Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems What is happening with the G Amps?

Well, after a few hours of playtime I can say for one thing that the G55 gets VERY hot !! You can fry eggs on top of it ;-)

Its power although excellent in quality of sound isn't enough to get the full out the 5* BW Nautilous 804's. But still, what you get is excellent!

Stefan,

Your comments actually are almost the same as mine regarding the quality, appart the ones I wrote above, and the fact that the front glass panel just came off after unpacking (double sided self sticking tape ....)

I managed to set the system up (without the room correction) and upgrade the firmware in less than an hour. I initially (and because I don't want to spend too much again on cables and because I use them allround), I used Supra interconnects. For the BW804 speakers I use ven-den-hull cables (at this time single wired, double wiring is in the process..) As a DVD, DVD-A, SACD source I use the excellent Denon DVD-A11.

For the calibration, I set the front, center and subs at 4 meters, and rear at 2,5 from the listening position all at level +0db (don't know if that is correct yet - I will do a better calibration, room correction etc later on). Room size is 10m by 5m low ceiling and rough walls (basement)

One question to anyone reading this - how on earth can you set up on the G68 a universal DVD player (that plays DVD, DVD-A, SACD, CD etc)???? Initially I set it as 2 virtual devices (one DVD and one SACD) but I am sure there is a better way...



[This message has been edited by kacos (edited 07-06-2004).]

kacos,

I'm assuming that by DVD, you mean using the digital SPDIF output and by SACD you mean the multi-channel analog output.

If that's the case, then there really isn't a better way to do this, because the input selection locks to a physical input.

To make it worse, I have two inputs for SA-CD on my 861v4. One called SACD2 for stereo SA-CDs which applies Trifield to the front L/R stereo pair of the IA45. The second called SACD6 uses the multi-channel definition for IA45. Two devices, one physical input.

Cheers,

John,

Isn't there an option for the G68 to select manually from which physical input to receive the sound? Ie, when you play DVD audio from the six analog cables, when you play sacd from say the 2 analog ones etc??

The way you describe it and I also have connected the two together seems a little primitive to me, when a Yamaha DSP-A2 which is a 7-8 year model has the capability to do by pressing one button on the remote (external decoder)?

You simply connect the DVD digital audio & video to the Yamaha DVD inputs, and the six channel analog to the external decoder input. This way, when you play SACD/DVD-A, and press the external decoder button, you hear sound from the SACD/DVD-A and can still see any images or film that are on the disk..

Costas

Costas,

Use the Phantom source option to create a new source that is stereo only.

There's a phantom icon that you can use to do just that.

Regards,

Hi John,

thanks for the phantom option - I was wondering what it was. However, this is in stereo only. The external decoder option in the Yamaha can be used for either a better signal processor or for a DVD-A/sacd 6 channel analog connection - That is what seems to be missing from the G68. It incorporates a similar digital connection for the G98 I think but not an analog one.

Or am I missing something?

BTW, don't missunderstand my comments - I am new with the Meridian way of life, and am trying to figure out the best way to make it work

Costas

To make it clear again. If you have a universal DVD player you need 3 "virual devices" ? Is that correct?

1. 1 Digital audio/1 video for DVDs
2. 6 analog for SACD+DVD-A / 1 video (for DVD-A)
3. 1 analog stereo for SACD stereo

What if you want to connect a 2nd similar device? you will run out of analog and video ports .....

costas says:


You need this one.


You need this one, but use the video input from the device defined in #1.


Optional. You only need to define #3 if you are going to process the signal. If you are listening to "straight stereo", then a Discrete setting works just fine here. The CC and surrounds will have nothing to sample leaving L/R and, if defined as small, a subwoofer output.

If you want to apply Trifield, or PLIIx or something else that you like then you'd need to define this source.


You would anyway. The phantom source reuses the same physical inputs to create a logical device.

Cheers,

[This message has been edited by John Kotches (edited 07-07-2004).]

[This message has been edited by John Kotches (edited 07-07-2004).]

Now I see ! Many Thanks John. I will try and re-set it tomorrow and see how it works.

Oh, and regarding the power of the G55 - well I made a big mistake. After I redid a speaker calibration and set the speakers at +6db, I got much better response from the system - I guess I have to speed up the proper calibration (with the db-meter etc).. There is more to the setup than I thought.

And again, excellent sound and ease of use (after you set the beast up). Toys for big boys - I like that

Costas

Speaking of G-Amp power, in the G55 manual, it suggests (if you need more power and a 7.1 setup) to use 2 G55 amps (6 channels bridged), so that you get 3 channels of 300W each for the front speakers,and four at 100W for the rear and side ones, or something similar...

I wonder what the difference in heat will be when you derive this much power from the G55 ....

[This message has been edited by kacos (edited 07-07-2004).]

[This message has been edited by kacos (edited 07-07-2004).]

[This message has been edited by kacos (edited 07-07-2004).]

with 2 G55 you can do:
4x300w + 2x150w 6.1 config
3x300w + 4x150w 7.1 config
2x300w + 6x150w 8.1 config
or 10x150w

lots of flexibility from the amp, the 558 had the same but with more power. I would like to know the difference between the 2 in sound thought.

FB

the G55 is 5*100W or or 1*300W+3*100W or 2*300W+1*100W at 8Ohm loads

and 5*160W at 4Ohm loads