A wild Horn out of Africa - Page 3 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #21 of 27 Old 12-06-16, 01:25 AM
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Re: A wild Horn out of Africa

Nice build! Love the plexiglass hatch!

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post #22 of 27 Old 12-07-16, 06:18 AM Thread Starter
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Re: A wild Horn out of Africa

Thanks BP1Fanatic.
I think it will do well especially in extension (14-15Hz).
I've acquired a DCX2496 but am still looking to buy an avr with 120-150 watts out of each speaker channel to be able to keep up with this sub SPL-wise. Also trying to get a 600 watt pro amp and perhaps a RadioShack spl meter for basic measurements.

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post #23 of 27 Old 12-07-16, 10:53 PM
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Re: A wild Horn out of Africa

If you have a smart phone the Decibel meter apps are surprisingly close to actual dedicated SPL meters.

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post #24 of 27 Old 12-08-16, 05:00 AM Thread Starter
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Re: A wild Horn out of Africa

That's surprising to hear!
Robbo are you sure about this?
I'm was under the impression that these apps are unreliable because of difficulty in calibration of phone and apps.
I've got lots of Samsung android smartphones (mine and other family members) and Android apps are mostly free. Do you have any particular one you've had experience with?
I've been eBay surfing.,there's the Sony Strdh550 avr which comes cheap, new in-box with the remote control. It has basic room calibration capability(which I needed the RadioShack meter for).
Problem is that though I have the money in my currency, it probably won't be shipping to my area. Besides the shipping cost for the 17pound weight is substantial. I've been trying to get someone over there coming back on holidays to help me purchase it and keep freight costs down.

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post #25 of 27 Old 12-08-16, 10:00 AM
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Re: A wild Horn out of Africa

Quote:
Toffkanda wrote: View Post
That's surprising to hear!
Robbo are you sure about this?
I'm was under the impression that these apps are unreliable because of difficulty in calibration of phone and apps.
The app itself might not be bad, it's the $1 microphone that really causes the problem - they simply don't have enough resolution to perform the task properly. You can probably get adequate readings, but they're really only precise enough to achieve average results (depending upon the manufacturer of the phone, you could get even less).

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post #26 of 27 Old 12-08-16, 03:55 PM Thread Starter
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Re: A wild Horn out of Africa

Hmm, a phone that's smart but don't hear too good
;
Who knows if any of Samsung galaxy note 3, note 10.1 2014 and galaxy grand 2 has a good enough mic. Is there a way to test the phone mic?

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post #27 of 27 Old 12-18-16, 07:39 AM Thread Starter
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Re: A wild Horn out of Africa

I've downloaded and tried some of the better rated android spl measurement apps,
there seems to be a wide variation in the decibel levels presented by the different apps in a given situation of baseline room noise.
It would be difficult to find a reference reading for calibration without a dedicated spl metering hardware.
Some apps even find it difficult going beyond 90db reading no matter how loud the sound is.
I suppose I could still use the relative values from a particular app and set the different tones to get a fairly flat room FR notwithstanding?

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