I just turned on my AL-1500 Amplifier and checked sound
isolation. The SB-45 and CM-500 are about the same in sound
isolation. Neither one is particularly good.
Dave Hachadorian, K6LL
Yuma, AZ
-----Original Message-----
From: Barry N1EU
Sent: Tuesday, December 29, 2015 9:52 AM
To: Dave Hachadorian
Cc: Reflector Elecraft
Subject: Re: [Elecraft] K3 comments on Koss SB45 headsets
Dave, can you comment on how the isolation compares between the
CM500
and the SB-45? Does the SB-45 provide more isolation?
Thanks & 73,
Barry N1EU
On Mon, Dec 28, 2015 at 6:39 PM, Dave Hachadorian
<[email protected]> wrote:
It's quite a coincidence that you asked about the Koss SB-45,
because I just got one for Christmas! Mine is the one with
3.5mm connectors, not the USB version. I also have a CM-500.
I was going to post a review here after wearing the SB-45 all
next weekend in the RTTY Roundup, but here are my first
impressions.
The microphone quality is fine. The SB-45 needed about 3 dB
more boost in TX EQ #4 to sound like the CM-500. The mic is an
electret. Do not confuse this unit with the SB-40, which has a
dynamic mic, and apparently doesn’t sound so good.
The audio out of the headphones is also fine, just as good and
loud and distortion-free as the CM-500, at least for
communications use. I haven't tried either headset on music.
I wore them for 1.5 hours on a long-winded net this morning,
and they were totally comfortable over that time period. I do
wear eyeglasses. People on the net said the audio sounded just
like the CM-500. I'll give a better long-term comfort report
after the RTTY Roundup.
The cord is nice and long, and the mic and headphone wires can
be separated easily to go to different places, after cutting a
little rubber thingie that keeps them together. My mic goes to
the back of a computer on the floor, and my headphones go to an
SO2R box on the table.
The SB45 is around $25 on Amazon, compared to $55 for the
CM-500.
I think this headset is going to be a keeper, but I’ll give a
long term comfort report next week.
Dave Hachadorian, K6LL
Yuma, AZ
-----Original Message-----
From: Gary Gregory
Sent: Monday, December 28, 2015 3:26 PM
To: Elecraft List
Subject: [Elecraft] K3 comments on Koss SB45 headsets
Seasons greetings one and all.
Has anyone used/using the Koss SB45 headsets on their K3?
I have the CM-500 and I am on my second set but again the
padding is
starting to deteriorate so before they look too ratty, figured
I would get
a backup and as the CM500 are not available in VK but the Koss
SB45 are, I
would appreciate any comments/advice the list may offer.
Just to let you all know, I love my Yamaha cm500 BUT, shipping
cost from
the US is really quite ridiculous these days and the AUD has
fallen off a
cliff and the parachute failed to open...:-)
The Koss SB45 are $69.00 AUD, free shipping. I like free...:-)
TIA
73
Gary
--
*Gary - VK1ZZ, K3NHLSkype: Gary.VK1ZZhttp://www.qsl.net/vk1zz
<http://www.qsl.net/vk1zz>Motorhome Portable*
*Miss Behavin'*
*Elecraft K3KPA500FT #18KAT500FT #007*
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