Originally Posted by jjjbrim
Hi Mike/other experienced audiophiles, I have finished my build and have my speaker in the unit (set up in parallel as stated would work great with the Inuke 3000 DSP and the Alpine D4 speaker combo) and all of my wiring from the receiver to amplifier, amplifier to subwoofer hooked up. As with pretty much everything else I need some more hand-holding to go forward, I just do not have any experience with amplifiers and it is somewhat daunting although I am sure once I go through this it will be pretty simple. My concern initially is just to make sure that I cannot do anything that will harm the speaker with the amp settings/volume. If I know any of the things that could cause harm I can make sure I do not do them and start playing with the amp and the subwoofer.
Is setting the high pass filter per Mike's recommendations at 20hz in the 3000DSP as simple as just going into parametric EQ and dialing in 20hz in filter 1? Do I need to do the same thing in the tab under Filter/Crossover as well?
Is the Room EQ Wizard Software just to tune in the sub or is it required to make it sound decent period? I have have never used it so if there is a place I can head that provides specific step by step instructions just lead me there an I will start reading. Also, if there are any other places that I need to be doing more homework instead of pestering you guys I will do it, I am really flying completely blind because ALL of the audiophile part of this is not that you folks understand I have never done. I am grateful for all of the help.
With a D4 and a single channel, I'd wire the coils in series for an 8-ohm load and bridge the amp. With a pair, I'd parallel the coils and run the amp in stereo.
If a LilWrecker, Follow LTD02s instructions on setting the highpass below 20 Hz. With a MicroWrecker, 4th order 20 Hz is fine. Change the setting to Linkwitz Riley or Butterworth (your choice), set the slope (at least 24 dB/oct), then set the frequency.
You can set limiters in the iNuke as well, these will keep you from hurting your speaker if you're concerned about that. That is the configuration page. Simply turn the knob to the limit maximum watts that the amp will deliver. I've never bothered.
With the highpass in place, it is time for EQ. That is where REW and measurements come in to play. There is no need to measure at more than about 90 dB, all it does is stress the system more. I've taken care of the high power measurements for you, don't risk your junk.
There are TONS of REW how-tos out there, several good ones here, lots of information over at Home Theater Shack. Most of the problems I've experienced with REW have to do with configuration of the sound card.
With a measurement, we can pick proper parametric EQ, which are then entered into the Behringer's DSP as parametric EQ entries. It typically takes three or for cuts to get things sounding decently good. I avoid boost.
Once the highpass and limiter are in place, anything likely to damage your speaker would also likely be making you grab the volume knob, it will be LOUD.