I have been comparing piano reproduction in my 988's with the reproduction in my Reference 3a MM de Capo's. The size of the instrument in the de Capo's is huge, more lifelike than in the Quads. In the Quads the instrument appears more distant and tiny, might be the description. Is this the standard Quad piano reproduction? Given the size of the esl panels I would expect a bigger image, or maybe there is something wrong.
The Quads seem to be working ok with both panels having the same output.
Thanks!
The Quads seem to be working ok with both panels having the same output.
Thanks!
In as much as you can't play any other place in your place, I think we just judge the correctness of a reproduced sound by certain conventions *as opposed to some abstract notion of verifiable accuracy). Like early oil paintings.
Since you can't record a piano worth a darn, the recording team makes some decisions about how they want their recording to sound in your house. Some recordings sound better to me on my system but the reverse for somebody else with their good system.
Ben
Since you can't record a piano worth a darn, the recording team makes some decisions about how they want their recording to sound in your house. Some recordings sound better to me on my system but the reverse for somebody else with their good system.
Ben
Have you thought of the possibility that your reference speakers are wired out of phase? This can make small instruments, such as the guitar, occupy the entire space betwen the speakers and then some. The latter remark meaning that the sound is percieved as coming from beyond the span of the speakers.
The better the speakers, the more obvious this antiphase behaviour is. Some of the early speakers I have owned I recall getting down on hands and knees trying to hear a null between the woofers, or the absence of a null to decide if I had the phase correct. With the Linkwitz LX521 speakers you would have to be deaf not to notice the difference! By flipping a phase reversal switch on my preamp a guitar goes from normal source size to the width of the listening room.
Keith
The better the speakers, the more obvious this antiphase behaviour is. Some of the early speakers I have owned I recall getting down on hands and knees trying to hear a null between the woofers, or the absence of a null to decide if I had the phase correct. With the Linkwitz LX521 speakers you would have to be deaf not to notice the difference! By flipping a phase reversal switch on my preamp a guitar goes from normal source size to the width of the listening room.
Keith
Hi,
The Quads represent a point source 40cm behind the panel,
so in theory they should do exactly what is being described.
The "vista" that is provided depends on the listening position,
noting that the acoustic plane is 40cm behind the speakers.
rgds, sreten.
Out of phase wiring of the Quads should be blindingly obvious.
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Hi,
with ESL, aka Dipoles You can ´steer´ the size of the image (or stage) by adjusting the reflected sound from the backside of the membrane.
The described effect can sometimes occur if there´s too much damping behind the speakers.
Sounds like too much direct sound and too less reflected sound.
Typically one doesn´t need much damping but should provide for very diffuse reflections with long delay times.
Under all circumstances prohibit direct reflections from the backside wall back through the speaker itself.
jauu
Calvin
with ESL, aka Dipoles You can ´steer´ the size of the image (or stage) by adjusting the reflected sound from the backside of the membrane.
The described effect can sometimes occur if there´s too much damping behind the speakers.
Sounds like too much direct sound and too less reflected sound.
Typically one doesn´t need much damping but should provide for very diffuse reflections with long delay times.
Under all circumstances prohibit direct reflections from the backside wall back through the speaker itself.
jauu
Calvin
Compare the thread here to the earlier one that WrineX and I contributed to
same original post, but our replies now gone ??? from the same question,
or did Manolo 47 double post ?
http://www.diyaudio.com/forums/planars-exotics/276322-quad-988-piano-reproduction.html#post4370733
same original post, but our replies now gone ??? from the same question,
or did Manolo 47 double post ?
http://www.diyaudio.com/forums/planars-exotics/276322-quad-988-piano-reproduction.html#post4370733
Sorry for the double post. The dac I use is the 47 Lab and it inverts phase. So phase was inadverntly inverted from making some previous cable swapping. It looks -like it has been mentioned in this thread- that the Quad is very sensitive to this, much more than the deCapo.
Hi,
don´t worry about the ´absolute´ phase connection, as You never know about the phase of the recorded material and it´s most certainly not audible anyway.
Where phase matters -measurably and audibly- is for the reflected backside sounds.
The overall amlitude response depends on the phase angle between and the amplitudes of the direct radiated and the reflected sound.
Unfortunately the reviewer of TNT obviously didn´t know about that, as he lost not a single word about it in his ´setup´ talk.
Placing a ESL just a certain distance from a reflecting wall, but otherwise not thinking about what and how the wall reflects, is simply not a sufficient setup recommendation.
Manolo, You didn´t reply on Keith´s post asking if maybe weren´t an issue of the Quads but the Reference Da Capo´s possibly connected out of phase.
jauu
Calvin
don´t worry about the ´absolute´ phase connection, as You never know about the phase of the recorded material and it´s most certainly not audible anyway.
Where phase matters -measurably and audibly- is for the reflected backside sounds.
The overall amlitude response depends on the phase angle between and the amplitudes of the direct radiated and the reflected sound.
Unfortunately the reviewer of TNT obviously didn´t know about that, as he lost not a single word about it in his ´setup´ talk.
Placing a ESL just a certain distance from a reflecting wall, but otherwise not thinking about what and how the wall reflects, is simply not a sufficient setup recommendation.
Manolo, You didn´t reply on Keith´s post asking if maybe weren´t an issue of the Quads but the Reference Da Capo´s possibly connected out of phase.
jauu
Calvin
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