SRS - SR-1 Audio Analyser

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The AP is pretty much in a league by itself. I think the SRS unit competes well with the Agilent 8903E and the Prism D-Scope.

Are you joking, the AP S1 really pretty poor compared to modern (and even older) units.

I have a couple of R&S UPD's that date back to early 90's and they still outperform the SYS2722 in almost every aspect (they lack 96/192 SPDIF - but you can add a simple interface to the serial digital output that supports upto 768KHz).

I've 3 AP S1 322's and they are only really good thesedays for the burn-in test racks where performance is not such an issue.

The SR1 support realtime FFT, for my own development work I cannot stress how import FFT is for the Lab bench - and just one area where R&S run circuits around the Audio precisions.

AP's are good for the production line, the SR1 and R&S are the best for the lab bench - real development work.

The SR-1 been around for awhile now, but like the R&S (which have been around even longer) have found it hard to gain market traction. The R&S are expensive but far better build quality then the AP's.

I only power up the SYS2722 for reports where an industry standard is required - its such a horrid machine to use I'd rather stab a hot soldering iron into an open flesh wound then use the AP's software - every time I use the machine I'm just amazed how bad the software is - I never seem to get used to it!

My colleague and I frown when we use AP's on the production lines or when we work with clients - its never something to look forward to, we always ridiculing how bad they are.

I don't want to appear to be anti AP - its just that they are so useless on the lab bench.... I'm happiest when working in the lab, so I don't understand why they have become so popular, but as I say they are the perfect unit for the production line...

My first audio FFT analyser was the Stanford research SR770 - fondly remembered to this day, I was introduced to the R&S UPD by the guys at Pacific Microsonics during the development of HDCD PMD100 and the rest is history.

The SR770 was / is a great unit, although not especially tailored to "HiFi", I had a very positive experience the the short time I used an early SR-1 which is in a different league to the much older SR760 / SR770's.
 
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Hi JohnW,

thank for your reply.

What would you prefer a used UPV or a brand new SR1+? Even a used UPV with options B1, B2, and B3 is more expensive than a brand new SR1+ with warranty. Do you have you any experience operating those units with an external monitor?

Thanks,

Michael
 
Michael,

The UPV is a truly excellent unit - your not really comparing like with like when it comes to price.

The Ultra low jitter option of the SR-1+ looks really good (although no B/W is specified)- SRS know a thing or two about Phase noise :) I use a few of there Rubidium clocks in my lab - which have lower short term phase noise then my FTS and Agilent cesuim clocks which I no longer use due to fears of tube life, although I briefly power them up every now and then to keep the tubes pumped and in good condition.

The UPV is one of the highest performance units you can buy - it just depends what's good enough for your work? - that said, I'd very happily go with the SR1+

SRS have always offered affordable service and support - they still offer genuine "old school" support - you don't have to fear selling your kidneys if you need spare parts or help. R&S support is pricey - they are very German in there attitude which is a little / alot less flexible....

I'm sure you will be happy with both units, just a lot poorer if you go with the R&S!

I'm thinking of buying a SR1+ for its FFT and Jitter Measurements.
 
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The SR1 support realtime FFT, for my own development work I cannot stress how import FFT is for the Lab bench - and just one area where R&S run circuits around the Audio precisions.

AP's are good for the production line, the SR1 and R&S are the best for the lab bench - real development work.

- its such a horrid machine to use I'd rather stab a hot soldering iron into an open flesh wound then use the AP's software - every time I use the machine I'm just amazed how bad the software is - I never seem to get used to it!


The AP software is a disaster for the non-programmer specialist (me). it is just too unwieldy. More high-level programming/gui would be better. Pre-canned test setups etc are needed in a clear and easy way. Though it can do a lot of things --- the learning curve on all the bells and whistles is tremendously steep.

I only use the AP 2722a when I need to have great accuracy at the absolute very lowest distortion levels.


THx-RNMarsh
 
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Michael,

Nothing bad was intended, its just the way it is :) every nation has its traits :)

I have many good Germany friends and we often laugh at the difference between each others ways of doing things :) Germans tend to be ultra professional - everything is engineered and documented, nothing goes against this procedure - if you look at English Engineering, it could hardly be described as "over Engineered" - rather "we had a limited budget, lets just hope it does not rain"..... Lucas has much to answer for!

A good friend of mine heads one of the Osram advanced lighting divisions in Germany, he visited me in China and I recall him looking at one of my circuits and commenting, we would never allow this in Germany (a Voltage reference output I'd filtered with an R/C circuit (with Diode Speed up circuit), where the "cheap" electrolytic capacitor had unknown leakage current) sure I could have used the old trick of stacking the caps, but hey.... it works well enough for the intended application... :)

You know, the French have never been known to strike, and I'm sure you can find good food in England, and just don't mention the weather or beaches.... there are "light hearted" reasons for national stereotypes :)

A line from one of my favourite films "Snatch" :-

"We have beaches in England"

"And tell me, who the F**K wants to go to see them?"

Did I mention that the Czechs are famous for not using deodorant - its so embarrassing! (Just read the travel books on Czech rep.!) and it not like the trams have Air-conditioning (only the Driver, the passengers are left to swelter)!
 
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Here is a classic example of "British" engineering from a recent article :)

Fans of the McLaren F1 already knew that Gordon Murray used the taillights off the Dutch Bova Futura bus. But according to Evo’s Henry Catchpole, it was actually a decision that should be credited to TVR.

Stories don’t get more British than this. Apparently, the chaps over at TVR were using Bova’s rear lamps, so Woking assumed they must have homologated them for road car usage.

That wasn’t quite the case. In reality, Blackpool simply put those on their cars because they just worked, but completely skipped the, um, legal part.


Now this story would be unheard of in Germany :)

I still have a couple of good old Range Rovers :) you have to love them despite there "personalities"
 
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I used it for a recent article in Audio Xpress. It worked great and was feature packed. The support from the company was excellent.

All that said, I'm not comparing technical specs between the SR1 and the competition. You can research that. Also, I have not used any Audio Precision device.

Basically, my ramblings point to a solid piece of equipment that is a great price point compared to trying to get something used that you hope has zero issues.

Send me a PM if u want a contact reference @ Stanford Research.
 
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