Audioguy564 Posted March 16, 2009 Report Share Posted March 16, 2009 box tuning also plays a role. i believe most people have it set to around 10 hz below tuning frequency. and i would only leave it off for burping. bassrace/driveby leave it on If your enclosure is tuned very low like in the 20's then you would set it a couple of hz under your tuned frequency. The subsonic is high pass filter that you can use to cut out any frequencies on the low end of the audio spectrum that can not be produced anyways. Music is usually not recorded that low unless you have some of the bass CD's. Low frequencies are very tough on amplifiers and is where most heat is created. The sine wave being so long in duration at 20hz really puts a strain on the amplifiers power supply. So if your enclosure is not capable of producing those low frequencies then its best to have it on. Your not wasting your amplifiers power producing a low frequency sine wave that your system is not going to efficiently reproduce. Quote Juan Rodriguez Chief Technology Officer D'Amore Engineering T15KW Support Engineer System. KVT512 Kenwood Fold Out Monitor Epic-160 Audio control Indash epicenter (1)T1500-1BD with T2000.1 Transformer 1700 watts at 2 ohms (2) T600-2 with T800-2 Transformers 320/ch at 4 ohms (2) QSD216 Q series MB Quart 6.5 inch components (3) P3D212 Rockford P3 12inch Subs (1) Very Loud Altima Coupe! Link to comment Share on other sites More sharing options...
slugdub Posted March 19, 2009 Report Share Posted March 19, 2009 What about all the HU nowadays that have full range of crossovers themselves? I know my Pioneer has Sub Settings 2> I believe and it has different frequencies you can control. Quote Link to comment Share on other sites More sharing options...
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