[WC]

https://hometheaterhifi.com/editorial/oped/are-open-baffle-speakers-a-flawed-technology/

Kinda laughable.

[FullRangeMan]

This site are dedicated to movies, what means multi-channel sound far away from hi-end music.

[Rocket_Ronny]

Of course they are highly flawed. Just like their owners. 

[Shakeydeal]

JLM will be along shortly to straighten you heathens out...........

Shakey

[AJinFLA]

Though open-baffle-style speakers, including bipolar...

Kinda laughable.

Yep. But rather consistent with "reviewer" technical literacy.

cheers,

AJ

[JLM]

JLM will be along shortly to straighten you heathens out...........

Shakey

Must resist the urge to post.   

[planet10]

All speakers are flawed -- pick your compromises. Room, taste, WAF, support kit all play a role as well.

I built a number of OBs. and i personally, found that they all had a flaw i did not like. And it convinced me that many who said they would never goback to a box have never heard a well built box (so many out there are poor (probably most of them).

dave

[planet10]

Just started reading the link.

Quesion #1: how do you build a bipole OB? OBs by their very nature are dipoles at least at lower frequencies. Most tweeters would need to have a companion firing backwards to be dipole (and they are not OB, tweeters tend to have their own boxes built in (dipole ribbond like the big Heil are true dipoles).

dave

dave

[JohnR]

Most tweeters would need to have a companion firing backwards to be dipole

There's a list of dipole tweeters here: https://www.audiocircle.com/index.php?topic=149613.0

[grsimmon]

https://hometheaterhifi.com/editorial/oped/are-open-baffle-speakers-a-flawed-technology/

Kinda laughable.

Why? Please explain.

[WC]

Why? Please explain.

The author is writing it from the perspective that box speakers are the ideal speaker design. Most of the issues he brings up with regards to excitation of room modes are actually worse with box speakers. He is just showing his bias.

[RDavidson]

What was the flaw?

+1 Exactly. For the record, I think Hometheaterhifi is actually a pretty good site and I like that they often support their reviews with measurements. I'm certainly not a measurements-are-king guy, but they're helpful for understanding both the subjective and objective performance of the gear being tested. Anyway, this clearly isn't their best work and I'm not even sure what the point of the article is. Perfect speakers don't exist, so why kick sand in the baffle of one type of speaker versus any other? Makes zero sense.

[Shakeydeal]

so why kick sand in the baffle of one type of speaker versus any other?

[eso]

I've only briefly played with OB speakers, and admittedly not with optimal drivers.

I would like to have a listen to what is considered an excellent OB set up, but I'm not sure where that would be.

A few years back I set up my Urei 813B drivers in large open baffles in my old shop. I was unimpressed. I'm not sure how one would get decent bass out of such a set up.

[Shakeydeal]

I would like to have a listen to what is considered an excellent OB set up, but I'm not sure where that would be.

Come to Virginia........

[eso]

Come to Virginia........

What part? I've got Family in Vienna, DC suburbs.

[Shakeydeal]

You have to come farther south than that, lol. Think Liberty University........

[Tyson]

I've only briefly played with OB speakers, and admittedly not with optimal drivers.

I would like to have a listen to what is considered an excellent OB set up, but I'm not sure where that would be.

A few years back I set up my Urei 813B drivers in large open baffles in my old shop. I was unimpressed. I'm not sure how one would get decent bass out of such a set up.

Come to Denver.  I have the GR Research Super 7 speakers with powered OB servo subs, 350 watts per side, dual 12" woofers (4 total), goes flat to 20 hz with power and higher up the bass will punch you in the chest. 

[FullRangeMan]

The author is writing it from the perspective that box speakers are the ideal speaker design. Most of the issues he brings up with regards to excitation of room modes are actually worse with box speakers. He is just showing his bias.

You hit the point. Unfortunately few people in this planet know it.

Your comment is very correct, do you could post it there?
https://hometheaterhifi.com/editorial/oped/are-open-baffle-speakers-a-flawed-technology/

[gils]

I've only briefly played with OB speakers, and admittedly not with optimal drivers.

I would like to have a listen to what is considered an excellent OB set up, but I'm not sure where that would be.

A few years back I set up my Urei 813B drivers in large open baffles in my old shop. I was unimpressed. I'm not sure how one would get decent bass out of such a set up.

Bonjour,

ou en France !!



j'ai encore changé de système mais j'ai gardé le sub OB

je garde à l'esprit que l'enceinte close est meilleur pour "le multi usage", le baffle ouvert est très dépendant de son environnement, le RT du local d'écoute devra être traité pour une bonne restitution qui sera plus exigeante qu'une simple enceinte close.

Derrière mon sub, j'ai rajouté 50 cm de laine de roche pour améliorer le RT qui est de 700 ms à 50 Hz, la distorsion est de 1 % à 20 Hz pour 100 db (2 m, point d'écoute)
Je suis passé en HR (99 db) depuis et j'ai de bon résultat avec un ampli 2x8 W Monstre de Jean Hiraga sur les enceintes HR , le sub est branché sur un ampli class D coupure à 44 Hz pente 24 db

I changed the system again but I kept the OB sub

I keep in mind that the closed enclosure is better for "multi-use", the open cabinet is very dependent on its environment, the RT of the listening room will have to be treated for a good restitution which will be more demanding than a simple closed enclosure.

Behind my sub, I added 50 cm of rock wool to improve the RT which is 700 ms at 50 Hz, the distortion is 1% at 20 Hz for 100 db (2 m, listening point)
I went to HR (99 db) since and I have good results with a 2x8 W Monster amplifier by Jean Hiraga on the HR speakers, the sub is connected to a class D amp cut at 44 Hz slope 24 db








Le résultat est très bon à l'écoute.

The result is very good when listening.

  Cdt. Gilles