oscilloscope
07-28-2004 | 10:36 PM
#4
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Posts: 522
From: Queens
$350 with shipping..its made by BK Precision...got it from http://www.testequipmentdepot.com/b+...sion/2120b.htm
07-29-2004 | 06:36 AM
#6
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From: Queens
Originally Posted by Maxima Dan
Sweet...what did ya get?
07-29-2004 | 08:42 AM
#8
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From: Queens
Originally Posted by Maxima Dan
350.00 with shipping is a heck of a deal 
07-29-2004 | 02:11 PM
#9
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Posts: 719
Originally Posted by friendhasmax
how would you adjust gain settings with it? check voltage of the head units pre outs with a test signal and look for clipping at a certain volume setting? then connect to the amp at that volume with the amps gain all the way down...and adjust gain until the scope shows a clipped signal on the amps output ?
I think what you would want to do is find a good test disc that will have a single test tone, something like 45Hz for subs. Turn your head unit up all the way and make sure that the signal is not clipping there. Then do the same for any line drivers, EQs, etc. If everything checks out make your way to the amp.
I guess what I'm not sure about is if you can adjust the amp gain with out the subs hooked up and how much adding a load to the amp out will effect the V out. What I would do is try it without the subs hooked up starting from 0 Gain and working my way up till I see clipping, then back it off a bit. That should get you in the ball park and then it should be a slight tweak to adjust it for your subs. Or if you are certain that your subs can handle it just go for it.
At least that was the way I was thinking of doing it...I won't actually test it out till I get the rest of the pieces in place for my latest system overhaul. But please let me know how it works out, I'm really curious.
07-29-2004 | 02:40 PM
#10
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Joined: Oct 2002
Posts: 522
From: Queens
Originally Posted by Maxima Dan
I think what you would want to do is find a good test disc that will have a single test tone, something like 45Hz for subs. Turn your head unit up all the way and make sure that the signal is not clipping there. Then do the same for any line drivers, EQs, etc. If everything checks out make your way to the amp.
I guess what I'm not sure about is if you can adjust the amp gain with out the subs hooked up and how much adding a load to the amp out will effect the V out. What I would do is try it without the subs hooked up starting from 0 Gain and working my way up till I see clipping, then back it off a bit. That should get you in the ball park and then it should be a slight tweak to adjust it for your subs. Or if you are certain that your subs can handle it just go for it.
At least that was the way I was thinking of doing it...I won't actually test it out till I get the rest of the pieces in place for my latest system overhaul. But please let me know how it works out, I'm really curious.
I guess what I'm not sure about is if you can adjust the amp gain with out the subs hooked up and how much adding a load to the amp out will effect the V out. What I would do is try it without the subs hooked up starting from 0 Gain and working my way up till I see clipping, then back it off a bit. That should get you in the ball park and then it should be a slight tweak to adjust it for your subs. Or if you are certain that your subs can handle it just go for it.
At least that was the way I was thinking of doing it...I won't actually test it out till I get the rest of the pieces in place for my latest system overhaul. But please let me know how it works out, I'm really curious.
yea im not sure about the load either. but what i think is that it wont effect it. the load shouldnt drop the voltage, but i'll test it both ways to confirm.
07-29-2004 | 03:03 PM
#11
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Joined: Aug 2002
Posts: 719
Originally Posted by friendhasmax
yea im not sure about the load either. but what i think is that it wont effect it. the load shouldnt drop the voltage, but i'll test it both ways to confirm.
07-29-2004 | 03:43 PM
#12
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Joined: Oct 2002
Posts: 522
From: Queens
Originally Posted by Maxima Dan
That's what I was thinking too. I guess the only reason I could see is if it can't keep up the current.
07-29-2004 | 03:49 PM
#13
Originally Posted by friendhasmax
exactly. damn oscilloscopes are nice...i also have a real time analyzer on my laptop called TrueRTA. 1/24 octave RTA, and it also functions as an oscilloscope with a built in function generator. reason y i have this stuff is so i can start designing crossovers and building them.
07-29-2004 | 05:11 PM
#15
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Joined: Aug 2002
Posts: 719
I just used this program: http://www.speakerworkshop.com/
it's freeware and you need to construct a test jig and stuff, but once you get it all working it's really quite powerful.
Also if you are ever looking for ideas and/or answers the madisound discussion board is quite helpful. I'd be cool if you can somehow incorporate this into a lab project...never worked out for me, but good luck and have fun.
it's freeware and you need to construct a test jig and stuff, but once you get it all working it's really quite powerful.
Also if you are ever looking for ideas and/or answers the madisound discussion board is quite helpful. I'd be cool if you can somehow incorporate this into a lab project...never worked out for me, but good luck and have fun.
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