What is best audio Distortion meter Bang for Buck
- Thread starter Greg
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When I was looking for some, I also looked at the HP 8903B Audio Analyzer and the ATS1 (but you need some optional boards install, if I recall)
but their are all old,,,,, and you never know how beat up they are or if they will even work and for how long.
What does anybody thing of the HP 8903B Audio Analyzer?
but their are all old,,,,, and you never know how beat up they are or if they will even work and for how long.
What does anybody thing of the HP 8903B Audio Analyzer?
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Greg, here is a screenshot of the first generation QuantAsylum QA400 running a 1000 kHz fundamental at 250 mVrms on loop back. THD loop back distortion is .0007%, and THD+N is .004%.
This is the first generation QA, and there is almost no documentation on this legacy unit. Newer units are much improved along with the software. It took me a week to figure out how to get exactly 250 mVrms out of it. Partly my lack of knowledge and not so good software on this early unit. Later units and software are much improved along with documentation.
I love this thing and am looking forward to buying the latest and greatest if they ever get the chips.
This is the first generation QA, and there is almost no documentation on this legacy unit. Newer units are much improved along with the software. It took me a week to figure out how to get exactly 250 mVrms out of it. Partly my lack of knowledge and not so good software on this early unit. Later units and software are much improved along with documentation.
I love this thing and am looking forward to buying the latest and greatest if they ever get the chips.
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Nope, using that mil-spec Belden 83284, stranded. Same as I used in the amps. Amphenol 69475 BNC connectors harvested from what I was told was a old DOD radar installation. The Hakko desoldering station makes quick work on the Amphenols. They look like new before installing new cable. Very high quality.
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A little history regarding how they came to be .... as it fits Phoenix appropriately!
What is UUC Motorwerks? UUC is the acronym for Underground Upgrade Club.
For those automotive enthusiasts who have "significant others" (wives, husbands, etc.) who do not understand the desire and need to enhance the performance of a vehicle, welcome to the club.
If you ever get these kinds of questions: "Why do you need new wheels when the old ones are fine? Why do you need new suspension if the current ones aren't worn out? Isn't your current car fast enough?" - we empathize with you. You might just have to hide a few things from the Missus or your Old Man. You know the drill...no credit card or check purchases... sneaking cash to buy upgrades to feed your automotive addiction. For your convenience, UUC Motorwerks accepts cash and we ship discretely. We can even ship to your employer!
I've got one. Picked it up at The Dayton Ham radio show 30 years ago. About to retire it as I bought the HP8903. Haven't got around to doing much with it.
The 334 is pretty straight forward. You need a low distortion oscillator such as the HP 204. If you want to go real vinatge, pick up an HP 202 oscillator. It was the first HP product built in their garage. The HP339 combines the oscillator and analyzer. I've never had the 334 calibrated but from what I can tell it's still accurate. You can't beat the build quality of vintage HP gear.
Sound Technology is another vendor. I had two given to me. We used them at Sound Values/Sound Valves. Again pretty straight forward. I'd like to find a tech that knows them.
The 334 is pretty straight forward. You need a low distortion oscillator such as the HP 204. If you want to go real vinatge, pick up an HP 202 oscillator. It was the first HP product built in their garage. The HP339 combines the oscillator and analyzer. I've never had the 334 calibrated but from what I can tell it's still accurate. You can't beat the build quality of vintage HP gear.
Sound Technology is another vendor. I had two given to me. We used them at Sound Values/Sound Valves. Again pretty straight forward. I'd like to find a tech that knows them.