Post by Deleted on Nov 15, 2019 9:03:01 GMT
Question: Why are your speakers only rated at 86 - 90 db when there are some at over 94db spl?
Answer: HELLO CRAIG, I LIKE MOST SPEAKERS DESIGNERS TRY TO GET THE SENSITIVITY AS HIGH AS POSSIBLE. WHEN BEING TIME AND PHASE CORRECT IS THE MAIN DESIGN TARGET (I BELIEVE THIS IS THE MOST IMPORTANT PARAMETER IN LOUDSPEAKER DESIGN) THERE ARE SOME RULES. 1) FROM 150 HZ AND ABOVE ONLY ONE DRIVER CAN BE USED PER FREQUENCY RANGE. USING MORE THAN ONE MIDRANGE FOR INSTANCE NO MATER HOW PERFECT WOULD SMEAR EACH OTHER. TIME SMEAR LOWERS REAL TRANSPARENCY. 2) EACH DRIVER MUST BE SMALL ENOUGH TO MINIMIZE BEAMING. BEAMING WILL CAUSE PROBLEMS WITH ROOM REFLECTIONS NOT BEING A FACSIMILE OF THE DIRECT SOUND. BEAMING DEGRADES IMAGE STABILITY. 3) DRIVER DIAPHRAGMS MUST BE RIDGED ENOUGH TO ACT PISTONIC AS MUCH AS POSSIBLE. NON PISTONIC CONES CAUSE TIME SMEAR. 4) FIRST ORDER TRANSFER FUNCTION BETWEEN THE DRIVERS INCLUDING THEIR X-OVERS. THIS ALLOWS FOR WAVEFORM PRESERVATION, THE KEY TO REPRODUCING MUSIC IN A UNBELIEVABLY REALISTIC WAY. ALL THIS ADDS UP TO ABOUT 86DB SENSITIVITY EVEN WITH TODAY'S SOPHISTICATED MAGNET SYSTEMS AND CONE/DOME TECHNOLOGIES. TO GET HIGHER SENSITIVITY YOU WOULD NEED HORN (VERY COLORED), MULTIPLE DRIVERS (TIME SMEAR), OR CONES/DOMES SO LIGHTWEIGHT THEY ARE IN CONTROLLED CHAOS (DISTORTED WAVEFORM). ALL OF THESE ARE UNACCEPTABLE TO ME. TODAY WE HAVE REASONABLY AFFORDABLE HIGH QUALITY POWER AVAILABLE LOWERING THE NEED FOR HIGH SENSITIVITY. IF I COULD DO ALL OF THE ABOVE INCLUDING HIGH SENSITIVITY I WOULD NOT BE ANSWERING THIS QUESTION. I WOULD BE A RETIRED MULTI- MILLIONAIRE IN THE CARIBBEAN.