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Best way to hook up multiple subs

478 Views 3 Replies 3 Participants Last post by  TumaraBaap
All my subs\\speakers are Kilpsch. I have two 15's and two 10's. I had planned to use the two 15's for the LFE and the two 10's for surround (one for each channel).

My question is: whats the best way to hook the subs up? My amp has pre-out's for all channels so I can go line level to each sub. I can also go speaker lvl to the surrounds and use it's internal crossover to better match my surrounds.

The other idea is to run LFE to the two 15's via RCA line lvl, and BOTH the LFE and surround info into to the two surround subs...LFE via RCA 'Y'd" in line with the two 15's and the surround info via the receivers' speaker OR line level outputs.

Depending upon how I hook the subs and surrounds, I would have to change the amp crossovers accordingly. I plan to run the fronts in Large even with the 15's since they are KLF-15's.. they each have two 12's.


If anyone had equipment available to test different setups and lived in the Atlanta area...I would be more than happy to try and compensate your time some how if you didn't mind coming over and running through a few setups. :cool:
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"Best" is always a subjective call in a situation such as this. For example, creating a more unified response for a seating area could be one metric. Or you could follow Griesinger's (lexicon) phased stereo sub argument. Additionally the type of source material and the listening style that is predominate could be the most influential. (speed metal in a party enviroment) There are many.

One thing will need to be dealt with in any event and that is the room acoustic modal response. This is even more fun with multiple sub placement. As mentioned many times in this forum, rarely is the placement of the L&R mains for good imaging the same as placement for sub(s) to provide say a smoother response as a metric.

For these reasons the beginning DIY'er is encouraged to run all speakers small, utilize the bass management function and re-direct all of the bass to mono sub(s) which are placed to meet the metric.

Once you get comfortable with that, then you can start playing. By no means do I suggest that other setups won't be to your liking, rather that there are a large number of ways to end up chasing your tail with a multiple sub setup.

One place to start reading is click white papers under: http://harman.com/about_harman/techn...eadership.aspx
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THanks for the reply. I guess I was hoping for a magic bullet setup suggestion...but apparently that is a pipe dream. :eek:

I read many posts last night and came away with the understanding there is essentially NO way to do a multiple sub, multiple bass trap setup WITHOUT some kind of software.

Currently, I plan to make the meager investment of a RatShack Analog meter and utilize the free Room EQ Wizard software mentioned on these forums. I have the Digital SPL meter with the RCA output, but I don't think it works with the software. (I am fuzzy on that point.)

Finally, I understand the reasoning behind running all speakers in small, but I don't know if I can get myself to throw away thousands of dollars paid for the large KLF-15's....just for simplicity sake. I would be almost willing to throw away the two 15's before disabling the bottom half of my towers. :eek:
Your mains will still play upper bass, only cleaner. It's the end result that should matter. The overall setup will just be better directing most bass to optimally placed subwoofer(s). Now that you're getting into measurement and analysis, check it out for yourself. Frequency graph of bass played from multiple less than ideal positions usually resembles the EKG of a patient undergoing a heart attack!

Tumara Baap
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