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DD51 Setup
-Donald1800
Ok, guys. Here is the result of analyzing many pages of e-mail info. from Klipsch on the 'practical' use of the 4 Prologic modes selectable from the display panel.
1. ProLogic Disable - Use this setting when
a. Using digital/optical input with Dolby Digital/DTS encoded media.
b. Using ANY input and you want only stereo (not even simulated surround)
2. ProLogic Enable - Use this setting when
a. Using digital/optical input with ProLogic media, or stereo media and you want to simulate surround by utilizing naturally recorded delay or reverb. This setting is overridden if a Dolby Digital/DTS signal is detected, so this is a safe bet for full time use.
b. Using analog inputs (Line, Aux1, Aux2) with TV, etc, that transmit programming in Dolby Surround, or simulating surround sound by utilizing naturally recorded delay or reverb. This unit does a great job simulating surround sound with few noticeable artifacts. Again, a safe bet for full time use.
It's my personal opinion that the following two modes should be ignored.
3. ProLogic Auto - This mode CAN NOT detect ProLogic from ANY analog input source (Line, Aux1, Aux2. No 'tagging' or 'flagging'). The only Auto switching occurres with the digital inputs (coax./Opt.) with ancient and rare material/media encoded with DD2.0.
4. All PCM - A redundant limited subset of the 'Enable' mode.
So, there you have it. A simple selection of 'ProLogic Enable', or ProLogic Disable'. I've found that 'ProLogic Enable' works great for me 100% of the time. Enjoy.
Here is a fast way to estimate the delay for the SL/SR speakers when using the DD-5.1 decoder that allows this adjustment. Sound travels approx. 1 ft. per millisec (ms). The estimated delay time is the distance in ft. from the front speakers to your ears, minus the distance in ft. from the rear speakers to your ears, times 1 ms, rounded to the nearest whole number. An example, L=14ft R=13ft, R/L avg.=13.5ft SL=6ft SR=5ft, SLSR avg.=5.5ft. 13.5-5.5=8 8X1ms=8ms delay. If you want to be truly accurate, calculate the left side separately for the SL delay, multiplying by .92ms, then the right side for SR (X.92ms). Round to the nearest whole number. SL=7ms, SR=7ms If you want to include the center speaker in your calculations, its the distance in ft. from the R/L speakers, minus the distance in ft. from the center speakers times 1ms (.92ms). 13.5-12.5X.92=.92ms, or 1ms. Thats all folks.
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Donald1800:
As I understand it, the application of the Bass Configuration for Klipsch speaker systems are as follows:
Bass Conf. 1 Small speaker mode. Used for other brand speakers with small single transducers (speakers)
Bass Conf. 2 2.1 (stereo)
Bass Conf. 3 4.1
Bass Conf. 4 5.1
Andy W (Klipsch tech rep):
#1 is indeed "small" mode for all 5 satellites. In this mode the DD-5.1 is doing the bass management, like any preamp/processor does, only that the frequency of the crossover is fixed. The ProMedia 5.1 does it's own bass management, which is why "large" mode is recommended.
#2 is "large" mains and "small" center and surrounds.
#3 is "large" mains and surrounds and "small" center.
Bass Config. Off is all satellites in "large" mode.
--> for the ProMedia 4.1 the recommended setting is "BASS CONFIG. OFF" (all sats "large") and "SPK C OFF" (using the Cen button on the remote). Turning off the center speaker mixes the center channel into the front left and right for a phantom center channel. Also turn off the sub output ("SPK SW OFF").
--> for the ProMedia 2.1 the recommended setting is "BASS CONFIG. OFF" and "SPK C OFF" and "SPK SUR OFF" (using the SL/SR button on the remote). Turning off the surround speakers mixes the rear channels into the fronts. Also turn off the sub output ("SPK SW OFF").
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Now from Justin...
Here is the back of the DD51 for those who do not have one yet.
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