- #Compressor limiter jriver media center plug in drivers
- #Compressor limiter jriver media center plug in driver
Mark Seaton uses DSP amplifiers from Speaker Power.
#Compressor limiter jriver media center plug in driver
picking a driver with deeper natural response plays out, particularly if real use will tickle the limits of the subwoofer system." This reality with program material is not well demonstrated with sweeps which only sweep a single frequency, but can be hinted at in the maximum capabilities, and is also where the compromise of using EQ to achieve a response vs. Mark Seaton says the following in that thread: "While I know the upper octave of the subwoofer range are fairly easy for most woofers to produce, a 60Hz high level signal requires just as much Voltage as a 16Hz signal, and if you produce equal signals at the same time, that requires 2x the peak Voltage. There is a recent thread at AVS that gets into a discussion about limiting and might be worth reading. It is also of greater benefit when using a less expensive driver with less X-Max. This seems to be a much cheaper method than adding more subs. In other words, you are giving yourself the maximum headroom that your driver will allow. Now the sub can almost reach reference levels for most material while still providing a lot of low output. However, if I can give it the 1200 watts the driver can handle, then I can get output levels of 113 dB or greater over 30 Hz. Therefore, this sub isn't capable of reference levels. The LFE channel can have output up to 115 dB and higher when combined with redirected bass. This only gives you output at 30-100 Hz of 105 dB. In my 15" driver example, if you wanted it to play to 10 Hz, you would need to limit your power to about 770 watts.
What this does is give a lot more power available to your mid-bass while protecting the driver from over-excursion. Is this something that is even possible? Is there a way to do it based on the electronic signal? The Limiter DSP could then make sure the maximum output was never exceeded for each frequency range. You would need to play a test tone at a certain frequency and record its dB in the Limiter DSP so MC would have a reference between its volume control and your output (unless there is a better method).Ĥ. The limiter DSP could use these to create a limiting curve.ģ. Once the maximum SPL is recorded for the frequencies you could plug these numbers into the limiter DSP. Measure distortion with REW (or other measuring software) at increasing volumes at set frequencies to determine the maximum output you can have at each frequency.Ģ. If MC could provide the DIY subwoofer community with some more advanced tools, I think that would be great.ġ.
There has also been a request for this with the MiniDSP. I don't know for sure of anyone that has one, but I think some of the OEM subwoofer amps with DSP have limiting capability (Seaton Sound, SVS). I was wondering if it was possible to create a Limiter DSP that allows the driver to always maximize the power available at any frequency.
There is usually a trade off between dynamic range in the mid-bass vs allowing the driver to reach maximum excursion in the low bass.
The higher the frequency, the more power the driver can take before reaching X-Max. However, to reach X-Max at 20 Hz it takes 1200 watts (which is the maximum power the driver can handle). To reach 23 mm of X-Max at 5 Hz, it takes 800 watts. For example, I can design a sealed subwoofer with a 15" driver that has 23 mm of X-Max. In order to keep from damaging your subwoofer at low frequencies either a high pass filter is used to filter out lower frequencies, or the available power is kept to a level that it won't push the driver to much. A driver that moves 2 mm at 50 Hz might move 18 mm at 10 Hz with the same amount of power. If given the same amount of power, the excursion increases as the frequency decreases. For subwoofers this is in the range of 10-40 mm one way. Each driver has an X-Max or amount of excursion it has available.
#Compressor limiter jriver media center plug in drivers
I've never designed or built one, but I've been using WinISD Pro to model drivers in both sealed and ported configurations. I've been working on modeling some subwoofers.
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