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Author Topic: Combiner quality  (Read 5384 times)

Andrew Broughton

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Combiner quality
« on: March 13, 2018, 01:03:58 pm »

How do the following combiners rate in terms of signal quality?

Shure PA821A
Sennheiser AC3200-II
RF Venue Combine-4
RAD TX-8

I would assume the RAD TX-8 would be at the top of the list, but how do the Shure and Senn compare? Anyone done or seen tests on these devices? Are there any other quality products out there that I'm missing?

My application would be the using these with LectroSonics M2-Duet series IEMs but also possibly with Shure PSM1000/Sennheiser 2000 series IEMs.

Thanks!
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Bob Charest

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Re: Combiner quality
« Reply #1 on: March 13, 2018, 06:39:55 pm »

How do the following combiners rate in terms of signal quality?

Shure PA821A
Sennheiser AC3200-II
RF Venue Combine-4
RAD TX-8

I would assume the RAD TX-8 would be at the top of the list, but how do the Shure and Senn compare? Anyone done or seen tests on these devices? Are there any other quality products out there that I'm missing?

My application would be the using these with LectroSonics M2-Duet series IEMs but also possibly with Shure PSM1000/Sennheiser 2000 series IEMs.

Thanks!

Hi Andrew,

Currently using the Shure PA821A with no complaints. I'd tried the Sennheiser AC3200-II and the RAD TX-8 as well.

The RAD sounded really great. The Sennheiser was certainly acceptable to me as well.

In our usage, we're constrained by the ambient noise of the combiners as we often are set up in very close proximity to the guests. The Shure was wonderfully quiet. Both the Sennheiser & the RAD had multiple fans for cooling. As a result, there is a certain amount of ambient noise with both units. The Sennheiser fans also exhibited (to me) a pitched component to the fan noise which wouldn't work for me.

I loved the RAD unit, but had to go with the almost silent Shure unit. The people at RAD were wonderful to work with. My newer contact at Full Compass (for the Sennheiser) not so much...

Best regards,
Bob

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Scott Helmke

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Re: Combiner quality
« Reply #2 on: March 14, 2018, 09:56:40 am »

Shure has had some reliability issues with the PA821A, but now they're putting out the PA821B which addresses that issue and a couple others.
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Bob Charest

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Re: Combiner quality
« Reply #3 on: March 14, 2018, 01:32:00 pm »

Shure has had some reliability issues with the PA821A, but now they're putting out the PA821B which addresses that issue and a couple others.
Hi Scott,

Iím most interested in the PA821A issues you mention, but didnít find anything when searching the web - Could you please post a bit more info? That would be really helpful to me.

Best regards,
Bob


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Scott Helmke

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Re: Combiner quality
« Reply #4 on: March 14, 2018, 03:20:45 pm »

Iím most interested in the PA821A issues you mention, but didnít find anything when searching the web - Could you please post a bit more info? That would be really helpful to me.

Not sure I could find it at this point, but I think there was a bulletin from Shure about it. We've definitely seen more failures* on the PA821A units than is typical for Shure hardware, and one of the advertised features of the PA821B is better cooling.

*individual input ports going bad
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Andrew Broughton

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Re: Combiner quality
« Reply #5 on: March 14, 2018, 07:42:25 pm »

Not sure I could find it at this point, but I think there was a bulletin from Shure about it. We've definitely seen more failures* on the PA821A units than is typical for Shure hardware, and one of the advertised features of the PA821B is better cooling.

*individual input ports going bad
You mean like this?
http://forums.prosoundweb.com/index.php/topic,166442.msg1534971.html#msg1534971
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-Andy

"Well, my days of not taking you seriously are certainly coming to a middle..."

http://www.checkcheckonetwo.com
Saving lives through Digital Audio, Programming and Electronics.

Scott Helmke

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Re: Combiner quality
« Reply #6 on: March 14, 2018, 08:25:22 pm »

You mean like this?
http://forums.prosoundweb.com/index.php/topic,166442.msg1534971.html#msg1534971

Yes, though what I've always seen is just weak or no signal from the bad inputs.
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Bob Charest

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Re: Combiner quality
« Reply #7 on: March 14, 2018, 09:18:11 pm »

Not sure I could find it at this point, but I think there was a bulletin from Shure about it. We've definitely seen more failures* on the PA821A units than is typical for Shure hardware, and one of the advertised features of the PA821B is better cooling.

*individual input ports going bad
Thanks, Scott.


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Bob Charest

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Re: Combiner quality
« Reply #8 on: March 14, 2018, 09:20:02 pm »

You mean like this?
http://forums.prosoundweb.com/index.php/topic,166442.msg1534971.html#msg1534971
Thanks, Andrew. I thought Iíd seen something, but my search didnít turn it up, so thatís  a big help.



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Nathan.McBee

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Re: Combiner quality
« Reply #9 on: March 28, 2018, 09:06:34 pm »

Hey all, first post here!

going back to the combiners...

Are there noticeable differences?
Do specific combiners work better with units of the same manufacturer?
what kind of specs can we use to measure these types of properties?

thanks!

-Nathan
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-Nathan McBee
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