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Post by GuidoM on Sept 9, 2013 9:31:46 GMT -5
I purchased a XPR-2 and was wondering if instead of buying the Furman ADP-1520 Adapter Cord (Adapter 20 To 15 Amp), I could buy the CMX-2 and use that as both an adapter, a circuit breaker, and a conditioner all in one? If not, is there an item out there that would fit this spot nicely? Thank you all in advance.
Thank You,
Guido
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Post by garbulky on Sept 9, 2013 10:01:00 GMT -5
The CMX-2 is not a power conditioner in the traditional sense. It removes DC offset. Emotiva does not reccomend power conditioners and recommends plugging directly into the wall to prevent limitation of dynamics - even if the power conditioner is rated for well above the amps power requirement. Emotiva amps all have line conditioners in built so in terms of "conditioning" the cmx-2 is a non-current limiting device.
I don't know if the CMX-2 will work as a 20 amp adapter. Maybe it can, but I wasn't aware of this.
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Post by ews0899 on Sept 9, 2013 11:02:33 GMT -5
Guido-
I recently purchased the XPR2 and hired an electrician to install two dedicated 20 amp outlets wired directly to the circuit panel---charged me 150 dollars. RLW said it best "it's like putting wooden clogs on Secretarit"---why would you?
For the additional few bucks you have piece of mind that your amp is powered properly. Just my 2 cents worth. Happy listening!
Ed
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Post by mgbpuff on Sept 9, 2013 13:10:41 GMT -5
The CMC-2 will serve as an adapter as it has 15A / 20a type outlets. Try the 15A circuit on your XPR-2, The worst that can happen is you will trip the branch circuit c/b. If it does not trip on enerigization or on the loudest peaks of music or theater that you like, then the circuit is adequate and a 20 A circuit will do nothing to improve SQ.
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Post by phatfos1 on Sept 9, 2013 14:00:40 GMT -5
You got a good deal ews0899. Either that or electricians in my area are all trying to get one over one me. How far is your theater from the box? Couple different guys told me way over $500 to run a line from one end of my house to the other. One guy wanted $1,000 plus materials. Yuck. I've never popped a breaker with my XPR-5 (I use the adapter out of the wall) even though I've tried. Gets way too loud at -10 and my entire house shakes.
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Post by AudioHTIT on Sept 9, 2013 15:11:36 GMT -5
Guido- I recently purchased the XPR2 and hired an electrician to install two dedicated 20 amp outlets wired directly to the circuit panel---charged me 150 dollars. RLW said it best "it's like putting wooden clogs on Secretarit"---why would you? For the additional few bucks you have piece of mind that your amp is powered properly. Just my 2 cents worth. Happy listening! Ed I think RLW said that before he understood that the 20 Amp connector was there primarily for testing and ratings. You cannot 'starve' the amp on a 15 amp circuit unless the voltage sags, it will either work or the breaker will blow (and that's not likely). Using the adaptor or the CMX-2 should work fine (you can see the 20A connectors in the rear pic). Attachments:
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Post by dally on Sept 9, 2013 15:48:59 GMT -5
Guido - If your handy, the cheapest way to get your xpr-2 running is to go to your local hardware store and buy a 20 amp receptacle (aprox. $8). Flip your 15 amp breaker off,pull out your old 15 amp receptacle and replace with your new 20 amp receptacle. This will work just fine. The worst that could happen is you'll pull too much current and flip the breaker, but this is HIGHLY unlikely. The cmx-2 will work also, but unless you're looking for the extra benefits it is not necessary. Enjoy your new amp!  |
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LCSeminole
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Post by LCSeminole on Sept 9, 2013 15:57:06 GMT -5
You got a good deal ews0899. Either that or electricians in my area are all trying to get one over one me. How far is your theater from the box? Couple different guys told me way over $500 to run a line from one end of my house to the other. One guy wanted $1,000 plus materials. Yuck. I've never popped a breaker with my XPR-5 (I use the adapter out of the wall) even though I've tried. Gets way too loud at -10 and my entire house shakes. It sounds like to me your chosen electricians are really gouging their customers. Last year when I had two 20amp lines run, I was charged a flat $200. I bought the 12-2 Romex and hospital grade outlets at HomeDepot and total spent was close to $275 total. Local code required that I have a Florida state certified electrician do the connection to the panel, so for insurance purposes I didn't go the DIY route. Anyhow, over $500 sounds expensive to me. FYI, I'm running an XPR-2 and an XPR-5 off of one of the 20amp circuits and it's not even breaking a sweat. |
