Total Newbie - Help with taking sub measurements in MiniDSP and REW - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 4 Old 06-28-2020, 12:48 AM - Thread Starter
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Question Total Newbie - Help with taking sub measurements in MiniDSP and REW

Hi there,

I just set up a 9.4.4. setup with an 8805 Marantz.
I have 4 in-wall subs with each having their own amp.
I have one RCA cable from the AVR to the 4x10HD MiniDSP. And then 4 analog out RCA cables to the different amps that power the subs.
I have an HDMI cable from the Marantz to a laptop, and the UMIK to the laptop as well.
I followed the guides to set the mic up and I am able to pick sound up.
However, I seem to be at a total loss when running measurements on the subs.
It sounds like I am getting just the Left or the Right speaker, but not what I am wanting to get out of the MiniDSP and REW - which is just subwoofter alignment of the 4 subs.
From the guides, I set everything to Small in the AVR.
I set all crossovers in the AVR to 250
Base Mode in the AVR to LFE
The MiniDSP has the crossovers on my outputs (1,2,5,6) off so that they are flat, and there is no EQ.
I have my AVR volume to 80. Not sure if this matters.
Range on the measurement set to 10-120Hz
Soundcard set to Java with the Marantz Output.

It seems that when i turn on an output in MiniDSP and take a measurement sweep or just a Pink Noise check on Sub Cal, I pick up the Left or Right speaker and not much else. As you can see from the measurements in the screenshot, all four outputs appear to not be subwoofer focused.

Any help is appreciated. There is so much out there, I am sure I am missing some detail that is breaking this all. Thanks!
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post #2 of 4 Old 06-28-2020, 07:49 AM
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REW subwoofer alignment Video using MiniDSP complete walk through!

https://www.avsforum.com/forum/113-s...k-through.html

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post #3 of 4 Old 06-28-2020, 03:58 PM - Thread Starter
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Thanks - yup that is the one i used.
Funny enough, I went through that video over and over again, and I think I just figured it out. One of the subwoofers was on polarity at 180 degrees and the level mode was variable. I set all the subwoofers to a polarity of 0 and level mode to ref. I set phase to 0 for all subs as well.
I assume this is what is required.
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post #4 of 4 Old 06-30-2020, 12:10 PM
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When using the UMIK (a USB mic), you need to be using ASIO (or FlexASIO), not Java.

Check this guide: Getting Started With REW: A Step-by-Step Guide

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Reply Subwoofers, Bass, and Transducers

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