Has anyone tried REL’s Longbow wireless connection, or upgraded the stock high level connection cable? How did it go?
Yes, and I did not hear a difference between the direct high-level connection and using the sub wirelessly. I’ve since added a second sub using the same Longbow – a nice perk that doesn’t require more wires!
BTW, I originally used the stock high-level cable, then upgraded to a custom one. The Longbow responded positively, letting the improvements shine through.
I too have a pair of REL S/5 SHO’s connected via longbow to a pair of BHK300’s. Works and sounds great. My only comment is regarding “Stand-by HUM”… Supposedly you have to get the ground wire adapter kit from PSAudio to avoid having HUM with the amps in stand-by mode. I got the kits from PSAudio ahead of getting the REL’s installed but never had any issue with HUM without the Ground Wire connected on the back of the BHK’s… Only when I DID install the ground wire to the PSAudio ground adaptor on the back of the BHK’s did I then get HUM when the BHK’s were in stand-by mode… Go figure… So, the ground wires from the Longbows remain unconnected and all is good.
It is good news that the Longbow system works well. I did wonder if timing would be upset by using wireless rather than cable.
I was looking into maybe using REL’s Bassline blue cable as this is supposed to eliminate the peak in frequency response around 40 Hz they refer to in their blog, although I can’t say I’d noticed it. The Longbow transmitter is the same price as 6m of Bassline blue cable and eliminates the cable run so it seems a bit of a no-brainer that using Longbow is a better solution for me.
Regarding hum, I had it on my Carbon Limited sub with my BHK250 both in standby and on if I floated the black wire. Grounding that to the chassis with PS Audio’s grounding screw eliminates hum whilst the BHK250 is on, but it returns when it is in standby. Rel have offered to provide their ‘network’ kit for around £45 which should eliminate hum entirely. But I would guess that using Longbow may well eliminate the hum entirely also without needing the ‘network’ kit.