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As some might remember in my recent review of them I liked them a lot but also criticised mainly their elevated treble for my room and taste which I could easily correct with EQ though.
Looking at them and my measurements I thought this might be a rare case were the usually audiophoolian biwiring terminals might be helpful which was confirmed by my listening and future measurements.
So I added on each side a 2.2 Ohm 10 Watt MOX resistor before the tweeter terminal instead of the "golden bridge"
as such a value usually drops the tweeter level around 2 dB on typical tweeters, such MOX resistors are typically used in good quality crossovers:
Before doing any measurement I listened to many songs from different eras and genres and noticed that now the tonality seemed fine for me, my room and taste for a much larger percentage of recording than before. Now the 12.1 sounded more like a typical good British tuning and older Dynaudios, a tuning where you just listen to records and forget thinking about tech. To verify the change I also switched from one original to one "modified" loudspeaker listening to pink noise.
Additionally I did some quick measurements, first a kind of listening window spatial average with the moving microphone method and no gating at approximately one meter distance from the front baffle:
As it can be seen the original has a bit elevated treble while with the mod its more a "british" with a tad subdued treble and presence region.
I also did an MMM comparison with both L+R loudspeakers original and modified at my listening position compared to the Harman experienced listeners curve which works quite well in my room:
Concluding this so simple and cheap mod works surprisingly well in my room and makes me enjoy the Wharfedale Diamond 12.1 even without any EQ which is rather the exception. It might be interesting to give it a try also for other owners if they also prefer a more British voicing and if someone like a tad more treble they can try also 1 or 1.5 Ohm instead.
Looking at them and my measurements I thought this might be a rare case were the usually audiophoolian biwiring terminals might be helpful which was confirmed by my listening and future measurements.
So I added on each side a 2.2 Ohm 10 Watt MOX resistor before the tweeter terminal instead of the "golden bridge"
as such a value usually drops the tweeter level around 2 dB on typical tweeters, such MOX resistors are typically used in good quality crossovers:Before doing any measurement I listened to many songs from different eras and genres and noticed that now the tonality seemed fine for me, my room and taste for a much larger percentage of recording than before. Now the 12.1 sounded more like a typical good British tuning and older Dynaudios, a tuning where you just listen to records and forget thinking about tech. To verify the change I also switched from one original to one "modified" loudspeaker listening to pink noise.
Additionally I did some quick measurements, first a kind of listening window spatial average with the moving microphone method and no gating at approximately one meter distance from the front baffle:
As it can be seen the original has a bit elevated treble while with the mod its more a "british" with a tad subdued treble and presence region.
I also did an MMM comparison with both L+R loudspeakers original and modified at my listening position compared to the Harman experienced listeners curve which works quite well in my room:
Concluding this so simple and cheap mod works surprisingly well in my room and makes me enjoy the Wharfedale Diamond 12.1 even without any EQ which is rather the exception. It might be interesting to give it a try also for other owners if they also prefer a more British voicing and if someone like a tad more treble they can try also 1 or 1.5 Ohm instead.
