Yamaha5000
Never settle for 2nd best
Methods/procedures step by step?
Required test equipment to perform these test?
Required test equipment to perform these test?
How to verify original equipment specifications?
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Semanon
Super Member
Start here:
https://www.audioholics.com/audio-amplifier/basic-amplifier-measurement-techniques
Lots more all over the Internet. Maybe you can synopsize your findings for the rest of us.
https://www.audioholics.com/audio-amplifier/basic-amplifier-measurement-techniques
Lots more all over the Internet. Maybe you can synopsize your findings for the rest of us.
Great Link Semanon. Thanks. Don't think I could have said it better then Gene "Sound is as much of an emotional process as it is an audible one."
Yamaha5000
Never settle for 2nd best
I look forward to reading the link in depth.
I am aware of the Audio Precision units, if I win the Mega Millions Lottery I plan to purchase one!
Now for the reality World, any other ideas? Don't need 8 channels maybe only two.
Recently we've replaced the venerable SYS2722 with the AP APx585 HDMI Analyzer which tests up to 8 channels, and is much easier to use. Ever since using the APx585 we've been able to apply a consistent measurement test suite to each amp and receiver we've measured on it which is outlined below. The APx585 doesn't come cheap. In fact the version we have represents a $40k investment.
I am aware of the Audio Precision units, if I win the Mega Millions Lottery I plan to purchase one!
Now for the reality World, any other ideas? Don't need 8 channels maybe only two.
Recently we've replaced the venerable SYS2722 with the AP APx585 HDMI Analyzer which tests up to 8 channels, and is much easier to use. Ever since using the APx585 we've been able to apply a consistent measurement test suite to each amp and receiver we've measured on it which is outlined below. The APx585 doesn't come cheap. In fact the version we have represents a $40k investment.
Yamaha5000
Never settle for 2nd best
I have been thinking about that approach. Have not seen one for $200.00
Yamaha5000
Never settle for 2nd best
See how an amp you purchased performs? Yes
Validate that the work you did? Yes
See how mods performed? Yes
Validate that the work you did? Yes
See how mods performed? Yes
Yamaha5000
Never settle for 2nd best
This was an excerpt from the link you provided:
Recently we've replaced the venerable SYS2722 with the AP APx585 HDMI Analyzer which tests up to 8 channels, and is much easier to use. Ever since using the APx585 we've been able to apply a consistent measurement test suite to each amp and receiver we've measured on it which is outlined below. The APx585 doesn't come cheap. In fact the version we have represents a $40k investment.
Recently we've replaced the venerable SYS2722 with the AP APx585 HDMI Analyzer which tests up to 8 channels, and is much easier to use. Ever since using the APx585 we've been able to apply a consistent measurement test suite to each amp and receiver we've measured on it which is outlined below. The APx585 doesn't come cheap. In fact the version we have represents a $40k investment.
Yamaha5000
Never settle for 2nd best
I see that most electronic test equipment manufacturers built Audio Analyzers. I don't believe these other units are software driven? But are there any good ones of these?
Are they simply spectrum analyzers?
I see these most wonderful graphs that Audio Precision can produce, I would think this is due to it's interface to Windows. These appear to be easy to understand. It is one thing to capture accurate data and another to process this data into a user friendly format. For example:
I recently purchased the complete set of PEAK test units. The DCA75 PRO has this ability to provide graphs to the computer. To understand those graphs appears to be a mystery here on AK.
Are they simply spectrum analyzers?
I see these most wonderful graphs that Audio Precision can produce, I would think this is due to it's interface to Windows. These appear to be easy to understand. It is one thing to capture accurate data and another to process this data into a user friendly format. For example:
I recently purchased the complete set of PEAK test units. The DCA75 PRO has this ability to provide graphs to the computer. To understand those graphs appears to be a mystery here on AK.
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Yamaha5000
Never settle for 2nd best
In looking at used Audio Precession Audio Analyzers they have many models and options. Looking for a roadmap to shed light on the sequence of these models and options?
https://quantasylum.com/collections/frontpage/products/qa403-audio-analyzer
is a modern day economical audio test set
To bad the silicon shortage is causing long delays for mfgs using specialized parts.
is a modern day economical audio test set
To bad the silicon shortage is causing long delays for mfgs using specialized parts.
You can get good results economically by using a good quality USB-audio interface and inexpensive or free software. I've got an Alesis IO2 and using it with Visual Analyzer can get most of the measurements you wish to perform.I look forward to reading the link in depth.
I am aware of the Audio Precision units, if I win the Mega Millions Lottery I plan to purchase one!
Now for the reality World, any other ideas? Don't need 8 channels maybe only two.
Recently we've replaced the venerable SYS2722 with the AP APx585 HDMI Analyzer which tests up to 8 channels, and is much easier to use. Ever since using the APx585 we've been able to apply a consistent measurement test suite to each amp and receiver we've measured on it which is outlined below. The APx585 doesn't come cheap. In fact the version we have represents a $40k investment.
There is a HP 8903B for not too much I saw. I have the A version.
Posted it on Dollars and sense .
Athanasios
Posted it on Dollars and sense .
Athanasios
Yamaha5000
Never settle for 2nd best
Has any
Has anyone been able to find an update on the QA403 availability?
Yamaha5000
Never settle for 2nd best
Anyone recognize the Manufacturer and Model of this Audio Analyzer?
Any other front panel markings? What does the sticker on the back (or bottom) say?
Yamaha5000
Never settle for 2nd best
Photo is a web capture with no additional photos or information
Yamaha5000
Never settle for 2nd best
Thank You very much, you are correct: Panasonic VP-7725 $2,995.00
