EliasGwinn
Member of the Trade: Velidoxi & Benchmark Media Systems
- Joined
- Feb 26, 2007
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If it is working with 192 kHz going into the Toslink, then you have the 192 kHz update.
Best,
Elias
Best,
Elias
has anyone compared the benchmark dac 1 usb to the hiface usb?
thanks
Originally Posted by Bmac /img/forum/go_quote.gif
I was just wondering if you could elaborate on how and what differences John was able to measure in different cables and the subjective impressions of the measured differences if any. It would be great to hear what an independent third party like yourselves was able to find.
[size=small]Pot Rotation[/size] | [size=small]L (Volt)[/size] | [size=small]R (Volt)[/size] | [size=small]Imbalance (dB)[/size] |
[size=small]9 o'clock[/size] | [size=small]0.024[/size] | [size=small]0.021[/size] | [size=small]1.160[/size] |
[size=small]10 o'clock[/size] | [size=small]0.108[/size] | [size=small]0.1[/size] | [size=small]0.668[/size] |
[size=small]11 o'clock[/size] | [size=small]0.272[/size] | [size=small]0.26[/size] | [size=small]0.392[/size] |
[size=small]12 o'clock[/size] | [size=small]0.497[/size] | [size=small]0.488[/size] | [size=small]0.159[/size] |
[size=small]13 o'clock[/size] | [size=small]0.825[/size] | [size=small]0.817[/size] | [size=small]0.085[/size] |
[size=small]14 o'clock[/size] | [size=small]1.303[/size] | [size=small]1.289[/size] | [size=small]0.094[/size] |
[size=small]15 o'clock[/size] | [size=small]1.735[/size] | [size=small]1.71[/size] | [size=small]0.126[/size] |
[size=small]Maximum[/size] | [size=small]1.899[/size] | [size=small]1.871[/size] | [size=small]0.129[/size] |
[size=small]Calibrated[/size] | [size=small]1.271[/size] | [size=small]1.272[/size] | [size=small]-0.007[/size] |
Balance is adjustable, but is factory preset to high accuracy. It is unlikely that the setting has been lost, so please check the following before adjusting the balance control:
1) Make sure that all 4 XLR output attenuator jumpers are set identically. This is this most common cause of an imbalance. Factory preset is 20 dB.
2) If you are using the XLR outputs, insure that a normal listening level is achieved near a 12 o’clock volume control position. If normal listening levels are not obtained near 12 o’clock, change the XLR output attenuator settings. XLR outputs can be adjusted over a 30dB range to optimize the gain-staging between the DAC1 and your power amplifier.
a. If normal volume is achieved well below 12 o’clock, increase the attenuation (i.e. change from 20 dB to 30 dB).
b. If normal volume is achieved well above 12 o’clock, decrease the attenuation (i.e. change from 20 dB to 10dB or 0 dB).
3) If you still have an imbalance, reverse the L and R XLR connectors. If the imbalance does not change, the amplifier balance is mismatched. If the imbalance move to the opposite speaker the DAC1 may need adjustment.
To adjust the DAC1 HDR L/R balance, we recommend using an accurate calibration recording and a meter:
1) Set the volume control at 12-o’clock. For maximum accuracy, press "MUTE" on the remote, then press "On" on the remote to allow the motor to drive the pot clockwise to 12 o'clock.
2) XLR outputs should be measured between pins 2 and 3 of the XLR outputs.
3) If the L and R outputs measure differently, adjust the L/R BAL pot. This is the 9-turn pot located directly behind the right-hand headphone jack.
4) Output should now be well balanced when the volume control is above 9-oclock.
5) Below 9-oclock some volume-control imbalance is normal as the volume control goes approaches full off.
6) Caution: Do not attempt to set the balance control with the volume control at a fully clockwise position (errors will be large). Set balance only when the volume control is at 12-o’clock.