"Power amplifiers: High speed, linear, analogue bipolar, 75 wpc for the tweeters and 250 wpc for the bass drivers. System distortion typically better than 0.002%."
So, is that RMS or some fleeting peak power rating? Define "better than 0.002%, i.e. can we have an output level with that please.
The power quoted is RMS, but given the duty cycle in music, some quote twice that, which would be the peaks. Distortion is what you get while you're playing music, so not fudged. They won't give 250 Watts into a resistor but they will give 500 Watt peaks playing music, which equates to 110dB@1 M both driven with sub and about 10dB more for peaks.
"Bass driver: Very high power handling, long excursion 6.5" paper cone drive unit with 1.5" voice coil and exceptionally broad bandwidth to enable a phase perfect crossover at 3.4 kHz. Bass extension better than - 6dB @ 60Hz."Is that the manufacturer's spec for the bass driver or an actual measurement of your specific implementation? If the latter please qualify it.
I've never seen any claims from any manufacturer that distinguish one drive unit from another and there are bogus claims out there, so we give an indication that what we're using is at the top end of the scale, which means more linear travel, power handling etc. SPL claims are verified by the manufacturer and measurements are made by us in free space using both Bruel and Kjaer and Computer based systems. They are as our claims are, conservative and verified with the manufacturers who we work closely with.
"System Amplitude Response: better than + or - 2 dB 100 Hz - 20 kHz."
Measured how? Is that an in anechoic or in-room response, if it's in room is it full, half or quarter space? I'm also assuming you mean 'frequency response for the speaker system', the above could just as easily be read as an amplifier spec, and if so why does it crap-out at 100Hz?
I think is more a case of your lack of understanding than any shortfall on our part Tone. If a driver is -6dB @60, it has to be rolling off somewhere higher, in this case 100 Hz, so pretty much what 6" drivers do and the right shape for the Sub which gives -6dB @ 30 Hz.
In my experience the only amplitude response figures it is fair to quote are free field or anechoic. However these measurements are practically meaningless and people read too much into them. You don't hear quite large changes.
I've known a reviewer decide that an under-magneted 5" Two way had more bass than two 10" per side in floor standers, because he couldn't distinguish between lack of control and the opposite.
Most people talk about bright speakers having peaks at high frequencies, which is nonsense because it is almost always the tweeter being audible through the bass driver below the crossover point and often because the design uses 1st order filters.
What sensible potential customers do is ring us up or email for explanation of some aspect of the speaker performance that concerns them and we give truthful answers.
I'm not even going to argue webstats with you because they're not mine and I don't understand them but I have verified the figures with an IT professional.
