Gurba Posted April 4, 2018 Share Posted April 4, 2018 Is it possible to use the service input somehow to change x-over setting and startup volume on these speakers? Quote Link to comment Share on other sites More sharing options...
rebuy Posted April 4, 2018 Share Posted April 4, 2018 WHAT ? WHAT DOES THAT MEAN? Quote Link to comment Share on other sites More sharing options...
The History Kid Posted April 5, 2018 Share Posted April 5, 2018 Nope. 1 Quote Link to comment Share on other sites More sharing options...
garyrc Posted April 6, 2018 Share Posted April 6, 2018 Why do you want to change the X-over point? Higher or lower? Quote Link to comment Share on other sites More sharing options...
Gurba Posted April 6, 2018 Author Share Posted April 6, 2018 The speakers play bass really well in the 50hz region and I would like to cross them over at around 40hz when I buy a subwoofer. But if it can't be done it can't be done. Quote Link to comment Share on other sites More sharing options...
garyrc Posted April 6, 2018 Share Posted April 6, 2018 2 hours ago, Gurba said: The speakers play bass really well in the 50hz region and I would like to cross them over at around 40hz when I buy a subwoofer. But if it can't be done it can't be done. There are probably two crossovers involved. You can (must) leave the upper internal crossover alone (1,700 Hz), and crossover to the sub at a deeper bass crossover. There is a RCA line level output to go to a subwoofer on your powered speakers, but I don't know if it just allows the sub to blend with the powered speakers, or uses a low pass filter to send only bass (e.g. below 80 Hz or below 40 Hz, etc.) to the sub or uses a true crossover to the sub. You could always phone or email Klipsch. Some subs have a selection of LPFs on them. Someone else here may have a workaround for you, and/or may recommend a sub that is versatile enough to allow you to bring it in at 40 Hz. The Klipsch powered full range speakers are relatively new, so many of us will be rather ignorant of their details. Welcome to the forum! 1 Quote Link to comment Share on other sites More sharing options...
Gurba Posted April 7, 2018 Author Share Posted April 7, 2018 The R-28PFs have a sub output with optional 80hz x-over. It would be cool with an adjustable x-over since the speakers have decent bass but I guess x-over at 80hz is better than no x-over. 🙂 1 Quote Link to comment Share on other sites More sharing options...
garyrc Posted April 7, 2018 Share Posted April 7, 2018 12 hours ago, Gurba said: The R-28PFs have a sub output with optional 80hz x-over. It would be cool with an adjustable x-over since the speakers have decent bass but I guess x-over at 80hz is better than no x-over. 🙂 I agree. 80 Hz is a very common x-over point. I believe it is what THX recommends, providing the main speakers are good down to 80 Hz. Klipsch must think they are. Even with your x-over at 80 Hz, your R-28PFs will continue to respond below that point. I could be wrong, but I think it would be 12 dB down at 40 Hz. 1 Quote Link to comment Share on other sites More sharing options...
Gurba Posted April 9, 2018 Author Share Posted April 9, 2018 Yes, 80hz is the thx x-over point. But I guess it's because it works with any speaker, small or big. Quote Link to comment Share on other sites More sharing options...
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