Apocalypse
Standard Member
Owners of Avia will know that the disc contains low frequency sweeps that are labelled onscreen so you know what frequency you are hearing. Thanks to the helpfull sweep I now know where my low frequency sweep really peaks, it's from 55hz to 50hz. It can go from 70db to 88db during that drop of 5hz, the same happens if I do the sweep on the front mains (if set to large) so I'm assuming the problem is with room acoustics.
1, Can I cure/lessen the anomaly with things like more soft furnishings/bass traps?
2, If it's not room acoustics then what other possible cause could there be and resultant cure?
Incidently from 49Hz to 20Hz the db level is constant with maybe a 1db variation. The sweep was played at my normal listening volume of -15db on the Marantz AV9000 (which works out to about 75db on a spl), the readings were taken at the position my ears would normally be.
The gear :
Power Amp - Rotel RMB 1075
Pre Amp - Marantz AV9000
Sub - HGS18
Front Mains - Paradigm Reference Esprit (flat to 40hz), these are normally set to "Small" though anyway I just wanted to see if the bass anomaly was present in these as well as the sub.
Room furnishings are 50/50 re soft furnishings, there is a bed, a rug, curtains and a small rug under the sub. If needs be I can place a large curtain behind the front soundstage (if this will help)
Any advice will be appreciated or if anyone had similar problems but cured them please post away
Regards
Phil
1, Can I cure/lessen the anomaly with things like more soft furnishings/bass traps?
2, If it's not room acoustics then what other possible cause could there be and resultant cure?
Incidently from 49Hz to 20Hz the db level is constant with maybe a 1db variation. The sweep was played at my normal listening volume of -15db on the Marantz AV9000 (which works out to about 75db on a spl), the readings were taken at the position my ears would normally be.
The gear :
Power Amp - Rotel RMB 1075
Pre Amp - Marantz AV9000
Sub - HGS18
Front Mains - Paradigm Reference Esprit (flat to 40hz), these are normally set to "Small" though anyway I just wanted to see if the bass anomaly was present in these as well as the sub.
Room furnishings are 50/50 re soft furnishings, there is a bed, a rug, curtains and a small rug under the sub. If needs be I can place a large curtain behind the front soundstage (if this will help)
Any advice will be appreciated or if anyone had similar problems but cured them please post away
Regards
Phil