|
|
Post by 12elfthfloor on Jul 12, 2011 19:09:25 GMT -5
Hi, New addition to the emotiva line up, a pair of s/h 207.2 Kefs. still not set up yet hence the castors on the bottom but first thoughts are very happy. They are biwired from the XPA-1. Here is a quick shot before i had to shoot out the door for work. Attachments:
|
|
|
|
Post by tapornap113 on Jul 17, 2011 11:50:02 GMT -5
Those are much deeper than I thought. Let us know how they sound with your xpa-1's.
|
|
|
|
Post by 12elfthfloor on Jul 20, 2011 20:05:02 GMT -5
Fantastic with jazz and classical, but i played some 80's pet shop boys at them and they struggled with that. seamed to lack some mid range. base is wonderful and clean. my room however could be the cause.
i tried the xda1 direct that also made a difference.
yes they are big, i still get a shock!
|
|
|
|
Post by 12elfthfloor on Jul 20, 2011 20:08:28 GMT -5
Here is a question (stop laughing)? they are tri amp capable. what if i used my xpa 3s?  ? and 1ft large gauge speaker cables. any benefits? |
|
|
|
Post by roadrunner on Jul 21, 2011 1:53:42 GMT -5
Here is a question (stop laughing)? they are tri amp capable. what if i used my xpa 3s? ? and 1ft large gauge speaker cables. any benefits? There would be little to no benefit unless you also replaced the crossover network with an active external crossover. Passive bi/tri-wiring with multi-channel power amps, like the XPA-3, don't offer any performance advantages. It would be nice if performance advantages were that easily obtained, but that is just wishful thinking. You may as well wish upon a falling star for all the good it will do you. ;D |
|
|
|
Post by 12elfthfloor on Jul 21, 2011 2:59:37 GMT -5
so three xpa 1s then?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jul 21, 2011 4:00:11 GMT -5
If you had external crossovers yes  |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jul 21, 2011 5:11:37 GMT -5
Here is a question (stop laughing)? they are tri amp capable. what if i used my xpa 3s? ? and 1ft large gauge speaker cables. any benefits? There would be little to no benefit unless you also replaced the crossover network with an active external crossover. Passive bi/tri-wiring with multi-channel power amps, like the XPA-3, don't offer any performance advantages. It would be nice if performance advantages were that easily obtained, but that is just wishful thinking. You may as well wish upon a falling star for all the good it will do you. ;D +1 |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jul 21, 2011 10:01:26 GMT -5
I have always adored the KEF speakers. My first introduction to them was the fabled 105 Reference Series. Lord those were good-sounding speakers! I also really liked their 103.2s, probably the best-sounding bookshelf speakers I have heard. The midrange was to die for. Coupled with a decent subwoofer and you would have a VERY good-sounding fullrange system..
Your 207-based system must sound glorious with those big-ass amps driving them. I do loves me some KEF!
-RW-
|
|
hemster
Global Moderator 
Particle Manufacturer
...still listening... still watching
Posts: 51,951
|
Post by hemster on Jul 21, 2011 10:14:33 GMT -5
My uncle had KEF 105 Ref Series and they sounded great! Really great! I was secretly hoping he would pass them on to me when he retired and bought an RV to roam the continent. But that didn't happen :-(
To the OP, don't bother tri-amping or anything. Obviously with their depth, positioning is key and you may want to experiment different toe-in angles to see if you can find the optimal placement. I bet these are superb (based on the 105 experience). KEF makes a great product. Enjoy!
|
|
|
|
Post by tonymc on Jul 21, 2011 15:43:31 GMT -5
WOW. those are impressive to say the least. 8)
|
|
bootman
Emo VIPs 
Typing useless posts on internet forums....
