YAMAHA RXV-2400 REVIEW

[Guest]

<font color='#000000'>I have the Yamaha RXV-1400. I see on your review of the 2400 that it has seperate adjustable level controls for DVD-A and SACD. How do you adjust these just for DVD-A and SACD and does this also work on the 1400?

Thanks,

PAT</font>

 

[gene]

<font color='#000000'>SoftEng;

Thanks for the clarification on &quot;Room Size&quot;. &nbsp;I will update my review accordingly. &nbsp;As for Master Volume Level max setting, it is independent of speakers. &nbsp;All I did was crank the volume all the way up with no source, certainly I wouldn't listen at that level!

Patrick;

To vary channel trims via EXT inputs, simply select &quot;Ext Input&quot; and adjust the levels there. &nbsp;These settings are independent of other modes of operation.

Dave;

Thanks for confirming &quot;Presence&quot; active preamp out to achieve 9.1 with external amp. &nbsp;That is excellent.

Ross;

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Quote </td></tr><tr><td id="QUOTE">Gene,
I know that the listed power consumption on the back of the unit says 500 watts. &nbsp;However, I believe that many other factors determine the actual output of the unit, and not just the listed power consumption. &nbsp;Are you saying that this is the only way you came up with the 80x5 wattage specs with the remaining 400 after the processors, etc. get their power? </td></tr></table> &nbsp;

The power consumption listed on the back of Yamaha receivers is not a max rating. &nbsp;Last time I spoke with them on this, they told me it was a typical power rating with all channels driven at certain %. &nbsp;I will ask them to comment in my addendum to the review.


<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Quote </td></tr><tr><td id="QUOTE">
Also,
I didn't quite follow what you were saying about the ultrasonic frequencies not showing up in the 10 band PEQ. &nbsp;When I've seen the EQ results from others on the web, I've seen boost or attenuation only at the frequencies that needed it. &nbsp;For instance, one speaker may have EQ adjustments at certain frequencies, but another my have almost completely diff. results. &nbsp;You can compare the front L and R channels in your review to see what I'm refering to. &nbsp;The second freq adjusted is 80 on L, and 160 on R. &nbsp;The third adjusted freq on L is 315 while it is 250 on R. &nbsp;I was just trying to figure out why yamaha was adjusting frequencies (ultrasonic) that I can't even hear anyways. </td></tr></table>

I originally thought the PEQ was only 7band based on the resultant read outs. &nbsp;Yamaha has informed me that 3 of the bands are not shown and operate beyond 20kHz. &nbsp;I am assuming this is for noise shaping, or sqaushing &nbsp;ultra sonic harmonics, but again I am guessing. &nbsp;This is yet another question I will pose to them.</font>

 

[Guest]

<font color='#000000'>I guess the 2400 is different than my 1400 in this respect or I am just missing something. All I see in the Ext. Inputs menu is 6 or 8 channel, and asking me if I want LFE to go to front or sub, etc. Nothing about changing levels. If this is true I would have spent the extra to get this feature on the 2400 instead of my 1400.

Thanks,

PAT</font>

 

[gene]

<font color='#000000'>Patrick,

Unfortunately I no longer have the RX-V2400 hooked up to step you through it. &nbsp;Perhaps other owners here can help. &nbsp;I believe where you change the &quot;on the fly&quot; channel trims by selecting level in the lower panel of the remote and thumbing through it is where you can do it.</font>

 

[Guest]

<font color='#000000'>Thanks for your help. I looked at the 2400 manual online and saw the same thing as I see on my 1400. Nothing about adjusting the levels only for the Multi Channel Inputs. The reason I am asking this is I would love to be able to raise the levels only through th Multi Channel Inputs as mine are low with my Pioneer DV-45A Universal Player. I have the 45a setting as as high as it can go for LFE (and the other speakers a lot lower) but the Bass is still lacking. So I adjust the LFE through the Sound menu, but that changes all the inputs. I will try calling Yamaha I guess to see what they say.

Thanks again,

PAT</font>

 

[Guest]

<font color='#000000'>I'm still not sold on the full 9.1.