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hemster
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Post by hemster on Sept 9, 2013 16:34:33 GMT -5
I just finished installing my new PA-7-350 amp. It is a beast! In my home it is not practical to run a 20A line easily. Two electricians have said that I'd need to either run the line on the outside walls or up to the attic and down the other side of the home (in the diagonally opposite corner)and both options are expensive. So I've simply chopped off the plug end of the cable and installed a regular 15A 3-prong plug. A $5 remedy. With very loud music running 7 channels I'm drawing about 4 amps total. I don't expect to draw anywhere near 15A and if I should exceed that it'll trip the breaker but I certainly won't hear it!  |
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Post by The Mad Norseman on Sept 9, 2013 18:00:38 GMT -5
You got a good deal ews0899. Either that or electricians in my area are all trying to get one over one me. How far is your theater from the box? Couple different guys told me way over $500 to run a line from one end of my house to the other. One guy wanted $1,000 plus materials. Yuck. I've never popped a breaker with my XPR-5 (I use the adapter out of the wall) even though I've tried. Gets way too loud at -10 and my entire house shakes. Anyhow, over $500 sounds expensive to me. FYI, I'm running an XPR-2 and an XPR-5 off of one of the 20amp circuits and it's not even breaking a sweat. Hey LC! - then you're not playing it loud enough! |
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Post by phatfos1 on Sept 9, 2013 18:12:13 GMT -5
You got a good deal ews0899. Either that or electricians in my area are all trying to get one over one me. How far is your theater from the box? Couple different guys told me way over $500 to run a line from one end of my house to the other. One guy wanted $1,000 plus materials. Yuck. I've never popped a breaker with my XPR-5 (I use the adapter out of the wall) even though I've tried. Gets way too loud at -10 and my entire house shakes. It sounds like to me your chosen electricians are really gouging their customers. Last year when I had two 20amp lines run, I was charged a flat $200. I bought the 12-2 Romex and hospital grade outlets at HomeDepot and total spent was close to $275 total. Local code required that I have a Florida state certified electrician do the connection to the panel, so for insurance purposes I didn't go the DIY route. Anyhow, over $500 sounds expensive to me. FYI, I'm running an XPR-2 and an XPR-5 off of one of the 20amp circuits and it's not even breaking a sweat. Yeah, I'm no electrician and certainly I'm no electrical engineer, but seems to me if I'm not popping the breaker then I'm getting everything I need out of the amp/speakers/sub. I do get my XPR all lit up (all channels). There's a scene in Saving Private Ryan (the big battle at the bridge when Hanks gets shot) where the entire frequency range is utilized from the lowest low of the tank rumble to the ultra high ringing of the post-blast perspective shots; I really crank that scene when I'm showing off the system to someone. Quite literally a visceral and remarkably realistic experience at reference level (I would think, never been in battle). Even at that level, where everybody is on the verge of being uncomfortable with the volume I haven't hit the wall, so to speak. So, unless I can find someone to do the work for what it's worth to me ($200ish) I'll just keep pushing it 'till I find the limit. |
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LCSeminole
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Post by LCSeminole on Sept 9, 2013 19:07:38 GMT -5
