DYohn
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Posts: 18,342
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Post by DYohn on Jun 24, 2019 15:40:36 GMT -5
I was thinking of purchasing the XPA-5 so I could power my mains and center channel.. Until I bit the bullet to get rid of the receiver all together, that's likely what I would do.
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Post by dxtrem3fx on Jun 24, 2019 16:27:48 GMT -5
I think at this point the OP is either scratching his or her head or down the road. Point is? Those 'power ratings' for your original amp are FICTION. And have little to do with your conditions of use which is apparetly fairly Loud and multiple channels. Me? I'm a big fan of the PA-1 mono 'D' amps. Cool running and mondo power. Off load main / center channels to external amps FIRST. Speaking of power? The 160 watt rating VS th 40 watt all-channels measured is about 6 db. That's a LOT especially considering the lack of headroom. That's the low-distortion BURST POWER. Welcome to the Churn. They intentionally rob lower cost amps of features and force an upgrade. Is Yamaha even a good HT amp any more? Was it ever? Some Denon stuff I've heard over the years doesnt' please, either. To future proof yourself? Maybe a pre-pro, but be careful. I'm not the one to ask about this, being a stereo guy. Than at some point you'll discover what I don't think anyone here has mentioned. Your SPEAKERS may not be capable of what you ask. And If they work for 20 minutes, no guarantee that they won't cook-off in another 20 after THAT. Heat is the big enemy here and believe it or not, speaker performance changes for the worse the hotter they get. Damage may be cumulative. After a couple months of beating the speakers with a lot of power, at least the top 6db of which is at 10% distortion, they may simply throw in the towel. I'm the OP of this topic. Thank you for the advice.
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Post by leonski on Jun 24, 2019 18:28:42 GMT -5
You mentioned absorber material. The #1 DIY choice is OC 703. That's Owens Corning. Comes in 2'x4' sheets of 1", 2" and I think 4". Build frames WITHOUT BACk and space a couple inches from the wall. www.soundaway.com/owens-corning-fiberglass-panels-s/29.htmLink is just an example and not intended to be THE place to buy, but does have a good listing and correct selection.
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Post by creimes on Jun 24, 2019 21:35:00 GMT -5
So i ordered a XPA-9 on Friday and canceled my order today. My Yamaha RX-A3070 does not allow all channels to be powered by an external amp. I'm pretty disappointed right now . I need to buy a new AVR or a pre/pro. " src="//storage.proboards.com/forum/images/smiley/superangry.png"> Yamaha RX-A3070 manual download Looks like you could do 7 channels, why not just keep the XPA-9 on order ?? always good to future proof with the extra 2 channels or are you going to go with an XPA-7 then ?? Wait though it has 11.2 rca preouts, can you not use them all ?? Chad
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Post by davidl81 on Jun 24, 2019 22:07:43 GMT -5
Just go with your first plan of the XPA-5 and use the AVR for the height speakers (I think you are doing 5.1.4). The AVR will do fine with the heights and the XPA-5 will rock your main speakers. This is how I had my Atmos setup at first. Later you can upgrade to a pre-pro and more amps if you like, but I think you will be quite happy with the XPA-5
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Post by dxtrem3fx on Jun 25, 2019 7:17:46 GMT -5
So i ordered a XPA-9 on Friday and canceled my order today. My Yamaha RX-A3070 does not allow all channels to be powered by an external amp. I'm pretty disappointed right now . I need to buy a new AVR or a pre/pro. " src="//storage.proboards.com/forum/images/smiley/superangry.png"> Yamaha RX-A3070 manual download Looks like you could do 7 channels, why not just keep the XPA-9 on order ?? always good to future proof with the extra 2 channels or are you going to go with an XPA-7 then ?? Wait though it has 11.2 rca preouts, can you not use them all ?? Hello Chad, Some expert on another forum told me. The Yamaha only lets you insert an external amp for the 2 front left/right channels OR up to four of the surround channels. So I've reached out to Yamaha tech support for clarification on external amp connections and how many channels I can actually power using and external amp with the RX-A3070. If they tell me the same thing then i'm getting a new AVR or a pre/pro. I hate making bad decisions, life seems is full of them. If they say I'm good to go I will re-order my AMP.
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Post by creimes on Jun 25, 2019 8:10:59 GMT -5
Looks like you could do 7 channels, why not just keep the XPA-9 on order ?? always good to future proof with the extra 2 channels or are you going to go with an XPA-7 then ?? Wait though it has 11.2 rca preouts, can you not use them all ?? Hello Chad, Some expert on another forum told me. The Yamaha only lets you insert an external amp for the 2 front left/right channels OR up to four of the surround channels. So I've reached out to Yamaha tech support for clarification on external amp connections and how many channels I can actually power using and external amp with the RTX-A3070. If they tell me the same thing then i'm getting a new AVR or a pre/pro. I hate making bad decisions, life seems is full of them. If they say I'm good to go I will re-order my AMP. That would be odd, it has the RCA pre-outs on the back so I'm not sure why they wouldn't work ?? Any receiver/processor I have owned they are active all the time. Chad
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novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,223
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Post by novisnick on Jun 25, 2019 9:41:22 GMT -5
Hopefully you own a Yamaha RX A3070 and you only miss-typed RTA 3070. I own a Yamaha RX A3020 and have no problem running all channels through an external amp. Good luck
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KeithL
Administrator
Posts: 9,929
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Post by KeithL on Jun 25, 2019 9:45:47 GMT -5
I was thinking the same thing.