When I do a sound test, with the presence speakers going
through the &quot;surround back/presence&quot; pre-out RCA,
and then to an external amp:

1. When playing the rear surrounds, sound is heard through both the rear, and presence
2. When playing the presence, sound is heard through only the presence speakers

I would think that in secenario (1), the sound should be heard only through the rear channels

Anybody have a logical explanation, or is 9.1 not truly capable?
The manual for the 2400, page 20, says &quot;Each PRE OUT jack outputs the same channel signal as the corresponding speaker terminals. However, when both surround back and presence speakers are connected to this unit, the channel of the signals output from SURROUND BACK/PRESENCE PRE OUT jacks may not correspond to the location of the speakers connected through SURROUND BACK/PRESENCE PRE OUT JACKS

What is this supposed to mean?</font>

 

[Audioholics]

<font color='#000080'>It means Yamaha needs to have us write their manuals... we keep telling them... &nbsp;

</font>

 

[Dubauskas]

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Guest : <font color='#000000'>Thanks Dub.

So I would only need a single 2 channel amp to do this 9.1?  

thanks,
Ross.</font>

<font color='#000000'>Yup.</font>

 

[Dubauskas]

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Guest : 1. When playing the rear surrounds, sound is heard through both the rear, and presence...I would think that in [this] secenario , the sound should be heard only through the rear channels

As far as I can tell the presences are always playing no matter what mode DPIIx or THX, or DSP Cinema modes....  Now the rears only play with with EX encoded DVD's.... or  when DPIIx is engaged.</font>

 

[Dubauskas]

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Guest : <font color='#000000'>Anybody have a logical explanation, or is 9.1 not truly capable?
The manual for the 2400, page 20, says &quot;Each PRE OUT jack outputs the same channel signal as the corresponding speaker terminals. However, when both surround back and presence speakers are connected to this unit, the channel of the signals output from SURROUND BACK/PRESENCE PRE OUT jacks may not correspond to the location of the speakers connected through SURROUND BACK/PRESENCE PRE OUT JACKS

What is this supposed to mean?</font>

<font color='#000000'>Ya the manual is pretty bad in explaining this, but the 9.1 is truly there! &nbsp; I tested it with LOTR Fellowship (Fireworks Scene) this is a DD Ex disk. &nbsp; I had my ear up to the presences speakers and heard them work.... then re-wound the disk to the same spot, and had my ears up to the back surrounds, and heard them exhibit sound as well. &nbsp;

I further experimented with the DSP modes... the Sci-fi mode really emphasised the rear surrounds, the adventure mode less so.

There is also a parameter that lets you assign &quot;priority&quot; to either the presence channels or the rear surrounds.... &nbsp;as far as I could tell it made which ever one you selected louder but did not eliminate one or the other... that is you still got sound from both!

Cheers - Dave</font>

 

[Audioholics]

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Dubauskas : <font color='#000000'>As far as I can tell the presences are always playing no matter what mode DPIIx or THX, or DSP Cinema modes...</font>

<font color='#000080'>On my old RX-V3000 the presence channels only engaged when the DSP modes were activated (i.e. 70mm, 8-ch surround, stadium, etc). Standard DD 5.1 or DTS keeps them off (and rightly they should).

People (including me) would fume over not being able to do strict 5.7/7.1 with the presence channels connected.

I am fairly certain the new receivers work the same way.</font>

 

[Guest]

<font color='#000000'>Thank you for your review and a clarification of some of the issues that were raised from the HT Magazine review. &nbsp;I have ordered this receiver from my local dealer and can't wait to &quot;fire it up&quot;.</font>

 

[Guest]

<font color='#000000'>Dubauskas, can you try doing a sound test and see if you get sound coming from only the rear and only the presence at the appropriate times. Maybe something is different on your setup than mine. Thanks.</font>

 

[gene]

<font color='#000000'>Guys;

I am assembling a list of questions to submit to Yamaha engineering based on your forum responses. &nbsp;If you know of people in other forums as well, please inform them of this and tell them to send their questions my way.

