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50Hz? No chance. Most floorstanders roll-off at around 80Hz.

96.247.104.165

In Reply to: RE: What's hot in bookshelf speaks these days? posted by xyrium on October 20, 2009 at 10:57:22

And 'mini monitors' will typically be too small for 6-7" drivers.
There are some exceptions in floorstanders of course, but with bookshelves, don't believe the specs. There's hardly anything out there that can properly reproduce 50Hz. Get a sub-woofer and a pair of PSB B25s given the music you like. Might not be a good match for your amp though - what amp do you have?

Follow Ups:

You should hear the speaker's this guy builds. - gtfsr 21:15:12 10/21/09 (1)
I sold a pair of Dynaudio 1.8MKII's for a pair of his JTM's.
- http://www.carolinaaudio.com/ (Open in New Window)
- RE: You should hear the speaker's this guy builds. - Bill the K 21:56:54 10/22/09 (0)
  Wonder how these compare with well known speakers like Joseph Audio and Merlin et al.?
  
  Enjoy
RE: 50Hz - carbonman 20:04:27 10/21/09 (0)
Lots of speakers will reproduce 50Hz and lower accurately. I own 2 pair of speakers that will easily do this.
What speakers are you referring to in your assertion? I think the National Research Council Anechoic Chamber will quite easily measure accurately below 50Hz. It's one of the premier acoustical measuring facilities in the world.
Cheers,

Graham

"Blue meters, big watts. This must be Heaven!"

Thorens TD126 Mk.III/Ortofon Super OM40, McIntosh MCD205, MDA700, C45, MC252, Joseph Audio RM33si Mk.II
RE: 50Hz? No chance. Most floorstanders roll-off at around 80Hz. - 3db 09:18:34 10/21/09 (6)
Incorrect assurtion. Most floor standers do 80HZ quite well. My PSB Image T45s go down to 40 Hz with authority and here are the curves measured at the NRC facilities to proove it.
- http://www.soundstagemagazine.com/measurements/speakers/psb_ (Open in New Window)
- RE: 50Hz? No chance. Most floorstanders roll-off at around 80Hz. - andy19191 15:18:07 10/21/09 (5)
  > My PSB Image T45s go down to 40 Hz with authority and here are the curves
  > measured at the NRC facilities to proove it.
  
  Prove it? What is the reverberation time at 40 Hz in a small anechoic chamber and what is done to account for this in your measurement curve?
  - What part of Anoechic don't you understand? - 3db 04:37:02 10/23/09 (1)
    What reverb? Its anoechic meaning nzereo, none, zip reverb of anykind. Reverb is reflection of sound.
    - The anechoic chamber does have to be of a certain size - keith_d 10:50:01 10/23/09 (0)
      To work to the lowest frequencies.
      
      Having said that, the other poster is confused in this and many other posts of his.
      
      As you indicate the NRC facilities are used by many Canadian and US manufacturers...because the facilities are excellent.
  - Reading comprehension problems?? - 3db 04:31:13 10/23/09 (0)
    Did you not click on the link? The measurements were taken at the NRC's facilities and not by me. Yeah I know your gobsmacked and you should be for over generalizing. Nice try though.."E" for effort
  - The NRC has a small anechoic chamber? - keith_d 20:20:22 10/21/09 (1)
    Do tell us more of what you know!
    - RE: The NRC has a small anechoic chamber? - 3db 04:33:19 10/23/09 (0)
      It would appear so by the different non Canadian speaker manufactures that use our facility.

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