Posts: 9,358
|
Post by bootman on Jul 21, 2011 16:41:13 GMT -5
Fantastic with jazz and classical, but i played some 80's pet shop boys at them and they struggled with that. seamed to lack some mid range. base is wonderful and clean. my room however could be the cause. i tried the xda1 direct that also made a difference. yes they are big, i still get a shock! They are going to need some break in time to sound their best. (most drivers are not broken in beforehand) |
|
|
|
Post by paintedklown on Jul 21, 2011 16:44:11 GMT -5
Those KEFs are simply awesome looking!  Now that, my friends, is a tower speaker. I LOVE huge speakers like those. There is no substitue for having a big pair............of speakers.  ;D |
|
|
|
Post by indyscammer on Jul 21, 2011 19:53:31 GMT -5
There is no replacement for displacement! ;D
|
|
|
|
Post by 12elfthfloor on Jul 21, 2011 20:28:21 GMT -5
Hi there,
Thank you for all the nice, helpful comments and advice. they really are something else, particularly to look at :-)
Before i bought them i did a as much reading as i could and hifi news stereophile audiogon and all recommend multiple amps or wiring to get the best out of them, so it is interesting about above comments on crossovers, i would like to know more.
Also cables add detract significantly, though a cursory read of the 'loudspeaker' book found that, and perhaps stating the obvious, the shorter the cable the less effect of the cable, with minimal difference below 2 mtrs. For my situation the cables could be as short as 50cm. given the price of cables and the price of the amps i was wondering if there could be a positive trade off.
|
|
|
|
Post by djoel on Jul 21, 2011 20:39:09 GMT -5
Fantastic with jazz and classical, but i played some 80's pet shop boys at them and they struggled with that. seamed to lack some mid range. base is wonderful and clean. my room however could be the cause. i tried the xda1 direct that also made a difference. yes they are big, i still get a shock! It could be the 80's music...  Every so often I player vinyl, or cd's from the 80's it sounds awful, soulless, some..Those where the dark ages for digital recording. Djoel |
|
|
|
Post by 12elfthfloor on Jul 23, 2011 19:08:26 GMT -5
I think i found the midrange problem, i realised the HF frequency Cap was in and it shifted the HF frq up .75db and my room it made it more pronounced. out now so it is at the 'flat' setting and its way better all round. Attachments:
|
|
|
|
Post by 12elfthfloor on Sept 13, 2011 1:07:18 GMT -5
Hi Kraemerkid and Theresa,
i just read in another post that Emotiva recommend Bi Amping their speakers which are also using passive crossovers. This being the case, and also recommendations of bi amping in hi fi news for these speakers, are you saying that its a no go in terms of gain to be had or other reasons technical?
these are somewhat soft in the mid range and it has been said that B-A will remedy this though before i go mad and buy another XPA 1, i thought i would seek further thoughts.
Thank you.
|
|
|
|
Post by jackfish on Sept 13, 2011 11:55:33 GMT -5
Here is a question (stop laughing)? they are tri amp capable. what if i used my xpa 3s? ? and 1ft large gauge speaker cables. any benefits? There would be little to no benefit unless you also replaced the crossover network with an active external crossover. Passive bi/tri-wiring with multi-channel power amps, like the XPA-3, don't offer any performance advantages. It would be nice if performance advantages were that easily obtained, but that is just wishful thinking. You may as well wish upon a falling star for all the good it will do you. ;D Well, he might as well wish. There seems to be a prevailing misconception among audio circles that so-called passive bi-amping has no benefit. This could not be farther from the truth. Speakers generally have a crossover which is customized to the drivers and enclosure involved and often the anticipated room. It is rare that a speaker crossover is simply a filter to pass frequencies between drivers. There is often other manipulation of the signal occurring to compensate for driver, enclosure and room relationships. So, bypassing the original crossover design with an electronic crossover is sure to make the loudspeaker sound different than originally intended. In addition, passive bi-amping does necessarily increase the power available to the loudspeakers, and this power is available and not significantly diminished (some say the internal crossover will burn off power as heat, not true). The impedances resulting from the crossover circuit alleviate the amplifier from even amplifying the unused frequencies so power is not wasted as some seem to think. So, if you want to try passive bi-amping or even tri-amping, go ahead and see for your self if there are audible differences. |
|
|
|
Post by 12elfthfloor on Sept 16, 2011 3:45:07 GMT -5
Thanks Jackfish,
your thoughts are in line with my reading/understanding.
Due to the cost incurred i was hoping for somebody's experience due to the cost factor. i may just give emotiva a call and ask too.
|
|
? and 1ft large gauge speaker cables.
;D
Every so often I player vinyl, or cd's from the 80's it sounds awful, soulless, some..Those where the dark ages for digital recording.
