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  Time coherence - how important and what speakers?
I have been reading alot about time coherence in speakers. I believe that the Vandersteens and Josephs are time coherent.

My questions are: Do think this is an important issue?
What speakers are time coherent?

Thanks.

Richard Bischoff
Rbischoff  (System | Threads | Answers | This Thread)

09-14-02
  Responses (101-150 of 155)
Click title to read one, or click date to read all below it.

02-26-03   Yeah, the original ohm had a lot going for it. magazines rep ...   gma@

02-26-03   Phasecorrect- if you use pink noise or mls or swept sine wav ...   gma@

02-26-03   Eldartford- have a look at this link- let it load all its ph ...   gma@

02-27-03   Roy...thanks for the response....maybe i should rephrase my ...   Phasecorrect

02-27-03   Just because it can do a square wave does not guarantee it w ...   gma@

02-28-03   Can a ported or transmission line design be truly time/phase ...   Unsound

03-01-03   A ported or transmission line speaker can never be time cohe ...   gma@

03-01-03   Roy..according to your "definition"...meadowlark,t ...   Phasecorrect

03-01-03   Vandersteens are definitely not t-lines, marketing hype asid ...   Karls

03-01-03   Karls, i think the issue with transmission lines in this thr ...   Unsound

03-01-03   There is no port on the vandersteen 2,3 and 5 series speaker ...   Bigtee

03-01-03   Karls, phasecorrect, no speaker is without time delay in its ...   gma@

03-01-03   Bigtree, vandersteen 2's and 3's have an unusual arrangement ...   gma@

03-01-03   Roy, i have not investigated t-lines thoroughly enough to ha ...   Karls

03-02-03: Bigtee
Roy, I certainly agree that all reflections are not removed from the Vandersteen's minimal baffle designs. However, it is much better to attempt a solution that helps minimize these reflections than the way a lot of designers have basically ignored them using a large area baffle. When you look at the front of a Vandersteen, you see very, very little cabinet structure around the drivers. I think Vandersteen has attempted to address a lot of issues with sound engineering in a very reasonably priced product.
I was actually attempting to respond to Karls statement that the Vandersteen's were ported designs which they are not with the exception of the 1 series which is stated to be a transmision line of sorts.
I did know that the woofer arrangement was unique in its implementation. However, again, I was responding to Karls since the driver(s) are active, not passive, although, as you stated, the front woofer will move the back woofer, etc since they share the same sealed chamber.
I have certainly enjoyed reading your posts. They are very informative. Its nice to cut through the hype and get to the point.

Bigtee  (Threads | Answers | This Thread)


03-01-03   Roy...in your own designs...how do you approach low frequenc ...   Phasecorrect

03-02-03   Hi karls- much of what you say i agree with. and to answer y ...   gma@

03-02-03   If there were a such thing as the best way to design a speak ...   Gmood1

03-02-03   And your point would be... not to discuss the many approachs ...   gma@

03-02-03   Since ports are being picked on...i think there should be so ...   Phasecorrect

03-02-03   Roy, my post wasn't towards you!i try not to generalize the ...   Gmood1

03-02-03   Roy, thanks for the long response. here are a couple links t ...   Karls

03-02-03   Gmood1- i am glad to know you do not generalize based upon t ...   gma@

05-22-03   Roy, whats up with the green mountain audio website???   Dolphin

05-27-03   There's been no spare time to finish the last few pages (for ...   Royj

05-29-03   New speakers? are you designing or upgrading any new booksh ...   Dr150

06-02-03   The europa was upgraded many months ago, and i have been wor ...   Royj

07-13-03   Nsm, role audio, and maybe jordan single driver speakers are ...   Cdc

07-13-03   Cdc, nsm is blowing smoke up your ... there is no way on hea ...   Karls

07-13-03   I've said straight out what i find wrong with the sound of h ...   Royj

07-15-03   So i guess i should pass over the nsm because the drivers ar ...   Cdc

07-15-03   Cdc, i'd listen and decide. there are numerous people on her ...   Twl

07-15-03   Royj, the link you provided is for ads about surfing the web ...   Albertporter

07-15-03   Http://svt.se/hogafflahage/hogafflahage_site/kor/hestekor.sw ...   Gsselling

07-16-03   Cdc, if you can listen to a jordan-driver based system- do s ...   Royj

07-16-03   Roy, i have read the entire thread again (whew), and i have ...   Dolphin

07-16-03   Dolphin ... add john bau (spica) to that list.   Seandtaylor99

07-17-03   Dolphin..also add jim winey of maggie fame...hey...have to h ...   Phasecorrect

07-18-03   Hello, perhaps this is somewhat of an off topic question, co ...   Vettemanbc

07-19-03   4th order lr does have the benefits described. it should be ...   Karls

07-22-03   Dolphin, you askedsee below... can a 1st order crossover ...   Royj

07-22-03   Roy, i'd like to commend you for a continued good show of th ...   Twl

07-22-03   Thanks roy ... i was not trying to suggest that spicas are t ...   Seandtaylor99

07-22-03   Sean...take the spicas...increase their legendary imaging,so ...   Phasecorrect

07-24-03   Roy, i am not exactly sure if my question is related to this ...   Dolphin

07-25-03   Lack of phase shift is one criteria i know helps a lot- for ...   Royj

07-25-03   Dolphin...bass at low volumes is another key area...most peo ...   Phasecorrect

07-26-03   Now, as opposed to then, i'd have to guess that the executio ...   Stehno

07-25-03   Good point. roy   Royj

07-26-03   Roy, will you please tell us what the impedance ranges, sens ...   Unsound

07-26-03   Those are listed at the bottom of our temporary home page at ...   Royj

09-08-03   Roy is a marketing guru as well as speaker designer. some ma ...   Dawgbyte

09-09-03   Well, roy could use some dealers so we could hear before we ...   Cdc

09-09-03   A couple of months ago i went to a local audiophile retailer ...   Dawgbyte

09-09-03   We have several dozen dealers- a list is available. admitted ...   Royj


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