B&W Matrix 801 Series II

The room is about 29'x29'x11'. I am not sure what I will put in front of them since I am under the impression they need a lot of power. My best pieces are a Mac c2300 and MC275. However, I have those running a pair of Klipschorns. I also have some Cornwalls. I am guessing the B&W is going to sound quite a bit different than the horn cabinets. A local repair shop has them is why I am interested. I heard them under far less than ideal conditions. I am on the fence about them and need some opinions of what to expect if I drag em home. In my area there is really no place to hear good audio equipment. If I acquire them I would then look for a suitable amp.

The room is about 29'x29'x11'.

I am under the impression they need a lot of power.

that is one really nice sized room.
if you look at my virtual system at the 801 heading - you will see a pic of the s3 in a room that is a backwards 7 shape.
They are in the top part of the 7 which is a space about 17 - 25.
You will also see a pic of them in another room in nearfield.
Two different objectives.
So it depends on your objectives - how close u will sit - spl levels, type of music.

In my experience they need "quality" power at just above 4 ohms for the amp to be able to control the woofers and still have what it takes for the mid/highs. if the amp gets taxed out on the low end you will experience brighter/harsher sounds. I base this is on my listening.
They are not forgiving in this regard at all .
this is the reason for needing the better quality gear in front - the better gear the better they will sound.
there are no shortcuts here.
They are not plug and play audiophile speakers.
They are like trying to tame a wild horse.
If you are willing to make a commitment and work with them they will reward you.
You will also need to get them off their castors and up in the air.

My best pieces are a Mac c2300 and MC275.

for your room this will depend on how close you will be sitting to the 801's.
25 feet or 10-15 feet ?

I get excellent results with both SS and Tube.
My tube amp Music Reference RM9 set at 4 ohms.
It is conservatively rated for 100 wpc but it is imo more - I think I have read 125 wpc soomewhere but not sure - and with KT88 tubes.

If this is more of a room where you want to fill the whole space I would go with SS and as much quality wattage as possible.
Doubling down from 8 ohms to 4 ohms.

A local repair shop has them is why I am interested.

this is actually a good thing imo.
Have a look at the woofers screws - have they been pulled before?

Have the shop take the woofers out - rest them on a table with the magnets down.
they have rubber surrounds so there will be no rot like other speakers that use foam or other material.
Manually extend the cones slowly and gently - fully with both hands upwards and then push them down gently.
this should be very smooth with no scratchy sounds at all.

The wires surrounding the voice coils are covered with a clear lacquer.
If the 801's have been abused - mostly meaning under powered,
the amplifier would have been clipping and sending heat to the coils.
this warps and actually melts the lacquer covering the coil wires which is needed for smooth travel.
if you hear a scratchy noise when moving the cones the coils need to be replaced -
Easily done at a speaker coning place.
But the price needs to be factored in.

Also have a look at the spiders. how taut are they.
If they are really loose and flabby it indicates previous owners caused alot of excessive woofer movement. there will be some movement but they shouldn't feel flabby loose.
this happens alot with vinyl guys that didn't use the bass alignment filter they came with. LOL.
they were designed by John Bowers to use a BAF to be able to achieve 20 hz. with their size cabinet, and also control subsonic frequencies which cause cone excursions and intermodulation distortion.

anyway
The woofers can be re-spider-ed with same compliant spiders and brand new voice coils put in for about $150.00 each.
this $300 needs to be factored in.

Sorry for the excessive brain dump and detail - hope this helps?

Do they come with the factory bass alignment filters or stands ?

Wow! You have some serious gear! Great looking room. Your 801s look better than the ones I am looking at which are an Oak finish I would guess. They kind of look like Early American furniture, really dated.

The room is a nice size because it is a studio connected to the house by a walkway but otherwise separate. (I am a musician so I have to have a studio to play in.) I live on 10 acres with my nearest neighbor being about 300 yards from me so I get quite loud, a lot. I have had a full PA system set up in there but it really wasn't clean enough so now my main system is the Mac stuff through the Khorns. I listen to a lot of acoustic Americana type stuff along with classic rock and blues. I try to keep one system loud enough so I can play a guitar through an amp and play along with the music. I do this a lot because that is how i figure out music to play it. I do also listen for extended periods at reasonable volumes, too.

I sit at least 15' from the speakers. I like to have two stereo set ups in the studio, one loud and the other doesn't matter as long as it sounds good. I like my main system but I feel the Khorns probably need to be rebuilt and there are probably better choices in speakers for me, although I don't currently know what they are. I have some Cornwalls I may try and rebuild if that is a better option than the 801s. I have always concentrated on my music gear so now, for a time, I want to get my stereo gear up to par and it is a field I am not that versed in nor do I have much opportunity to hear good equipment.

I have been planning to go SS in second system. I don't want it to be like the first. I will have the guy that is selling the speakers check them out for me if I decide I may want them. He is selling them on consignment and isn't too impressed with them but I know him well so he will help me all he can.

The speakers don't have the BAF.

Nothing excessive in your post. You would be surprised at what I learned reading it. Actually, I reread it several times. I am trying to learn and make some good decisions and it is hard when you don't know what you're doing. I appreciate all of the good information. Keep it coming>

Wemfan, you can find a lot of information about the speakers here, listed as "Matrix 801 S2"

http://bwgroupsupport.com/

After reading your post about playing "quite loud", I think it is necessary to consider speaker sensitivity, 801s (87db), Cornwalls (102db), Khorns (105db). A decrease of 3db in speaker sensitivity means that double the power is needed to maintain the same system capability. As an example, should it require just 5 watts for a dynamic peak on the Khorn, then that same dynamic peak would require 320 watts on the 801. Here is a good online calculator you can use for different senarios,

http://www.allegrosound.com/Power_AllegroSound.html

IMHO, the large room with distance from the speaker and playing "quite loud" 801's just might not be a good choice for this application. Playing loud on any speaker that is underpowered can easily result in blown tweeters.

Depending on the age of the Klipsch speakers, many people think the older original drivers were better than some of the newer ones, although crossovers may need attention. I have a friend that is a Klipsch fanatic. Do a google search for, KLIPSCH HERITAGE REFERENCE DATA - (V.2 - 9 May 2008) and download the pdf. This is complete data by serial number on all the Heritage series.
Here is a good source for rebuild/mod to your Klipsch speakers,

http://www.critesspeakers.com/

Also, I think Zu Audio speakers would work well for your application. A few years ago while working at an A/V retailer, a fellow employee told me that SRV's guitar sounded more realistic on his Zu Audio speakers than on the B&W 802D/Mcintosh MC402 at the store.

http://www.zuaudio.com/

They've certainly have stood the test of time, and they're the most well known high end speaker from the 80s. But, as others said, you need a lot of power, highest quality cables (bi wire,) high quality preamp and sources, bass alignment filter, and good stands. However, if you have carpet on concrete floor, listening to them with just the castors is not bad at all, imo.