Driving the 4 ohm Load
by Pat Brown
Amplifier power ratings are good for window shopping and water cooler chats. If you need to drive a real-world 4 ohm Load, you need the matrix.
Long ago, 8 ohms was established as a practical impedance for
Entries by Pat Brown
Blast from the Past – The SynAudCon Slide Rule
Many have fond memories of the SynAudCon slide rule. This cardboard wonder could do many useful sound system calculations, and was once a main stay of our seminars. In the early 2000’s we replaced it with our Audio Click-Rule app … Read more
A New Tool for Sound System Training
Few areas of audio have become more confusing than amplifier power ratings. We have developed a tool to remove the veil, revealing not only the power rating, but what it is based upon.
We’re now in our third decade at … Read more
Room Survey 36 – Messiah College
by Pat Brown
Our recent Sound System Design seminar was held at Messiah College in Mechanicsburg, PA. The beautiful campus has a number of performance spaces, and we had the privilege of visiting two of them for a tour and … Read more
Messiah College Room Data
These files are for the attendees of the SyAudCon Sound System Design seminar held at Messiah College.
The raw B-Format wave files can be downloaded here (358 MB).
https://www.prosoundtraining.com/wp-content/uploads/2018/09/Messiah_Raw_Wavs.zip
Each of the following zip files contains a B-Format RIR, Omni … Read more
Audio Power Amplifier Maximum Input Voltage
True Line Level Signals Can Clip the Power Amplifier Input Stage
Audio is a mature technology, and older than most. Its roots go all the way back to the telegraph. This would lead one to believe that the field would … Read more
Can a Reflection Be Equalized?
Pat Brown answers the question, “Can a reflection be equalized?”. He shows through a video demonstration that it is indeed possible under some conditions. Edge diffraction in a loudspeaker is used as an example.
This is an old topic that … Read more
GratisVolver Pro™ Streamlines Your Workflow
by Pat Brown
GratisVolver Pro™ is a major upgrade to a powerful, proven open-loop measurement process.
Early measurement systems such as TEF, MLSSA, and others did not allow the investigator to directly listen to room measurements. We depended solely on … Read more
Room Survey 35 – Hinkle Fieldhouse
Location: Indianapolis, IN
Investigators: Pat Brown, D.B. Keele, Jr.
Hinkle Fieldhouse: Hinkle Fieldhouse is a 10,000 seat basketball arena located on the campus of Butler University in Indianapolis, Indiana, United States. When built in 1928, it was … Read more