If you go to the drag strip and test run your car and you post your 0-60 and 0-100 run, I wonder if you will get in trouble with the manufacturers. And thus, the conversation.
Should Speaker Manufactures provide a Frequency Response Graph?
Eric at Tekton Designs has been battling two different reviewers who have posted measurements without his permission, using Klippel devices for their respective measurements.
It seems to me that if manufactures provide a simple smoothed out graph, consumers can see how much a speaker is editorializing with a frequency response that deviates from neutral.
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@deep_333 +1 The most important graph for me is the Impedance & Phase vs frequency graph. I want to know if my amp needs to drive 2 ohm loads with a difficult phase angle. I believe it to be the most important data when choosing a power amp. next up is sensitivity. That too dictates my amp selection. Then I can vet by sound quality to my ears. |
Iaoman,
“In what way? Do these measurements tell me I will like what I hear?”
Lack of measurement understanding does not make measurements untrue. Some things are very subtle in the measurements and it takes time to understand them.
Some things are still lacking in the measurements, I feel transients and detail is still missing but measure and use the data you have and demo for the other things. I have owned two speakers that have both had full spins. The Revel 228be and the JBL 4367s. I did same room/system direct A/B comparisons. Listening to them back to back and looking at the measurements is almost 1:1 how they actually sounded in my room. I bought the revel after demoing and bought the JBL 100% blind based on the measurement…. I kept the JBLs and sold the Revels after direct A/B in my room.
As engineer for 20+ years I can assure you 99% of the high tech things you use (or even keep you alive, I work in the biopharmaceutical industy) were build or designed using models. |
I agree with erik_squires. A frequency response chart made in an anechoic room has little to do with how that speaker will sound in your room with your amplifier. Besides, the impedance of the speaker is changing with frequency which will affect how your amplifier/speaker cables sound coupled to those speakers. Back in the early 1990's I built my first dedicated listening room and I added sound dampening to make my room have a flat frequency response. The room was very close to anechoic. The music sounded dead and lifeless. I had to remove much of the dampening material. That's my point, I guess. If you want flat frequency response then you will need a hemianechoic room like the room where they test speakers. It will not sound so good. Think about live music. No band ever plays in an anechoic room. Life is messy and so is music. |
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