As for &quot;Presence&quot; &nbsp;these channels should only be active when engaging a Yamaha DSP mode. &nbsp;THX should not qualify for this.</font>

 

[SoftEng]

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gene : <font color='#000000'>As for Master Volume Level max setting, it is independent of speakers. &nbsp;All I did was crank the volume all the way up with no source, certainly I wouldn't listen at that level!</font>

<font color='#000000'>Hi Gene,

Sorry if I wasn't clear. I believe that the Yamaha setup level calibration is designed to produce a reference test tone level of 75 db in the room when the Yamaha volume control is at zero db. &nbsp;The full range of the volume control goes up to about plus 16 db, however depending on the efficiency of your speakers, it may not be able to drive them to that level. &nbsp;In that case, you would see a lower maximum volume level such as you saw.

- Bill</font>

 

[gene]

<font color='#000000'>Bill;

I guess I am still not following you. &nbsp;Disconnect all speakers and simply max out the master volume control and read the display on your TV. &nbsp;All I was stating is that at full volume, the bar was not full. &nbsp;This is independent of any speaker connection or reference level and is strictly an operational issue, which really has no bearing whatsoever on performance or such. &nbsp;Just something I noticed.</font>

 

[SoftEng]

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gene : <font color='#000000'>I am assembling a list of questions to submit to Yamaha engineering based on your forum responses.</font>

<font color='#000000'>Gene,

I have some questions:
1) you mentioned that the YPAO has 10 bands of correction, three of them being above 20kHz -- that seems strange, why would you need correction above 20kHz?

2) why does the YPAO sometimes correct the same frequency more than once? &nbsp;I've seen it select the same center frequency of 400 hz three times on one of my my surrounds.

3) why does the YPAO equalizer usually select at least one frequency above 10kHz when optimizing for bass?

4) can you configure the YPAO equalizer settings using the RS-232 port interface? Is the RS-232 to software available yet?

If I think of any other questions I'll let you know.

- Bill</font>

 

[SoftEng]

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gene : <font color='#000000'>I guess I am still not following you.  Disconnect all speakers and simply max out the master volume control and read the display on your TV.  All I was stating is that at full volume, the bar was not full.  This is independent of any speaker connection or reference level and is strictly an operational issue, which really has no bearing whatsoever on performance or such.  Just something I noticed.</font>

<font color='#000000'>Gene,

When you calibrate the Yamaha levels, you calibrate to 75 db. &nbsp;This sets a reference level. &nbsp;So, a zero db volume setting on the receiver would sound identically loud at your house as at my house.

The receiver can only drive the amplifiers to a certain power level. &nbsp;Above that there would be distortion. &nbsp;Since the receiver knows how much power it takes to achieve the reference level, it can prevent you from setting the volume higher than the level at which distortion would start to occur. At your house, with your speakers, this is 9 db; at my house, with my speakers, it is 14.5 db.

Does that make sense? I am not positive that this is the way it works, I am hypothesizing.

- Bill</font>

 

[gene]

<font color='#000000'>Bill;

I see where you are coming from, but don't believe the Yamaha is that sophisticated to determine that.  However, I could be wrong, thus I will pose this to them.

Please also realize that due to holidays and up and coming CES show, their response may not surface until mid January or so.</font>

 

[gene]

<font color='#000000'>OK here are the questions I have come up with based on everyones feedback. &nbsp;Please let me know if I left anything out!

Yamaha RX-V2400 Audioholics.com Review Addendum

1) Is it possible to run a full 9.1 set-up by preamp outing the “Presence/Surround Back” outputs to an external amp? &nbsp;If so, how should the receiver be configured to achieve this?

2) Please explain the low power measurements in the most recent Home Theater Magazine review.

3) Please explain what the impedance selector switch actually does.

4) Please explain what the “Room Size” feature does.

5) Please explain how the PEQ is 10 bands when the user only observes 7 adjustable bands.

6) The user manual doesn’t state how to independently adjust channel trims for the External multi-channel analog inputs. &nbsp;Can you please explain and verify this feature exists.

7) Is the reason why the Master Volume max level is limited to +9dB a function of achievable THX reference levels with my speaker set up?</font>