Recent content by DanDan

Hi Bass, Happy New Year. As the others said best place to ask about REW issues is at that REW Support Forum. REW Author John Mulcahy is there often. It can be difficult to get SSL and Mac OS and REW to all play together nicely. I would start with the Mic and follow the signal using say your...

Thanks Bernt. Thanks Billy. Yup, tweak to taste including the room and positions in it. Worth noting testing was at least a decade ago and I am approaching my 7th. I am beginning to ease off on the HF roll off......;-)

What an odd name...... Out loud it says Onerous.

I much prefer sealed speakers. Also even though Bass is presumed Omnidirectional, I think it would be worth turning your Subs in different directions. I know it is a completely different animal, but I find pointing my Kick Drum in different directions stimulates Room Modes very very differently.

I suggest blocking the Ports of the Subs. Try Cotton Wool for a soft block or even Cork or Rubber bungs for a full seal.

My Limp Bag reference was to suggest that the Bass would be of good Quality, i.e. similar throughout the car and without big Nulls and Peaks, due to the relatively weak or lack of LF reflections. I am presuming and accepting and approving even! that cars systems have boosted LF to compete with...

I read that most of that euphonic sound of tube gear is caused by the transformers.

Philip Newell is a leading Acoustician. He designed the Manor Mobile Recording Truck. He referred to vehicles as 'a limp bag' This was referring to the boundaries, which flex easily at LF, not reflecting it. So Bass sails out through the shell of a vehicle, as opposed to being contained by...

UP CORK John, Rory Gallagher, Me.....

Are you Measuring One Speaker or Both Together? https://www.irishacoustics.com/forum/measurement-and-control/acoustic-measurement-primer

I was wondering whether Audacity would record the UMIK mic bits without alteration and whether REW could work with files. I very much appreciate the quick answer. Sure, why not?

Are you referring to the Reflection at about 10mS? That reflection had to travel about 10 feet.

LOL, I look at my dorky self in the mirror when shaving every morning and I ask myself...... Am I An Artist? Sometimes when trying to find the main or only reflecting surface causing a particular null of interest I move over to the RTA. Zoom in to around the null and move the mic towards the...

Ah, good to know. John Mulcahy many confirm this, but I suspect that the SPL Meter in REW is probably very very good when used with any half decent sound card or interface. I guess if you use Line Input and feed it a precise RMS Voltage Level, you would then have a very precise RMS dBVolt Meter...

Thats a Sherlock Holmes job....... Move the mic. Modes do not change frequency but Reflection issues do. Typically if you get nearer to a reflecting surface which is causing a cancellation the frequency should rise. Speaking of reflecting surfaces....... Use a Mic Stand when Measuring and the...