It sounds like to me your chosen electricians are really gouging their customers. Last year when I had two 20amp lines run, I was charged a flat $200. I bought the 12-2 Romex and hospital grade outlets at HomeDepot and total spent was close to $275 total. Local code required that I have a Florida state certified electrician do the connection to the panel, so for insurance purposes I didn't go the DIY route. Anyhow, over $500 sounds expensive to me. FYI, I'm running an XPR-2 and an XPR-5 off of one of the 20amp circuits and it's not even breaking a sweat. Yeah, I'm no electrician and certainly I'm no electrical engineer, but seems to me if I'm not popping the breaker then I'm getting everything I need out of the amp/speakers/sub. I do get my XPR all lit up (all channels). There's a scene in Saving Private Ryan (the big battle at the bridge when Hanks gets shot) where the entire frequency range is utilized from the lowest low of the tank rumble to the ultra high ringing of the post-blast perspective shots; I really crank that scene when I'm showing off the system to someone. Quite literally a visceral and remarkably realistic experience at reference level (I would think, never been in battle). Even at that level, where everybody is on the verge of being uncomfortable with the volume I haven't hit the wall, so to speak. So, unless I can find someone to do the work for what it's worth to me ($200ish) I'll just keep pushing it 'till I find the limit. I think you'll be just fine. If I'm running 2 XPR power amplifiers off of one 20a circuit and not tripping the breaker, you should be good to go on one 15a circuit. I mainly wanted my two 20a circuits run so I could isolate my home theater gear from everything else in the house. |
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LCSeminole
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Post by LCSeminole on Sept 9, 2013 19:12:21 GMT -5
Anyhow, over $500 sounds expensive to me. FYI, I'm running an XPR-2 and an XPR-5 off of one of the 20amp circuits and it's not even breaking a sweat. Hey LC! - then you're not playing it loud enough! I've had the lights dancing on both my XPR's and the house rattling a bit from my SVS subs, at that point I was thinking my neighbors were probably calling the cops.  |
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guido
Seeker Of Truth
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Post by guido on Sept 10, 2013 0:15:01 GMT -5
I just finished installing my new PA-7-350 amp. It is a beast! In my home it is not practical to run a 20A line easily. Two electricians have said that I'd need to either run the line on the outside walls or up to the attic and down the other side of the home (in the diagonally opposite corner)and both options are expensive. So I've simply chopped off the plug end of the cable and installed a regular 15A 3-prong plug. A $5 remedy. With very loud music running 7 channels I'm drawing about 4 amps total. I don't expect to draw anywhere near 15A and if I should exceed that it'll trip the breaker but I certainly won't hear it! I have the exact same situation as 'hemster'. My wires would have to run from the the basement box, up passed two floors, into the attic, Etc., Etc.. Or run from the outside. I believe he and I saw the same electricians.  Way too much money. I had made the assumption that the CMX-2 was a Power Conditioner even though that term is not used on the product page, silly me. Then, is it a very expensive extension cord disguised as a "Precision AC Line Restoration & Common Mode Filter System? I did know that it would accept a 20 amp plug because of the picture. I will wait to hear more comments, but surely the $8 DIY sounds better than the $99 CMX-2. Will it make a big difference if I spend $8 dollars on the wall socket as opposed to a more expensive one? And I do understand the concept of 'you get what you pay for', but I also understand the concept of 'overkill'. Thank you all for all the entertaining and educational responses. g-- |
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Post by AudioHTIT on Sept 10, 2013 0:46:11 GMT -5
Will it make a big difference if I spend $8 dollars on the wall socket as opposed to a more expensive one? And I do understand the concept of 'you get what you pay for', but I also understand the concept of 'overkill'. Thank you all for all the entertaining and educational responses. g-- As far as the amp is concerned there's no difference between a 20A duplex outlet on a 15A circuit, or a 20A adapter on the same circuit. The adapter costs about $20 and you'll be up and running as soon as you plug it in. The outlet is a few dollars but does require you to shut off the circuit, use some tools, and possibly find more wires than you expected making it a little more difficult to stuff them all back in. The outlet though is the 'cleanest', as for hospital grade, some feel they hold the plug tighter, the regular ones work fine for me. |
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Post by dally on Sept 10, 2013 7:11:45 GMT -5
