start a new design with blank boxes, close the DSD program and re-open it.  

14) Preferences -- If you want to change the units (between Metric and English) or the 
listener height (for example, 3 feet might be more appropriate when all patrons are seated), 
click on "Distributed System Design" and then "Preferences".  You might need to change the 
numbers in the entry boxes, if they have numbers in them.   

15) Subwoofer Utility -- This utility determines how many Control 19CS/CST subwoofers to use.
It is set up only for use with Control 24 Micros, Control 24s or Control 26s.  After 
completing the design using these main speakers, you can use the subwoofer utility by clicking 
"Distributed System Design" and then "Subwoofer Utility".  The program asks you questions about 
which speaker model you're using, where the speakers are tapped, how close to boundaries the
subwoofers will be, and some acoustics of the room.  Round up from the computation to determine 
how many Control 19CS/CST subwoofers to use.

  > The computed quantity of subwoofers applies either to Control 19CS subwoofers for
  low-impedance (8 ohm) operation or to Control 19CST subwoofers tapped at 60W for 70V
  or 100V distributed speaker systems.  It also assumes the use of an electronic
  crossover (ie, that there will not be overlap between the subwoofer and the 
  main speakers). 

  > For tapping at 30W, double the number of subwoofers. The answer is rounded to 
  tenths to let system designers determine for themselves whether to round up or 
  round down.  The utility does not allow less than 1/12th the number of ceiling 
  speakers in the room.

  > Coverage -- This subwoofer utility chooses the quantity of subwoofers based on how 
  many subwoofers are required to the proper Sound level match.   It does NOT look at 
  coverage.   For coverage purposes in a distributed subwoofer ceiling system, it is 
  valid to consider every as covering 120 degrees (which for layout purposes is in-between 
  the coverage spacings of Control 24C [which is 130 degrees] and Control 26C [which is 
  110 degrees]).


For a more complete discussion of principles for designing ceiling speaker systems, check
the list of references below, or download JBL's "Ceiling Speaker Application Guide"
at: http://www.jblpro.com/pub/technote/csapp.pdf, or JBL's "Designing Better Sounding
In-Ceiling Business Music Systems" at http://www.jblpro.com/pages/Real%20Coverage.pdf.

  


DSD VERSION HISTORY
==========================
v2.0
  *  Redesigned using the .Net application framework,to relieve intermittant 
     operation some users were experiencing caused by changes within Windows.

v1.3.5
  *  The Control 321C/CT, 322C/CT & 328C/CT models were added.

v1.3.4
  *  The Control 24CT Micro Plus and Control 26-DT models were added.

v1.3.3
  *  The Control 19 Subwoofer Utility was added.

v1.3.2
  *  The Control 24 Micro models were added.

v1.3.1
  *  The Control 23, 25 and 28 models were added to address interest in 
     using these surface-mount speakers pointed downward in open-architecture
     ceiling applications.
  *  The Preferences section was added to address requests for using in Metric
     units and for changing the listener height.



FOLDER CONTENTS
=================
The folder contains the following files:

  *   Setup Program  - Setup.exe.
  *   Setup Variables - Setup.ini
  *   Setup Install package - SetupDSD.msi
  *   Readme.txt - this file



SELECTIONS
==========

SPEAKER SELECTIONS

  Control 24C Micro, 4.5" 2-way -- 8 ohms direct
  Control 24CT Micro -- 8W tap (100V or 70V)
  Control 24CT Micro -- 4W tap (100V or 70V)
  Control 24CT Micro -- 2W tap (100V or 70V)
  Control 24CT Micro -- 1W tap (100V or 70V)
  Control 24CT Micro -- 0.5W tap (70V only)

  Control 24CT Micro Plus, 4.5" 2-way -- 25W tap
  Control 24CT Micro Plus -- 12.5W tap (100V or 70V)
  Control 24CT Micro Plus -- 6.2W tap (100V or 70V)
  Control 24CT Micro Plus -- 3.1W tap (100V or 70V)
  Control 24CT Micro Plus -- 1.5W tap (70V only)

  Control 24C, 4" 2-way -- 16 ohms direct
  Control 24CT -- 30W transformer tap (100V or 70V)
  Control 24CT -- 15W transformer tap (100V or 70V)
  Control 24CT -- 7.5W transformer tap (100V or 70V)
  Control 24CT -- 3.7W transformer tap (70V only)

