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ADVENT. To double or not . .

Raphael said:
Share the wealth and send a pair my way!!!!!!!
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Mine are all masonites. :D

I realize you are being jocular but, you should have matched sets (that is, two pair originals or two pair New Advents) because there are differences in the drivers. The tweeters are flush mounted in the New Advents and stick out about 1/2" in the originals. The wooger cones are set back farther from the front of the frame in the New Advents.

You could compensate by having the new ones slightly farther forward in the room (1/2"?) and it would probably be OK. But it's probably just as easy finding New Advents as originals.

Doug
 
Agree. No stands. Maybe for a single pair (although I found tilting better) but not for stacks.

Doug
 
Okay, so let me get this right.....
These things should be wired in series, not parallel? This seems counter intuitive, correct me if i'm wrong but won't the phase be messed up?

Just wondering cause a friends getting a second set of advents for his 21st birthday party this sat. We were trying to decide what amp would be better for the party, his vintage pioneer reciever (slightly less powerful) which has A+B in parallel, or my early 90's pioneer reciever which has A+B in series. Couple a weeks ago we decided my amp worked better with one stack cause its more powerful and reduces clipping to unnoticeable leves at higher volumes. Just wondering what to do for this party.
 
systemerror909 said:
Okay, so let me get this right.....
These things should be wired in series, not parallel? This seems counter intuitive, correct me if i'm wrong but won't the phase be messed up?
Click to expand...

Please expand on this concern.

systemerror909 said:
Just wondering cause a friends getting a second set of advents for his 21st birthday party this sat. We were trying to decide what amp would be better for the party, his vintage pioneer reciever (slightly less powerful) which has A+B in parallel, or my early 90's pioneer reciever which has A+B in series. Couple a weeks ago we decided my amp worked better with one stack cause its more powerful and reduces clipping to unnoticeable leves at higher volumes. Just wondering what to do for this party.
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When you had the stacks connected to your source were they connected to A & B or did you use A only and series the connections at the speakers--or did you parrallel them from A or use a block at the speakers?

Hard to respond without the facts . . but definitely serialize if you have clipping at volume. I would series Advents anyway if stacked (they provide an aureally rich change from pairs)--if unstacked and you have them distributed for large parties--go for parrallelling and more immediate volume (if your amp will allow).
 
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In getting my Advent/1 and Advent stack to sound right I realized that not only must each pair of speakers (top pair and bottom pair) be in phase but the two pairs must be in phase as well. It's possible to get one pair out of phase with the other, in other words.

Dang, I hope I'm making sense.

And, I just A + B them. My SX-1010 and 2265B both seem to have handled it fine. Haven't tried it with my 8080db yet.
 
Okay, yeah I guess my concern is that my amp is clearly the more powerful one so ideally we would use it if the playback is only on one set of advents.

My questions is that, with each speaker having 8-10 feet of wire attached to it, won't there be a phase delay for the second set if wired in series (as my amp does when utilizing both A and B). I've heard that for surround sound, the front speaker wires should be as long as the rears to avoid this phase shift. Wired in series, won't there be a lag in the second speaker as the signal has to travel through the first and then an additional 8-10 feet?
 
After years of enjoyment listening to a single pair of original Advents that I purchased new in 1972, I finally purchased a 2nd pair on Ebay. I built some little 4 inch speaker stands (untilted) to get the 2 tweeters centered on my ears (when seated). I connected the 4 Advents in parallel to an old Phase Linear 700 amp, as it will easily handle the 4 ohm loads. I am still grinning from ear to ear! Sounds much much better than it did before. I highly recommend this setup. Next thing to do is the cap upgrade.
I now have 7 speakers in the room (4 Advents for the front channels, a center channel and 2 rear channels for the surrond sound) plus 8 more under the floor for my Infinite Baffle subwoofer. http://i40.photobucket.com/albums/e202/IsTheFloorMoving/Infinite Baffle Subwoofer/4449a96a.jpg I keep thinking that I am finished but then "life is a journey not a destination".
 
After years of enjoyment listening to a single pair of original Advents that I purchased new in 1972, I finally purchased a 2nd pair on Ebay. I built some little 4 inch speaker stands (untilted) to get the 2 tweeters centered on my ears (when seated). I connected the 4 Advents in parallel to an old Phase Linear 700 amp, as it will easily handle the 4 ohm loads. I am still grinning from ear to ear! Sounds much much better than it did before. I highly recommend this setup. Next thing to do is the cap upgrade.
I now have 7 speakers in the room (4 Advents for the front channels, a center channel and 2 rear channels for the surrond sound) plus 8 more under the floor for my Infinite Baffle subwoofer. http://i40.photobucket.com/albums/e202/IsTheFloorMoving/Infinite Baffle Subwoofer/4449a96a.jpg I keep thinking that I am finished but then "life is a journey not a destination".
 
