Common Amplifier Format: Ashly SRA-4150
by Pat Brown
Entries by Pat Brown
Room Survey 37 – Crossroads Fellowship
by Pat Brown
Our spring 2019 Sound System Design seminar was held at Crossroads Fellowship in Raleigh, NC. The massive building is a converted power tool distribution warehouse, gutted and redesigned as an assembly space for Crossroads Fellowship church. It … Read more
CAF Voltage Divider Calculator Illustrates the Maximum Power Transfer Theorem
by Pat Brown
A Voltage Divider Calculator is the latest addition to the CAFViewer. Pat uses the calculator to illustrate the “Maximum Power Transfer Theorem” which states that an impedance-matched interface transfers the most power from a source to
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
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