The cmx-2 is more than a $99 extension cord. It is used to remove DC leakage on your AC power lines. This will usually present itself as transformer hum on your power amps. So it is sort of a power conditioner but it doesn't have the same filtering or limit current like a lot of other designs. If you plug your amp in and it has a loud hum (from the amp itself) then you could use a cmx-2, otherwise you should be fine plugging directly into the wall. |
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guido
Seeker Of Truth
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Post by guido on Sept 11, 2013 7:40:57 GMT -5
The cmx-2 is more than a $99 extension cord. It is used to remove DC leakage on your AC power lines. This will usually present itself as transformer hum on your power amps. So it is sort of a power conditioner but it doesn't have the same filtering or limit current like a lot of other designs. If you plug your amp in and it has a loud hum (from the amp itself) then you could use a cmx-2, otherwise you should be fine plugging directly into the wall. dally, thanks for that explanation, and while I'm at it, I want to thank all that responded. I will remember the CMX-2 if I get that annoying hum. I will be going with the Adapter Cord and see how that works out. I am new to this site but plan on making this my go-to place with problems and to learn a thing or two. I just started purchasing my equipment, and did the newbie mistake of starting with the Power Amps first. I bought two XPR-2s. I saw the sale and just got too happy, but I was thinking along the lines of bi-amping my speakers when I got them. I just purchased the speaker, so I think I got that right. I hope to learn enough here to one day be able to give advice. The hardest part of all this, is trying not to say, "Oh man, I should have bought that instead." I'm sure you've all been there. Guido |
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Post by audiophill on Sept 11, 2013 7:56:17 GMT -5
Before i went with dedicated 20 amp lines with each of my xpr's i did the cmx-2 for the xpr's and it worked fine.
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Post by cwmcobra on Sept 11, 2013 9:41:37 GMT -5
My basement is a theater in progress. No electical circuits have been run yet and none of the gear has been placed in their final positions. I will wire two dedicated 20A circuits for my audio gear when I get to that point. In the meantime, I have all the gear set up in the end of the basement where the theater will not be. I bought a PA 7-350 and a 4Z-75 in the Sherbourn closeout sale. Since I already purchased a CMX-2 (just in case I needed it), I used it to plug the 7-350 and the 4Z-75 in. I use the 4Z-75 to drive a pair of BFM THT subs, so it gets worked a bit. To make matters worse electrically, I had the CMX-2 plugged into a 50 foot long 16 gauge extension cord. Outside the CMX2 I also had my UMC-1 and CD player plugged into the same extension cord circuit. That cord is plugged into a 15 amp circuit wired with 14 gauge Romex. I have played quite a bit of loud music with this setup and have never popped the circuit breaker or had any indication of more amps required. Now my speakers are all very efficient Klipsch legend series, so the output usage from the 7-350 was not really being tested very thoroughly.
My point is that even with a known very substandard electrical source, the 7-350 ran fine on a 15A circuit. I think I also read that Dan stated you only need a 20A circuit if testing "at the limits" in the lab, so I would also consider his authoritative voice on this when determining true needs.
Cheers!
Chuck
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guido
Seeker Of Truth
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Post by guido on Sept 11, 2013 15:47:39 GMT -5
OK Chuck, since you are presently using the CMX-2 without a problem, and on a "50 foot long 16 gauge extension cord" to boot, I think that's all that I need. I have changed my mind here a few times, due to the excellent advice, but finally ended up purchasing the CMK-2. How exciting it must feel to be building a HT. Good luck with that.
Guido
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Way too much money. I had made the assumption that the CMX-2 was a Power Conditioner even though that term is not used on the product page, silly me. Then, is it a very expensive extension cord disguised as a "Precision AC Line Restoration & Common Mode Filter System? I did know that it would accept a 20 amp plug because of the picture. I will wait to hear more comments, but surely the $8 DIY sounds better than the $99 CMX-2. Will it make a big difference if I spend $8 dollars on the wall socket as opposed to a more expensive one? And I do understand the concept of 'you get what you pay for', but I also understand the concept of 'overkill'.
