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Post by Deleted on May 21, 2018 1:06:00 GMT
I'd love to own a Dual IV. Are they very powerful?
S.
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Post by Deleted on May 21, 2018 5:10:16 GMT
Well it must depend on the amplifier circuit being regulated and the regulator itself. Not all regs are created equally. When playing with Avondale amps i was advised to regulate the voltage amplification stages only and leave the current amplification (output) stage free to soar like an eagle. And more recently with my nva amp boards i was advised not to put any regulator near them ever.
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Post by dsjr on May 21, 2018 8:18:13 GMT
My first Naim was a CB 160 used with 12s.
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Bigman80
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Post by Bigman80 on May 21, 2018 9:52:21 GMT
I'd love to own a Dual IV. Are they very powerful? S. Probably not more than 100w into 8 ohms (I'm guessing here) but they have two massive transformers, way bigger than a 250, so I'd expect great current delivery. Sonically they sound like they could blow your front door off its hinges. The thing I like is that they have all that strength and weight but no harshness. Think of a giant Exposure X with more bass, openness, freedom and also subtlety.
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Bigman80
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Post by Bigman80 on May 21, 2018 9:55:32 GMT
Well it must depend on the amplifier circuit being regulated and the regulator itself. Not all regs are created equally. When playing with Avondale amps i was advised to regulate the voltage amplification stages only and leave the current amplification (output) stage free to soar like an eagle. And more recently with my nva amp boards i was advised not to put any regulator near them ever. I bet you could do something interesting with a Dual IV today.If I ever pick up another (who am I kidding, WHEN I pick up another), I wouldn't mind picking your brains on what I could try regarding regs. Maybe such things have moved on in the 25-30 years since the JF days.
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Bigman80
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Post by Bigman80 on May 21, 2018 10:08:45 GMT
My first Naim was a CB 160 used with 12s. Mine was a 42.5/140 and I hated it. Looking back I'm still unsure what was up but it followed on from a 1983 NVA p50/A40 which was wonderful. The thing is I also changed source from an LP12/Ekos/OC9 to an Arcam Alpha CD and speakers from Kans to IBLs, I still think either the 42.5 or 140 was sick, although I have never liked subesquent 42.5s anyway, I've AB compared 3 examples with 3 different 42s and every one sounded horrible in comparison. I know circuit-wise they are the same amp except for single/dual rail PSU so I can only put it down to component choice. I don't like the 32.5 either, but they aren't as bad, 42,62 and 72 are all fine. Maybe not so keen on 102, but only one example owned and brief at that. 92' is horrible too. After my first set, I left Naim completely alone for a few years until I bought Isobariks. I picked up a beautifully restored (piano black) NZ export version of the 22 and 120 which worked ok with the Isobariks. I ended up with a 42/Snaps/250 eventually IIRC. Almost all my subsequent Naim amps have been run with Kans, Elas, Saras, SBLs, IBLs and Spicas. I must've had over 100 Naim amps in my time. All have been enjoyable except that first pair. Like Dave, I have a soft spot for the bolt down 250. I've recapped all the ones I have owned and every one came on song just from that. Not the most detailed amps in the world, but boy are they sweet.
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Post by dsjr on May 21, 2018 13:14:40 GMT
I can't prove it, but I suspect the 42 was the forerunner of the 92 later on - and I have it on good authority that something was done to limit the 92 performance in some way.
The 42.5 may have had earthing enhancements on the board (separate ground plane to a central point) as the 32.5 and 72 did, but I can't be certain here as it's so long ago. We thought the 72 was less splashy than the 32.5 for example, and there was more to it I think than 'just' the output filter (read fixed band-limiting tone controls) being changed. Over many samples and comparisons, the 72 was the best one until the 52 blew it away - suddenly there was air and space for the music to breathe... Sadly, they never did the 52 in the CB cosmetic and my pal with a then fairly new six-pack system, had his nose pushed well out of joint - this contributed to his moving over to the superior ATC's, Bryston preamp driven (he'd dabbled with AVI and when they went wrong, Ashley wasn't too keen on servicing under warranty and his Bryston is still just under its twenty year guarantee!).
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Post by dsjr on May 21, 2018 13:20:11 GMT
As for Farlowe era Exposure, I gather the (early) preamps were the weak part, being noisy and a bit crude in design. To me, the few I heard sounded polar opposite to the CB Naims we brainwashed ourselves into preferring, so that factor alone colours all my memories of these old amps. Knowing what I know now, I suspect a Farlowe-era power amp with modern preamp would be excellent - not sure if there's a necessity for an active one as there is with Naim to prevent instability/distortion at the input with too wide-open a source..
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Post by Deleted on May 21, 2018 14:04:22 GMT
I like the 72 best of the affordable preamps. 52 is lovely but too expensive. I think the olive series power amps were better due to the later output trannies.
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Post by dsjr on May 21, 2018 15:22:45 GMT
They all go off the same I gather... The 112? which replaced the 72 could sound slightly 'better' but the couple I compared did sound pretty Sh#t for an hour or so until they'd stabilised. The 52 showed just how much was missing, 'sonics as well as music' and other non-Naim preamps can beat that with ease for a hell of a lot less money I subsequently discovered.
My favourite Naim preamp of this period was actually the 82, as to me over many dems, it always sounded more like a smaller 52 than any of the lesser ones and even with 'just' a Hicap, I thought it better. The 82 wasn't allowed to have each part individually regulated, so deliberately hobbed so 'we' could spend double. I'm also convinced the sprung circuit boards was a selling paff to make it even more 'different.'
