I know this isn't recommend, but I tried it anyway. - AVS Forum
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post #1 of 16 Old 10-30-2013, 09:21 PM - Thread Starter
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I've been using my BIC F12 and I love it, but I bought two HTIB in the past that came with Onkyo branded subs. So I have had two of those just lying around serving no purpose because people told me not to mix subs of different brands.

Well, I got really bored last weekend, so I found some y adapters and plugged them all up. I turned the Onkyo subs to about 1/2 volume on the back and they're crossed over at 120hz. The room sounds SO MUCH BETTER. I was kinda shocked, but I had the most amazing movie experience of my life after adding those, what I thought to be lackluster subs with a pretty good sub. I just thought for anyone who has some old subs lying around that took the advice of others without trying it for yourself, that it might be a good idea to give it a shot. You might be pleasantly surprised like myself

My room looks kinda like this


.....................................................................................................................................
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. onkyo sub polk m60 polk cs2 polk m60 bic f12
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. onkyo sub
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. polk m50 surrounds
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post #2 of 16 Old 10-30-2013, 10:29 PM
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I use the f12 and then my htib klipsch sub I got awhile back. Not ideal, but it definitely helps even out the sound from the f12. I'll eventually buy another f12 or similar 12 inch to replace the klipsch though

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post #3 of 16 Old 10-31-2013, 08:35 AM
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Quote:
Originally Posted by hpman247 View Post

people told me not to mix subs of different brands.
They were wrong to do so. Almost any two or more subs together will sound better than either alone, between adding output capacity and smoothing room modes. They just probably won't sound as good as matched subs.

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post #4 of 16 Old 10-31-2013, 08:41 AM
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I would also suggest not mixing a totally crapy sub with a better sub.

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post #5 of 16 Old 10-31-2013, 08:43 AM
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I agree you shoulsnt mix bad and good subs, different driver sizes etc. But as long as it sounds better than a single sub its worth jt

Onkyo TXSR607, Mythos 8 Center, Studio Monitor 350's, Klipsch S-10 surrounds, Bic F12 sub

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post #6 of 16 Old 10-31-2013, 11:57 AM
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Originally Posted by steve nn View Post

I would also suggest not mixing a totally crapy sub with a better sub.

Or, if you do, set the crappy sub to only output in the frequency range where it is not so crappy. smile.gif

My two 12" Athena subs are crappy compared to most subs spoken about here, and certainly compared to my 4x18" IB setup. But, hi-passed at 30 hz and not turned way up, they add some extra mid bass and kick to the room. So if you don't stress them, and keep distortion low - even a crappy sub can be beneficial.

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post #7 of 16 Old 10-31-2013, 12:22 PM
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Quote:
Originally Posted by GoCaboNow View Post

Or, if you do, set the crappy sub to only output in the frequency range where it is not so crappy. smile.gif

My two 12" Athena subs are crappy compared to most subs spoken about here, and certainly compared to my 4x18" IB setup. But, hi-passed at 30 hz and not turned way up, they add some extra mid bass and kick to the room. So if you don't stress them, and keep distortion low - even a crappy sub can be beneficial.

How can you do this?I have two sub outputs but I can only set it up as one single sub. How can I cut off the scrappy sub from playing lower than it should?

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post #8 of 16 Old 10-31-2013, 01:23 PM
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Quote:
How can you do this?I have two sub outputs but I can only set it up as one singlesub. How can I cut off the scrappy sub from playing lower than it should? 

Ditto this question, I was wondering the same thing.

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post #9 of 16 Old 10-31-2013, 01:27 PM
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You need an external DSP device or an active sub with HPF.

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post #10 of 16 Old 10-31-2013, 04:58 PM
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Quote:
Originally Posted by braveheart123 View Post

You need an external DSP device or an active sub with HPF.

Or a high pass filter that just fits on your coax cable. Parts Express sells them, or used to, for $20ish - IIRC?

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post #11 of 16 Old 10-31-2013, 05:04 PM
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How good are the hpf on the coax cables?

Onkyo TXSR607, Mythos 8 Center, Studio Monitor 350's, Klipsch S-10 surrounds, Bic F12 sub

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post #12 of 16 Old 10-31-2013, 09:19 PM - Thread Starter
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I'd also like to know how to use a HPF for the two lesser quality subs. I just have them all daisy chaines with y-adapters to the single sub output at 120hz. I'd love to be able to limit the two Onkyos from producing anything below 35ish

"Knowledge is Power... But...Wisdom is the effective application of knowledge."

Onkyo TX-SR705

Polk M60 - Front

Polk CS2

Polk M50 - Surrounds

BIC F12 Sub

2X Onkyo SKW204 Subs

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post #13 of 16 Old 10-31-2013, 10:31 PM
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post #14 of 16 Old 10-31-2013, 11:18 PM - Thread Starter
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Since I have 3 subs hooked into the same pre out, if I plug one of these directly into the back of the Onkyo Sub, and another into the back on the Onkyo sub, and connect them daisy-chained as they are now, it won't affect my current F12 that can handle lower than 30hz, right?

"Knowledge is Power... But...Wisdom is the effective application of knowledge."

Onkyo TX-SR705

Polk M60 - Front

Polk CS2

Polk M50 - Surrounds

BIC F12 Sub

2X Onkyo SKW204 Subs

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post #15 of 16 Old 11-01-2013, 05:53 AM
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Quote:
Originally Posted by hpman247 View Post

Since I have 3 subs hooked into the same pre out, if I plug one of these directly into the back of the Onkyo Sub, and another into the back on the Onkyo sub, and connect them daisy-chained as they are now, it won't affect my current F12 that can handle lower than 30hz, right?
It won't affect the F12 other than that you must be sure that they aren't run at a high enough level to distort before the F12 does.

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post #16 of 16 Old 11-01-2013, 06:12 AM
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Quote:
So if you don't stress them, and keep distortion low - even a crappy sub can be beneficial



Lol.. Not sure how crappy your talking about, but I’m talking pretty crappy. That being that, I’m sure we have different approaches and that’s cool, it’s all good. cool.gif
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