KeithL
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Post by KeithL on Apr 30, 2013 9:57:46 GMT -5
Sure, you can leave the XPA-1L in Class A mode all the time. The upside to Class A mode is that, with high-quality material, it sound slightly better. (You may not notice the difference with everything you listen to, or if you're not paying attention.) The downside is power consumption. In Class A/B mode, playing very quietly, a pair of XPA-1L's will draw 50 watts or so; in Class A, a pair will draw more like three or four HUNDRED watts. This will add slightly to your electric bill. It will also warm up the room a bit, which may be an issue in the summer - and the extra air-conditioning you use to counter it may run up the electric bill even more. We're talking a lot less than a stove, or a refrigerator, or a microwave oven... but a lot more than a night light... ^ To go off of your comment about 2 channel with the XPA-3, this might be a silly question that I'm sure has been asked, but I will ask anyway. Can you just leave the 1Ls in Class A mode all the time, even with 4ohm speakers that typically require 250-300 watts of power? Is there any advantage to switching between class A and A/B ever, and if not, why even include the selector switch? |
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Post by sergeantynot on Apr 30, 2013 10:12:45 GMT -5
Sure, you can leave the XPA-1L in Class A mode all the time. The upside to Class A mode is that, with high-quality material, it sound slightly better. (You may not notice the difference with everything you listen to, or if you're not paying attention.) The downside is power consumption. In Class A/B mode, playing very quietly, a pair of XPA-1L's will draw 50 watts or so; in Class A, a pair will draw more like three or four HUNDRED watts. This will add slightly to your electric bill. It will also warm up the room a bit, which may be an issue in the summer - and the extra air-conditioning you use to counter it may run up the electric bill even more. We're talking a lot less than a stove, or a refrigerator, or a microwave oven... but a lot more than a night light... ^ To go off of your comment about 2 channel with the XPA-3, this might be a silly question that I'm sure has been asked, but I will ask anyway. Can you just leave the 1Ls in Class A mode all the time, even with 4ohm speakers that typically require 250-300 watts of power? Is there any advantage to switching between class A and A/B ever, and if not, why even include the selector switch? Thanks for that response. Given those power specs you mentioned, would it be safe to plug both of them into the high current amp outlets on my Belkin PF60 power conditioner? I could also plug them directly into the wall, and plug the XPA-3 and UPA-7 I have to the conditioner instead. My original thinking was that the 1Ls would be using less overall power than the XPA-3/UPA-7. Also...in terms of heat dissipation, would it be safe to stack them? I would like to stack a 1L on the XPA-3 and UPA-7. They are on separate racks, that have an open air design on all sides. However, if I stack the 1L, that will leave just under 3 inches of clearance on the top. Would that be enough spacing? |
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Lonnie
Emo Staff
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Post by Lonnie on Apr 30, 2013 10:48:49 GMT -5
Sure, you can leave the XPA-1L in Class A mode all the time. The upside to Class A mode is that, with high-quality material, it sound slightly better. (You may not notice the difference with everything you listen to, or if you're not paying attention.) The downside is power consumption. In Class A/B mode, playing very quietly, a pair of XPA-1L's will draw 50 watts or so; in Class A, a pair will draw more like three or four HUNDRED watts. This will add slightly to your electric bill. It will also warm up the room a bit, which may be an issue in the summer - and the extra air-conditioning you use to counter it may run up the electric bill even more. We're talking a lot less than a stove, or a refrigerator, or a microwave oven... but a lot more than a night light... Thanks for that response. Given those power specs you mentioned, would it be safe to plug both of them into the high current amp outlets on my Belkin PF60 power conditioner? I could also plug them directly into the wall, and plug the XPA-3 and UPA-7 I have to the conditioner instead. My original thinking was that the 1Ls would be using less overall power than the XPA-3/UPA-7. Also...in terms of heat dissipation, would it be safe to stack them? I would like to stack a 1L on the XPA-3 and UPA-7. They are on separate racks, that have an