T60 with a 40hz test tone peaking my SPL meter

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Dave Non-Zero
Posts: 1939
Joined: Thu Jul 13, 2006 4:59 am
Location: Dundee, Scotland
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T60 with a 40hz test tone peaking my SPL meter

#1 Post by Dave Non-Zero »

My meter won't go high enough to measure this unfortunately. The meter just flashes 'over' when it gets above aboit 127dB.

-1 for thought terminating cliches.

Built and/or own:
8 x T48 24" 3015LF
6 x DR280
2 x DR250 old style beta10
2 x T36s 20" delta15L
1 x TAT
1 x dual Lab12 30" T60

In Progress:
2 x DR280

ben.in.salzburg
Posts: 173
Joined: Mon Jan 29, 2007 11:08 am
Location: Salzburg, Austria

Re: T60 with a 40hz test tone peaking my SPL meter

#2 Post by ben.in.salzburg »

Try stepping back 100m and repeating :)

Regards, Ben

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Dave Non-Zero
Posts: 1939
Joined: Thu Jul 13, 2006 4:59 am
Location: Dundee, Scotland
Contact:

Re: T60 with a 40hz test tone peaking my SPL meter

#3 Post by Dave Non-Zero »

Ahhh, is that how it's done. :)
-1 for thought terminating cliches.

Built and/or own:
8 x T48 24" 3015LF
6 x DR280
2 x DR250 old style beta10
2 x T36s 20" delta15L
1 x TAT
1 x dual Lab12 30" T60

In Progress:
2 x DR280

juicewon
Posts: 44
Joined: Mon Nov 29, 2010 1:47 pm

Re: T60 with a 40hz test tone peaking my SPL meter

#4 Post by juicewon »

nice. more vids!
on first builds!
Otop12s
T60s

BoostFab
Posts: 459
Joined: Fri Sep 17, 2010 2:51 pm
Location: DFW, TX

Re: T60 with a 40hz test tone peaking my SPL meter

#5 Post by BoostFab »

that sound is brutal.....

MissileCrisis
Posts: 1128
Joined: Sat Dec 15, 2012 1:30 pm
Location: Walnut Creek, California

Re: T60 with a 40hz test tone peaking my SPL meter

#6 Post by MissileCrisis »

Specs on the T60? As in how wide / is this a 12/15 loaded? Corner? How far was the mic from the sub? What's the max output you can get at 25 Hz? I'm sure that would be fun to try.
Built
2 x TLAH
1 Titan 39 (lab 12, 15 inch)
1 Tuba 60 (lab 12, 20 inch)
SLA Center
2 x Mini MLTP subwoofers
1 x 212 TH (custom)
2 x Mini-Karlsonators
Owned, but not built
2 x Jack 12 (2512, melded)

Grant Bunter
Posts: 6915
Joined: Mon Nov 28, 2011 11:12 am
Location: Ilfracombe Queensland Australia
Contact:

Re: T60 with a 40hz test tone peaking my SPL meter

#7 Post by Grant Bunter »

ben.in.salzburg wrote:Try stepping back 100m and repeating :)

Regards, Ben
+1 but not at exactly 100m.

You lose 6db for each doubling of distance, so you can use that to calculate your loss due to distance and arrive at a total at 1 metre.

So, your mike would be at 1, 2, 4, 8, 16, 32, 64, 128m etc
And your reading would be + 0, 6, 12, 18, 24, 30, 36 (etc) dB on what you see on your SPL meter and the corresponding distance.

Hope this helps...
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...

MissileCrisis
Posts: 1128
Joined: Sat Dec 15, 2012 1:30 pm
Location: Walnut Creek, California

Re: T60 with a 40hz test tone peaking my SPL meter

#8 Post by MissileCrisis »

How many volts were you juicing it with :)?
Built
2 x TLAH
1 Titan 39 (lab 12, 15 inch)
1 Tuba 60 (lab 12, 20 inch)
SLA Center
2 x Mini MLTP subwoofers
1 x 212 TH (custom)
2 x Mini-Karlsonators
Owned, but not built
2 x Jack 12 (2512, melded)

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