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Anyone else waiting for mono zen amps? (Read 22519 times)
Lon
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Re: Anyone else waiting for mono zen amps?
Reply #50 - 02/12/18 at 04:13:23
 
You know me, I won't be withholding impressions. Wink
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th.Taboo Mk IV+MK III;PS Audio:DMP+DSD,P10,NPC, PowerBases,xStream Statemt spkr cbs,AC-12 pcs; Mapleshade:SamsonV2+V3;Oppo UDP-205;VooDoo:Cremona+Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Sennheiser 800S
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busterfree
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Re: Anyone else waiting for mono zen amps?
Reply #51 - 02/15/18 at 02:46:42
 
I am enjoying my SE84UFO3. They are coming along very well. I had a toe tapping session today.





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Lon
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Re: Anyone else waiting for mono zen amps?
Reply #52 - 02/15/18 at 03:05:22
 
Great Juan! Look very nice. The first pair of 25th Anniversary, eh? I'm looking forward to mine.
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th.Taboo Mk IV+MK III;PS Audio:DMP+DSD,P10,NPC, PowerBases,xStream Statemt spkr cbs,AC-12 pcs; Mapleshade:SamsonV2+V3;Oppo UDP-205;VooDoo:Cremona+Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Sennheiser 800S
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busterfree
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Re: Anyone else waiting for mono zen amps?
Reply #53 - 02/15/18 at 09:03:30
 
Just regular SE84UFO3.   Smiley

They arrived before the recent R&D breakthroughs were posted. I am thinking about upgrading, but I want to get to know what I have first.
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Lon
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Re: Anyone else waiting for mono zen amps?
Reply #54 - 02/15/18 at 10:17:39
 
Oh sorry, I thought perhaps yours was the one that was shipped out. Good idea to break these in and get to know them if you do decide to send them in for the upgrades.
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th.Taboo Mk IV+MK III;PS Audio:DMP+DSD,P10,NPC, PowerBases,xStream Statemt spkr cbs,AC-12 pcs; Mapleshade:SamsonV2+V3;Oppo UDP-205;VooDoo:Cremona+Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Sennheiser 800S
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jorgen
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Re: Anyone else waiting for mono zen amps?
Reply #55 - 02/18/18 at 13:51:32
 
Even without the upgrades these are fabulous amps, but I really want to go for the upgrade. My problem is that I have to ship them from Norway to Peoria, I guess at least 4-500 usd for the shipping alone. And a total cost of close to 2k is quite a lot. Yet, from Steve’s post I read that it should be worth it.
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busterfree
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Re: Anyone else waiting for mono zen amps?
Reply #56 - 02/18/18 at 18:33:26
 
I agree. The SE84UFO3 are great amps. I do not think I will be upgrading them because I would have to ship them back.

I thought long and hard before I pulled the trigger on the original purchase. I have no regrets now that something better has come along.

I have put the SE84UFO back in my music system while I wait for more details on 25th anniversary editions.

My SE84UFO3 are now in my TV system continuing to burn in.
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busterfree
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Re: Anyone else waiting for mono zen amps?
Reply #57 - 02/18/18 at 18:39:48
 
Quote:
Even without the upgrades these are fabulous amps, but I really want to go for the upgrade. My problem is that I have to ship them from Norway to Peoria, I guess at least 4-500 usd for the shipping alone. And a total cost of close to 2k is quite a lot. Yet, from Steve’s post I read that it should be worth it.


I can envision talking myself into a pair of SE84UFO325 and moving the SE84UFO3 into backup or 2nd system duty. A very compelling argument!
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Lon
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Re: Anyone else waiting for mono zen amps?
Reply #58 - 04/06/18 at 11:56:19
 
My SE84UFO3-25 Monoblocks are built, tested, and packed! Should ship soon. Exciting!
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th.Taboo Mk IV+MK III;PS Audio:DMP+DSD,P10,NPC, PowerBases,xStream Statemt spkr cbs,AC-12 pcs; Mapleshade:SamsonV2+V3;Oppo UDP-205;VooDoo:Cremona+Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Sennheiser 800S
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Acetone
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Re: Anyone else waiting for mono zen amps?
Reply #59 - 04/06/18 at 16:17:32
 
Lon,  Sweet! Can't wait to hear your impressions. I'm saving for the ufo25.
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Crazy Bill the Eel Killer
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Re: Anyone else waiting for mono zen amps?
Reply #60 - 04/08/18 at 02:42:45
 
Hello Juan,
Are those Mapleshade platforms under your amps ?
If so, did they make a difference ? ;
Inquiring minds want to know !!

Cheers,                  Crazy Bill   Grin
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busterfree
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Re: Anyone else waiting for mono zen amps?
Reply #61 - 04/08/18 at 11:31:25
 
Yes. Mapleshade platforms. They serve the purpose and are consistent with my other platforms and audio rack. I bought them when I decided to order the SE84UFO3 so I have not used the amps on anything else. Thanks
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busterfree
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Re: Anyone else waiting for mono zen amps?
Reply #62 - 04/08/18 at 11:41:51
 


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busterfree
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Re: Anyone else waiting for mono zen amps?
Reply #63 - 04/08/18 at 11:43:54
 
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Lon
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Re: Anyone else waiting for mono zen amps?
Reply #64 - 04/08/18 at 11:49:32
 
Look beautiful Juan. I get my Monolocks tomorrow.
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th.Taboo Mk IV+MK III;PS Audio:DMP+DSD,P10,NPC, PowerBases,xStream Statemt spkr cbs,AC-12 pcs; Mapleshade:SamsonV2+V3;Oppo UDP-205;VooDoo:Cremona+Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Sennheiser 800S
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jorgen
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Re: Anyone else waiting for mono zen amps?
Reply #65 - 06/04/18 at 22:38:54
 
I don’t know too much about DAC and have a gut feeling that this might the area in the audio chain were we first hit the point of diminishing returns. Still my Cambridge dacMagic has been my weakest link. Not a bad component, far from it, but I know now I have some potential here. Yesterday I got myself a AURALiC VEGA. So fun to find a good step upwards

This is really something else. And I’m still just using it with redbook material
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jorgen
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Re: Anyone else waiting for mono zen amps?
Reply #66 - 01/06/19 at 20:21:01
 
Hi guys and happy new year!!

