Speakers
Posted 1 month ago
I bought Bose Companion Two Series, work great and are nice size— w speakers
I had two sets of these and they were both RF noisy (20m specifically). I thought I had a defective set the first time and tried another. Ended up returning both and tried the Creative Labs and never looked back. That's just been my experience.
Danny, interesting, what is meant by RF noisy. I may have it and don’t know it.
Spurious emissions. I don't remember now the exact part of the band but there was a signal being emitted by the speakers as soon as power was applied even with the power off as I recall. It's been several years now. I was really disappointed because I liked the form factor too.
I used another technique, without using powered spekears, I simply reversed the inputs, my yaesu sp8 case to the headphone input of 6400 and vice versa for headphones. obviously the commands on Ssdr will be inverted
The problem with the Bose speakers is the switch mode power supply. Throw it away and power the speakers with any other clean 12V power supply or use your main shack 12 volt supply. Otherwise the Bose speakers are excellent.
GL
Winston Vk7wh
GL
Winston Vk7wh
Not true. Even when running from a clean 12VDC battery, same RFI emissions.
With respect, Danny, my RFI was definitely coming from the switch mode power supplied by Bose and completely disappeared when I replaced it with a clean supply.
Obviously your mileage does vary.
73 Winston
Obviously your mileage does vary.
73 Winston
No disrespect sustained Winston. But my station is entirely 12VDC powered (except the linear amplifier) so that may have been the case with the pair you have. But that was not my experience. I was surprised , disappointed, and frustrated as well; to find they still emitted RFI even while being powered by pure DC from a battery. As I mentioned earlier, I tried with two different sets from two different vendors. I didn't imagine it.
Very interesting Danny. I also run my entire remote station on solar charged batteries and only use my inverter for the 2K-FA, however the Bose Speakers are at my home where I do all my operating from.
Just out of interest, and as an experiment, I will take the speakers up to the remote site early in the new year and see what happens when they are co-located with the 6700.
73 Winston
Just out of interest, and as an experiment, I will take the speakers up to the remote site early in the new year and see what happens when they are co-located with the 6700.
73 Winston
To be fair to Bose, the RFI is low level and may or may not cause a problem for any particular station depending on distance to antennas. I simply didn't want anything adding to the noise floor.
Me too had mine years great speakers
I recently purchased the Bose Companion 2 Series 3 speakers to use with my 6400M. Bought them at Best Buy. I am very happy with these speakers and not a hint of RF.
Yeap Mike. I said the same. I use them with original supply. Sure I had a ferrite here and there but as I said they are directly plugged into the back of my 6500 and I am really happy with them. 73
I would love to recommend the Bose Companion speakers. They have the perfect form-factor and sound bodacious. However, as noted by K5CG, they induce spurious emissions on several bands. Relatively low-level (mostly) but annoying. My first thought was the power-supply but the same symptoms occurred when powered directly from a 12-volt lab supply. The DSP shielding is simply inadequate. Fine for pure audio applications, but problematic at HF.
There's a good chance that the Bose Companion 2 Series speakers use class D audio amplifiers. If so, no matter whether you use battery power or not they may still be a source of RFI.
