[SBE] audio problem

[John Poray]

Can anyone on the SBE Roundtable offer an opinion to the audio problem
described in the message below?  The person asking the question is not a
member of SBE and therefore not subscribed to the Roundtable so please reply
off-line to him.    admaker at ntelos.net

 

Thanks,

John Poray  <mailto:y at sbe.org> 

*****************************************

John L. Poray, CAE

Executive Director

Society of Broadcast Engineers, Inc.

9102 N. Meridian Street, Suite 150

Indianapolis, IN 46260 USA

Phone: (317) 846-9000   Fax:(317) 846-9120

 <mailto:jporay at sbe.org> jporay at sbe.org

 

-----Original Message-----
From: Michael Holmes [mailto:admaker at ntelos.net] 
Sent: Tuesday, August 21, 2007 6:55 PM
To: mclappe at sbe.org
Subject: Request re signal processor difficulty

Sirs:

            I am a radio commercial producer of 30 years experience. 

            I have a signal processor called an SPL (Sound Performance
Laboratory, Germany) Vitalizer.  It enhances audio signals with a
combination of dynamic EQ, amplitude-controlled phase correction and
harmonic filtering.  The result is greatly enhanced transparency.

            This device is used in recording studios, post-production
facilities, and live sound reinforcement.  It is advertised for these
purposes plus as an enhancing device in broadcast facility audio chains.  

            For some reason, it distorts my commercials on the air, and has
since I began using it.  I hear no distortion whatsoever in my studio.   I
use its effect sparingly.  I'm not overdriving anything, and people at the
stations say that my MP3's sound wonderful in their monitors (internal, not
off-air monitors, which exhibit the distortion to them as well).  The
company that manufactures this device is well-respected worldwide and has a
good-sized range of audio products:  

           SPL Home:      http://spl-usa.com/index.html

           Vitalizer page:  http://spl-usa.com/V_MK2/in_short.html

            If it is possible, I would like to put this problem before your
membership in the hope that someone has had experience with this device and
can offer insight or solution to this difficulty. 

            I think it important to note that only someone familiar with
this device will be able to address the issue.  Again, my levels are good,
and are identical with or without the device in the chain.  With the device
I get on-air distortion.  Without I don't.  To the best of my knowledge
there are no other variables or differences.   The stations report that
in-house everything sounds fine.  

            Thanks very much!

Michael Holmes

admaker at ntelos.net