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Parts Express 80 Hz Low Pass 4 Ohm Crossover
I have four Boston Pro Series 50SE 5-1/4" drivers at 3 ohms each. I need a 12db slope at about 80 Hz for one pair so I can augment bass from 60-120Hz in a very damped car (the BA's are in small custom enclosures). Which 4 ohm LP x-over gets me closest?
These filters will be the closest to that figure.
Date published: 2014-12-31
I have some marathon 2x18 subwoofer rated at 4800 watts max (I dont believe it's true though). It doesn't hit hard as I think it should. I'm thinking of adding these crossovers to them before scrapping them. Will this give them better lows.
This depends on too many variables to give you a solid answer unfortunately. If the subwoofers are crossed over much higher or playing full range, this will certainly make them sound cleaner as a subwoofer.
Date published: 2014-06-16
How will this affect speaker power output? I have 91db full range speakers and will be adding a 91db sub woofer. I don't have the ability to control volume independently on full range or sub. Will the sub have lower volume? Will I need to add an L-pad?
This low pass filter, like all passive crossovers in all speaker systems, will create a -3 dB power loss between the amplifier and speaker. Since all of your speakers suffer the same insertion loss from their crossover networks, you will not notice a loss in sensitivity (how loudly it plays). This does not necessarily mean that you won't want to turn the subwoofer up or down once in use. An L-pad will allow you to turn it down, but of course not up. That would require a subwoofer amplifier.
Date published: 2014-07-25
I have a 6Ohm and 4Ohm box in parralel, this gives me a 5Ohm load i think. Is a 4Ohm low pas filter then ok for me?
Actually a 6 ohm and 4 ohm load in parallel will yield closer to a 3 ohm overall load. A 4 ohm crossover will work but the crossover point will change slightly, in this case go up a bit.
Date published: 2014-02-24
2 subs in 1
I am in the planning and pricing phase of a project. I Want to build a sealed 10" sub and and a ported 10" (rss265HO) sub in the same outer box. I was planning on using the dayton Spa 1000 setting the x-over at about 150 hz then dividing that signal up so 150-80 ( high pass at 80 hz) goes to sealed enclosure and sub 80 to ported will this handel that power.do i need to put 2 in parallel
This will work for your application, since the drivers will be wired in series you will be right at the RMS power limit of the crossovers so you should be fine.
Date published: 2015-01-07
Is this what I need??
I'm building some towers with passive subs in each one. The sub drivers are 4ohm, and the towers' impedance is 8ohm. Is this the appropriate filter to use or will its impedance cause problems with the 8ohm impedance of the towers after the inline sub? Or, should I opt for 8ohm subs and filters instead?
This will affect overall system impedance and your amplifier will see something close to a 2-3 ohm load overall which is generally not recommended. If you use 8 ohm sub drivers with the 8 ohm filter, your overall impedance will be 4 ohm which may or may not be good for the amplifier, you will have to check the manufacture specs.
Date published: 2012-11-09