ptalar said:
I wish somebody would tell me step by step how to perform that trick. I have the AVIA HT set up disk and a Radio Shack SPL meter but I am not sure of the exact step by step process of correctly setting up my sub. It sounds great the way it is, but could it sound better? That is the question. Anybody know how to dial in a sub with these two tools with a Yamaha AVR?
Phil
Starting from scratch, as is you have just taken delivery of the sub,
- Put the sub at precisely your intended listening position
- With the Yamaha, set all speakers to small and for sound level, set the sub at approximately -10 dB
- Put the Yamaha on standby and install the interconnect cable from the Yamaha to the sub. Power ON the sub and the Yamaha
- Set the sub's Gain up to one third.
- Select something to play which contains a good amount of bass, and play it
- Crawl on your knees from the side front to the side rear of your listening position and see where the bass sounds best (meaning the bass sound "seems" to be coming from the front speakers and have the best tone to your ear). That should be the location of your sub.
- Transfer the position of the sub to where the bass effect was best, as determined above
- Now you are ready to calibrate. To do so, set the SPL at 70 dB (Weighting at "C" and response at "Slow")
- Play the AVIA DVD and select audio calibration
- Set Master Yamaha volume at -30 dB (or another volume setting of reference) and adjust all speakers for a level that provides a SPL reading of 70 dB, except that in the case of the sub, make your level adjustment so that the SPL reading is 78 dB.
- Replay the AVIA for speaker level testing and with your SPL at your ear level and pointing in front of you, see if the readings are at 70 dB and your sub at 78 dB. Adjust if necessary.
Play music and see if you get a good blend. Play a movie with good LFE content (Flight of the Phoenix being a good one) and see if you get good results. If necessary, you could slightly increase the sub's Gain for the perfect setting to your ear. In my case the Gain is now set at close to one half up.