NAP 145 monoblock

Posted by: Dave J on 18 February 2003

Anyone know anything about the new 145 due to be launched at Bristol??

Dave
Posted on: 18 February 2003 by David Hobbs-Mallyon
No - are you going?
Posted on: 18 February 2003 by Dev B
The London Axis of Naim will be there. Look out for us Smile
Posted on: 18 February 2003 by Dave J
Yes, David, I think I shall have to now. What with the CDS3 and 145's - they kept that quiet.

I'll go down on Friday morning. You going?

Dave
Posted on: 18 February 2003 by Andrew Randle
So will the London axis of Linn. All one of us Big Grin

Andrew

Andrew Randle
Linn Binn Sinner
Posted on: 18 February 2003 by David Hobbs-Mallyon
Dave

Would like to go....any chance I could get a lift? Will pay a share of the petrol?

David
Posted on: 18 February 2003 by Richard Dane
quote:
Originally posted by Dave J:
Anyone know anything about the new 145 due to be launched at Bristol??

Dave


The NAPV 145 is a mono amplifier designed for AV use. Specifically it makes an excellent upgrade for centre channel duties. Anybody with experience of multi-channel sound will know just how critical the centre channel is and the NAPV145 will get the best out of quality centre speakers such as our Axent and Axess.

Richard
Posted on: 18 February 2003 by Dave J
quote:
Would like to go....any chance I could get a lift?


David,

Sure, no problem. I'm planning to go early to get there before the London axes. I need to be back here by 7.00 pm, though.

Dev, Andrew, are you there on Friday?

Dave
Posted on: 18 February 2003 by Andrew Randle
Nah mate, I'm there on Sunday and will be travelling by train with my girlfriend.

Thanks,

Andrew

Andrew Randle
Linn Binn Sinner
Posted on: 18 February 2003 by Dave J
quote:
The NAPV 145 is a mono amplifier designed for AV use.


Thanks Richard, although I am a bit disappointed. I thought, as the nomenclature suggested, this was a replacement for the 135's although how it would fit into the lineup between 300 and 500 is beyond me.

You'll just have to entice me with a CDS3, instead.

Cheers

Dave
Posted on: 18 February 2003 by Simon Matthews
The word on the street is that, although better than 135's, a 145 is really to be considered for mono AV use. The nap300 is the better route for replacement of a pair of 135's. I have not heard the dem but I hear a single 300 is a no brainer over a pair of 145's.
Posted on: 18 February 2003 by Dev B
quote:
The nap300 is the better route for replacement of a pair of 135's.


I think 2 x new 250 active is a better propositon if you have Naim speakers.
Posted on: 18 February 2003 by Simon Matthews
"I think 2 x new 250 active is a better propositon if you have Naim speakers".

What about three way nbl's and dbl's?

Have you compared active 250's to a single 500?
Posted on: 18 February 2003 by Simon Matthews
That was supposed to say 'Have you compared active 250's with a single 300?'
Posted on: 18 February 2003 by Dev B
quote:
Originally posted by Simon Matthews:
"I think 2 x new 250 active is a better propositon if you have Naim speakers".

What about three way nbl's and dbl's?

Have you compared active 250's to a single 500?


Simon,

Don't forget I have a wife and child and live in London. This means DBLs are not in my future (yet). I've still got my SBL's and love them to bits.

On your last question, yes I have.
Posted on: 18 February 2003 by NB
Has anyone compared two 250's with a 300? would be interested in the outcome,

Regards

NB
Posted on: 18 February 2003 by Simon Matthews
Dev

I'm not trying to be too pedantic , just pointing out that 2 out of 5 naim designed speakers are not 2 way. In that case three 250's plus a naxo work out quite a bit more costly than a single 300.
Posted on: 18 February 2003 by Dev B
quote:
Originally posted by Simon Matthews:
Dev

I'm not trying to be too pedantic , just pointing out that 2 out of 5 naim designed speakers are not 2 way. In that case three 250's plus a naxo work out quite a bit more costly than a single 300.


