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Yes, though with the Fosi V3 I don't think it's possible:
If I'm understanding the review correctly, it seems the gain on the X4800H's internal amp is 28.7dB.
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Denon AVR-X4800H AVR Review
- Thread starter amirm
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When I used my Quad 606's with inline filters for BiAmping - the gain matching was through having two identical amps!...
Later I used the Crown XLS amps, which have both onboard XO as well as gain adjustment...
fritobugger
Active Member
Since Audyessy can adjust the level range by +/- 12dB, that should handle gain matching between the internal X4800H amps and the external V3, right?
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Hmm. If you're using the PC application that may be feasible. Audyssey on it's own (or with the cheap app) can't be made to do a simple shelf filter I don't believe.
Also it just occurred to me: I believe AVRs typically alter the gain structure as you adjust their volume, don't they?
I am considering this 4800 against the nearly identical cinema 40. I have a highly reflective room (big windows, hard floor) and I was thinking that the added filters the marantz has at the end of the processing chain (i am probably stating it poorly) that make the sound a touch warmer would benefit this setup.
Question: would this still be relevant/applicable in a full dirac enabled setup?
Question: would this still be relevant/applicable in a full dirac enabled setup?
90sNintendoKid
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I propose it can be hacked using OCA's A1 or other A1 mods like MJ Custom (which uses the MultEQ app MultEQX).
Marantz has different output stage that Denon does no - HDAM. HDAMs don't really do much for measurements and thus for sound either. C40 has DAC filter that rolls of a bit earlier than Denon's and arguably that could be audible and produce slightly warmer sound (as highs roll of earlier). But good luck hearing the difference. It is measurable but not sure if people could pass double blind test.
Anyway, you can EQ both to what you like if you don't mind using full range EQ. This difference would exist in all cases - no room EQ, Audy or Dirac.
The difference is you can EQ a 4800 to mimic the "warmth" of the C40 whereas you can't make the C40 reference flat due to the filter that is not user adjustable!
Why you could not boost the roll off? Anyway, the difference is minimal on the bench and in practice. This is from Audioholics AV10 bench results - 3db roll off from 15khz to 20khz for filter 2 vs flat filter 1. Marantz has choice of filters in AVPs and C30, but not below that. Not a direct comparison between 4800H vs C40, but would be surprised if these models had it any different that AV10.
Most of us with some age should be honest and admit that in that range we can hear very little if anything at all. With some material I "think" I can hear the slight difference between the filters, but probably just bias
.Are you sure? I would think with Dirac it’s measuring the actual in room response which includes the net result of speakers, amps, room effects, DACs… So then when you set a target curve, all this taken into account to calculate the necessary in inverse filter to achieve the target
I suppose my bias is it's always better for the AVR to be transparent and reference flat for manipulation rather than the other way around!
I suppose it can be imprecisely boosted "back" but I think it may be harder to do than a mathematical roll-off?Why you could not boost the roll off? Anyway, the difference is minimal on the bench and in practice. This is from Audioholics AV10 bench results - 3db roll off from 15khz to 20khz for filter 2 vs flat filter 1. Marantz has choice of filters in AVPs and C30, but not below that. Not a direct comparison between 4800H vs C40, but would be surprised if these models had it any different that AV10.
Most of us with some age should be honest and admit that in that range we can hear very little if anything at all. With some material I "think" I can hear the slight difference between the filters, but probably just bias
View attachment 510486
In “a full Dirac enabled” situation the receiver is far from neutral as the Dirac DSP is engaged modifying the electrical response in order to achieve a target
I don't believe the gain adjustment varies between the internal channel (pre) and the powered channel (power) - what is needed is the ability to match the two....
No audible difference in most cases unless you have very hard to drive speakers and you want to play them very loud.
In normal setup you will rarely draw more than 10wpc. And both will work just fine. x4800h has better DAC performance but that is inaudible also
Current fronts are 86 db sensitivity in 6 ohm. The rears will be 86 in 4 ohm . My current AVR is only rated at like 90WPC and is not 4 ohm rated.
Review and Measurements of Sony STR-ZA1100ES AVR
This is a review and detailed measurements of the Sony STR-ZA1100ES Audio/Video Receiver. It is on kind loan from a local member. It costs US $999. It must have price protection as Amazon price is only $1 cheaper. Being part of the ES series from Sony, one expects good look and feel and...
www.audiosciencereview.com
There is a per channel gain setting. I can set the gain of (for example) the LR to -12, and the gain of the C channel to +12dB independently. If we assume LR are on an external amp, and C internal, then that allows us to set a relative gain difference of up to +/-24dB between the channels. Let's say we need up to +/- 6dB of that to compensate speaker distances and sensitivities, it still allows +/-18dB for amp gain matching.
Unless I've seriously misunderstood what is going on.
That doesn't mean it can't drive 4ohm speakers, but it might not be able to drive them to full power.
So for example - if your AVR is at it's maximum current at 90W into 8ohm, then it will still be able to drive 45W into four ohm wihtout clipping.
However, I think it is likely that the 90W into 8ohm is voltage limited rather than current limited, so it is quite possible that it can do better than 45W in four ohm. Somewhere between the 45 and 90. However, without measurements or a manufacturer rating it is not possible to know exactly where it will get to.
