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Nick in his GTV

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  • Gender
    Male
  • Location
    Port Harcourt, Nigeria (originally Melbourne, Australia)
  • My System
    Klipsch Heresy IIIs, Marantz 8b, Linn LK85, Ashly XR-1000, Akustyk passive preamp, Arcam irDAC, iPod Classic

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  1. Chad - where did you end up with your amp choice? FWIW - I was running a Marantz 8b with my Heresy IIIs and using a Khozmo Acoustic passive preamp.... loved that set up, but felt the bass was a little light, so went a step further. I still run the 8b, the Khozmo passive and the Heresy IIIs, but I added a Linn LK85 to drive the LF and use the 8b for the upper range horns, only. I had to do a little bit of re-wiring inside the Heresy cabinets and introduced a Marchand XM9 electronic crossover but it's now about as close to sonic bliss as I have been for some time. Let us know how you got on and if you ended up with an 8b, how did it perform with your Belles?
  2. Changes made: 2-way stereo electronic crossover now in place, feeding my Marantz 8b (High and Mid range) and Linn LK85 (Low range). Crossover frequency is approx 800Hz using a 24dB/octave slope and Linkwitz-Riley style response. What a spectacular difference to the output from my Heresy IIIs. Bass response is well improved (which I always felt was my systems greatest weakness when just running 'the 8b with the Heresy's and the primary driver behind making the change to bi-amping with solid-state on the LF), but the most surprising and even more pleasing difference is the improvement in separation of individual instruments, giving wonderful clarity right across the the entire frequency spectrum. I was expecting some improvement, but I thought my old set-up sounded pretty good and I am really quite amazed at what a difference this change has made. The only downside is that my Ashly XR-1000 is getting a little long in the tooth and whereas, in the past, my system was completely silent with no active source, I now have a very feint hiss - imperceptible unless your ear is against the speaker, but it makes me wonder if its caps might need replacement and if so, what additional listening bliss might lie beyond that modification (or a switch to a new Marchand, or similar). Anyone thinking about bi-amping Heresy IIIs would receive my absolute recommendation to go for it. And if you weren't thinking about it, maybe it's time to start! Nick
  3. Thanks Chris - indeed, I plan to leave the tweeter and squawker connected to the passive crossover, so I'll just be bi-amping (for now). So, I'll go into the cabinet, disconnect the woofer from the crossover and also disconnect the crossover from the low-frequency binding post, then run a new cable from the LF binding post directly to the woofer. Was hoping to avoid doing that, but so be it. And thanks for the welcome. Nick
  4. “Do I need to disconnect my speakers’ passive crossovers from my drivers?" Yes. At least the woofer (or low frequency driver) must be disconnected from the passive crossover to permit bi-amping. If your speakers are 3-way (i.e., woofer, midrange, tweeter in each cabinet), then you may retain the passive crossover between the midrange and the tweeter if using bi-amping (…but for tri-amping, all drivers must be disconnected from the passive crossover networks) Hi All - looking for a little more elaboration on the above statement as I look to biamp my Heresy IIIs. To disconnect the woofer from the passive crossover, is this just a matter of removing the coupling links from the speaker-wire binding posts, or do I need to modify the actual crossover wiring within the speaker enclosure? Also, I'm planning on using an Ashly XR-1000 crossover and targetting 850Hz as the crossover point - does anyone have any experience (or views) on the appropriate crossover frequency for the bass driver on the Heresy IIIs? Cheers, Nick
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