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Post by jmason625 on Feb 21, 2012 15:50:40 GMT -5
Has anyone bi-amped one speaker with a upa-2? I was thinking about doing my center channel that way. thanks in advance.
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Post by jackfish on Feb 21, 2012 22:12:08 GMT -5
Why not try it? Can't hurt anything.
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Post by roadrunner on Feb 21, 2012 22:48:12 GMT -5
It probably won't improve anything but it won't hurt to try it to see. Just don't be disappointed if it does not work the way you expect.
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Post by jmason625 on Feb 22, 2012 10:37:53 GMT -5
I would think by feeding left channel from preamp, going out of left and into right channel with same signal, it would act as 250w amp? Wire tweeter and mid with left and woofer with right in bi amp fashion, I see no downside.
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Post by roadrunner on Feb 22, 2012 14:10:14 GMT -5
What are you going to be using for the crossover network? Do you have an active external crossover? Will you be removing the built-in crossover from the speakers? You need to re-think how you are going to accomplish what you are attempting to do. I am not sure I follow your wiring scheme... be careful you don't damage your amp, pre-amp, or speaker.
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Post by Golden Ear on Feb 22, 2012 14:32:35 GMT -5
Has anyone bi-amped one speaker with a upa-2? I was thinking about doing my center channel that way. thanks in advance. Bi-amping would not do any good since the passive crossover are in placed with your speaker. Unless you remove them and have an active crossover from your electronics then bi-amping make sense.
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Post by jmason625 on Feb 22, 2012 14:58:34 GMT -5
Thanks for your input, I think it is time to upgrade if I want more power.
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Post by jackfish on Feb 22, 2012 16:27:55 GMT -5
Has anyone bi-amped one speaker with a upa-2? I was thinking about doing my center channel that way. thanks in advance. Bi-amping would not do any good since the passive crossover are in placed with your speaker. Unless you remove them and have an active crossover from your electronics then bi-amping make sense. Absolutely false! Passive bi-amping has advantages and active bi-amping definitely has its pitfalls which so many wish to ignore or minimize. jmason625, you would split the center channel signal at the receiver or prepro to the right and left channels of the UPA-2. Then one UPA-2 output channel (right or left) would be connected to the high section of the center channel speaker and the other output channel to the low section. Pretty simple, actually.
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Deleted
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Post by Deleted on Feb 22, 2012 17:24:09 GMT -5
Bi-amping would not do any good since the passive crossover are in placed with your speaker. Unless you remove them and have an active crossover from your electronics then bi-amping make sense. Absolutely false! Passive bi-amping has advantages and active bi-amping definitely has its pitfalls which so many wish to ignore or minimize. jmason625, you would split the center channel signal at the receiver or prepro to the right and left channels of the UPA-2. Then one UPA-2 output channel (right or left) would be connected to the high section of the center channel speaker and the other output channel to the low section. Pretty simple, actually. passive bi-amping does absolutely nothing. Splitting your channels on 1 amp will do nothing because 1. you are getting power from a common power supply, it doesn't double the power your speaker sees (which most people think) and 2. Your speakers crossover is still intact. Active bi-amping can make a difference but in my experience, is also a waste of amps with anything I've owned. I'm sure it could make a large difference on some higher end speakers that were made with that intent though but I've never had the chance to do a blind A/B test so can't really say much about that..
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Post by Porscheguy on Feb 22, 2012 17:29:58 GMT -5
Has anyone bi-amped one speaker with a upa-2? I was thinking about doing my center channel that way. thanks in advance. Sorry, it pointless..... You will never hear a difference..... :-(
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Post by Golden Ear on Feb 22, 2012 17:33:55 GMT -5
Bi-amping would not do any good since the passive crossover are in placed with your speaker. Unless you remove them and have an active crossover from your electronics then bi-amping make sense. Absolutely false! Passive bi-amping has advantages and active bi-amping definitely has its pitfalls which so many wish to ignore or minimize. jmason625, you would split the center channel signal at the receiver or prepro to the right and left channels of the UPA-2. Then one UPA-2 output channel (right or left) would be connected to the high section of the center channel speaker and the other output channel to the low section. Pretty simple, actually. On bi-amping/biwiring the speaker has 2 sets of biding post one for the high and the other for the woofer. Many concept think if they use 2 amps of identical power to feed the woofer and tweeter independenly would give them 2 times the volume, the concept is wrong, why? The crossover! It's responsible sending frequency on appropriate driver and also prevent from sending tweeter excessive power that would otherwise would burn. If you truly want to appreciate more rhythm and dynamic, it would be better to invest on high power than run them on bi-amping. My Polk lsi15 were bi-amp before and the improvement was not worth the time and effort even its design was 3.5 way. Passive crossover and bi-amping is just not worth the time and expect incredible result. If you don't believe me, google it and see what I'm talking about.
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Post by Golden Ear on Feb 22, 2012 17:36:04 GMT -5
Bi-amping is just pure snake oil.
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LCSeminole
Global Moderator
Res firma mitescere nescit.
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Post by LCSeminole on Feb 22, 2012 17:57:30 GMT -5
I don't normally respond to bi-amping threads, but in the case of passive bi-amping, because of N8DOGG's first reason, "you are getting power from a common power supply", he's right, this does not double the power as many people mistakenly believe. There is no getting around the laws of Physics.
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Post by jmason625 on Feb 22, 2012 18:28:30 GMT -5
Short answer can I do it, yes, will it have much benefit - no. with that in mind, I have a upa-2 and a upa-5 that did a great job with klipsch rf-82ii fronts and rc-62ii center along with klipsch in the rear. Upgraded the three fronts with some 4ohm speakers rated at 300watts. First idea was a xpa-3 for new ones in front, then 3 upa-1's, then xpa-2 use the upa-2 for center, hence the question that started all this. Now I am not sure any suggestions.