Simon, just tugging your chain a bit Wink I had the 300 at home it was superb. The 250 was exceptionally good. Having heard active many times now (I get to hear active DBLs quite often) active is a bit mesmerising. What amp you go for sort of depends on speakers and room and taste I suppose
Posted on: 18 February 2003 by Ron Toolsie
It doesnt take a TI scientific calculator to figure out that a pair of NAPV145, each priced identically to a single NAP250 (as has been the norm in the 250 vs 135 pricing in the past) is within a hair of the NAP300 price. It would then be rather disingenous to opt for 2x145 instead of the latter.
On a slightly related subject, if you look at the sketch of the NAPV145 in the latest NAP owners manual, it only has a single XLR input as compared to a dedicated Channel1 and a dedicated Channel2 input as per NAP135. This seems to indicate that both the pins are 'hot' which may exact a slight price on its ultimate performance, at the same time allowing it to output a true L+R mono signal if a NAP250 type Snaic4 is hooked up to it. I wonder if the AV2 center channel output has both pins hot with the identical mono signal? this would allow the use of either a 'green', a 'red' or a stereo Snaic 4. Hmmmmmmmm

Ron
Dum spiro audio
Dum audio vivo
Posted on: 18 February 2003 by Manu
Ron, no
Only the channel 1 pin should be connected (hot) inside the 145. On the AV2, the socket for center channel also outputs a subwoofer signal on the other pin (CH2). So the 145 should use a green cable.

Naim are full of resources, will they add a switch or something inside, to change the input channel?

I have always been surprised of this combinaison on the AV2. I would have prefered a center channel on both pins. The advantages: biamp center speaker and more interesting two center speakers; with a big screen, one over, one under: dialog at the center of the screen (verticaly).
I'm curious to see how they will hook the sub: a Y snaic or RCA?

Emmanuel

All opinions are my own, and reflect those of the organisation i work for, even if not stipulated.
Posted on: 19 February 2003 by Ron Toolsie
quote:
Only the channel 1 pin should be connected (hot) inside the 145. On the AV2, the socket for center channel also outputs a subwoofer signal on the other pin (CH2). So the 145 should use a green cable.


Well, I suppose that is an engineering way of saying the 145 is not to be employed as in the stereo L or R mode. I doubt that there will be internal switching to allow the use with a Ch2 cable- this probably would result in a larger sonic compromise than having the usual Ch1/Ch2 pairing of XLRs on the rear panel. Which is not to say that one of the 'green' cables could not be very simply be resoldered to allow pin 2 at the source end to feed into pin1 at the poweramp end. This special cable would not be backwards compatible with any other naim application. I think the best alternative short of trading the 135s towards a NAP300 is to wait until there is a board replacement allowing the 135s to use the T007 transistors, taking it some of the way towards the performance of a NAP145 but only at a fraction of the cost. Indeed, this is what I plan to eventually do with my remaining 4xNAP135s.

Ron
Dum spiro audio
Dum audio vivo


Posted on: 19 February 2003 by Manu
The transformer is also biger in the 145 than in the 135. And i'm not sure these are the only diferences (box apart).
In the new Naim literature, it is said the 145 is the replacement of the 135. So they will find an elegant way to use them as a stereo pair. In the context of the AV2, the split cable is IMO unavoidable.

Emmanuel

All opinions are my own, and reflect those of the organisation i work for, even if not stipulated.
Posted on: 20 February 2003 by Ron Toolsie
quote:
In the new Naim literature, it is said the 145 is the replacement of the 135. So they will find an elegant way to use them as a stereo pair.


The best way for a stereo pair would be to have a NAPV145R and a NAPV145L differing in which input pin is hot. This is a fundamentally better way of allowing stereo useage. Indeed there was a semi-sanctioned mod for the 135s that disconnected one of the XLR inputs rendering it a dedicated Ch1, or a dedicated Ch2 amp. This was usually done for/by people running active systems as every little improvement is quite faithfully rendered. I never got around to doing that on mine. Note to self...........

Ron
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