open air design on all sides. However, if I stack the 1L, that will leave just under 3 inches of clearance on the top. Would that be enough spacing? Personally I am not a fan of power conditioners. All of our gear has internal filtering, noise isolation and peak suppression so a power conditioner is not needed and usually just causes problems. Had a guy call me the other day saying one of the XPR amps was singing like Aretha Franklin. After a little diagnostics it was his power conditioner that was causing the problem with the switching power supply that runs the front panel arm processor. Plugged the amp in the wall and all was good. So my opinion is to just plug the amps directly to the wall and go. ;D |
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Post by geebo on Apr 30, 2013 13:02:02 GMT -5
Thanks for that response. Given those power specs you mentioned, would it be safe to plug both of them into the high current amp outlets on my Belkin PF60 power conditioner? I could also plug them directly into the wall, and plug the XPA-3 and UPA-7 I have to the conditioner instead. My original thinking was that the 1Ls would be using less overall power than the XPA-3/UPA-7. Also...in terms of heat dissipation, would it be safe to stack them? I would like to stack a 1L on the XPA-3 and UPA-7. They are on separate racks, that have an open air design on all sides. However, if I stack the 1L, that will leave just under 3 inches of clearance on the top. Would that be enough spacing? Personally I am not a fan of power conditioners. All of our gear has internal filtering, noise isolation and peak suppression so a power conditioner is not needed and usually just causes problems. Had a guy call me the other day saying one of the XPR amps was singing like Aretha Franklin. After a little diagnostics it was his power conditioner that was causing the problem with the switching power supply that runs the front panel arm processor. Plugged the amp in the wall and all was good. So my opinion is to just plug the amps directly to the wall and go. ;D How about a CMX-2 or CMX-5? I have my XPA-5 and XPA-2 plugged into a CMX-2 which is plugged in to the wall outlet. |
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Post by thorcorps on Apr 30, 2013 13:03:43 GMT -5
I experimented a couple of years ago with my XPA-2 going through a Belkin PF40 versus directly into the wall and there was a very noticeable difference. Even though I was using one of the "high current" receptacles on the Belkin, dynamics suffered significantly. This was turned up relatively loud with "challenging" source material (Children of Bodom, not Diana Krall). So, after that test, I never plugged any of my amps into any of the Belkin filtering products. If you need to extend power or gain additional outlets, one of the regular surge protectors should be fine, but as Lonnie stated, straight into the wall is best.
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Post by villock on Apr 30, 2013 13:06:50 GMT -5
Personally I am not a fan of power conditioners. All of our gear has internal filtering, noise isolation and peak suppression so a power conditioner is not needed and usually just causes problems. Had a guy call me the other day saying one of the XPR amps was singing like Aretha Franklin. After a little diagnostics it was his power conditioner that was causing the problem with the switching power supply that runs the front panel arm processor. Plugged the amp in the wall and all was good. So my opinion is to just plug the amps directly to the wall and go. ;D How about a CMX-2 or CMX-5? I have my XPA-5 and XPA-2 plugged into a CMX-2 which is plugged in to the wall outlet. Same here. I have my XPA-2 and CMX-5 plugged into the CMX-2 and my XPA-5 into the CMX-5 |
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Post by monkumonku on Apr 30, 2013 13:20:58 GMT -5
How about a CMX-2 or CMX-5? I have my XPA-5 and XPA-2 plugged into a CMX-2 which is plugged in to the wall outlet. Same here. I have my XPA-2 and CMX-5 plugged into the CMX-2 and my XPA-5 into the CMX-5 I have (or had before selling them) my two XPA-1's plugged into a CMX-2, and had a couple of APC G5 power centers plugged into another CMX-2. It all seems to work fine. |
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focal
Minor Hero
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Post by focal on Apr 30, 2013 13:26:12 GMT -5
not that you need the power for modest home systems, but what in theory sound better?
XPR-2 or two XPA-1L?
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Post by sergeantynot on Apr 30, 2013 13:42:44 GMT -5
^ You jumped ahead...I'm still looking for more XPA-2/3 comparisons.
