- #Nakamichi ec 200 crossover how to
- #Nakamichi ec 200 crossover drivers
- #Nakamichi ec 200 crossover driver
- #Nakamichi ec 200 crossover professional
- #Nakamichi ec 200 crossover mac
This is because while the steeper slope cuts more energy outside the passband, the concomitant sharper corner allows more energy through, a quite big effect since filters are shown visually on logarithmic axis but the power is not logarithmic.
Interestingly, some research I did for an Audio Engineering Society presentation showed that steeper slopes don't reduce the power transmitted to the driver.
Changing the slope changes not just the phase through the crossover region, and thus the energy sum between the drivers, but also the arrival time. Steeper slopes cut more energy from beyond the transducer's operating range, at the expense of worse transient response (at least in analog crossovers).
#Nakamichi ec 200 crossover professional
I heard no reason to make any slope greater than 24db per octave.Ĭlick to expand.From my professional acoustical knowledge, let me give you the definitive answer! Generally the steeper the slope the more energy you lose in the sound. Any steeper and there would be something missing. Likewise on the midrange driver- if I made it shallower it would start to distort. If I made the slope on the woofer more shallow, it would be pushed beyond its comfort zone and the sound would become fatiguing. If I made the woofer slope any steeper the system would lose transparency. You really need to listen to the sound to decide. I wound up at 800Hz crossover point woofer to midrange with 18db slope on the woofer and 24db slope on the midrange. but woofer to midrange was the most difficult and the most critical to get right because it's right in the middle of the vocal range. Sub to wooer was fairly easy, midrange to tweeter was also easy.
#Nakamichi ec 200 crossover drivers
it took a few years (yes) to get it to sound perfect despite what I knew about the drivers from their tested acoustical properties. My car has an active 4-way system with DSP controlled settings for crossover and slope that I can adjust on the fly. if the frequency is well within its comfort zone then a shallow slope might sound the best. if that frequency happens to be on the edge of where it loses composure and begins to distort, then steep crossovers are in order.
#Nakamichi ec 200 crossover driver
each driver tends to have a sweet spot or range at which it is most comfortable reproducing frequencies. Generally speaking when you have a driver being filtered, the more shallow the slope is the more contribution that driver will have on the sound beyond its crossover frequency.
#Nakamichi ec 200 crossover how to
I know what slope does, but not sure how to pinpoint sound differences due to slope. My question is what crossover slope should I be looking at 12, 18, or 24 db per octave. Room has unequal walls and ceiling to minimize reflections. I also have analyzed my room with Sencore RTA and calibrated mike at the lpreferred listening location and corrected with Ashley 1/3 octave EQ. My question is I am going to keep the crossover points the same-100Hz for subs, 500Hz for LE 15/PR15 combo, and 7Khz for the 077.
#Nakamichi ec 200 crossover mac
The Crown will be replaced with the Mac 2205 for the JBL 2225' subs later this summer, when the LE 15's are going to be powered by MAC 601 mono blocs. Room is 15 x 29 and power comes from McIntosh 2205, recently re capped, etc for the LE 15's a Crown CE 1000 operating in stereo, for the JBL 2225 subs a McIntosh 5300 digital integrated, which serves a control center and Mid range amp for the 375's, and a McIntosh 502 amp for the 077 pair. The subs work from about 28Hz to 100Hz, The LE 15 's are crossed over at 500Hz, the 375 drivers cross over at 7 Khz to feed the 077 drivers.
I couple that to a pair of JBL 2225 woofers (discreet left and right) in separate 5 cubic foot ported and tuned enclosures for subs.
I use per side: 2 LE 15 woofers (recently re-surrounded) and 2 PR 15 radiators (weight rings on the back), matched to 375 16 ohm compression midrange drivers with the HL 89 lens and mirror imaged 077 hi frequency drivers. I use them to drive JBL speakers somewhat modeled after 4350 studio monitors, minus the 12 inch cone. The first x over high side out feeds the second x over one output for mids and highs along with a Paradigm sub woofer crossover feeding the first Nak. I currently use 2 2 way Nakamichi EC 100 crossovers from circa 1980. I could get Bryston for cost but, I hate to say this, but a bit steep cost wise. I am considering new electronic crossovers, especially the Sublime Acoustic K231. New here but been in and out of audio industry for 40 years, mostly out.For the past 8 years sold McIntosh, Audio Research, D'Agostio, Wilson, Levinson, B&W etc, occasionally for a store in New Haven to help out the owner, a long time friend, as fill in sales etc.