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Post by dsjr on May 21, 2018 16:34:01 GMT
Posting all this stuff reminded me of when we received our first Nait 5, together with the CD5? that came with it. Putting both together we were met with a terrible harsh sound! We left it playing and idling for a fortnight, which calmed it down a bit and in the meantime, as the Nait 5 from the outset allowed the pre and power section to be separated, we inserted a Flatcap. the difference wasn't a small one and as it has twin secondary's, one fed the preamp and the other went to the CD player from memory.
So - if you see a Nait 3 going unloved and cheap, see if the 'separation kit' is still available for it so the preamp can be isolated and fed with its own supply (a bridging plug is then used as with the later amps to use as a single unit). if you see a Nait 5 under similar circumstances, add the Flatcap 2 or equivalent for a genuine sonic upgrade. You'll still get the hard clipping on loud passages though, but you'll find lower volumes better...
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Post by Deleted on May 21, 2018 18:50:04 GMT
Have you heard the Super Nait 2, Dave?
S.
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Post by dsjr on May 21, 2018 19:40:31 GMT
I heard the mk1 and that was enough
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Post by Deleted on May 21, 2018 20:25:20 GMT
Me too, albeit briefly, it was very ordinary. If I was listening blind I would've expected it to be a £150-200 purchase.
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Post by dsjr on May 22, 2018 17:23:39 GMT
Shane, they may be absolute pants for all I know, but Emotiva, Yamaha, Marantz and Rotel are making full-feature power-houses for under a grand these days and some of them are getting great reviews for sonics as much as technical prowess. We 'all here' know about the three-letter brand who also does fantastic sounding amps at silly-low money and these are very reliable if used as recommended. Why spend more on a bodged up 1950's PA amp dressed to the nines in it's corporate style yet costing thousands (the mk2 lost the built-in dac I believe yet prices didn't fall as a result...)?
P.. I didn't hear them last November, but a rack of Emotiva gear looks *evil* - All dark grey/black with cold blue LED's...………...
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Bigman80
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Post by Bigman80 on May 22, 2018 19:00:41 GMT
I like the look of Emotiva stuff too. If anyone is looking for a good powerful amp for peanuts, I'd recommend an Adcom GFA 555. Very good for next to nothing, I will have another one someday, the last one came and went far too quickly even though it was intriguingly good.
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Post by dsjr on May 22, 2018 19:11:59 GMT
I second that emulsion on the Adcom I grew up with Crown's, so although I have D-60's and an early D-150, the DC300A is the one on my bucket list. It used to be thought of as a bit of an animal, but today, it's not much more powerful then a Quad 606 series amp, which is what 'sensible' people should have if an NVA gives them the shudders
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Bigman80
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Post by Bigman80 on May 22, 2018 20:59:29 GMT
I second that emulsion on the Adcom I grew up with Crown's, so although I have D-60's and an early D-150, the DC300A is the one on my bucket list. It used to be thought of as a bit of an animal, but today, it's not much more powerful then a Quad 606 series amp, which is what 'sensible' people should have if an NVA gives them the shudders Adcom is about as "unsexy" as they come and so people overlook it. I would love to get a few bling amps together and run them against a GFA 555. I would be very surprised if it didn't see at least some of them off.
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Bigman80
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Post by Bigman80 on Jun 2, 2018 15:23:43 GMT
Personally I'd rather have a Creek 4040 or 4140 and use the money elsewhere in a baby system. I still think the old Creeks are bargains.
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Post by pauld on Jun 26, 2018 9:45:17 GMT
Would never touch Creek, even if they made the best products in the entire world.. The owner is a ......
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Post by Deleted on Jun 26, 2018 10:25:04 GMT
Twit!
Hope that helps, Paul.
S.
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Post by pauld on Jun 26, 2018 10:39:41 GMT
LOL, na twit is far too nice for that individual!
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Bigman80
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Post by Bigman80 on Jun 26, 2018 17:04:36 GMT
Why do I still hanker after owning a Nait or Nait 2? They won’t do anything I can’t get for less money, or get more of from a pre/power. I guess it’s part nostalgia and part design chic. It’s not always about the sound or the value, I guess.
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Post by antonio on Jun 26, 2018 17:19:32 GMT
Talking about Creek, reminds me of the time at a hifi show when listening to Epos speakers, I said to someone, "Well they've been taking over by Creek, and no longer the same as the original Robin Marshall design" only to be informed by said individual "I'm Mike Creek"
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Bigman80
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Post by Bigman80 on Jun 26, 2018 17:23:32 GMT
That’s awesome! Creek stuff is too expensive these days when their old kit is bulletproof, cheap and plentiful.
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Post by pauld on Jun 26, 2018 17:24:11 GMT
Rarrr Mike Creek!
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Post by Deleted on Jun 26, 2018 17:33:09 GMT
Why do I still hanker after owning a Nait or Nait 2? They won’t do anything I can’t get for less money, or get more of from a pre/power. I guess it’s part nostalgia and part design chic. It’s not always about the sound or the value, I guess. Had a chrome bumper Nait 2 last year. Not a bad sounding little amp. But you can buy better for a lot less. S.
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Bigman80
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Post by Bigman80 on Jun 26, 2018 17:47:45 GMT
It’s just a fad. These days I get things and never even plug them in. Some I park with mates and never even see. Others, like the Nexus, I don’t even unbox. I think it’s the delay between buying and getting to try. By the time I get to it or it comes to me in Cyprus, I’m bored and ive moved on. Plus I’m really happy with what I have. The buying is just a bad habit driven by too much free time.
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Bigman80
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Post by Bigman80 on Jun 26, 2018 17:52:23 GMT
Pity you weren’t there to see him get the put-down. I expect you’d have enjoyed it!
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Post by pauld on Jun 26, 2018 17:58:04 GMT
Hell yeah
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