I wanna ask a question concerning one of my monoblocks. A couple of times i have noticed a repeating "thump" sound in one speaker. First time i turned them off and later back on again the sound was gone. Later it happened again.
'
Last night it once again occurred and i also noticed the VR tube was "blinking" and in the same pace as the sound in the speaker. So changed that tube and everything seemed ok. Later the same symptoms occured. But maybe the rectifier tube didnt seem to glow, not sure though..

Anyone with an idea what this could be?
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Lon
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Re: Anyone else waiting for mono zen amps?
Reply #67 - 01/06/19 at 23:20:47
 
Jorgen, I've occasionally had similar sounds. . . in my case I think it's one of my sources shutting down causing it. It hasn't been a problem that damages components or diminishes the sonic qualities.
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th.Taboo Mk IV+MK III;PS Audio:DMP+DSD,P10,NPC, PowerBases,xStream Statemt spkr cbs,AC-12 pcs; Mapleshade:SamsonV2+V3;Oppo UDP-205;VooDoo:Cremona+Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Sennheiser 800S
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Steve Deckert
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Re: Anyone else waiting for mono zen amps?
Reply #68 - 01/07/19 at 00:44:24
 
All OA3 tubes will blink on and off during start up and do it again during shut down.  The volume should be turned down during this period.  Once the output tubes begin to conduct current and the OA3 blinks on for the first time or two, you might hear a thump through the speakers.

Additionally, in order to keep an OA3 (or any VR tube) lit, the tube or tubes it serves must be drawing current.  If for example, the input tube started drawing less current because it is wearing out or failing) this would create the condition you described during operation.

Steve
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Archie
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Re: Anyone else waiting for mono zen amps?
Reply #69 - 01/07/19 at 01:02:40
 
Ever since I got the Anniversary mods on my CSP3 I hear a medium and rising pitch "wooooooop" from each channel on startup.  It started in the right mostly and now it's longest and loudest on the left.  I know this because I don't have my volume down at startup.  Oops.   Tongue
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Lon
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Re: Anyone else waiting for mono zen amps?
Reply #70 - 01/07/19 at 01:17:27
 
My CSP3 with the 25th Anniversary Mods has done the same thing. My wife likes to pretend it's ME passing gas. . . .
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HR-1,ZP3,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th, CSP3-25th.Taboo Mk IV+MK III;PS Audio:DMP+DSD,P10,NPC, PowerBases,xStream Statemt spkr cbs,AC-12 pcs; Mapleshade:SamsonV2+V3;Oppo UDP-205;VooDoo:Cremona+Amati,Iso-Pods;MD90-T SE tuner; headphones: Oppo PM-1,Sennheiser 800S
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HockessinKid
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Re: Anyone else waiting for mono zen amps?
Reply #71 - 01/07/19 at 01:39:05
 
🙈🙉🙊

HK
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Archie
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Re: Anyone else waiting for mono zen amps?
Reply #72 - 01/07/19 at 17:06:38
 
Hilarious!  It is a really funny sound.  Totally unexpected.  (The CSP3 I mean.   Embarrassed)
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Technics 1200G TT w/ Ortofon Jubilee MC cart
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jorgen
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Re: Anyone else waiting for mono zen amps?
Reply #73 - 01/08/19 at 17:11:49
 
Hi and thanks for replying

Maybe i wasnt clear when i wrote my question. Its not related to when i turn my amp on or off, i have noticed that especially the ZP3 blinks a lot when turned off. The tube blinks when it, the amp, has been running for hours, and the thump-thump-thump sound is heard in the speaker in the same pace as i can see the blinking. If i turn it off, and wait a while before turned back on the symptom is gone. as i wrote, i have changed the VR tube, but a few days later i noticed the same problem, so i have thought maybe its not the VR tube, but maybe something else.. like maybe the rectifier, but i do not know, i have currently changed the rectifier to see if the problem goes away. The thing is that, as stated above, the problem have appeared when amp has been on for many hours..
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Archie
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Re: Anyone else waiting for mono zen amps?
Reply #74 - 01/08/19 at 17:22:36
 
Have you tried swapping out all the tubes with known, good tubes?
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Technics 1200G TT w/ Ortofon Jubilee MC cart
ZMC1
ZP3 (25th A Mods)
ZR2 (25th A Mods)
CSP3 (25th A mods)
ZMA (25th A mods)
HR1s
Silver Cabling
Isolation platforms under everything.
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jslateiv
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Re: Anyone else waiting for mono zen amps?
Reply #75 - 01/08/19 at 17:43:35
 
As Steve and Archie said, make sure your 3 front end tubes (ax7/au7) are good.  If they are start to get weak and their bias has dropped too low then there would be less current running through the VR tube possibly causing the condition you're experiencing,..   I believe these VR's require at least 5ma running through them to keep them 'alive'.    In the ZP3  there is probably not much more than that being pulled with a know good set of input tubes.
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