Booming Tunes


Happy Holidays to all the Goners. This afternoons quandry: How do you reduce the bass output of a monitor speaker? My current monitor rolls at about 65-70 hz My room has a boom at about 60 hz (11x14) All the better moniters have extention to 40s to 50s. I have subs but I don't want to EQ the monitors with hi pass. The speakers are placed according to Cardas and have min boundry reinforcement and the speaker cable is as small as I think I can get Also put a sock on the port but that leaned out the mids too much. Thanks in advance for your suggestions. And may powdered sugar fall gently upon your ears this evening!
lewhite
Lewhite - very good question. I ended up with full range speakers but considered monitors and sub. Not only room has often nodes but designers of monitors tune bass reflex to stretch lows creating hump on first multiple of reflex frequency - usually around 80Hz. How to get rid of it? Some subs like JL allow to equalize sub/room using microphone plugged into sub but it cannot equalize hump (or room nodes) that is above cutoff. I've heard of bass traps (tubes) but never tried them.
Move the speakers well away from the walls. Alo lower the xover for the sub lower than the roll off of the monitors til they sound right.
You could insert a passive high pass filter (single high quality capacitor) between your preamp and amp with a roll off at 80 hz. Then tune your subwoofer accordingly.