IsTheFloorMovin said:
After years of enjoyment listening to a single pair of original Advents that I purchased new in 1972, I finally purchased a 2nd pair on Ebay. I built some little 4 inch speaker stands (untilted) to get the 2 tweeters centered on my ears (when seated). I connected the 4 Advents in parallel to an old Phase Linear 700 amp, as it will easily handle the 4 ohm loads. I am still grinning from ear to ear! Sounds much much better than it did before. I highly recommend this setup. Next thing to do is the cap upgrade.
I now have 7 speakers in the room (4 Advents for the front channels, a center channel and 2 rear channels for the surrond sound) plus 8 more under the floor for my Infinite Baffle subwoofer. http://i40.photobucket.com/albums/e202/IsTheFloorMoving/Infinite Baffle Subwoofer/4449a96a.jpg I keep thinking that I am finished but then "life is a journey not a destination".
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Yeah, I think you mentioned that :D
 
systemerror909 said:
Okay, yeah I guess my concern is that my amp is clearly the more powerful one so ideally we would use it if the playback is only on one set of advents.

My questions is that, with each speaker having 8-10 feet of wire attached to it, won't there be a phase delay for the second set if wired in series (as my amp does when utilizing both A and B). I've heard that for surround sound, the front speaker wires should be as long as the rears to avoid this phase shift. Wired in series, won't there be a lag in the second speaker as the signal has to travel through the first and then an additional 8-10 feet?
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Don't use the 'B' to connect the second set! The way to do an effective series is to jump them at the speaker terminals--in this way you only need one set of wires from the source at 'A'--reduce your wire related resistance by half--and get no discernable phase effect at the speakers because the jumpers are only a few feet long. If your mixing speakers you should also try parallelling them to compare against a series connection and see if they sound better (they might sound horrible in series and great in parallel). I suggest series connections as a 'must try' for any speakers but particularly for identical speakers. To connect in series you simply connect (+) from source to speaker A (+), jumper from speaker A (-) to speaker B (+), then connect speaker B (-) to source A (-).
 
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I'd still want a short stand with spikes under the stack and then Blu-Tack between the speakers. That should give optimal coupling and raise the tweeters.

If I had a tube amp, I'd definitely put them in series and use the 16 ohm tap on the amp. That way you have less resistance loss in the cables and would minize risk of transformer core saturation since you are playing to the tube amp's strength as a voltage source.

With a transitor amp, it would depend on the amp's performance at low impedance. A new Krell (hypothetically) is renowned as a high current amp and parallel operation (which lowers the effective impedance) draws more amps.

An older vintage amp with no 4 ohm rating might also be better in series since its 8 ohm rating might be limited by either rail voltage of current limits - hard to know. I'd try both but the series connection would require care since it might go into protection from overcurrent.

A parallel connection off one of the amp's speaker terminal sets to both sets of speakers should be the same as independent connections to A and B speaker terminals.

Anyone with recap recommendations?
 
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I have had extensive experience with stacking Advents and other speakers. I always wire my stacks in parallel because with series wiring the pairs will not be in phase with each other. I was surprised to note the recommendation above for a series connection. I have never actially tried it.

Perhaps the best results are with a pair of masonite ring large Advents on the bottom and a pair of New Advent larges on top. They sit on stands that raise them up about 4" and angle them back a couple of degrees. The loss of stability is worth it for the gain in sound. When I tried them square on the floor the bass was too much.

On my tube system I have a pair of Polk 4.6 Monitors atop a pair of Advent larges. I love these Polks (the only speakers I have ever had that weren't acoustic suspension), especially the imaging. The tweets are smooth silver coil domes with great dispersion but the speaker lacks bass. I was thinking I needed to get a subwoofer, then I thought I'd try using them along with the Advents, and the results were excellent. The Polks are more efficient, which compensates for the duplicated high frequency range as well as some of the coupling that would exaggerate the bass (plus they are on carpet).

I tried AR4s and AR7s atop the Adventsm didn't care for either. I havent tried the AR7s atop the AR4s but plan to. Actually I want to try the AR4s and AR7s in a 4-channel arrangement.
 
daveshel said:
I have had extensive experience with stacking Advents and other speakers. I always wire my stacks in parallel because with series wiring the pairs will not be in phase with each other. I was surprised to note the recommendation above for a series connection. I have never actially tried it.
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You must find and sync the wave moments for each speaker by sliding the top speaker back or forth (depending on which you have connected first in series). This adjustment is only a matter of about an inch (often less) and since it is only an average due to the difference along the frequency spectrum it does take a little back and forth to get right--but when you do . . your amp will be happy.
 
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