Too Tall (Curtis H. List) wrote on Sat, 21 October 2006 16:23 |
I see you stuck to analog.
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I sure am...at least when it comes to powered loudspeakers
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.... I need to find the same package in IIR.....
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At AES both Analog Devices and Texas Instruments presented us with entry level yet serious DSP toys, that comes with very user friendly design software. Check them out
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BTW I was surprised on how low you went with the B&C compression driver. The horn must support it quite low to make it stretch that far. Even with that I thought you would hit Xmax and shatter the diaphragm. 2nd order acoustic makes matters worse......
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We tested HF drivers with 100Hz and 40Wrms and they lived. Because of drivers sensitivity you do not need "much" power in 500 to 1K region...however you need all the power you can get to maintain HF above say 6K ! HF "crispness" comes from high peak capabilities of the system...this is the reason you can not power HF driver with small amp with few tens of watts.
With normal acoustical programme HF peaks were in a region of five to ten times higher than LF peaks even knowing, that HF driver is trimmed down approx. 10dB to match LF drivers sensitivity.
In other words : at room level, where LF peak voltage goes to 5Vpeak, HF peak easily stretch in region of 50Vpeak ot higher. If you don't consider this, box looses its transparency and "realysm"
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I’m getting away with it because the BMS drivers are a totally different design. I did not think conventional compression drivers would take it. At the least it should distort something fierce.
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Well...we use only "page one" B&C drivers and over dimensioning paid off...using smaller drivers, that would suffer from problems you mentioned would result in completely different product....
Alex