2nd Subwoofer Suggestions, Please!

[snakeeyes]

So the processing is mainly for the subwoofer(s) - correct? Something like this: https://www.minidsp.com/products/minidsp-in-a-box/minidsp-2x4

I would then need to purchase the UMIK-1 and REW if I am properly gleaning the info or can any of it be controlled by an app on an iPad (I believe I saw something about this) and updated accordingly?

Look at page 13 in the manual of the miniDSP 2x4

 

[John Parks]

Look at page 13 in the manual of the miniDSP 2x4

This looks like fun - thanks!

 

[lovinthehd]

Hmm, I do not know if understand your comment. the "35%" is an estimate from looking at the volume pot on the sub - is that what you were referring to? Yes, it is true that there was no "official calibration" as I do not have the tools to do so and all unofficial calibration was done by ear.

Hard to know from your description of how you've set the gain on the sub for your pre-amp's output level. It's not really a volume setting and not one where eyeballing the the "percentage" of the dial's position means anything.

 

[John Parks]

Hard to know from your description of how you've set the gain on the sub for your pre-amp's output level. It's not really a volume setting and not one where eyeballing the the "percentage" of the dial's position means anything.

Well, the sub output from my integrated amp is variable in that it mirrors the volume control - no other adjustments are available (i.e., it is "fixed" in that regard - just not in the classic pre out sense of being fixed, to be clear as mud). Yamaha specs the subwoofer output at 3.5V and the fixed crossover is 90 Hz. Yes, the "35%" from eyeballing the volume pot on the amp plate of the subwoofer is meaningless without a basis of comparison, but that's all I got...

Here is a (very) crude illustration:

The red line represents where the volume is set today. If each long dash represents 16.66% (with the middle dash at 12 o'clock being 50%) then the volume is set at approximately 35%. Now, I do not know how accurate the volume pot is, how linear the increase as it is turned and if the 50% mark represents 50% power, but, there we are.

Further settings: Phase: 180; Operating Mode: EQ 2; Q Control: 0.3; Crossover Frequency: Approx. 60 Hz; Crossover: In

 

[lovinthehd]

Well, the sub output from my integrated amp is variable in that it mirrors the volume control - no other adjustments are available (i.e., it is "fixed" in that regard - just not in the classic pre out sense of being fixed, to be clear as mud). Yamaha specs the subwoofer output at 3.5V and the fixed crossover is 90 Hz. Yes, the "35%" from eyeballing the volume pot on the amp plate of the subwoofer is meaningless without a basis of comparison, but that's all I got...

Here is a (very) crude illustration:
View attachment 26616

The red line represents where the volume is set today. If each long dash represents 16.66% (with the middle dash at 12 o'clock being 50%) then the volume is set at approximately 35%. Now, I do not know how accurate the volume pot is, how linear the increase as it is turned and if the 50% mark represents 50% power, but, there we are.

Further settings: Phase: 180; Operating Mode: EQ 2; Q Control: 0.3; Crossover Frequency: Approx. 60 Hz; Crossover: In

I know what a typical sub plate amp looks like, thanks. Not unusual to set a sub amp with gain in that general area either. It may more follow a particular range of gain adjustment it may resemble more a volume control of 0-full....but you set it so that it gets necessary pre-amp output level to utilize the sub's amp fully, any more than that is unnecessary. Fixed line level is usually only used for recording devices, it's somewhat useless for a sub as then you'd constantly have to change the "volume" on the sub manually to match your speakers.