Super Mini/H Frame Measurements

mkane · « **on:** 21 Dec 2022, 08:51 pm »

At it again and I've finally plugged my 200Hz hole. Extremely satisfied.

whydontumarryit · « **Reply #1 on:** 21 Dec 2022, 09:32 pm »

What are you showing here? Whatever it is I want it. Who wouldn't?

mkane · « **Reply #2 on:** 22 Dec 2022, 03:13 pm »

Seems I have more work to do yet. I'm going to cross the H-frames much lower.

mkane · « **Reply #3 on:** 22 Dec 2022, 10:34 pm »

Crossed @ 130Hz. It's better.

Jaytor · « **Reply #4 on:** 22 Dec 2022, 11:29 pm »

What are you using to control the crossover frequency? Are you changing the high-pass to the Super-Mini?

I'd recommend changing your vertical scale to make it easier to see response errors.

mkane · « **Reply #5 on:** 23 Dec 2022, 01:37 am »

I'm just twisting the knobs on the Rythmic plate amps. I have the Subs plugged into line in on the plate amps and I'm wondering if they should be going to HPF out? Thanks

mkane · « **Reply #6 on:** 23 Dec 2022, 01:38 am »

^^^^that looks horrible when the vert. scales changed.

Jaytor · « **Reply #7 on:** 23 Dec 2022, 01:57 am »

I found with my Line Forces (same drivers) that I got the best results with the sub amp crossovers set close to the highest frequency. The Super-Minis will need to cross over a bit higher since you've only got one NEO10 to work with. I'd suggest setting the sub crossovers to the max frequency, turning off the amps to the Super Minis, and then play with moving the sub around a bit to get the maximum response in the 180-220Hz range. Then turn on the Super Minis and adjust the phase control on the subs to get the smoothest response around the crossover region. Then you can use the PEQ if needed to smooth the bass response out.

I was able to get a pretty flat response with the sub to the outside and a few inches behind the plane of the baffle of the Line Forces, with the sub phase control set in the middle (around 90 deg phase shift). PEQ off.

nlitworld · « **Reply #8 on:** 23 Dec 2022, 02:23 am »

I have a similar issue in my room of a null from 100-200 so I run my subs essentially full range to try and fill in. My left speaker response is a little more unruly than my right, but they both suffer the same dip to some extent.

mkane · « **Reply #9 on:** 23 Dec 2022, 02:30 am »

I'm stuck as far as speaker/sub placement goes.

This measurements with cross @ 120Hz

nlitworld · « **Reply #10 on:** 23 Dec 2022, 03:05 am »

And what if you run the sub full range?

mkane · « **Reply #11 on:** 23 Dec 2022, 01:44 pm »

Quote from: nlitworld on 23 Dec 2022, 03:05 am

And what if you run the sub full range?

Help me here. How is this done?

nlitworld · « **Reply #12 on:** 23 Dec 2022, 02:41 pm »

Instead of setting the knob on your sub crossover at 120hz, turn it up to max which will essentially not limit the sub on the high end. It should allow the sub to continue playing into the 150-200hz range and fill in that little dip there. It probably won't fix the 200-300 entirely but it won't be bad. I've seen several rooms where there is the 150 low and a 300-400 bump in room response so you're not alone in that regard.

mkane · « **Reply #13 on:** 23 Dec 2022, 02:54 pm »

I'm on it. Won't be able to take any measurements until after Christmas.

Our speaker room is a very open space with high ceilings. Very difficult to treat. Seems as though everything we threw at it has little effect. Bass traps, diffusers, acoustic panels. They're up because we paid for them but when there removed measurements stay the same. All is well.

Thanks

HAL · « **Reply #14 on:** 23 Dec 2022, 05:21 pm »

Just listen to it before and after to start.

You should hear improved vocals and midrange instruments like guitar and violin with the range you are adjusting.

mkane · « **Reply #15 on:** 23 Dec 2022, 10:12 pm »

If it gets better than it is I'll never leave the house.

mkane · « **Reply #16 on:** 23 Dec 2022, 10:13 pm »

Still not sure about running sub full range when the dial goes from 25-120Hz.

Jaytor · « **Reply #17 on:** 23 Dec 2022, 10:25 pm »

Quote from: mkane on 23 Dec 2022, 10:13 pm

Still not sure about running sub full range when the dial goes from 25-120Hz.

I think that is where it starts to attenuate. On mine, when I set it to max, the sub was only down a few db at 200 Hz.

HAL · « **Reply #18 on:** 23 Dec 2022, 10:30 pm »

Full range in your case is setting the Frequency control to 120Hz. That is the maximum low pass cutoff frequency of the servo amp.

mkane · « **Reply #19 on:** 23 Dec 2022, 10:35 pm »

Thanks fellas.