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Lonnie
Emo Staff
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Post by Lonnie on Apr 30, 2013 13:52:43 GMT -5
Personally I am not a fan of power conditioners. All of our gear has internal filtering, noise isolation and peak suppression so a power conditioner is not needed and usually just causes problems. Had a guy call me the other day saying one of the XPR amps was singing like Aretha Franklin. After a little diagnostics it was his power conditioner that was causing the problem with the switching power supply that runs the front panel arm processor. Plugged the amp in the wall and all was good. So my opinion is to just plug the amps directly to the wall and go. ;D How about a CMX-2 or CMX-5? I have my XPA-5 and XPA-2 plugged into a CMX-2 which is plugged in to the wall outlet. The CMX series were specifically designed not be power conditioners. They are very elaborate filters that will allow a boat load of current flow, so no problems there.  |
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Post by geebo on Apr 30, 2013 15:01:16 GMT -5
How about a CMX-2 or CMX-5? I have my XPA-5 and XPA-2 plugged into a CMX-2 which is plugged in to the wall outlet. The CMX series were specifically designed not be power conditioners. They are very elaborate filters that will allow a boat load of current flow, so no problems there. Gee, I love boatloads of current! ;D |
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Lonnie
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Post by Lonnie on Apr 30, 2013 15:41:42 GMT -5
The CMX series were specifically designed not be power conditioners. They are very elaborate filters that will allow a boat load of current flow, so no problems there. Gee, I love boatloads of current! Doesn't everyone? ;D ;D ;D ;D ;D |
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hemster
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Post by hemster on Apr 30, 2013 15:56:06 GMT -5
The CMX series were specifically designed not be power conditioners. They are very elaborate filters that will allow a boat load of current flow, so no problems there. Gee, I love boatloads of current! Shocking!  ;D |
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Post by geebo on Apr 30, 2013 15:59:59 GMT -5
Gee, I love boatloads of current! Shocking! ;D Electrifying! ;D  |
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Post by Hair Nick on Apr 30, 2013 16:14:53 GMT -5
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Post by Golden Ear on Apr 30, 2013 16:26:52 GMT -5
Thanks for that response. Given those power specs you mentioned, would it be safe to plug both of them into the high current amp outlets on my Belkin PF60 power conditioner? I could also plug them directly into the wall, and plug the XPA-3 and UPA-7 I have to the conditioner instead. My original thinking was that the 1Ls would be using less overall power than the XPA-3/UPA-7. Also...in terms of heat dissipation, would it be safe to stack them? I would like to stack a 1L on the XPA-3 and UPA-7. They are on separate racks, that have an open air design on all sides. However, if I stack the 1L, that will leave just under 3 inches of clearance on the top. Would that be enough spacing? Personally I am not a fan of power conditioners. All of our gear has internal filtering, noise isolation and peak suppression so a power conditioner is not needed and usually just causes problems. Had a guy call me the other day saying one of the XPR amps was singing like Aretha Franklin. After a little diagnostics it was his power conditioner that was causing the problem with the switching power supply that runs the front panel arm processor. Plugged the amp in the wall and all was good. So my opinion is to just plug the amps directly to the wall and go. ;D Is this only apply on amp? Should I use power conditioner on USP-1 and XDA-1? |
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Post by vinylfreak on Apr 30, 2013 16:33:04 GMT -5
Heh! Nice |
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Lonnie
Emo Staff
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Post by Lonnie on Apr 30, 2013 16:55:21 GMT -5
Personally I am not a fan of power conditioners. All of our gear has internal filtering, noise isolation and peak suppression so a power conditioner is not needed and usually just causes problems. Had a guy call me the other day saying one of the XPR amps was singing like Aretha Franklin. After a little diagnostics it was his power conditioner that was causing the problem with the switching power supply that runs the front panel arm processor. Plugged the amp in the wall and all was good. So my opinion is to just plug the amps directly to the wall and go. ;D Is this only apply on amp? Should I use power conditioner on USP-1 and XDA-1? All of our gear has the same internal power filters so you really don't need anything but if you want to use one its cool. |
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Post by milt99 on Apr 30, 2013 20:43:53 GMT -5
Personally, I'll be using the A\B switch as standby mode.
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Post by ÈlTwo on Apr 30, 2013 21:16:17 GMT -5
Had a guy call me the other day saying one of the XPR amps was singing like Aretha Franklin. ;D He doesn't like Aretha? |
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^ To go off of your comment about 2 channel with the XPA-3, this might be a silly question that I'm sure has been asked, but I will ask anyway. Can you just leave the 1Ls in Class A mode all the time, even with 4ohm speakers that typically require 250-300 watts of power? Is there any advantage to switching between class A and A/B ever, and if not, why even include the selector switch?
;D
