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spectrum analyzer?

 
 
jeffl
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      03-11-2010, 05:11 AM
Please share your thoughts
One of my Event asp8s has had an intermittent low end flutter and after it
goes away it sounds okay but is a bit louder than its mate. Sometimes the
thing gets really loud for a few seconds--really annoying. I called Event
and may swap out the amp. Strangely its almost back to identical volume and
hasn't been a problem for a week now.

Anyways-I'd like to get a device to check the volume and freq output of the
things to make sure they are perfectly matched. I was a little concerned to
find the hi/lo/and output trim knobs were different on the 2 units--one has
them made of a hard plastic and the other has hard rubber knobs--funny that
I never noticed this before--the guy at Event says they're just different
end-caps and that there has been no design change, etc between shipments.
If anyone remembers--I had taken home 2 pair of these that actually sorta
blew up when I plugged them in--smoke-a few sparks--made for some excitement
here at the Loven homestead. People made fun of me and I guess rightfully
so! Turned out they actually had a batch shipped to GC that went to the
wrong country--something electronic. I still wanted/and finally received a
good pair a few years ago.

Is it a spectrum analyzer I want. I would like to check the room and
speakers if possible. Any product suggestions greatly appreciated. Thanks
again!
Jeff Loven

 
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Don Pearce
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      03-11-2010, 05:15 AM
On Thu, 11 Mar 2010 00:11:28 -0600, "jeffl" <(E-Mail Removed)> wrote:

>Please share your thoughts
>One of my Event asp8s has had an intermittent low end flutter and after it
>goes away it sounds okay but is a bit louder than its mate. Sometimes the
>thing gets really loud for a few seconds--really annoying. I called Event
>and may swap out the amp. Strangely its almost back to identical volume and
>hasn't been a problem for a week now.
>
>Anyways-I'd like to get a device to check the volume and freq output of the
>things to make sure they are perfectly matched. I was a little concerned to
>find the hi/lo/and output trim knobs were different on the 2 units--one has
>them made of a hard plastic and the other has hard rubber knobs--funny that
>I never noticed this before--the guy at Event says they're just different
>end-caps and that there has been no design change, etc between shipments.
>If anyone remembers--I had taken home 2 pair of these that actually sorta
>blew up when I plugged them in--smoke-a few sparks--made for some excitement
>here at the Loven homestead. People made fun of me and I guess rightfully
>so! Turned out they actually had a batch shipped to GC that went to the
>wrong country--something electronic. I still wanted/and finally received a
>good pair a few years ago.
>
>Is it a spectrum analyzer I want. I would like to check the room and
>speakers if possible. Any product suggestions greatly appreciated. Thanks
>again!
>Jeff Loven


You have a spectrum analyzer - your sound card, coupled with whatever
DAW software you use. Good luck checking the room and speakers though;
many a good idea has crashed and burned attempting that daunting
undertaking.

You will have fun learning, though.

d
 
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William Sommerwerck
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      03-11-2010, 12:18 PM
> I'd like to get a device to check the volume and freq output
> of the things to make sure they are perfectly matched.


Play a mono recording and stand halfway between the speakers. This will give
you a pretty good idea of whether there are any major differences. Also try
white and pink noise.

----- The Lady from Philadelphia

Not two speakers will ever be "perfectly" matched. There will always be
small differences.


 
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Nono
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      03-11-2010, 01:49 PM
On 11 mrt, 07:11, "jeffl" <peo...@people.com> wrote:

> Anyways-I'd like to get a device to check the volume and freq output of the
> things to make sure they are perfectly matched.



Hi Jeff,

I calibrated my monitor levels with a simple SPL meter basically
following the method described on the following pages:
http://audiodesignlabs.com/wordpress...m-calibration/
http://www.digido.com/audio-faq/m/mo...libration.html

This is only LEVEL calibration though.
Fortunately my monitor's tone controls are dipswitches, so I didn't
need to fiddle with them.

Good luck,
Norman.
 
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Mark
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      03-11-2010, 04:26 PM
On Mar 11, 9:49*am, Nono <n_henrique...@hotmail.com> wrote:
> On 11 mrt, 07:11, "jeffl" <peo...@people.com> wrote:
>
> > Anyways-I'd like to get a device to check the volume and freq output ofthe
> > things to make sure they are perfectly matched.

>
> Hi Jeff,
>
> I calibrated my monitor levels with a simple SPL meter basically
> following the method described on the following pages:http://audiodesignlabs.com/wordpress...libration.html
>
> This is only LEVEL calibration though.
> Fortunately my monitor's tone controls are dipswitches, so I didn't
> need to fiddle with them.
>
> Good luck,
> Norman.


see:

http://www.qsl.net/dl4yhf/spectra1.html

Mark
 
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Scott Dorsey
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      03-11-2010, 05:29 PM
jeffl <(E-Mail Removed)> wrote:
>Please share your thoughts
>One of my Event asp8s has had an intermittent low end flutter and after it
>goes away it sounds okay but is a bit louder than its mate. Sometimes the
>thing gets really loud for a few seconds--really annoying. I called Event
>and may swap out the amp. Strangely its almost back to identical volume and
>hasn't been a problem for a week now.
>
>Anyways-I'd like to get a device to check the volume and freq output of the
>things to make sure they are perfectly matched. I was a little concerned to
>find the hi/lo/and output trim knobs were different on the 2 units--one has
>them made of a hard plastic and the other has hard rubber knobs--funny that
>I never noticed this before--the guy at Event says they're just different
>end-caps and that there has been no design change, etc between shipments.
>If anyone remembers--I had taken home 2 pair of these that actually sorta
>blew up when I plugged them in--smoke-a few sparks--made for some excitement
>here at the Loven homestead. People made fun of me and I guess rightfully
>so! Turned out they actually had a batch shipped to GC that went to the
>wrong country--something electronic. I still wanted/and finally received a
>good pair a few years ago.
>
>Is it a spectrum analyzer I want. I would like to check the room and
>speakers if possible. Any product suggestions greatly appreciated. Thanks
>again!


If you want to look for room problems, just playing back swept sine tones
and listening with one ear closed (or with a sound level meter) will tell
you an awful lot about what is going on in the room.

If you have speaker system problems, though, that is a different issue
entirely. I have to say your description of the speaker system does not
give me a great sense of confidence.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."
 
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