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TOPIC: How much boost is acceptable?

How much boost is acceptable? 1 month 2 weeks ago #28207

  • Jscoyne2
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Sorry if making 3 threads is bad. i like to keep line of thoughts separate. When looking at my REW of Left and right response. I have it pretty well matched. This is 8 point averaged on the left side and Eq'd and 8 point averaged on the right side and eq'd

This is a multi speaker system time aligned.





The first pic is Rew of L and R before any DIRAC. The second is a measurement of Dirac is sitting in a car using the Chair measurements. As you can see, i have huge dips and i have no idea why.

The curve is the shape i want to get but my question is. Should i place my house curve in the middle of the measurement and optimize or should i have the curve below the measurement and have everything cut to meet the curve
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How much boost is acceptable? 1 month 2 weeks ago #28212

  • john.reekie
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Is this using one of the miniDSP Dirac Live boxes?
I am not miniDSP support.

"You must ask the right questions." - Dr. Alfred Lanning's hologram.
-> Have you read the User Manual??
-> Have you drawn and posted a diagram?
-> Have you posted a screenshot?
-> Have you posted your config file?
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How much boost is acceptable? 1 month 2 weeks ago #28218

  • grosso
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Hello Jscoyne2,

Did you use the same area of measurements with both method ?
What you see might be the power response, do you cross the mids around 1.2/1.4Khz?
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How much boost is acceptable? 1 month 2 weeks ago #28226

  • Jscoyne2
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john.reekie wrote:
Is this using one of the miniDSP Dirac Live boxes?

No this is the software based on a computer. I turned off my time alignment and the big notch around 300hz went away but the one around 1.5khz stayed.

My ACOUSTIC xovers are
sub 0-90
midbass 90-380
midrange 380 to 6.6khz
tweet 6.6 upwards
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How much boost is acceptable? 1 month 2 weeks ago #28227

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grosso wrote:
Hello Jscoyne2,

Did you use the same area of measurements with both method ?
What you see might be the power response, do you cross the mids around 1.2/1.4Khz?

no i didnt use the same measurement points. Just seems weird to me that i still get a close resemblance of my house curve but with a giant dip at 1.5khz and nowhere else.
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How much boost is acceptable? 1 month 2 weeks ago #28242

  • john.reekie
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Jscoyne2 wrote:
john.reekie wrote:
Is this using one of the miniDSP Dirac Live boxes?

No this is the software based on a computer. I turned off my time alignment and the big notch around 300hz went away but the one around 1.5khz stayed.

My ACOUSTIC xovers are
sub 0-90
midbass 90-380
midrange 380 to 6.6khz
tweet 6.6 upwards

Hi, it's just that that is a very unusual (to me) curve. you have something like a 30 dB swing. I thought maybe it's the microphone you are using. I can't help wondering if you are EQing only to mask engine noise?
I am not miniDSP support.

"You must ask the right questions." - Dr. Alfred Lanning's hologram.
-> Have you read the User Manual??
-> Have you drawn and posted a diagram?
-> Have you posted a screenshot?
-> Have you posted your config file?
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The following user(s) said Thank You: devteam

How much boost is acceptable? 1 month 2 weeks ago #28281

  • devteam
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@ Jscoyne2

mmmh, something doesn't jive here on your measurements (else it must sound "VERY" boomy in your car with such response).
Can we please start simply and try to make a measurement of the UMIK-1 with REW (making sure the USB is plugged all the way) of a known "linear environment" .e.g. a Hifi speaker maybe (not a car).

Something is wrong on that measurement (or your car is all bass and nothing else).. I think we're looking maybe at the wrong curve as John implies.. :-)

Devteam
MiniDSP, building a DIY DSP community one board at a time.
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How much boost is acceptable? 1 day 19 hours ago #29048

  • grosso
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Did you continue to explore on this Jscoyne2?
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