YAMAHA NS1000 crossover Tweaks

[tmuikku]

Yep, Genelect s45ya is active speaker: ns1000m with Genelec s30 triamp amplifiers with modified crossover. I've got the schematics but not exact values for the s45ya crossover. I have the units here and someday maybe dissect them to measure components. However, one might be better with some DSP xovers as many have suggested. Attachments show s30 crossover.

[pieter t]

Originally Posted by georgebrooke

Hi Beachmountain,

please let me know how you get on with this. I am still holding my breath on a B4 but if by New Year there is not even a rumor about it, well then I guess I shall use a ...what? Any thoughts on a good active crossover for the NS1000M? I only plan to bi-amp.

George

George,

Why going through all the fuss of a separate device?
When biamping you can provide the bass amp with a 2nd order low pass passive filter at the input (at line level); it needs a capacitor and a choke.
The same (but then high pass of course) for the F5 amplifier which has 100k input impedance; you could make that input resistor a good quality multi turn one to set the balance with the bass.
2nd order will do (the speaker's filter is also 2nd order).
In my opinion this is preferable over a separate device with all associated electronics, cables a.s.o., also sound wise.

[decca4]

Originally Posted by pieter t

George,

Why going through all the fuss of a separate device?
When biamping you can provide the bass amp with a 2nd order low pass passive filter at the input (at line level); it needs a capacitor and a choke.
The same (but then high pass of course) for the F5 amplifier which has 100k input impedance; you could make that input resistor a good quality multi turn one to set the balance with the bass.
2nd order will do (the speaker's filter is also 2nd order).
In my opinion this is preferable over a separate device with all associated electronics, cables a.s.o., also sound wise.

I totally agree with pieter.
The solution that you are contemplating will introduce more problems than what that route will offer in sonic benefit.

Stefan

[pw8888]

I am selling a Pair of Custom filter from jantzen-audio for the NS1000
Mounted.
NEVER USED OR SOLDERED
Brand new
Selling the faceplate as well with an extra pair of bidding if needed

pm me is interested

phil

[Etnier]

This is a very long thread and much of is is heated or off-topic. I might have missed this, and if so, apologies, but:

Does anyone have information for rebuilding NS1000 crossovers using quality contemporary replacement parts? Maybe a parts list and some documentation? I dont' want to 'enhance' the devices, just replace old parts with high-quality replacements.

[Inductor]

Look here for a broad example of what should be done to upgrade DIY in another speaker. Post your questions and pictures for more detailed information.
x-over for Kef iQ30

[Etnier]

Thanks- will do.

[sreten]

Originally Posted by Etnier

This is a very long thread and much of is is heated or off-topic. I might have missed this, and if so, apologies, but:

Does anyone have information for rebuilding NS1000 crossovers using quality contemporary replacement parts? Maybe a parts list and some documentation? I dont' want to 'enhance' the devices, just replace old parts with high-quality replacements.

Yamaha NS-1000 Jantzen-audio crossover - AudioKarma.org Home Audio Stereo Discussion Forums

Hi, All in the above link, rgds, sreten.

http://www.troelsgravesen.dk/Yamaha-NS1000.htm

[thetubeguy1954]

I just obtained a pair of NS-1000M for $500 that my friend a master cabinet / furniture refinisher, who works in the homes of multi-millionaires refinishing scratches in their mega-buck tables etc. Is going to completely sand down and refinish in the color Oxblood with a high gloss cover, as a favor for me.

I compared these NS-1000M directly against my Fostex FE208ES-R drivers with Fostex T-900a tweeters in Sachiko double-back-loaded horns and to say I was amazed at how good the NS-1000M sounded, would be an understatement! I was so impressed want to first rebuild the XO with today's high-quality components and if I like what I hear as much as I believe I will, I'll purchase a second pair of NS-1000M and stack & invert them on top of the first pair! So it will be W-M-T T-M-W on each side! Has anyone tried this yet? If so, what were the pros and cons of doing this sonically?

I'm listening to: For The Moment by Bob Mintzer Big Band

Thetubeguy1954 (Tom Scata)

[kstlfido]

Originally Posted by Etnier

This is a very long thread and much of is is heated or off-topic. I might have missed this, and if so, apologies, but:

Does anyone have information for rebuilding NS1000 crossovers using quality contemporary replacement parts? Maybe a parts list and some documentation? I dont' want to 'enhance' the devices, just replace old parts with high-quality replacements.

Hi Etnier-

For a more standard crossover upgrade- see my post #201 and read on from there. The 6 3.5uF caps (C3) are not electrolytics, as poster morksbeanbag points out in post #209. So you could leave those. I chose to replace them anyway.

For the NS-1000 schematic- see post #196.

Hope this helps. They are great speakers.

-Kent