  Control 26C, 6.5" 2-way -- 16 ohms direct
  Control 26CT -- 60W transformer tap (100V or 70V)
  Control 26CT -- 30W transformer tap (100V or 70V)
  Control 26CT -- 15W transformer tap (100V or 70V)
  Control 26CT -- 7.5W transformer tap (70V only)

  Control 26DT, 6.5" 2-way -- 60W tap
  Control 26DT -- 30W tap (100V or 70V)
  Control 26DT -- 15W tap (100V or 70V)
  Control 26DT -- 7.5W tap (70V only)

  Control 23, 3.5" 2-way -- 8 ohms direct
  Control 23T -- 5W tap (70V only)
  Control 23T -- 10W tap (100V only)

  Control 25, 5.25" 2-way -- 8 ohms direct
  Control 25T -- 30W tap (100V or 70V)
  Control 25T -- 15W tap (100V or 70V)
  Control 25T -- 7.5W tap (100V or 70V)
  Control 25T -- 3.7W tap (70V only)

  Control 25AV, 5.25" 2-way -- 8 ohms direct
  Control 25AV -- 60W tap (100V or 70V)
  Control 25AV -- 30W tap (100V or 70V)
  Control 25AV -- 15W tap (100V or 70V)
  Control 25AV -- 7.5W tap (70V only)

  Control 28, 8" 2-way -- 8 ohms direct
  Control 28T-60 -- 60W tap (100V or 70V)
  Control 28T-60 -- 30W tap (100V or 70V)
  Control 28T-60 -- 15W tap (100V or 70V)
  Control 28T-60 -- 7.5W tap (70V only)

  Control 321C, 12" coax -- 8 ohms direct
  Control 321CT -- 60W tap (100V or 70V)
  Control 321CT -- 30W tap (100V or 70V)
  Control 321CT -- 15W tap (100V or 70V)
  Control 321CT -- 7.5W tap (70V only)

  Control 322C, 12" coax -- 8 ohms direct
  Control 322CT -- 100W tap (100V or 70V)
  Control 322CT -- 50W tap (100V or 70V)
  Control 322CT -- 25W tap (100V or 70V)
  Control 322CT -- 12.5W tap (70V only)

  Control 328C, 8" coax -- 8 ohms direct
  Control 328CT -- 60W tap (100V or 70V)
  Control 328CT -- 30W tap (100V or 70V)
  Control 328CT -- 15W tap (100V or 70V)
  Control 328CT -- 7.5W tap (70V only)

LISTENER HEIGHT -- The default distance is 4 feet (English) and 1.22 meters (metric).

LAYOUT TYPE and COVERAGE PATTERN SPACING

  Square
  Hexagonal

  Coverage Spacing choices include:

  Maximum Overlap
  Minimum Overlap
  Edge-to-edge
  1.4 X edge-to-edge
  2 X edge-to-edge

  These coverage patterns refer to the overlap of the isobar corresponding to the
  -6 dB contour of the loudspeaker.



ACOUSTICAL CALCULATIONS
=======================

Maximum Continuous Average SPL (Pink Noise, dB)
				     =	speaker sensitivity (1W/1m)
				   	+ input power gain
				   	- inverse square loss
				   	+  additional SPL from Coverage Pattern.

Maximum Continuous Peak SPL (Pink Noise, dB)
				     =	Maximum Continuous Average SPL + 6.

Maximum Continuous Average SPL (music/speech, dB)
				     =	Maximum Continuous Peak SPL - 10.

Recommended Amplifier Power
		=  120% of sum of taps (transformer versions)

	     or =  sum of speaker power handling (using the transformer taps) to
		   2X sum of speaker power handling (non-transformer versions)

REFERENCES
==========
For a more thorough description of the principles of ceiling speaker system design, 
check the following sources:

Sound System Engineering
Davis and Davis
Howard W. Sams & Co. (1987)

Electroacoustical Reference Data
Eargle
Van Nostrand Reinhold (1994)

Handbook for Sound Engineers, The New Audio Cyclopedia
Ballou, ed.
Howard W. Sams & Co. (1987)



SPECIAL THANKS
==============
JBL Professional would like to thank Pat Brown and Joe Etrick for their input and 
suggestions during the original writing of this program.  We would also like to thank 
John Eargle of JME Consulting for engineering parameters and confirmation of validity 
of the predictions and Mike Paganini of JBL Professional for implementing this program.


UPDATES
====================
For future updates, check the JBL Professional Web Site (http://www.jblpro.com) on the 
Software Downloads page.