Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems Please list your Speaker types and Phase

There's more!

I am playing a play on BBC7 (DAB) which is Mono.

I switched to Ambisonic so all speakers working in a Balanced way.

Then I turned off the centre speaker, and was able to position myself central to the left Front and rear speakers with a really good stereo image at the left side.

This worked for the right side as well.

I dont know what that tells us but I think perhaps somthing must be correct there.

I will try it again with the rear phase set to + later, but its looking good as it is.

Cheers, Chris

George, heres my setup (from memory so I might come back later for more accuracy)- note actual distances are rounded to nearest 1/2 foot as the M software demands.

Left Front: DSP 8000, 14' 6" actual distance, Positive Phase, -2.5dB, during calibration I found I got a higher SPL on my RS meter making the distance 13'6"....

Center: DSP 7000, 14'6" actual distance, Positive Phase, -2.0dB, during calibration I found I got a higher SPL on my RS meter making the distance 13'6"....

Front Right: DSP 8000, 14' 6" actual distance, Positive Phase, -2.0dB, during calibration I found I got a higher SPL on my RS meter making the distance 13'6"....

Side Right: DSP 7000, 8'0" actual distance, Positive Phase, -4.0dB, cant remember if I changed this during calibration... more later...

Rear Right: DSP 8000, 11'0" actual distance, Positive Phase, 0.0dB, no change to the distance during calibration

Rear Left: DSP 8000, 11'0" actual distance, Positive Phase, -1.0db, no change to the distance during calibration

Side Left: DSP 8000, 7'6" actual distance, Positive Phase, -3.5dB, ant remember if I changed this during calibration... more later...

best regards,
Jerry

George,

Here you go (everything calibrated with SPL):

DSP5200 Front Left: 7'6"/0dB/+ Phase
DSP5200 Center: 8'6"/-1.5dB/+Phase
DSP5200 Front Right: 7'6"/0dB/+Phase
DSP3100 Rear Right: 6'6"/0dB/+Phase
DSP3100 Rear Left: 8'0"/0dB/+Phase

Nick

Here are mine:

Front L: Kef Reference 1.2 + 557, +ve
Front R: Kef Reference 1.2 + 557, +ve
Front C: Kef Reference 200C + 505, +ve
Rear L: Mission D70S + Arcam P75, +ve
Rear R: Mission D70S + Arcam P75, +ve
Sub: M2500, -ve

(just in case any power amps are inverting, I'd recommend us old timers stick the amps in too).

Thanks to average_mph for popping round and giving his seal of approval!

Cheers,
Mark.

10'6" DSP 7000 Left Front - Phase Positive
10'6" DSP 7000 Right Front - Phase Positive
10'0" DSP 5500HC Center Front - Phase Positive
07'6" DSP 5000 Left Rear - Phase Positive
06'0" DSP 5000 Right Rear - Phase Positive

Mark; very enjoyable, you have a great sounding system.

17" DSP8000 LF - Positive
15.6" DSP5500 HC- Positive
17" DSP8000 RF - Positive
11" DSP7000 LR - Positive
11" DSP7000 RR - Positive

Then again, I've nevered played with the Phase, as I assumed a digital spkr should be all + (by default).

I patiently await someone with all negative speakers and a postive centre to suggest a swap...Doh!

FL DSP5200 :12'6" +ve -0.5db
FC DSP5200H :12' +ve -3.0db
FR DSP5200 :12'6" +ve -0.0 db
Sub SW5500 :12' +ve -16.0db
SL DSP5000 :7' +ve -3.5db
SR DSP5000 :5'6" +ve -2.0db
RL DSP5000 :7'6" +ve -3.0db
RR DSP5000 :6' +ve -4.5db

My M-s have never been negative to me...

ken

In case you're wondering, I can't reach 75db with my lowest output speaker; I cal everthing down to it's 72db level...

double post - sorry

Too funny.

An interesting thought, My room is very narrow 3 mtrs deep and very wide. 0.5 ratio.
My Rears need to be Neg phase. (As far as I can tell)
My friend Darren has a 596/561 with DSP5000C and M60's with M33's rear. His room is very much deeper and larger. Checking phase revealed Plus all round.
Could the close proximity (In my case) of front to rear speakers have a major bearing on the Phase front to rear?

Cheers, Chris

Chris

My room is of similar dimensions and I also have the speakers set up in the non traditional sense, i.e. centre is on the longest wall hence firing across the room as opposed to down. My listening position is close to the opposing wall.

I don't think this should have a bearing on the phase between front and rear but would surely emphasise an incorrect setup.

Having spoken to Meridian today, there is nothing unusual about your current phase setup, nor mine for that matter.

You think it sounds better so stick with it.

Regards

Jezclayton

If you're ever in Berkshire and fancy a visit e-mail me on jezclayton at btinternet dot com.