So the lesson I have learned is we are NOT done yet w/ our speakers !
we have our speaker systems and they CAN be ( most of them ) be made markedly better / improved w/ mods to the crossover , connectors the box or ?
IF you want to .
There are some clever audio engineers who have done or will do it . some of them you can send them speakers ( ask first ) and they will test them FREE , show you the graphs, tests and they can make a better crossover , etc. -( if they CAN be improved
Some it is not worth trying -hey a few speakers , very few, ARE good to begin w/ !
Others ? it would be like putting lipstick on a pig !
And ? yes maybe you will end up spending so much you could get the / some more expensive "better " speakers . OK
but then THOSE probably are not optimum either ! LOL
I own several good, really good vintage speakers Yamaha , some Vandersteen 2 ce , Allison acoustics AL130 , etc . and as time and finances permit ,( I’m mostly retired on SS ) i will pay the shipping both ways and send them for testing ! some will be left as is some will be fixed , modded !
Seems many / most of the speaker makers cheap out ,cut corners , build to a price point and compromise .
EG
there are two REALLY good re-do’s for the venerable Yamaha NS1000M speakers !
GR research can for next level, upgrade the speakers w/his crossover kit or Troels Gravesen has a crossover upgrade kit for that model Yamaha NS1000M as well ( posted 6 yrs ago )
He did like them and noted an upgrade brings them up to compete with modern loudspeakers,
that’s saying something coming from a loudspeaker designer. & Audio engineer!
well he’s like Danny he’s into making money The upgrades are a LOT $ of money !
they both charge almost $1,000 for the crossover kits ( for 2 speakers )
I thought it was kind of quaint Mr Graves uses felt, or was it wool for material to control resonance.
I pointed out Danny uses something called No rez which is a little more high-tech.( like HUGELY better! ) !
If I had a spare $2,000 I’d buy both kits do one speaker with one do one speaker with the other then A-B test them and then do both / ALL speakers what was best.! ( or which you prefer )
If you get a kit from Mr. Gravesen do a speaker and ( I HOPE ! ) send it to Danny for testing he can test it against one of his maybe LOL.
BTW I REALLY like his ( Mr Gravesen’s ) design for a center channel speaker ! it is impressive ! ( but another topic and NOT vintage heck there were NO center channel back in the day ! )
Hi! Have you sent A Yamaha NS 1000mm to Gr research yet ?
well, you do not need to !
3 months ago he did the NS1000M ( on YouTube ) you may be familiar with it ? if not watch it !
i’m all in favor of upgrading fine classics to 21 st century ! they CAN be better!
oK FOLKS HERE HOW THEY CAN BE FIXED !the sony tower Sony SS-CS3 3
Danny, GR research said : " We’ve done that upgrade on the Sony tower Sony SS-CS3 3 and look forward to getting it back to you. "
here are the results AFTER it’s fixed !
the sony tower Sony SS-CS3 3
Impedance: Fairly balanced other than the dip in the lower midrange down, to 2.67ohms in the lower midrange.
the sony tower Sony SS-CS3 3
Spectral Decay: Much cleaner decay overall, but still a bit messy, should clean up with NoRez and some additional stuffing
the sony tower Sony SS-CS3 3
Vertical Axis: they get a fairly proud around 3Khz as you move up above the tweeter, but still fairly smooth overall.
the sony tower Sony SS-CS3 3
Horizontal Axis: still very smooth.
the sony tower Sony SS-CS3 3
read and weep
"We did Design something for the SSCS3 that worked out pretty well, but the main issue is that the impedance unfortunately drops to ~2.7 ohms at ~350Hz, which will make them quite hard to drive, and can make some amps run hot or cause them to become unstable.
Here are the new measurements: (old measurements in the attachments)
OnAxis+ crossover: Much smoother response than stock."
next crazy project (and a bit more difficult ) is to take one of the Sony SS-CS3 3 towers take off the little base and turn it horizontal and make it a upgraded center channel! we will reconfigure the speakers to a ideal center channel W-T/M -W configuration! the stock c enter channel is only W-t-W a lame 2 way!
Danny already has a kit for the Sony SS-CS5 book shelf makes it one of the "as good as $1k speaker " LOL
my challenge to him was well do the tower please ! ( above ) so, well DONE now ! yes pricy essentially the supertweeter becomes the tweeter and the tweeter becomes very nice dome midrange ! it woks and sounds fantastic thank you !
and i have a heap of these as i am doing the 11.1 system of the SONY SS-CS series !
