Meridian America Meridian 518 manual Display

Using 518 in Hi Fi Systems 17

Shape C uses flat dither and a 9th-order shaper optimised to MAF.

Shape D

Shape D uses high-pass dither and a 9th-order shaper optimised to

MAF.

Shape E

Shape E uses high-pass dither and a 2nd-order shaper optimised to

MAF.

DSP

1.Press DSP to select the primary processing mode. The display will show:

Gain 87

Gain has a flat frequency response, but the level of the signal level is adjusted using a precision dithered multiplication. All the front panel keys are available to specify processing.

1.Press DSP again. The display will show:

Emph 87

Emphasis ensures that the output of 518 is always pre-emphasised according to the 50/15µs CD standard. 518 uses precision DSP to pre- emphasis the signal providing the incoming signal is not already pre- emphasised. If the incoming signal is pre-emphasised the red Emph light indicates this.

Emphasis is the recommended mode for most program material providing the DAC system is correctly designed and uses analogue de- emphasis.

or:

De-Emph 87

De-Emphprovides the CD de-emphasis function to very high precision when the incoming signal is pre-emphasised. You would use this only if you have a DAC which provides digital de-emphasis. This adaptive mode ensures that the output of 518 is never pre-emphasised.

Note Gain functions in Emphasis and De-Emphasis, in fact all the front panel keys are available to specify processing.

Display

1.Press Display key to select between the following display formats

Emph 67

Pre-emphasis option and gain setting, or

ShpB 67

Dither mode and gain setting, or

CD 67

Source and gain setting, or

3MAP, Minimum Audible Pressure, is the appropriate threshold curve for human listeners using headphones.

518 User Guide