I once had a pair of Audioquest Type 6 and a set of low end MIT cables but I can’t remember the model but they were about the same price range as the Type 6 cables. I was bi-amping and would run a tube amp on the high side and a solid state on the low side. With the MIT’s on the high side I was pleased with the sound. One day I switched the cables but kept the amps as they were (Tubes on the highs). The MIT’s were choking the base. I don’t remember the readings but the resistance was too high and it sounded like you had a 100’ piece of #18 zip cord on the woofers. My wife who does not pay attention to audio and who is happy with her Amazon Echo Dot asked me what I did because the bass was noisy. I swapped the back and the problem went away.
now while I think there is a ton of snake oil in the topic of cables, they do make a difference. When running bi-wire I would imagine the same issue would happen. But I always saw it as the MIT cables sucked (at that price point) and I used my AQ type 6 only when I sold my tube amp because I heard no difference with Bi-Wiring with the single amp. I sold the MIT cables and the type 6’a with jumpers worked fine. I am sure if you have a pair of cables that sound better on the HF side that you may find a benefit, but only if they were a detriment to the LF side.
On my Bryston 7B’s running in parallel mode, I did find my woofers behaved positively to the extra current so my new cables are coming bi-wired on both ends.
now while I think there is a ton of snake oil in the topic of cables, they do make a difference. When running bi-wire I would imagine the same issue would happen. But I always saw it as the MIT cables sucked (at that price point) and I used my AQ type 6 only when I sold my tube amp because I heard no difference with Bi-Wiring with the single amp. I sold the MIT cables and the type 6’a with jumpers worked fine. I am sure if you have a pair of cables that sound better on the HF side that you may find a benefit, but only if they were a detriment to the LF side.
On my Bryston 7B’s running in parallel mode, I did find my woofers behaved positively to the extra current so my new cables are coming bi-wired on both ends.