please help connecting sw-8mk2 - AVS Forum
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post #1 of 9 Old 05-14-2013, 05:06 PM - Thread Starter
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hi

i just got the sw-8mk2 sub and i'm not sure of the correct method to hook up to a sony str-k790.

my receiver only has one sub out (sw-8mk2 has left and right inputs) and dosent say PRE-amp.(sonys sub that came w/receiver wasn't powered)

you can see the back of str-k790's jacks by google image search


please help me

i just got the set about 20 mins ago and dying to hear them but i want to make sure i don't ruin sub

Thanks
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post #2 of 9 Old 05-14-2013, 05:33 PM
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I'm going to go out on a limb here and suggest that the Pioneer sub's owner's manual tells you how to hook up the sub. Most likely, it will recommend connecting to either the L or the R input or, using a Y-splitter, to both inputs.

(If it says nothing, that usually means that you can connect to either the L or the R input, or to both inputs.)
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post #3 of 9 Old 05-14-2013, 05:59 PM - Thread Starter
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the manual says to hook up 1 of 3 methods
1-2 use rca out preamp jacks on receiver but i dont have any.
3rd method says speaker wire and suggests using the Front right and Front left outputs of receiver (sounds weird to me)

should i do that share the Front outputs with my sub along with the Front l+r tower speakers ?

i do have a sub-woofer out on my receiver but its a wired connection and only one out , should i use that instead and just connect to one side of sub input

thanks for helping me through this
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post #4 of 9 Old 05-14-2013, 06:01 PM
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Yes, you should be fine to connect to either the L input, the R input or to both inputs. (But start with L or R, and only use both if neither one of those two works.)
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post #5 of 9 Old 05-14-2013, 06:15 PM - Thread Starter
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it says that left and right jacks on sub should be shared and connect to the front left and right channels on receiver.
so the front right speaker output should goto the front right speaker and the right side of sub and same with the left out should goto front left speaker and left input on sub
and ignore the sub out on receiver

sry for being so clueless
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post #6 of 9 Old 05-14-2013, 06:18 PM
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In that case, I'd get an inexpensive Y-splitter - from your local dollar store or from Monoprice.com - and split the signal from your AVR's subwoofer output to both the L+R inputs on the sub.

-- Edit --
Never mind - I just Googled the AVR and it has speaker-level subwoofer outputs for a passive sub, not an active (powered) sub.

In that case, my first thought is: It's time to upgrade the AVR.

-- Edit...again --
My second thought - which may not be a very good one, so I hope someone else chimes in on this thread soon! eek.gif - is:
- run speaker level connections from the L+R speaker outputs on your AVR to your L+R main speakers;
- run speaker-level connections from the L+R speaker outputs on your AVR to your sub; and
- use the "crossover" knob on the sub to blend the sub with the mains.
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post #7 of 9 Old 05-14-2013, 06:22 PM - Thread Starter
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that sounds alot better to me.
i wonder why the manual suggests sharing the front outputs ?

off to the store i go

thanks eljaycanuck


"My second thought - which may not be a very good one, so I hope someone else chimes in on this thread soon! eek.gif - is:
- run speaker level connections from the L+R speaker outputs on your AVR to your L+R main speakers;
- run speaker-level connections from the L+R speaker outputs on your AVR to your sub; and
- use the "crossover" knob on the sub to blend the sub with the mains."


ok i ll wait awhile and see if anyone else has any suggestions

thanks for your time
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post #8 of 9 Old 05-14-2013, 07:44 PM - Thread Starter
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Update

i hooked it up sharing the front left and right outputs , it sounds great!!

the manual says that the frequency dial should be set at 40-70 hz if sharing outputs with the pioneer towers and higher for the bookshelf speakers ,but it has more bass if i set frequency to about 120

will this higher setting hurt anything ?

THANKS again
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post #9 of 9 Old 05-15-2013, 09:43 AM
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Look for the -3dB point of your speakers and set the sub's "crossover" (actually a low-pass filter, or LPF) 10Hz to 20Hz higher than that point. Then experiment with raising and lowering the LPF to find the setting that best blends with your mains.
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