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Any experience with this RTA?


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luckydevil 
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Posted: June 13, 2006 at 2:09 AM / IP Logged  
GOLDLINE ASA-10B 10-BAND RTA w/SPL
First time I've seen an RTA at a reasonable price. The other ones I have seen usually start at around $500 and go up from there.
Any thoughts?
jeffchilcott 
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Posted: June 13, 2006 at 7:32 AM / IP Logged  
well the first thing I see is the fact that it only reads to 122db     if your only using for the RTA then it would work,   if looking to measure SPL then it will be way on the low side.....most average systems will do 130-140db
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haemphyst 
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Posted: June 13, 2006 at 8:12 AM / IP Logged  
10 bands is really pretty useless... For PROPER setup, I'd look for at least 20 bands, 30 would be even better.
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
luckydevil 
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Posted: June 13, 2006 at 8:19 AM / IP Logged  
Thanks guys. Is there an RTA under $500 that can be used in a car audio application?
Velocity Motors 
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Posted: June 13, 2006 at 8:53 AM / IP Logged  
Have you looked into Windows based systems that run off your lap top and uses a normal mic ?
Jeff
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luckydevil 
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Posted: June 13, 2006 at 9:01 AM / IP Logged  
I don't have a laptop so I was hoping to find a dedicated RTA.
killer sonata 
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Posted: June 13, 2006 at 10:48 AM / IP Logged  

I have trueRTA for my computer. I havent used it yet because I was under the impression that a regular microphone would not suffice. Dont I have to buy a high end mic for it to be accurate?

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DYohn 
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Posted: June 13, 2006 at 11:00 AM / IP Logged  

killer sonata wrote:
I have trueRTA for my computer. I havent used it yet because I was under the impression that a regular microphone would not suffice. Dont I have to buy a high end mic for it to be accurate?

High end?  No, you want a calibrated mic with a flat frequency response.  I use a Behringer ECM8000.  There are many others.  TrueRTA is a great software package, just be sure to pay for at least the level 3 version.

As far as number of bands on a dedicated RTA, it depends on what you are trying to accomplish.  If all you want is something to get a relative idea of in-car frequency response so you can tweak basic tone controls or a head unit's 3 to 5 band parametric, a 10-band RTA can be useful.  If you are trying to fine-tune a SQ comp car, then yea you need more like 1/24 octave resolution.

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killer sonata 
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Posted: June 13, 2006 at 11:39 AM / IP Logged  
How does that mic connect to a computer? Does it need its own power supply?
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DYohn 
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Posted: June 13, 2006 at 12:03 PM / IP Logged  

killer sonata wrote:
How does that mic connect to a computer? Does it need its own power supply?

Yes, you must provide phantom power for it.  I use a Behringer Shark preamp and connect that output to my sound card.  Some profe4ssional sound cards will provide phantom microphone power.

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