Baffle rotation day...

[Jaxjax]

My directivity compromised Core 59's finally needed a flip in orbit to see if I can mellow out some problems. These come with the shown eye bolts that thread into metal inserts in the balle itself, then you slowly jack it out by threading slowly. Once seal it released it's an easy gig to rotate as it self index every 90 degrees. I've tried MTW, WTM or coarse TMW then finally horizonal with TM then woofer to the inside. ran new Dirac measurements & tried something I haven't. Instead of going with some Default Harman curve & running shelves up & down & went for straight line slope then went for about 120hz 2.5db bump or so & then backed everything down from 2.5k. My room is horrible & bad directivity.. I'll have to do something in REW etc.. to see what I really got. Shame on Dynaudio for being too lazy to do something that's actually capable of proper EQ without chasing tail in a bad room. The whole design for a full on pro treated room is stupid...
There better horizonal with funky listening height. I'm getting old..these only weight 54lbs but do it to many times off the floor & just not cool . I'm going try KEF Q11 meta is this sh..show room as soon as I get back on my feet. Those weight the same but I'll put em on sliders.

 

[JohnnyNG]

Nice work. I'm an SG man at heart. You need one with P-90s to spice things up.

 

[charlielaub]

Just a suggestion here, but you might consider putting the mid/tweeter end of the speaker towards the inside. As shown in the pic with the TV, the outside end of the speaker is rather close to the side wall. The reflection from the wall will cause interference that is bad for imaging etc.. This will be less of a problem when the mid and tweeter are farther away from the wall and at the same time you will get better boundary reinforcement of the woofer by its wall proximity.

 

[Jaxjax]

Nice work. I'm an SG man at heart. You need one with P-90s to spice things up.

Told my daughter to go pick a guitar out & after 5 minutes she reached for my p90 jr...ugggggg lol
that's were that went .
the 2 L & R of TV are 73-74 standards w/ the ebony boards, tarbacks.

 

[JohnnyNG]

Told my daughter to go pick a guitar out & after 5 minutes she reached for my p90 jr...ugggggg lol
that's were that went .
the 2 L & R of TV are 73-74 standards w/ the ebony boards, tarbacks.

Beauties!

 

[AnalogSteph]

I would assume the worst configuration for the Core 59s is MTW, as that puts the tweeter fairly close to the woofer surround. (TM)W horizontal may have its perks in that it keeps the midrange tighter horizontally. Vertical with some sort of slightly backwards-sloping baffle extensions may still be worth a shot. They will remain a wide dispersion speaker whatever you do, and as such not entirely ideal for this space. I would prefer ADAM S3Hs over these, although those are neither any cheaper nor any lighter. A set of KH310s with a KH750 sub would be the same price here, that's another not-terrible option.

 

[uwotm8]

I'll simply say that Dynaudio logo should be properly oriented to listener no matter which direction you turn it according to woofer/case itself, just consider MT circle as a classic 2-way speaker and its directivity is classic as well. No wonder that you preferred vertical orientation:

If you orient it horizontally, you'll just deal with "vertical" narrow directivity in horizontal plane; an the same time, wider horizontal directivety becomes vertical and you're getting much increased floor and ceiling reflections.

 

[mhardy6647]

This thread reminds me of two much earlier but not entirely unrelated issues in the realm of (in their day) high-performance loudspeaker drivers.
1) Lowther 'fullrange' drivers famously have a tendency for their suspensions to "sag", which can cause their voicecoils to drag. Routine Lowther maintenance includes periodic (e.g., annual) 180 degree rotation of the installation of a Lowther driver on its baffle to even things out.
2) Though far less intrinsically "saggy" the classic Altec woofers (e.g., 515B) can exhibit similar behavior -- plus the sticky black goo used to improve the flexibility (lower Fs) on the accordion surrounds thereof was often rather inelegantly applied at the factory and has a tendency to run in a very unattactive manner. Again, periodic 180 degree rotation is a common bit of routine maintenance for those (still!) redoubtable drivers.

Yeah, I know the relevance of this post hangs by a thread (no pun intended) -- but it still fits well from my warped perspective.

source: https://www.lowtherloudspeakers.com/lowther-pm-series