HI folks confuse the tiny NS1000MM mini monitor ) w/ the BIG old classic vintage NS1000M which are quite good esp if you buy and fit the x -over kits fr GR research or trolls graveson ( sp ? ) -they cost like $1k which is about what a good used pair of the speakers go for in USA ! LOL
Hi! Have you sent A Yamaha NS 1000mm to Gr research yet ?
seeking Allison AL series ! vintage speakers esp AL130 , AL125
have the crazy notion to use allison as my HT speakers !
what do i do for a center channel ?
it really needs to be the BEST speaker all of them for HT and most ARE NOT!
we almost need to MAKE one using Allison drivers and HOW can i do that so it honors Roy allison’s genius ? ( And works ! )…
See more
i just scored a pair of used AL115 for $200 fr the original owner! they arrived today!
scored another pair of AL115 locally for $100 !
Recently scored a pair of good-condition Allison AL115 speakers fr CL ad for $100 !
hi well i got a Ben Q trevolo powered elctrostatic speaker am trying for a HT , TV center channel speaker
wowo it has amazing clear vocals ! very real !
i guess like you would expect of this type
but even w/ it’s two 4" woofers and two passive radiators the bass is weak It needs a sub !
So,have been using a Yamaha YMST 55D for the center channel for years it has a 6" woofer and two 2 way satellites i run it in mono of course .
tried using them BOTH at the same time and that actually is pretty good!
so I found a pretty good unusual fix for a center channel I’m using a ben q trevolo tiny electrostatic speaker in mono and an old Yamaha
YMST-55D computer speaker that has an 6 inch sub and two two-way satellites.
I’ve been trying to find speakers all in the same Sonic family enough to have a 7.1 Yamaha system for example the little NS100MM i sent to Danny @ GR research
and the drivers ARE little ! NS1000MM These are even smaller than I expected. !
Way too small to do any real sort of upgrades with. Looks like a 1/2" metal super tweeter with a 1" silk dome as a "mid" and a 4" woofer.
so not good enough for back, surround , side etc He says ":The size alone will make it really difficult to upgrade in any meaningful sense without a large external crossover. I’d probably just keep these as is, unless you really want to upgrade them."
about all i can think to do w/ them is use them to replace the 2 satellites of the YST-MS55D the drivers of the satellites now are only 3" woof & 3/4 " tweeter so the 3 ways of the NS1000MM should be an upgrade (and i have to do SOMETHING w/ the POS speakers ! )
ck out the horrible specs of the little 3 way NS1000MM !
( there are heaps of them for sale on e bay now about $200 a pair !
I had a couple of sony sscs5s for causal use in my deck/sunroom, tried the GR upgrade on it and was shocked by what i started to hear....moved it to my main listening room for a while. A few of those would probably make a nice budget surround music/HT rig with decent subs. You often see it on marketplace for close to nothing, but, they seem to have a lot of potential.
Another high value upgrade would be if you can snag some used Magnepan LRSs...With the GR upgrade on it, there are many high end speakers that can’t do what it does. But, you would need specific subs and take your time to integrate it with bass deprived magnepans, of course. If you are not a fan of the overall Magnepan sound however, don’t bother with it.
P.S.
You can find high quality crossover parts for close to nothing if you fish around on aliexpress ....no name joe items that sound better sometimes than even some of the usual GR stash).
yes once i buy the Sony , et all upgrade kits they are no longer "budget speakers" but can " out do " some $1k speakers! ! arguably ( as per Andrew Robinson they are a waste of $ =he says" parts don’t matter " and is wrong ! they do !
yes many cheapo speakers do not even HAVE a crossover ! the yamaha ( many models ) have ONLY a small cap on tweeter and Mid and are run as full range !
so even a cheap x -over is better than none at all!
i bought a bunch of cheap ali express x -overs and am sending them to Danny !
we are fixing the cheapo Yamaha NS6490 as sort of a proletariat project ! they sold MILLIONS of these 3 way ( $150 pair ? ) all over the world and some guys in the poor countries are stuck w/ them ! so a slight bit better would be greatly appreciated esp if it can be
done for third-world income prices !
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mini monitor ) w/ the BIG old classic vintage NS1000M which are quite good esp if you buy and fit the x -over kits fr GR research or trolls graveson ( sp ? ) -they cost like $1k which is about what a good used pair of the speakers go for in USA ! LOL 
NS1000MM These are even smaller than I expected. !
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