DIY Dual 12 inch ported vs Rythmik FV15HP - Page 2 - AVS Forum | Home Theater Discussions And Reviews
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post #31 of 40 Old 01-31-2014, 01:27 PM
 
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Originally Posted by braveheart123 View Post

Rumbling and tactile sensations have more to do with sub 30Hz region. That's the area where, IMO, dual Rythmik FV15HP have staggering amount of power in 2 ports/14Hz extension/rumble filter on/ low damping. I just couldn't get that hard hitting chest slam, which is in 30Hz-60Hz region.

I know you know this, in the 30hz to 60hz octave, according to Data-Bass, a single FV15HP is 115dB to 118dB capable. With a second FV15HP, co-location, cabin gain and anything else one wants to throw into the pot, a pair of FV15HPs is more than capable.

...confused.gif

What's your room measurement graph like in this region? IIRC, you're running a single as opposed to a pair of FV15HPs?

(for EQ purposes we have XT32/SubEQ HT, using REW for room measuring and running the FV15HPs in one port mode, rumble filter on in 14/hi mode)

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post #32 of 40 Old 01-31-2014, 01:35 PM
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The FR is roughly the same compared to my DIY alpine car sub in the same spot in my room. Rythmik of course has more power 25Hz and below but alpine hits much harder in the chest slam region.

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Main System: PSB X2T, PSB XC, PSB XB, Cambridge Audio Azur 751R, Rythmik FV15HP, PSB S500
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post #33 of 40 Old 01-31-2014, 01:38 PM
 
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Originally Posted by braveheart123 View Post

The FR is roughly the same compared to my DIY alpine car sub in the same spot in my room. Rythmik of course has more power 25Hz and below but alpine hits much harder in the chest slam region.

Do you have a measurement graph of your room that you can post?

The reason I ask, it reads as if your sub's output is being killed by the acoustics in your room in the 30Hz to 60Hz range.

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post #34 of 40 Old 02-03-2014, 08:04 AM - Thread Starter
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Well if you go for an amp with built-in DSP e.g. iNuke DSP models, you do not need an external EQ device. Unbalanced means the potential difference in resistance between both ends of an unbalanced cable is not fixed. For small runs (up to 50 feet), there is no difference between balanced and unbalanced cable in terms of signal transfer.

So I could pick up an iNuke1000DSP along with either rca female to XLR male adaptor or an rca male to xlr male cable adaptor? I currently have a Y splitter from the sub out on my receiver, so I would hook up the two adapters to the Y splitter to get the signal sent to the external amp? Then I would just need to EQ the subs using the external amp and not Audyssey in the Denon? Am I on the right track?

Display - LG OLED
Receiver - Denon
Speakers - Klipsch
Subs - Rythmik
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post #35 of 40 Old 02-03-2014, 08:32 AM - Thread Starter
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Also, since my receiver does not have a 12v trigger am I going to have manually turn on and off the iNuke when it's not in use? Sorry for all the questions. I actually am trying to look this stuff up online as well.

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post #36 of 40 Old 02-03-2014, 11:58 AM
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So I could pick up an iNuke1000DSP along with either rca female to XLR male adaptor or an rca male to xlr male cable adaptor?

Yes
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I currently have a Y splitter from the sub out on my receiver, so I would hook up the two adapters to the Y splitter to get the signal sent to the external amp?

Yes, if you are running two subs.
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Then I would just need to EQ the subs using the external amp and not Audyssey in the Denon?

That is personal preference. I like to keep things in my hand when it comes to subs. You let audyssey do its thing then tame the sub response using PEQ filters in iNuke. Or do it the other way around, which Audyssey recommends. See which yields better results for your ears.

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Main System: PSB X2T, PSB XC, PSB XB, Cambridge Audio Azur 751R, Rythmik FV15HP, PSB S500
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post #37 of 40 Old 02-03-2014, 12:02 PM
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Also, since my receiver does not have a 12v trigger am I going to have manually turn on and off the iNuke when it's not in use?

Yes. I manually switch it on and off. Though there is thread on this forum to DIY auto on/off a pro amp.

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Main System: PSB X2T, PSB XC, PSB XB, Cambridge Audio Azur 751R, Rythmik FV15HP, PSB S500
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post #38 of 40 Old 02-03-2014, 12:10 PM - Thread Starter
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Thank you for clearing up some of these things.

Display - LG OLED
Receiver - Denon
Speakers - Klipsch
Subs - Rythmik
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post #39 of 40 Old 02-03-2014, 12:26 PM
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Make sure your iNuke is the last unit to turn on when you switch on your system and it should be the first to switch off when you turn off the system or else you will hear a loud pop, which may damage your driver.
It's LIFO - Last In First Out

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Main System: PSB X2T, PSB XC, PSB XB, Cambridge Audio Azur 751R, Rythmik FV15HP, PSB S500
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post #40 of 40 Old 02-03-2014, 12:36 PM - Thread Starter
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Whoa very good to know. I would probably have cried if I went this route and that happened to my driver.

Display - LG OLED
Receiver - Denon
Speakers - Klipsch
Subs - Rythmik
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