Official Denon AVP-A1HD/AVP-A1HDCI and POA-A1HD/POA-A1HDCI owners thread. - Page 682

Originally Posted by rnrgagne

With two subs, and assuming your mains are crossed-over to them, the benefit of passive bi-amping is even less significant, so pretty much a waste of wire really.
You can bridge channels to get more power, but the question is do you "need" to? Your room, speakers, and their distances to the listening position will dictate the answer to that.

Surround channels don't use much power at all, so maybe keeping the RDA-7 and picking up a modest five or seven channel amp for those might be the ticket. Something like a used Anthem PVA 5 or 7 would be what I'd hunt for.

Originally Posted by tangcoma

Thx for your suggestion ! So I will keep my RDA 7.1 and just wait for the AVP upgraded !

Originally Posted by jackox

Still from my experience there can be a drawback using big power to some channels and not to the others.
I got my KWA150SE in bridge mode that makes 450w @8ohms (manufacturer rates). Then the RDA7, said to be 7x150w but measured between 170 to 188w. I ran the Audyssey Pro but got -12db for the main front channels and that is not good as the auto-calibration cannot go beyond the -12 nor above + 12db. In order to solve that problem I wired up my good old Audiocontrol spectrum analyser and setted all channel up to 80db SPL.
So beware when using different amps and different speakers (my case).

Originally Posted by rnrgagne

I don't think that the -12db would be just from amplifier gain difference, or watts. I'd suspect some boundary gain or a speaker efficiency difference is in play.
My mains are powered at 500w/ch and my surrounds at 125/w channel and the only problem I had with anything getting cut to -12db were my IB subs powered at 250w. Obviously the most efficient of the bunch, but also they were on-wall under my screen so just like being corner loaded..

Originally Posted by danielo


As you can see we all have ideas , For me it only makes sense to even considering bi-amping the 3 fronts that take the most power. The reason why the 10 channels on the POA are so nice is that most will go for a 7.x setup use 6 amps for the fronts and 4 for the surrounds. This is why your question is not a easy one and why i (if you like your current amp) look for more of the same model/brand. Unless you want to get 1 POA you might run into troubles outlined by jackox.

Let us know what your plans are, i am interested where you end up .

Getting 11 mono amps to me is overkill in space, a multichannel amp's best feature is its 'relative' small size even if we talk POA its SMALL per amp

Daniel.

Originally Posted by jackox

Of course its amp + speaker.
Before I had my two KWA150SE I had only one KWA150 I used in stereo.
In that setting the amp is rated at 150w and I had -9 db for the front speakers which worked perfect..

Originally Posted by rnrgagne

I missed the bridged part, I've never had an amp you could bridge, so I guess you must increase gain by doing so...

I'm familiar with the 12db limits of Audyssey and had to deal with it myself with the IB subs. But it's not a bad idea to point that out for those that aren't.
It's way more common with subs because most have variable gain.

Originally Posted by WillyJ

If anyone else is as anal as I am, here is a link to an EXCEL spreadsheet where you can keep track of your AVP settings. It has some drop down menus and it is "pretty cool" (thus sayeth Hanna Montana).

http://attachments.wetpaintserv.us/2...07g%3D%3D19255

This is courtesy of http://avppoaowners.wetpaint.com/page/Setup

I have my settings on 3x5 cards now but with the upcoming upgrade, I might do the Excel thing and also take a bunch of screen shots to make sure I get it back to where it is now. I'm sure some of the menus will change with the new update but at least I'll have a starting point instead of doing it all over from scratch. Will also have something to compare to.

Originally Posted by grassy

Hi guys, it's been a while since I have posted here and my avp is going fine.I have only just switched my source ps3 to bitstream and found that the sound is much louder than PCM does this sound right to you guys or is it just my ears playing tricks on me.I noticed I had to adjust my mains left and right up to +1db.since switching to bitstream I have noticed a big difference in my sub which is also deeper. I have had this unit for a year now and is the first time I am hearing this unit through bitstream audio. I am blown away looking forward to the upgrade.