In general, if you have a full set of preamp outputs, you should be able to use them all at once. They don't "use power" or "load anything down" when you use them.
The only limitation I've seen on modern receivers is that some have less than a full set of preamp outputs or speaker outputs... And there is some sort of limitation about which channels you can assign to one or the other. For example, some only have one pair of preamp outputs, and they're hard-wired to the front two channels.
That would be odd, it has the RCA pre-outs on the back so I'm not sure why they wouldn't work ?? Any receiver/processor I have owned they are active all the time. Chad
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Post by dxtrem3fx on Jun 25, 2019 10:17:17 GMT -5
I thought the same thing and I believe I will be good to go. But for a sanity check, I will wait to see what Yamaha has to say.
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Post by gus4emo on Jun 25, 2019 10:28:01 GMT -5
I thought the same thing and I believe I will be good to go. But for a sanity check, I will wait to see what Yamaha has to say. Welcome, once you update your sound, consider a bigger screen and thank yourself later....
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Post by thrillcat on Jun 25, 2019 10:32:04 GMT -5
I thought the same thing and I believe I will be good to go. But for a sanity check, I will wait to see what Yamaha has to say. Yeah, don't listen to what that guy over there said. He's confusing the Zone 2/3 output, because you use the Zone 2/3 stereo outputs to send the Atmos channels to an external amp. All that configuration stuff he was talking about is true, but he is neglecting the fact that there are 7.2 outputs for the bed and sub channels right next to the other 4 outputs that are used for EITHER zone 2/3 OR Atmos. The only limitation is that you can't use Zone 2 or 3 if you're using an external amp for your Atmos channels.
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Post by davidl81 on Jun 25, 2019 11:42:26 GMT -5
I was thinking the same thing.
In general, if you have a full set of preamp outputs, you should be able to use them all at once. They don't "use power" or "load anything down" when you use them.
The only limitation I've seen on modern receivers is that some have less than a full set of preamp outputs or speaker outputs... And there is some sort of limitation about which channels you can assign to one or the other. For example, some only have one pair of preamp outputs, and they're hard-wired to the front two channels.
That would be odd, it has the RCA pre-outs on the back so I'm not sure why they wouldn't work ?? Any receiver/processor I have owned they are active all the time. Chad FWIW my Marantz SR7009 had 11 pre amp outputs, but when playing Atmos material only a max of 9 outputs could be used, so you would have to use the internal amp for at least two channels. It made no sense, but that’s how it was set up.
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Post by dxtrem3fx on Jun 25, 2019 17:09:22 GMT -5
Great news from Yamaha. Woot Woot Woot!
"Michael, Thanks for your email. You can power all 9 (or 11) channels on external amps. You will just need to change the Power Amp Assignment setting to configure the "ZONE 2/F.PRESENCE" and "ZONE 3/ R.PRESENCE" pre-outs for Front Presence and Rear Presence duty respectively:
1) On the remote, press 'ON SCREEN' to bring up the menu 2) Select "Setup" --> "Speaker" --> "Manual Setup" 3) Select "Power Amp Assign" and set it to "7.2.4 [ext.FP+RP]" 4) Press 'ON SCREEN' to exit the menu
After changing this setting, and connecting the amp and speakers, you'll want to run YPAO again so that the receiver can activate and balance those new height channels. Let me know if you need further assistance."
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Post by joeesp9 on Jun 26, 2019 10:06:26 GMT -5
I'm in the market for a Class D amplifier. How would a pair of PA-1's work with a pair of Magnepan 1.7's?
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KeithL
Administrator
Posts: 9,929
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Post by KeithL on Jun 26, 2019 11:35:41 GMT -5
That would be an excellent pairing.
The PA-1's sound really nice.... and they have lots of power into a 4 Ohm load.
I'm in the market for a Class D amplifier. How would a pair of PA-1's work with a pair of Magnepan 1.7's?
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Post by joeesp9 on Jun 26, 2019 17:36:19 GMT -5
Thanks for the prompt reply. I'm collecting my meager funds and will buy a pair of the MA-1's. FWIW: I have an XDA-2 and a UMC-200 and I'm very satisfied with both.
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Post by creimes on Jun 26, 2019 20:57:12 GMT -5
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Post by dxtrem3fx on Jun 28, 2019 17:16:04 GMT -5
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Post by leonski on Jun 29, 2019 20:28:00 GMT -5
I'm in the market for a Class D amplifier. How would a pair of PA-1's work with a pair of Magnepan 1.7's? It depends.....and it depends. How large a space? How loud do you like it? Any room modifications? What and how much power are you using NOW? What do you LIKE and DISLIKE about your current sound and power level? I run 2x200 per speaker. I have the 1.6, which is within 1db of the same sensitivity. And I can run the amps 'dry'. I had a 'D' amp, using ASP modules from B&O, but an earlier version. They were 500x2 @4ohms and I think maybe my new amps go louder. I couldn't hazard a guess as to why. That being said? The PA1 should provide a good sound. B&O has made improvements with every generation of amplifier. Too bad that Magnepan makes bi-amp / bi-wire impossible without digging into the speaker. Best case? An ACTIVE crossover with 2xPA1 per speaker. That pesky series crossover won't make things easy. If you are into DIY? The NC400 would be wonderful. Here is my block diagram of an amp for a SINGLE speaker running in biamp. Crossover / electronic all in ONE box. Attachments:
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