Aaron_Smith
Stunt Coordinator
- Joined
- Jul 22, 2002
- Messages
- 105
Adire has a very good tech paper on setting up subs at their website; I would encourage you to read it, get an SPL meter, and give it a try. It will allow you to properly set your crossover frequency, phase, and gain on the amp.
Be patient... I finished my sub (mid Q sealed tempest) about a month ago, and I'm still tweaking like mad to get the right amp settings. But I'm finally to the point where all I'm hearing is beautiful, clean bass and the sub is acoustically invisible. Because of the shallow x-over slope of the PE 250watt plate amp, I've found that I have to set the cutoff below 55 Hz, otherwise voices and instruments bleed through. I may mod the sub amp to add a second 12db/oct. filter for a steeper rolloff.
For those of you who have used the Radio Shack SPL meter for setting up- are you using any sort of correction to account for the reduced meter sensitivity at lower frequencies?
Be patient... I finished my sub (mid Q sealed tempest) about a month ago, and I'm still tweaking like mad to get the right amp settings. But I'm finally to the point where all I'm hearing is beautiful, clean bass and the sub is acoustically invisible. Because of the shallow x-over slope of the PE 250watt plate amp, I've found that I have to set the cutoff below 55 Hz, otherwise voices and instruments bleed through. I may mod the sub amp to add a second 12db/oct. filter for a steeper rolloff.
For those of you who have used the Radio Shack SPL meter for setting up- are you using any sort of correction to account for the reduced meter sensitivity at lower frequencies?