Nearly all manufacturers do not advertise/exhibit their product measurements? Why?
After my Audio Science Review review forum, it became apparent that nearly the only way one can determine the measurements of an audio product is wait for a review on line or in a publication. Most equipment is never reviewed or is given a subjective analysis rather than a measurement oriented review. One would think that manufacturers used tests and measurements to design and construct their products.
Manufacturers routinely give the performance characteristics of their products as Specifications. Those are not test measurements.
I searched the Revel speaker site for measurements of any of their speakers and could not find any. Revels are universally lauded for their exceptional reviewed measurements. Lack of published manufacturer measurements is true for nearly every speaker manufacturer I've searched for on line, perhaps several hundred. Same is true for amps, pre-amps, DACs, transports, turntables, well you get the picture. Do they have something to hide? I doubt the good quality products have anything to hide but poor quality products do.
ASR prides itself in providing "true" measurements that will aid in purchase decisions. Why don't the manufacturers provide these measurements so that reviewers can test if they are truthful or not?
Then there are the cables and tweaks for which I suspect that there are inadequate tests available to measure sonically perceived differences but which objectivists believe don't exist or are "snake oil."
Well, please chime in if you have some illuminating thoughts on the subject.
I would have loved to see manufacturers measurements on my equipment and especially those that I rejected.
Harman (Revel/JBL) engineering loves to release the detailed measurements but their marketing department thinks that will be too confusing for customers to understand. Fortunately the engineering team has leaked a boatload of them and someone online has organized them for you (NOT me):
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@kota1
Specs or measurements? I went back to page 1 and you said this:
You have measurements for this Mapleshade cable? How about for these claims they make on their home page: • Lift all speaker, power, and interconnect wires 8" off any carpet or plastic tile. Use string, wood, cardboard, or 20 ounce Styrofoam cups for temporary props. You’ll think you’ve pulled horse blankets off your speakers. For a more civilized-looking solution You have done this and have before and after measurements of your system? How about this: NEVER use speaker cables shorter than 8'. Amazingly, 4' sounds much worse than 8'. Contrary to common belief, shorter interconnects (2 m or less) and longer speaker cables always sound WAY BETTER than the opposite—based on extensive head-to-head tests. You have measurements to back this? To improve high end cables, remove any outer nylon mesh: the bad dielectric only adds grunge. Remove any metal barrels on RCA plugs—you lose the locking feature and gain transparency. Anyone done this here and has measurements to back before and after results? Then there is this: Any cable with a molded-in ferrite (the small plastic-covered cylinder at one or both ends) sounds way better with the ferrite removed. This is your favorite cable, right? Where are the measurements to back your choice of this cable? Let's get this cable topic settled and them I am happy to discuss your room measurements. Until then it sure looks like you want to change the topic.
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Sadly those measurements are gated/in-room and as such, have no low frequency resolution to speak of. Notice how the X axis starts at 700 Hz. Things like cabinet/port resonances are just not seen with that kind of measurement I am also pretty sure the response above that region is also smoothed and is not raw. For a company their size, they should get proper anechoic measurements for their speakers. |
