6600 plug sizes?

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  • Updated 10 months ago
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Hi all,

I broke down and ordered a 6600 which I know will be quite a few weeks out for delivery.  I think it was the two SCUs and the better filters that made me jump.

I am curious about the mic/key/speaker plugs on the back.  I've seen in the forums here that they are 1/8 inch.  Is that correct?   I just want to make sure to order the right ones.

Are they all TRS format?

I just want to make sure of the size because I'd like to order some connectors and get some cables made up in preparation.
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Mark - WS7M

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Posted 10 months ago

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David Decoons wo2x, Elmer

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The speakers, headphones, and pseudo-balanced mic connectors are 1/8" TRS (3.5 mm).

There is a 1/4" TRS for balanced TX audio in.

Dave wo2x
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Rich McCabe

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Mark, they later added the 1/4" on the 6600 so there is a 1/8" mic and 1/4" pseudo balanced.
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Tim - W4TME, Customer Experience Manager

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That is not entirely correct.  the 1/8" TRS is pseudo balanced and the 1/4" TRS is balanced.
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Rich McCabe

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You have not read the rest of thread :)
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Mark - WS7M

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David and Rich,

Thanks.  So I was not going crazy looking at the picture on the web where I could not find a 1/4 inch.

So my plan is to mount this radio in my radio shed.  I hope to run a key to it but I may be doing only PC audio.  We'll have to see.  If I do powered speakers or mic then I can easily run the cables to it.

I'm hoping to do PC audio to help eliminate any RFI.
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K3SF

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the 1/8" TRS is for the mic is pseudo balance BUT the 1/4" TRS is  balanced...

Paul K3SF
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Rich McCabe

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OK, I thought they both were.  I know it was something they added after the fact.
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K3SF

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yep...they added 1/4" after some 'discussions' on the group about balanced mic input

The balance mic input is a welcomed addition.

There are XLR to 1/4" adapter out available form amazon..
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Rich McCabe

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Yea I am thrilled to have the 1/4" addition as that is what I am using on the 6500. Glad Flex added that for us.

The only change I had to plan for was a 1/8" headphone cable "extension"  to get it around to front where I could use it.
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David Decoons wo2x, Elmer

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I made a 16" extension cable with right angle 1/8" TRS plug to 1/4" inline jack. It sticks out from under the front of the radio so I can easily plug in headphones.

Dave wo2x
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Mark - WS7M

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So are there both 1/8 and 1/4 TRS mic inputs?

Where is the 1/4 one located?
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Rich McCabe

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Most all the pictures you see are the split rear panel prototypes. The only real rear panel I have seen is a picture of the 6400.

The quick start guide is not up to date on the site as far as I know but the manual is correct.
(Edited)
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David Decoons wo2x, Elmer

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That diagram is correct. It is located above the accy jack.

Dave wo2x
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Mark - WS7M

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Awesome!  Thanks!
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KM6CQ - Dan

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Congrats Mark. I sold my 6500 and ordered a 6600 for the same reason. I changed my mic XLR cable to a TRS 1/4 today, it might show up this week. I don't want to waste time soldering when I should be plug and playing.

I found this on their website tonight. 
(Edited)
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Mark - WS7M

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Thanks Dan.  I can't wait to hear your 6600 on the air.  I know mine is months away but I still have my 6500 until then.

I guess the question I still have is what (if any) is the difference between the 1/4 and 1/8 mic inputs?  IE I can easily get 1/8 TRS cable/connectors.  What is the benefit/purpose of the 1/4 over the 1/8?

I have considered going to all PC audio and using a PC USB mic.  But yesterday I worked K8NY and received a comment of "fantastic audio" which currently is done using some external processing then into the XLR port.

So when the 6600 arrives I need to make some decisions.  I'll probably stick with my external audio because I need to run the wires for it and I can always use PC audio as there is really no wiring to be done.

I never thought I'd op phone as much as I am.  I love CW most of all but I find on Saturdays I like to join this group up on 7.165 or so and they are all audio buffs.  So I had to have some reasonable sounding audio.
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W7NGA

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Mark - the 1/4" jack is a balanced, differential input. The 1/8" jack is not. Your 6500 is sounding quite good but the guys with the Anan 8000's sound spectacular. 
(Edited)
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Mark WS7M

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Ok I probably could have figured that out if I'd read above.  LOL...

Thanks!
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KM6CQ - Dan

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I think the 1/8 is more like fake balanced audio. I suspect the ground and mic low are tied together. That would be pins 1 and 3 on the XLR connector. The 1/4 is jack is true balanced audio. Which is great. It is very immune to interference because the two mic wires are out of phase. Initially they had dropped the balance audio feature which was a huge step back from the 6500. I think they went to a 1/4 TRS because its cheaper then an XLR but it is still effective. We will not be plugging in every day and dragging the mic cable around the radio room. So I do not see a problem, just not as cool. I present all my equipment with the same audio signal. I use a 528e Symetrix with balanced outputs. It works very nice. I think I have it set up so that sounds like me on the air, not like a FM broadcaster. My friends tell this, and I have recorded myself many times to get it right. 
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David Decoons wo2x, Elmer

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I use the W2IHY equipment and found the pseudo balanced input to be a better match than the balanced input on the 6600.

I've used to balanced input for years on the 6700 and 6500.

Dave wo2x
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Rich McCabe

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Dave, do you mean as far as levels?
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David Decoons wo2x, Elmer

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No, EQ'ing. 

I believe the W2IHY EQ Plus I believe is pseudo-balanced out so I find it matches better using pseudo-balanced in. Audio reports are "cleaner" audio when comparing both input driven at same level.

Dave wo2x
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Rich McCabe

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Gotcha,

I am running a EQplus (sorta) but not really using it for EQ or effects.  I also have an iPlus which generally needs a little amplification prior so I have kept the EQplus inline.to provide that. Not to mention I like the vertical LED graph as an indication of a live mike. Waste of technology really.

I am running into the 1/4" balanced input on the 6500 at the moment but in all honesty I have never found any difference between foster and balanced in my shack

The only reason I went balanced was because I had an early 6300 with RF mic issues (which flex later resolved). I switched to 6500 and balanced hoping to get away from it.
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Rich McCabe

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This is the only picture I have found online. Extracted from a video.

As you can see its not the prototype split panel that you see on the flex site. So here is your balanced input.

Nice looking rear panel :)
(Edited)