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post #41 of 70 Old 04-14-14, 11:27 AM Thread Starter
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Re: Need help planning a DIY sub build

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Mike P. wrote: View Post

Why 2 iNukes?

Should have been more clear. The iNuke 3000 is 50 dollars less than the iNuke 3000 DSP model. So the DSP in the amp adds 50 to the cost, whereas the miniDSP costs 125 not including the cost of the additional cables and plug in.

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areyou4real wrote: View Post
No to the adapter to split your single LFE output; it is not necessary. The single LFE output from the AVR is fed to a single miniDSP input. That single input is then duplicated internally using the miniDSP plug-in to two mono outputs. Those two mono outputs are then manipulated/EQ'd the using the plug-in. Those two miniDSP outputs then serve as the inputs for the amp's L & R channels to drive each sub individually.
True, but if I dont get the miniDSP then I need to double my LFE outputs since I would be going straight to the iNuke.

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areyou4real wrote: View Post
FYI: Most AVRs do not have two unique LFE (.2) outputs. Higher-end AVRs sometimes do, but they likely already have Audyssey SubEQ functionality (independent EQ of two subs), so there is less to be gained by using a miniDSP in the first place.
Depends on what manufacture you go with. There is YPAO (Yamaha), MCACC (Pioneer), Audyssey (Denon, Marantz, Onkyo, Integra), ARC (Anthem), Sherwood (Trinnov), and Harman Kardon has their own as well that I forget. Depending on the EQ you may or may not get individual or summed response.

Next year I have the go ahead to consolidating my AVR & Amps to a Pioneer SC model, and they use MCACC which doesnt EQ below 63 hz (as of now, rumor is this years model will). And MANY Audyssey XT models are still lacking SubEQ IIRC.
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post #42 of 70 Old 04-14-14, 12:14 PM
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Re: Need help planning a DIY sub build

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then I need to double my LFE outputs since I would be going straight to the iNuke.
That would be done with a RCA Y adapter.






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post #43 of 70 Old 04-14-14, 01:26 PM Thread Starter
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Re: Need help planning a DIY sub build

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That would be done with a RCA Y adapter.


I know. Ive got a couple of those already.

I am moving next year to a Pioneer Elite which will have 2 sub outputs.

But those models while they do have decent Auto Calibration, dont EQ the sub, hence my looking at trying to get that done now. Plus my existing EQ (2EQ) doesnt do ANYTHING with the sub besides set level and distance.
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post #44 of 70 Old 04-14-14, 09:01 PM Thread Starter
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Re: Need help planning a DIY sub build

Can someone model the D4 in the Martycube and show excursion? I want to make sure I am not going over XMas.

I dont think I am but want someone with more skill than I do to verify.
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post #45 of 70 Old 04-15-14, 09:07 AM
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Re: Need help planning a DIY sub build

It can handle 1000 watts with a HPF at 18 hz, the estimated SPL is in post #10.




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post #46 of 70 Old 04-15-14, 09:50 AM Thread Starter
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Re: Need help planning a DIY sub build

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It can handle 1000 watts with a HPF at 18 hz, the estimated SPL is in post #10.
So you mean the drivers wont exceed xmas until above 1000 watts correct? Also the graph in post 10 was for duals correct?
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post #47 of 70 Old 04-15-14, 10:22 AM
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Re: Need help planning a DIY sub build

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So you mean the drivers wont exceed xmas until above 1000 watts correct?


As long as you have a HPF at 18 hz or higher.

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Also the graph in post 10 was for duals correct?
No, it a single 15" in 5 cu.ft. tuned to 20 hz which is the net volume and tuning frequency of the Marty sub.





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post #48 of 70 Old 04-15-14, 10:59 AM Thread Starter
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Re: Need help planning a DIY sub build

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Mike P. wrote: View Post
As long as you have a HPF at 18 hz or higher.
Gotcha.

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Mike P. wrote: View Post
[LEFT]
No, it a single 15" in 5 cu.ft. tuned to 20 hz which is the net volume and tuning frequency of the Marty sub.
Cool. Thanks for the help!
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post #49 of 70 Old 04-15-14, 01:56 PM
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Re: Need help planning a DIY sub build

And since they are D4's they need to be wired together for a 4 ohm load which is easier on the amp.




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post #50 of 70 Old 04-15-14, 02:54 PM Thread Starter
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Re: Need help planning a DIY sub build

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And since they are D4's they need to be wired together for a 4 ohm load which is easier on the amp.
Are you saying I need to daisy chain these together like this amp --> sub 1 --> sub 2?

I thought they were a 4 ohm load by default?

**nm** see they are dual 4 ohm DOH....

Can't I just run them a 2 ohm and then limit the iNuke to only give em 990 watts or would that NOT be suggested?

If I run them both off the same channel then I have to EQ them summed rather than independent... or am I missing something?

Last edited by EndersShadow; 04-15-14 at 03:06 PM.
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