just to add you can feed all your audio speaker mic etc from this unit
73 elan g0uut/dl9fcc
Ken - NM9P
I’ve heard Bose Companions and other low cost “computer” speakers with Flex radios (5000A, 6500, 6700). In my opinion a high quality stereo setup is significantly superior. It comes down to a matter of distortion and how much you are willing to tolerate. Most “computer” speakers are not rated for distortion products, because they are so poor that the manufacturers don’t publish the data.
It was only by accident that I got to listen to communications audio with a quality stereo system. Before I bought my first transceiver, a Flex 5000A (now own a 6500), my desktop computer was already set up with NHT Classic Two loudspeakers and an Onkyo M-282 stereo amplifier for listening to Blu-ray discs with high definition audio and uncompressed CD audio files. No low-cost “computer” speakers can match the fidelity of high quality bookshelf loudspeakers driven by a low distortion stereo amplifier.
Although SSB is typically limited to well under 3.5 khz of bandwidth, fortunately, the vast majority of the information that our ears and brain need to hear and comprehend human speech falls between 300 and 3400 hz. The clarity and dynamics in that range provided by low distortion loudspeakers, improves intelligibility.
In combination with low distortion drivers, the SmartSDR RX equalizer provides a very effective tool to enhance intelligibility and reduce listening fatigue. You need to only focus on the audio spectrum below 3.5 khz, whilst the ability to correct for hearing loss at higher frequencies, for example, or roll off muddy bass and enhance output in the critical 1 khz to 2 khz frequency range, provides substantial benefits.
Accordingly, if you are looking for a substantial upgrade over the Bose Companions, I suggest that you consider a pair of high quality book shelf or studio monitor loudspeakers and a low distortion stereo amplifier to drive them. Professional grade, powered studio monitors would also be a good choice (JBL, Yamaha).
Finally, if you want the best possible solution for hearing weak phone signals, forget about loudspeakers and check out the Bose QC25 headset – they are remarkably good.
In ham radio receive audio can mean something different to each user. Some hams want to hear sharp pure tones for CW some need speakers to copy voice in a pile up while others want full range audio for AM, FM SSB and other voice modes & some even need to compensate for hearing loss. That’s why in my opinion quality “Studio Monitors” are the right choice because you can always adjust your receive audio processing & EQ but you will know that the speakers will handle anything you throw at them and reproduce it accurately.
Because of the awesome inherent technology of SDR radio the possibilities for receive and transmit audio today is virtually unlimited. The Flex 6000 series TX audio response alone is capable of 50Hz to 10Khz. Typical SSB voice is normally 2.7 to 3 KHz and you would be amazed how good 3 KHz audio can sound with a good mic and a little EQ. So to me now more than ever good speakers “Monitors” are critical in the modern ham shack when you want to hear it all.
So what speakers should you choose? Well first let me say you do not need to buy some super hi end speakers we are not mixing the next #1 radio hit! Generally you will want to look for two way monitors with an 8” woofer. This is going to be the optimal size for anything from Big ESSB HI-FI audio to basic CW Tones. Almost all monitors today have a built in amplifier so you can connect them right to the FLEX without the need for any other equipment. By the way if you are using a FLEX then you will want 2 monitors because of the Stereo/Dual-Channel possibilities the FLEX offers. Also when you use 2 speakers spaced between your ears you also widen the sound field making it even easier to Hear/Copy weak signals as well as make long listening sessions less fatiguing on your ears. SDR also means great Short Wave radio not just the Ham Bands!
Here are a few “reasonably priced” quality monitors that work very well in the shack.
Behringer Truth 8” B2031A $400/PR
JBL LSR308 8" $500/PR
KRK Rokit 8” $500
As for me I’m generally a rag chewer and favor a bit more full range
audio. I personally use a quality pair of studio monitors in my shack and do
not use any EQ or processing other than AGC on receive because
I want to hear as much as possible, a true reproduction of the transmitting
station’s audio. For contesting adjust your RX EQ to your heart’s desire (do what ever it takes)!
Now I get it, for some folks good quality home speakers or PC speakers work just fine and I have no issue with that. But for those people that want the best possible SDR audio experience a pair of good monitors are the only way to go.
They are awesome speakers, to my untrained ear, they sound excellent.
One of the features (and I'm sure others have this) is the dual input. I have my 6700 and computer sound card plugged into the speakers.
Rich - N5ZC
I have the Flex configured Aural.
I have a little hearing issue and find this easy on the ears and avoid headphones unless absolutely needed to copy that weak one. Happy camper here.
I connected the Flex 6300 line out to a STERIO 1/8" "Y" connector, each sterio output is connected to the 1st Line In of each speaker pair.
The 2nd input to the left bank of speakers is connected to the Flex computer's line out.
The 2nd input of the right bank is connected to the line out of another computer (music/ball games, etc). Oddly, I am not experiencing any RF ingress issues here.
Let me mention though that I added ferrite to each audio input and output, I subscribe to the book of Jim Brown K9YC, ferrite is your friend my friend.