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Offline darkmatter  
#21 Posted : 16 September 2018 16:06:27(UTC)
Simon Briggs


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Originally Posted by: Martin Colloms Go to Quoted Post
I measured them: (1982)
lowest overall distortion of any speaker on the market
most upbeat timing
fastest bass transients
essentially pistonic over the entire range
low diffraction
low group delay
superb finish
high power handling
some coloration mainly due to mild frequency imbalance

Martin Colloms


I am going to be listening to a pair soon, I may even buy a pair provided I can find a set in excellent condition.
Offline darkmatter  
#22 Posted : 24 September 2018 12:09:53(UTC)
Simon Briggs


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Originally Posted by: darkmatter Go to Quoted Post
Originally Posted by: Martin Colloms Go to Quoted Post
I measured them: (1982)
lowest overall distortion of any speaker on the market
most upbeat timing
fastest bass transients
essentially pistonic over the entire range
low diffraction
low group delay
superb finish
high power handling
some coloration mainly due to mild frequency imbalance

Martin Colloms


I am going to be listening to a pair soon, I may even buy a pair provided I can find a set in excellent condition.


Heard a pair of NS1000Ms, plenty of notes taken during the listening session, safe to say I'm on the hunt for a pair BigGrin

Edited by user 24 September 2018 21:05:03(UTC)  | Reason: Not specified

Offline phil page  
#23 Posted : 24 September 2018 20:34:03(UTC)
phil page


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NS1000 or NS1000M Simon? That you heard?
Phil
Offline darkmatter  
#24 Posted : 24 September 2018 21:05:48(UTC)
Simon Briggs


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Originally Posted by: phil page Go to Quoted Post
NS1000 or NS1000M Simon? That you heard?


M version, the best bass I have heard in a fair amount of time!!

Edited by user 11 October 2018 09:49:49(UTC)  | Reason: Not specified

Offline darkmatter  
#25 Posted : 30 October 2018 10:47:46(UTC)
Simon Briggs


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Found a pair in good condition, all drivers okay. I will be setting them up once the main room has been sorted out.

I will be using them with a choice of two Orelle SA100evo amps one (modified) and one standard, plus a Krell FPB 700cx/Allegri controller pairing as drive, with sources including bespoke CD players and an LP12, with not a streamer in sight!!

Edited by user 30 October 2018 23:41:28(UTC)  | Reason: Not specified

Offline darkmatter  
#26 Posted : 13 December 2018 10:51:00(UTC)
Simon Briggs


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Martin,
When you measured the NS1000 for choice, can you recall what the lower in room bass limit was when they were tested?
Thanks
Simon
Offline Posting Pete  
#27 Posted : 21 December 2018 08:34:32(UTC)
Posting Pete


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Location: Melbourne

Mine are the focus of my very high end system that would be hard to beat at the price:
Yamaha NS-1000s are frequently available for about 1100GBP.
A couple of B&W PV1d subbies via DSPeaker time-based correction gives the last bit of room ambience; it's the bass that is hardest to get right.
A laptop computer based system, microRendu feeding a new Chord Qutest showed me the emotional involvement of low-level information.
How about a Spectral amplification system, the DMC20 and DMA90, as snappy as NAIM with better image specificity.
I'm totally happy with this, and I've heard a lot of $$$ systems.

Offline Cemil  
#28 Posted : 25 December 2018 18:32:58(UTC)
Cemil


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Originally Posted by: darkmatter Go to Quoted Post
M version, the best bass I have heard in a fair amount of time!!


I still have a pair of those in storage! Not heard them for over 20 years, but I am loath to part with them.
Offline Posting Pete  
#29 Posted : 26 December 2018 06:42:07(UTC)
Posting Pete


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Australia
Location: Melbourne

Everyone really NEEDS two systems -- one with blood and guts, the other for delicacy.
How about my Yammies+ in main room,

in the other Stax F81s.
Also in Music Room 2 Quad63s on Gradient subbies.
Is it OK to have such Guilty Pleasures, or am I a suitable case for treatment?
Envious yet? No that's not nice.

Also Spendor BC1s for normal TV watching with a Pioneer SP-C22 centre speaker, by Andrew Jones.

I reacall Martin here a couple of years back suggesting his holy grail, the best of: Quad BC1 Yammy

Edited by user 26 December 2018 06:57:28(UTC)  | Reason: adding BC1 +

Offline Simon Briggs  
#30 Posted : 02 December 2019 20:32:38(UTC)
Simon Briggs


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Originally Posted by: Martin Colloms Go to Quoted Post
Originally Posted by: Pete_w Go to Quoted Post
There's an "appreciation" of the "vintage" NS-1000M in HFNRR this month.


In this HFNRR October 2018 bumper issue there is a full reprint of a January 1980 four page, four amplifier review by yours truly! Quad 44/405, Rogers A100 and the first NAD 3020 which I wrote in late 1979.

Edited at that time by John Crabbe, HFN did not discuss sound quality at this time as the technical review was supposed to speak for itself.

John Crabbe asserted that well measuring amplifiers all sounded the same apart from maximum loudness.

Many also asserted that all CD players were perfect as they all measured well.

That led to a big row with Quad over their Toshiba based CD player.

Matin Colloms







Hi Martin,

Quick question

What was the lower bass limit in room? due to the shallow sealed box alignment I suspect must be 30Hz or even a little lower?

Seem to recall some measurements in HiFi Choice when it was the more targeted small 'book' editions

Thanks

Simon

edit

Copies of images from HFC Loudspeakers MC no.31 (1983)



HFC NS1000M p210

HFC NS1000M p211

HFC NS1000M Lab

Edited by user 02 December 2019 21:56:01(UTC)  | Reason: Not specified

Offline Simon Briggs  
#31 Posted : 05 November 2021 21:49:20(UTC)
Simon Briggs


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From a thread elsewhere here.

This is interesting


OK here are the TS parameters for the NS1000M Bass driver

UserPostedImage

Below is a simulation for the driver as used in the Yamaha NS1000M sealed enclosure, input for 2.81 volts

UserPostedImage

Similarly from the small signal response plot

UserPostedImage
Offline Simon Briggs  
#32 Posted : 05 November 2021 22:01:23(UTC)
Simon Briggs


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More fun with Modelling the NS1000M

The box used is about 50 litres and would give a system Q of around 0.73 Without fill material.

With 80% fill this would reduce the system Q to about 0.6 and would translate to an unfilled enclosure, with an effective volume of 86 litres.

Interesting.

With an effective system Q=0.6 this is why that speaker times so well.

I have a pair and will get them installed in my main system over the next month or two.

My question would be what would be the most suitable stand height?

My guess would be about 335mm or 13 1/4"

Edited by user 05 November 2021 22:07:23(UTC)  | Reason: Not specified

Offline Simon Briggs  
#33 Posted : 16 November 2021 15:05:33(UTC)
Simon Briggs


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Re Yamaha NS1000 Loudspeakers.

I will be digging my pair out soon to use as a reference against my new build,suitable but wondered about stands and height etc.

my ear will be approx 40" above floor level.

looking for opinions regarding stand height or even a solid box stand or one with a solid front to better acoustically load bass in my room to better approach half space or 2pi etc?
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