Charts & Graphs?

Over the years I've seen a lot of Charts & Graphs guys convert to listening. Still I'm noticing on this forum there are guys who want to use charts as proof instead of their ears and years of experience. In this era of the hobby that seems odd to me. Testing isn't odd, all of us have done it or know someone who does. What's weird to me is that someone would use the "Graph Card" instead of saying they haven't done or can't hear it. When someone throws the Graph Card at me it takes their credibility down a few points instantly. It tells me they are not confident in their abilities as a listener and lack a certain level of experience. In a lifestyle and hobby of listening, personal listening is the end game and those who say "it can't be heard" says to me just that, that particular listener can't hear it.

"Show me a graph?" my answer is "why", with the question "you can't hear it?".

Sometimes this hobby to me when reading certain folks feels like it is back in the 50's and the fella is wearing a well pressed white or blue shirt with leaky pens in his pocket along with their 50's style glasses. The cuff of the pants are rolled up exposing brilliant white socks. This guy walks up to you and says "prove it, show me a chart". Your stereo is sitting right there buddy, prove it yourself :)

nerds are cool btw

Michael Green

Bfbc100a 64c1 4696 8ad2 e1a6e37e3201michaelgreenaudio
It needn’t be one or the other; bench tests can aid the consumer in narrowing his search for, say, a synergistic loudspeaker/amplifier pairing. When a John Atkinson bench test of a power amplifier reveals the amp to have a very high source impedance (not uncommon in tube designs), and a speaker to have a wildly-varying impedance curve, the consumer will know there is a good chance the pairing of the two will be unsuccessful; the speaker may not sound as the designer intends it to. Without the bench tests revealing the amp’s and speaker’s impedance characteristics, the consumer will not know where to lay the blame for the sound resulting from the pairing. With the test results, the consumer will be better informed about how the speaker and/or amplifier will interact with other pairing candidates, at least as far as matters of impedance are concerned. Good information to have, imo.

Well I must say, you got me on that one bdp24. At the same time I've never owned a mismatch speaker/amp combo. And I've never looked up a graph to hook up a speaker.


MG, I was first apprised of the amp/speaker impedance interaction when looking for an amplifier for the original Quad ESL, which has an insane impedance curve (from around 1 ohm to 30!). When an amp with a high source impedance is partnered with the Quad, the resulting frequency response will closely resemble the impedance curve of the amp. Not good!

Hi bdp24

I’ve owned several pair of the 57’s and 63’s. Never had a problem mating them.

But let me ask you this. You used a graph to find an amplifier you liked? Second, JA’s bench testing specifically had a graph for you to follow?

Are you using the same amp JA tested for you with your ESLs?