tag:blogger.com,1999:blog-7172143857693272648.post331865035687356381..comments2024-03-27T17:02:00.437-07:00Comments on Audio Musings by Sean Olive: Behind Harman's Testing LabDr. Sean Olivehttp://www.blogger.com/profile/17909033506833141612noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-7172143857693272648.post-34941297050869670542017-02-11T14:19:42.970-08:002017-02-11T14:19:42.970-08:00"The least preferred and least accurate louds..."The least preferred and least accurate loudspeaker (Loudspeaker D) generated the most variance in ratings among the different listening groups. This was explained by its highly directional behavior combined with its inconsistent frequency response as you move from on-axis to off-axis seating positions. This meant that listeners sitting off-axis heard a much different (and apparently better quality) sound than those listeners sitting on-axis."<br /><br />In other words, you tested the speaker in a way that had nothing to do with the way a serious listener would actually set it up.<br /><br />Wide, even dispersion is not a meaningful speaker requirement (except possibly in AV systems). To weight it so heavily -- especially when one of the speakers is electrostatic -- is arguably malicious.GrizzledGeezerhttps://www.blogger.com/profile/16548087338773381906noreply@blogger.comtag:blogger.com,1999:blog-7172143857693272648.post-3662565987258630662015-07-14T13:31:11.774-07:002015-07-14T13:31:11.774-07:00Hi Sean,
thanks for your work, it raises many que...Hi Sean,<br /><br />thanks for your work, it raises many questions and fights in my audiophile community, because it attacks on some long held beliefs :-)<br /><br />I'd be glad if you could briefly answer to some of following questions:<br /> - Is the quality of amplifiers important for comparing various loudspeakers?<br /> - What brand/type or amplifier class is being used in the testing lab?<br /> - Is the SNR ratio below audibility on all tested loudspeakers, or some more sensitive does emit hiss without music being played?<br /><br />I'm asking because many electrostatics loudspeakers present low-impedance capacitive load (<<2Ohm) to amplifier and most of amplifiers are not designed for such load. Also I've heard several (non-electrostatic) loudspeakers that did not play well with one amplifier, but much better with the other brand/type.<br /><br />Thanks.Anonymoushttps://www.blogger.com/profile/01424317783121703067noreply@blogger.comtag:blogger.com,1999:blog-7172143857693272648.post-56947465485029101672014-03-19T13:48:42.796-07:002014-03-19T13:48:42.796-07:00Hi,
ponder over the prospect of future investment....Hi,<br />ponder over the prospect of future investment. It may be in fact worth saving up for an extra 6 months to get a more expensive model that will last longer. Also do your research on brands, which are the most affordable and provide the best quality and durability. Buying a medium priced system <a href="http://12voltronics.com/electronics/all-car-audio/amplifiers/b2-detail" rel="nofollow">Like</a>that is more durable is a far better option than a cheap system that breaks down.<br /><br />Anonymoushttps://www.blogger.com/profile/02453783590482244595noreply@blogger.comtag:blogger.com,1999:blog-7172143857693272648.post-30553405126996759142013-07-01T13:04:29.092-07:002013-07-01T13:04:29.092-07:00I have been encouraging our marketing people to pu...I have been encouraging our marketing people to publish meaningful measurements but it has been slow coming. If you want comprehensive measurements you'll need to purchase a JBL Pro speaker like a LSR. For example, the M2 has a complete set of anechoic measurements showing excellent response on and off-axis<br />http://www.jblpro.com/products/recording&broadcast/M2/specs.html#.UdHgnhbnlyEDr. Sean Olivehttps://www.blogger.com/profile/17909033506833141612noreply@blogger.comtag:blogger.com,1999:blog-7172143857693272648.post-48493904147967685252013-06-17T05:22:08.774-07:002013-06-17T05:22:08.774-07:00Hi guys...
Speaking of JBL measurements... JBL&#...Hi guys... <br /><br />Speaking of JBL measurements... JBL's line of home loudspeakers with horns and large waveguides (Studio and Studio LS series) looks really interesting. Somebody seems to be paying attention to directivity in home speakers :-)<br /><br />I can't seem to find any complete and objective measurements of those systems, though. Just the usual subjective reviews which I usually skip entirely.<br /><br />Is there a chance of obtaining some "real" data on those speakers?<br /><br />Kind regards,<br />StephanCptKlotznoreply@blogger.comtag:blogger.com,1999:blog-7172143857693272648.post-59142628947836566522013-04-13T12:42:41.020-07:002013-04-13T12:42:41.020-07:00But aren't M2 measurements done with DSP inclu...But aren't M2 measurements done with DSP included? Also, on-axis would be nice. Vukinoreply@blogger.comtag:blogger.com,1999:blog-7172143857693272648.post-50753166442162089832013-04-12T15:38:52.595-07:002013-04-12T15:38:52.595-07:00Chris PearsonFebruary 6, 2013 at 4:29 PM
It's...Chris PearsonFebruary 6, 2013 at 4:29 PM<br /><br />It's hard to generalize because there are well-designed and poorly designed horns and waveguides. What is important is that the directivity of the horn matches the woofers at the point they cross-over so you don't get a sudden hole or bump in the sound power or Directivity index.<br /><br />Listeners seem to like speakers with wide dispersion because the strong lateral reflections they produce increases sense of spaciousness and image widening. However, this only works if you have rooms with side wall reflections. It's less important for multichannel systems where the surrounds produce the lateral reflections for you (assuming the recording was well made).<br /><br />If you want to see an example of a truly radical horn/waveguide check out the new JBL M2 Reference Monitor. The measurements and sound quality are better than anything I've seen or heard in a Professional product.<br />http://www.jblpro.com/products/recording&broadcast/M2/Tech.html#SpatialDr. Sean Olivehttps://www.blogger.com/profile/17909033506833141612noreply@blogger.comtag:blogger.com,1999:blog-7172143857693272648.post-41751747258676278052013-02-13T02:50:47.314-08:002013-02-13T02:50:47.314-08:00Hi Sean,
have you seen this: http://archimago.blo...Hi Sean,<br /><br />have you seen this: http://archimago.blogspot.com/<br />Maybe an addition to your June, 2010 blog theme...<br /><br />Best regards,<br />Vukivukihttp://drzlab.comnoreply@blogger.comtag:blogger.com,1999:blog-7172143857693272648.post-74308756859673942282013-02-06T16:29:41.484-08:002013-02-06T16:29:41.484-08:00Wow, just fascinating. How impressive to be able t...Wow, just fascinating. How impressive to be able to ultimately predict end-user preferences based on speaker output. Cheers Dr. Olive!Anonymoushttps://www.blogger.com/profile/00729094638628876450noreply@blogger.comtag:blogger.com,1999:blog-7172143857693272648.post-63196044790302876022013-01-16T15:09:01.821-08:002013-01-16T15:09:01.821-08:00Sean, that video is really, really cool. I am cur...Sean, that video is really, really cool. I am curious: How do listeners (and your testing) rank horn / waveguide speakers as compared to direct radiators? Is there a predictable preference there? Hitandrunhttps://www.blogger.com/profile/16859988518590554969noreply@blogger.com