spending my stimulus package $1200

[furrycute]

Oh wait, I spoke too soon.

I just looked at the frequency response plot of the Ascend Acoustics CBM-170 SE. The roll off also starts just before 100 Hz. Is this kind of roll off behavior normal for bookshelves using 6.5" drivers?

http://www.ascendacoustics.com/pages/products/speakers/cbm170/cbm170meas.html

 

[ScottWChicago]

Thank for all the imput

Would I be ok with the Axiom M22's $470?

I also like the Onkyo TX-SR606 $499 coming out soon.

The only thing I would wait on is the Sub. My Bose has a sub and I could use a couple of cubes for the other parts of the system.

 

[WmAx]

Oh wait, I spoke too soon.

I just looked at the frequency response plot of the Ascend Acoustics CBM-170 SE. The roll off also starts just before 100 Hz. Is this kind of roll off behavior normal for bookshelves using 6.5" drivers?

http://www.ascendacoustics.com/pages/products/speakers/cbm170/cbm170meas.html

'Normal' would be something to be defined by a statistical trend. How about you just leave it as the speaker(s) will have a LF extension of whatever is so desired by the engineer.

-Chris

 

[zumbo]

Would I be ok with the Axiom M22's $470?

I also like the Onkyo TX-SR606 $499 coming out soon.

The only thing I would wait on is the Sub. My Bose has a sub and I could use a couple of cubes for the other parts of the system.

LOL! Did you say use a Bose sub? Oh my. No offense, but that isn't a sub in that little black box. I don't think they even have a rca LFE input on them.

 

[AVRat]

Yes, the Axiom M22s are a viable option but you'll need to listen to them to be sure.

 

[Zetram]

If you haven't already check out Elemtal Design. You can get a decent 5.1 package w/ a nice sub (A3-300) for ~ $1000.

 

[WmAx]

But I am just curious, since this speaker uses a 6.5" driver, why does the low end roll off occur so early? Is this done on purpose to limit the excursion of the driver so as to limit distortion at low frequencies?

Sorry, I forgot to reply to this question.

Yes, it appears the port was specifically designed in this speaker to control excursion at LF. For example, it appears the port is tuned around 40-45Hz; a point below where it can effectively re-enforce the woofer output in this case; but a point where it damps cone motion significantly to increase power handling. One could even put in a new port(simple as drilling a hole in the back and screwing in a new tube port) that does re-enforce LF output. A F3 of 60-65Hz is probably realizable in this cabinet size; but I have not measured the T&S parameters of the woofer to verify.

-Chris

 

[furrycute]

Thanks for the explanation.