[jackman]

Hi,
I'm thinking about getting a passive radiator (the one from GR Research looks cool) and adding it to my sealed subwoofer to get more low-end output.  The numbers look good on paper and I can easily add one to the box but I was wondering if it would be more difficult to integrate with my ported Ellis 1801's, versus a sealed design.  

I believe there are several popular subs out there with passive radiators.  I have always considered PR designs to be in between sealed and ported (tigheter than ported but not as tight as sealed).  What do I gain by going PR?  What do I give up?

Thanks!

Jack

[Red Dragon Audio]

Check out our discussion of the GR design over here:
http://www.audiocircle.com/index.php?topic=11564&start=10

Read what Danny says at the bottom of that page.  

Of course, you are using a different main driver so it will sound different but it seems Danny thinks it can be tuned to deliver all the qualities I was looking for.  Hope this helps.

[zybar]

Hi,
I'm thinking about getting a passive radiator (the one from GR Research looks cool) and adding it to my sealed subwoofer to get more low-end output.  The numbers look good on paper and I can easily add one to the box but I was wondering if it would be more difficult to integrate with my ported Ellis 1801's, versus a sealed design.  

I believe there are several popular subs out there with passive radiators.  I have always considered PR designs to be in between sealed and ported (tigheter than ported ...

I can't get into the tecnical details of passive radiator vs. sealed, but I can tell you that I haven't had an difficulty blending me dual VMPS Larger subs with my VMPS RM 40's.  I only use the subs for HT duty, but blending them properly is still important to me.  Like any sub, it takes time and patience to get it done right.  But once you lock it in, the sound is more than enough reward.

George

[rosconey]

might be tough -
as you know integration works best when done with force by national guardsman.your local guard might be in irag and wont be able to help
 


is the gr passive adjustable like my vmps large ? if so its easy

[nathanm]

The acoustic problems of peaks and nulls in the room itself will probably be more bothersome than the particular design of subwoofer used.  Those problems will exist regardless of the sub being sealed or ported most likely.

[jackman]

Just ordered one.  This means I will have to wait to finish painting my sub.  I'll just primer it for now and finish painting after I get the PR.  Will keep everyone posted.

Thanks for all of the advice.

J