Originally Posted by grassy

Hi al, I have filled out an application form and faxed it to audio products group and am waiting for a phone call to let me know when I can take the avp in. I will definitely be taking it down personally and then picking it up the next day and bringing it home. I am pretty rapt with the unit at the moment. There is no product I have ever owned that has pleased me more than this avp. It's the real deal. I also took a page out of your book and got myself a new dd15+ sub and when hooked up to the avp they make a fine pair. I am still using the vsxax10 as my amp and it is doing a very good job as it has plenty of power. Still saving for the poa. I feel an inheritance coming on so I think I,ll have that soon.

Originally Posted by WillyJ

Anyone out there running a tube type phono preamp through the AVP? I just bought a Rega P9 and a Fosgate tube stage and I am hearing a sort of static clicking sound when I turn the volume up or down. It does it with both the remote control and the knob on the AVP.

It only does it with the needle on the record. I am running in pure direct analog mode.

This is my first heavy-duty tube stage and I am wondering if what I am hearing is simply tube noise as the gain increases/decreases or if I have a problem somewhere.

It isn't very loud but I can definitely hear it and do not remember having it there before the TT and phono stage upgrade.

Any thoughts or suggestions are appreciated.

Originally Posted by egrady

Try a different input. Use or disconnect the ground on your phono cable depending on which way you are now. Try a different power recepticle. Float the ground on the plug of the phono stage.

If none of these work, call for an airstrike!

Originally Posted by WillyJ

As a follow-up, I have been trying to troubleshoot this thing and I found that the static or clicking sound virtually goes away when I turn Audyssey to OFF. Is this weird or what?

Anyone have any insight to what is going on here?

EDIT: It occurred to me this might be DYNAMIC VOLUME at work and there might be something with the gain of the preamp and Dynamic Volume interacting somehow. Don't have time to tonight to look into that further but will get to it tomorrow night or over weekend. But if anyone has some other ideas, please let me know. At least I think I have it narrowed down.

Originally Posted by WillyJ

As a follow-up, I have been trying to troubleshoot this thing and I found that the static or clicking sound virtually goes away when I turn Audyssey to OFF. Is this weird or what?

Anyone have any insight to what is going on here?

EDIT: It occurred to me this might be DYNAMIC VOLUME at work and there might be something with the gain of the preamp and Dynamic Volume interacting somehow. Don't have time to tonight to look into that further but will get to it tomorrow night or over weekend. But if anyone has some other ideas, please let me know. At least I think I have it narrowed down.

Originally Posted by WillyJ

I played with this more last night and this morning. It wasn't DYNAMIC VOLUME (am not using that) but Dynamic EQ that was ON and it definitely was adding to the noise/static/clicking when the volume was changed. Turning DYNAMIC EQ OFF, I can now only hear the clicking during dead quiet passages with the volume turned up pretty high but even then, it is a very light sound.

I put my old Pro Ject Tube box (only 2 tubes) back in place, and did not hear it at all so it probably is something in the Fosgate: Either all those tubes magnifying something, interference or perhaps one or two of the tubes are making a slight grainy noise for every volume tick up or down.

I can live with it now as it has been greatly reduced by turning Dynamic EQ off but I will probably do some tube rolling in the near future to see if has any affect. Someone also suggested relocating the Fosgate tube stage but I really can't move it. I may try some shielding just to see if it might be an interference issue.

I would be interested to hear from any other AVP owners that are running tube gear through the AVP to see if they can reproduce the clicking. Best way to check is at the end of an LP by either rotating the volume knob up/down or use the remote control. You would hear a slight clicking noise for every volume increment change. I have to get it up above -29 to hear it on my rig.

Originally Posted by alebonau

hi willy, thats fantastic, was just wondering what to do in prep for the upgrade and something like this is excellent