Home Theater Forum and Systems banner


  1. my new measurement with mic, headache on dip at 30hz, any comments?

    REW Forum
    now i got chance to use professional measurement mic. and last night i spent several hours in struggling for making new measurement, but the result makes me feel so headache about the dip at 30HZ. see attached data. seek for comments on if i am making a right measurement, or suggestions to me...
  2. Why such a huge dip at 30hz and below?

    REW Forum
    Horrible dip below 30hz and not sure why...Ive got early reflection panels, a ceiling cloud (about 10ft overhead...hanging 1ft from ceiling), and 3" corner traps. Do I have too much bass trapping? My HS80Ms are about 1' away from the back wall. If I remember correctly, when I first started using...
  3. Can't get Bass below 30hz (Suggestions please)

    Subwoofer Amps | High Pass Filters
    Hi All, I have just built a ported sub woofer & can't seem to get any frequency below 30 hz. The sub woofer driver is a Mach audio IXL 18. The cabinet was designed with the help of gperkins_1973 & is tuned to 15hz. There is a build thread (I tried to insert the link but became to long) The...
  4. Low frequency absorption in a closet/pantry

    Home Audio Acoustics
    Hi, I have been researching how to reduce my decay time of the low frequencies( 100hz down to 30hz) in my room. I know these frequencies are VERY hard to tame because of size and all that. I have read master handbook of acoustics etc etc, plenty of mfg's education articles and videos, but...
  5. How do I setup the EP1500's 30hz Highpass into Winisd?

    DIY Subwoofers - General Discussion
    I was wondering how I would go about adding the 30hz high pass filter from my Behringer EP1500 amp into winisd. I know that you go th the EQ/filter tab but Im not sure which option to set. For the filter type I know I pick high pass but Im not sure about the subtype (Im guessing it should be...