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post #53701 of 53710 Old Yesterday, 12:08 PM
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Originally Posted by Jaad View Post
No, as I mentioned I am not using separates. The new receiver that I purchased powers 11 channels. it powers fronts, center, surrounds and subs at 140watt while using an A/B type of amp. the height speakers and back channel is powered still by the receiver but uses another amp that of the D type at 60 watts.

One volume control for all 11 channels.

To clarify:

what I am wondering about is my back speakers are rated at 100 Watts. All my speakers are rated 100-125 watts by the way aside from the 50 watts that will go up for atmos. I won't have any problem driving all of them with the receiver that is for sure. what I am wondering about the most is if I start cranking the volume on the amp am I asking too much of the D type amp of the receiver to power my back channel at a level that will keep up with the fronts which is powers by an A/B amp? There will be some clipping happening for sure at high DB, yes?
No I am confused. Is the A/B amp and the D amp plugged into the 1120 to power the fronts and the back channels? If you have anything plugged into the receiver to power the speakers that is a separate. Are you referring to switching in and out of 2 channel for music to going 5.1 or 7.1? The Anthem like other AVR's will only put out 140 per channel to the front main speakers when in stereo. When you switch to going 5.X to 7.X the power is lowered by a certain percentage and you will not get the full 140 watts out of the front. The other channels are lowered as well I believe. The Klipsch speakers you have should be able to handle what ever the AVR can put out. If it can't you can always get a bigger Anthem 7 channel and 4 channel amp to push more sound, but remember, if you are at 50 watts max, you will have to go to 100 watts to notice any kind of difference.

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post #53702 of 53710 Old Yesterday, 12:21 PM
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Originally Posted by Jaad View Post
No, as I mentioned I am not using separates. The new receiver that I purchased powers 11 channels. it powers fronts, center, surrounds and subs at 140watt while using an A/B type of amp. the height speakers and back channel is powered still by the receiver but uses another amp that of the D type at 60 watts.

One volume control for all 11 channels.

To clarify:

what I am wondering about is my back speakers are rated at 100 Watts. All my speakers are rated 100-125 watts by the way aside from the 50 watts that will go up for atmos. I won't have any problem driving all of them with the receiver that is for sure. what I am wondering about the most is if I start cranking the volume on the amp am I asking too much of the D type amp of the receiver to power my back channel at a level that will keep up with the fronts which is powers by an A/B amp? There will be some clipping happening for sure at high DB, yes?
Underpowering your speakers can be problematic, which is what I think you're concerned with. There is a risk.. it's a very small risk.. but there is a risk that you'll send a clipped signal to your speakers and have a serious problem. It's not clear to me at what volume you'd have to be at for that to occur, though.

I'd search some threads for underpower risks.

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post #53703 of 53710 Old Yesterday, 12:22 PM
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Originally Posted by Ladeback View Post
No I am confused. Is the A/B amp and the D amp plugged into the 1120 to power the fronts and the back channels? If you have anything plugged into the receiver to power the speakers that is a separate. Are you referring to switching in and out of 2 channel for music to going 5.1 or 7.1? The Anthem like other AVR's will only put out 140 per channel to the front main speakers when in stereo. When you switch to going 5.X to 7.X the power is lowered by a certain percentage and you will not get the full 140 watts out of the front. The other channels are lowered as well I believe. The Klipsch speakers you have should be able to handle what ever the AVR can put out. If it can't you can always get a bigger Anthem 7 channel and 4 channel amp to push more sound, but remember, if you are at 50 watts max, you will have to go to 100 watts to notice any kind of difference.
The 1120 uses both A/B and D amplification. It's described on their website.

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post #53704 of 53710 Old Yesterday, 12:55 PM
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Originally Posted by Scars View Post
The 1120 uses both A/B and D amplification. It's described on their website.

I was just on their website and didn't see anything about a A/B Amp and a D amp. I did see that at 8 Ohms channels 1-5 will be 140 watts and the Remaining 2 6 watts if that's what you mean?

Wouldn't he have to turn it up pretty far for it to clip? That would be to load for me, but I am old and to much hearing loss so I don't crank it anymore.

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post #53705 of 53710 Old Yesterday, 01:12 PM
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Originally Posted by Scars View Post
Underpowering your speakers can be problematic, which is what I think you're concerned with. ...
I'd search some threads for underpower risks.
YES!!!! that is exactly what I am worried about. There is an awful lot on the reverse overpowering speakers with too big an amp but very little about under powering speakers. I will try to use your search criteria. maybe I will get better luck at finding info on the subject. thanks a bunch mate.

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post #53706 of 53710 Old Yesterday, 01:22 PM
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Here is what I found:

Good chance I asked because by the sound of it "Under powering speakers" can potentially damage speakers even more than over powering them.

check out this post and response from MikeH on AvForum
https://www.avforums.com/threads/how...peakers.47762/

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post #53707 of 53710 Old Yesterday, 02:02 PM
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Quote:
Originally Posted by Jaad View Post
Here is what I found:

Good chance I asked because by the sound of it "Under powering speakers" can potentially damage speakers even more than over powering them.

check out this post and response from MikeH on AvForum
https://www.avforums.com/threads/how...peakers.47762/
Gotcha (after seeing your receiver). Didn't even know they made such a thing, pretty cool receiver.

