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04/20/24 at 11:52:01

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Zu Audio Soul Supreme Compatability (Read 2691 times)

Tal

Seasoned Member

Posts: 128

Zu Audio Soul Supreme Compatability
11/13/21 at 21:27:58

Does anyone have experience using Soul Supremes with the UFO2? These speakers have peaked my interest due to the high efficiency (+100db), which should pair well with the low power UFO2. That said, these speakers have 16ohm impedance. To be honest, I don't fully understand impedance. I'm concerned the speaker impedance will be an issue with UFO's 8ohms. Zu sells a 10ohm loading resistor, that will bring the speaker impedance closer to the amp. Not sure if the resistors will correct compatibility, though . All input, advice, and opinions is appreciated.

Thanks

SE84UFO2 25A mods x2, ZP3 25A mods, CSP3 25A mods, ZRock2 25A mods, Rega P3-24 Incognito tonearm rewire and Groovetracer mods, Bob's Devices SUT > ZP3, Denafrips Pontus + Hermes, Bluesound streamer, Zu Soul VI, Omega DeepOmega8 sub,

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Lin Ex Member	Re: Zu Audio Soul Supreme Compatability Reply #1 - 11/14/21 at 00:05:22 The UFO transformers have a Hi-Lo switch which helps with the Zu's high impedance. The Zu's are around 95 dBs 1w/1m, so they will get pretty loud with 2 watts. The resistors Zu sells are a waste of money.
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CAJames

Seasoned Member

"I've run every
red light on memory
lane."

Posts: 1653

Re: Zu Audio Soul Supreme Compatability
Reply #2 - 11/14/21 at 02:55:22

My 2 cents is they would be a perfectly reasonable match electrically with a UFO amp. My thing is, and I have never heard them myself, but my impression from a number of on-line discussions is they have a "house sound" that a lot of people feel strongly about one way or the other. The people that like them really like them, and it seems like the people that don't really don't.

When I was in the market for UFO friendly speakers a couple years ago I considered them, but settled on Omega instead and have no regrets at all. JMO/FWIW/YMMV.

[FOOBAR2000 | Jay's CDT2 MRK3] -> Denafrips Terminator 2 + Gaia
Sumiko Pearwood -> Mapleknoll Athena -> Luxman SUT -> Maple-tree Phono 3E
Woo WA22 -> 2x UFO25s, balanced monos
Omega SAM , Hifiman Arya, Senn HD-650

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armstdav

Seasoned Member

Posts: 177

Re: Zu Audio Soul Supreme Compatability
Reply #3 - 11/14/21 at 04:32:56

Zu Druid V owner here; they're also 16 ohms. I'll respectfully disagree with Lin about the loading resistors. I bought 2 sets of the Ohmite 25ohm 20W resistors, and I've experimented with them on every amp I've run through the system, which includes a Decware SE34i.2+. Adding the resistors will change the frequency response curve, which is neither good nor bad; it just depends on the rest of your system and your listening preferences. Some amps I've tried sound best with no resistors on the Druids; some sounded best with one set (11.1 ohms), some with two sets (7.7 ohms). There's no magic formula to get the "right" sound; you just have to trust your ears.

All that said, I predict you'll love the Zus with the UFO2. Have fun!

David

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Martindfletcher Senior Member Posts: 58	Re: Zu Audio Soul Supreme Compatability Reply #4 - 11/16/21 at 02:32:20 I have zu druid vs with mono block ufo2s. The sound great. Without any resistors, I get clipping at decibel levels close to 100. Your mileage may vary depending on room size and listening levels.
Back to top	Chain in order: TD124 mki, Denon 103R, Ortofon RS-309D, zu silver phono cable, ZMC1, Audio Art RCA, ZP3, vintage RCA 5U4G Rectifier, Gold lion signal tubes, DW silver reference, Xhadow, Bridged UFO2's, gold lion 6922, mapleshade double helix plus, zu Druid v's IP Logged

Tal Seasoned Member Posts: 128	Re: Zu Audio Soul Supreme Compatability Reply #5 - 11/16/21 at 05:13:55 martin Great to hear. your set up is similar to mine - bridged UFO2. Questions - are your Druids 12ohm or 16ohm? I believe the IV is 12 and the V is 16. Thanks
Back to top	SE84UFO2 25A mods x2, ZP3 25A mods, CSP3 25A mods, ZRock2 25A mods, Rega P3-24 Incognito tonearm rewire and Groovetracer mods, Bob's Devices SUT > ZP3, Denafrips Pontus + Hermes, Bluesound streamer, Zu Soul VI, Omega DeepOmega8 sub, IP Logged

Lin Ex Member	Re: Zu Audio Soul Supreme Compatability Reply #6 - 11/16/21 at 15:29:55 I didn't notice that you are using 2 amps ("bridged" ), this reduces the high impedance speaker concerns.
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