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#288234 - 2019-10-06 19:16 Setting up a DSW
Registered: 2008-12-20
Posts: 331
Anthony 123 Offline
Hitchhiker
Anthony 123 Offline
Hitchhiker

Registered: 2008-12-20
Posts: 331
Loc: Scotland
Hi

When doing speaker config I can set all speakers except the DSW to 75 SPL.
The DSW will only go to 65 SPL @ 0dB.

When I come to room correction all speakers go to 50 dB but the DSW only too 25 dB. Config states that the level should be 37 dB.

Is this standard or is there a way of setting the DSW to 75 dB in speaker set up.

Any advice welcome.


Tony
861v6+OE34+LPS+ID41, HD621, MC200, DSP7200.2, DSP5200HC, M6, DSW, Sky HD, BDP103.
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#288235 - 2019-10-06 19:49 Re: Setting up a DSW [Re: Anthony 123]
Registered: 2002-08-28
Posts: 4,512
Mr Meridian Online content
President of the Imperial Galactic Government
Mr Meridian Online content
President of the Imperial Galactic Government

Registered: 2002-08-28
Posts: 4,512
Loc: Perthshire, Scotland
Hi Tony

If you are using a radio shack meter, they are less accurate at low frequencies, so your subwoofer is likely to be subject to an artificially low reading.

It's a long time since I had a sub in my system, it was a Rel Stentor 3. If memory serves, when it got anywhere near the same dB level on the meter in calibration, it was subjectively way too loud in use. I dialled it back in small increments until it sounded properly integrated, and was happy with the results thereafter.

The other thing I'd note is that if all of your DSPs have to be reduced in volume to achieve 75dB, you're throwing away resolution. I think it makes more sense to calibrate the system on the quietest reading DSP. That means with all the trims set at 0dB, whatever speaker shows the lowest reading (even if above 75dB), bring the rest down to get in line with that.

Cheers

George

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#288244 - 2019-10-07 06:27 Re: Setting up a DSW [Re: Mr Meridian]
Registered: 2004-08-07
Posts: 7,814
Ian Offline
President of the Imperial Galactic Government
Ian Offline
President of the Imperial Galactic Government

Registered: 2004-08-07
Posts: 7,814
Loc: Surrey, England, UK
iirc there may be a 'recalibration' sheet for the RS SPL. This problem was well understood so I think you should be able to find some docs on it. Point of note is that the calibration tones are not single frequency.


Meridian owner since 1992
Prime & PSU, Focal Elear headphones, roon (ROCK 8Gi5 Nuc), Explorer 1 & 2, F80. 200/203, MC200 and various Sonos.
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