Correct, underpowering can cause more damage than overpowering. Which is why it's generally a good idea to overpower than underpower (you can always turn it down). That atmos channels shouldn't draw as much power as the 5 ground speakers, but since you're running them at reference...I'm not sure on the answer to that.

Klipsch speakers are pretty efficient, which makes them easier to drive, so if they were my speakers I would listen for clipping and not worry about it, but up to you on what you feel comfortable with.
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post #53708 of 53710 Old Yesterday, 03:27 PM
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Originally Posted by Ladeback View Post
I was just on their website and didn't see anything about a A/B Amp and a D amp. I did see that at 8 Ohms channels 1-5 will be 140 watts and the Remaining 2 6 watts if that's what you mean?
I guess I saw it in the reviews and not explicitly stated on their website... my fault!

Anthem uses traditional Class AB amplification for the five main channels and Class D topology for the back surround and height channels where ultimate full-bandwidth sound quality plays a less important role, which presumably keeps the chassis a bit cooler when the unit is running full bore. https://www.soundandvision.com/conte...pxr18yA4STJ.99

The other channels (the surround backs and four overhead channels, as they would likely be configured in most systems) are Class D, 60 watts each into eight ohms and 75 watts into six ohms. This is Anthem doing the reporting, by the way, which tends to be quite conservative, so take that for what you will. https://hometheaterreview.com/anthem...iver-reviewed/

The Anthem MRX 1120 sits at the top of the Anthem receiver lineup. As the model number implies, it supports 11 channels of amplification inside of the chassis. To accomplish this it uses 140 watt Class A/B amplifiers for the five main channels and smaller 60 watt Class D amplifiers for the rears and Atmos/DTS:X channels. https://referencehometheater.com/rev...ceiver-review/

It's not obvious to me why Anthem doesn't describe that on their website, though.


Quote:
Wouldn't he have to turn it up pretty far for it to clip? That would be to load for me, but I am old and to much hearing loss so I don't crank it anymore.
That's my understanding, and it was his concern, too. Seems like you have to be pretty extreme in both volume and low wattage for this to really manifest itself... but I'm no expert.

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post #53709 of 53710 Old Yesterday, 04:25 PM
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Originally Posted by Jaad View Post
YES!!!! that is exactly what I am worried about. There is an awful lot on the reverse overpowering speakers with too big an amp but very little about under powering speakers. I will try to use your search criteria. maybe I will get better luck at finding info on the subject. thanks a bunch mate.
Quote:
Originally Posted by Ladeback View Post
No I am confused. Is the A/B amp and the D amp plugged into the 1120 to power the fronts and the back channels? If you have anything plugged into the receiver to power the speakers that is a separate. Are you referring to switching in and out of 2 channel for music to going 5.1 or 7.1? The Anthem like other AVR's will only put out 140 per channel to the front main speakers when in stereo. When you switch to going 5.X to 7.X the power is lowered by a certain percentage and you will not get the full 140 watts out of the front. The other channels are lowered as well I believe. The Klipsch speakers you have should be able to handle what ever the AVR can put out. If it can't you can always get a bigger Anthem 7 channel and 4 channel amp to push more sound, but remember, if you are at 50 watts max, you will have to go to 100 watts to notice any kind of difference.
Quote:
Originally Posted by clarkkent06 View Post
Gotcha (after seeing your receiver). Didn't even know they made such a thing, pretty cool receiver.

Correct, underpowering can cause more damage than overpowering. Which is why it's generally a good idea to overpower than underpower (you can always turn it down). That atmos channels shouldn't draw as much power as the 5 ground speakers, but since you're running them at reference...I'm not sure on the answer to that.

Klipsch speakers are pretty efficient, which makes them easier to drive, so if they were my speakers I would listen for clipping and not worry about it, but up to you on what you feel comfortable with.
Well I;m not worried about me, it;s the other people in the house that might drive the sound too loud and blow the amp lol. Personally myself I would hear it instantly. Now that I am thinking about it here is another question:

My background is with live music. I am a musician. What I learned in time was in order to get the sound that I want to get I have to drive my guitar amp to what I call the sweat-spot. it's a combination where the amp is driving a set of 4x12 speakers cabinet. Anything lower I don't get the drive, bottom end, presence, brilliance and all that. Are klipsch speakers the same? Do they need a certain amount of power to really shine? I don't have enough experience with the speakers yet to really tell.

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post #53710 of 53710 Old Yesterday, 05:31 PM
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Originally Posted by bigapp View Post
Find the Dolby Leaf demo in Atmos and play it. The flutter sound should just circle around you and not jump from speaker to speaker.

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Sounds like a good plan, but I don't know how to carry it out.

I don't know where to look or how to play the Dolby leaf demo, but would like to.
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