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Post by sounder on Feb 22, 2012 21:36:18 GMT -5
I suggest you try it. Most of these comments are on theory not actual experience. Biamping this way will not double the power. But it will send cleaner, smoother power to sub and tweeter. In the wires there can be a magnetic interference between the woofer magnet and tweeter. This is very minor but it exists. I know my explanation isn't very techical, sorry. Also your speakers have to be equipped with an appropriate crossover that is designed for the purpose.
I have my speakers set up this way. I have an IPA-1, which is a 7 channel emotiva amp. I use two channels to biamp the front B&W CDM9NT pair passively. I have listened extensively both ways. Biamping does help these speakers. It isn't a huge difference and I'd be happy either way. But since I have the extra channels, why not? You have the extras too. So try it out and see if it improves sound with your speakers in your room. That's the only way to know. In my setup I notice they sound a little smoother, particularly in the bass. Better yes. Worth the expense of adding an amp? No. As noted above, if you were adding an amp for this purpose, you'd be better off trading the UPA for an XPA.
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Deleted
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Post by Deleted on Feb 22, 2012 21:45:26 GMT -5
I suggest you try it. Most of these comments are on theory not actual experience. Biamping this way will not double the power. But it will send cleaner, smoother power to sub and tweeter. In the wires there can be a magnetic interference between the woofer magnet and tweeter. This is very minor but it exists. I know my explanation isn't very techical, sorry. Also your speakers have to be equipped with an appropriate crossover that is designed for the purpose. I have my speakers set up this way. I have an IPA-1, which is a 7 channel emotiva amp. I use two channels to biamp the front B&W CDM9NT pair passively. I have listened extensively both ways. Biamping does help these speakers. It isn't a huge difference and I'd be happy either way. But since I have the extra channels, why not? You have the extras too. So try it out and see if it improves sound with your speakers in your room. That's the only way to know. In my setup I notice they sound a little smoother, particularly in the bass. Better yes. Worth the expense of adding an amp? No. As noted above, if you were adding an amp for this purpose, you'd be better off trading the UPA for an XPA. No experience? lol buds, I've tried pretty much everything and my comments ARE from first had experience with everything under the sun. You are living in a dream land if you think you'll be getting "smoother, cleaner power" passive bi-amping your speakers, it doesn't work that way i'm afraind. Running a proper gauge wire to begin with is all you need. I'm sure as you can see from the responses that passive Bi-amping is a argument that will never have a winner. If someone wants to? go right ahead but don't tell us there is some magical clean power coming from passively bi-amping you system.
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Post by monkumonku on Feb 22, 2012 21:55:36 GMT -5
Personally, I don't believe passive bi-amping makes a bit of difference but if people claim they do hear a difference, I am not going to argue. From my perspective, this method below is just as effective as passive bi-amping or biwiring for improving the sound (but this is just my opinion.. YMMV):
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Post by slbenz on Feb 22, 2012 23:49:02 GMT -5
I tried passive biamping and biwiring using my XPA-5 amp with my Magnepan IIIa speakers and couldn't hear any difference either. Same results when I tried using my Parasound HCA-1205A amp and my B&W CDM7SE speakers.
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Post by sounder on Feb 24, 2012 9:27:01 GMT -5
I suggest you try it. Most of these comments are on theory not actual experience. Biamping this way will not double the power. But it will send cleaner, smoother power to sub and tweeter. In the wires there can be a magnetic interference between the woofer magnet and tweeter. This is very minor but it exists. I know my explanation isn't very techical, sorry. Also your speakers have to be equipped with an appropriate crossover that is designed for the purpose. I have my speakers set up this way. I have an IPA-1, which is a 7 channel emotiva amp. I use two channels to biamp the front B&W CDM9NT pair passively. I have listened extensively both ways. Biamping does help these speakers. It isn't a huge difference and I'd be happy either way. But since I have the extra channels, why not? You have the extras too. So try it out and see if it improves sound with your speakers in your room. That's the only way to know. In my setup I notice they sound a little smoother, particularly in the bass. Better yes. Worth the expense of adding an amp? No. As noted above, if you were adding an amp for this purpose, you'd be better off trading the UPA for an XPA. No experience? lol buds, I've tried pretty much everything and my comments ARE from first had experience with everything under the sun. You are living in a dream land if you think you'll be getting "smoother, cleaner power" passive bi-amping your speakers, it doesn't work that way i'm afraind. Running a proper gauge wire to begin with is all you need. I'm sure as you can see from the responses that passive Bi-amping is a argument that will never have a winner. If someone wants to? go right ahead but don't tell us there is some magical clean power coming from passively bi-amping you system. I did not say NONE of the comments were from experience. Some were. If yountriedmit, you obviously thought it was worth trying at some time. I just said he should try it. If the amp is there then try it. It won't hurt. If it sounds better great! If not, then no harm in trying. In my setup I hear a slight improvement. I would not go buy an amp for the purpose. But I would also not waste the amp channels I already have either. And yes I have very good wires too.
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Post by r1lee on Feb 24, 2012 10:57:21 GMT -5
I suggest you try it. Most of these comments are on theory not actual experience. Biamping this way will not double the power. But it will send cleaner, smoother power to sub and tweeter. In the wires there can be a magnetic interference between the woofer magnet and tweeter. This is very minor but it exists. I know my explanation isn't very techical, sorry. Also your speakers have to be equipped with an appropriate crossover that is designed for the purpose. yeah, no one has been able to provide real data that passive bi-amping does anything. Measurements with REW or any other software will probably show you no difference on passive biamping.
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