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Multi-Way Conventional loudspeakers with crossovers

yamaha ns10
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Old 9th May 2016, 12:00 PM   #1
2stuffed is offline 2stuffed  Australia
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yamaha ns10
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Hi,
I have a set of Yamaha NS10 speakers and wanted to build something with more bass using these drivers and crossover.Has anyone got any ideas if this can be done.Any help would be great.

thanks
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Old 9th May 2016, 04:28 PM   #2
Mr Terrorist is offline Mr Terrorist  United Kingdom
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Hi, im new here and Ive also come seeking advice and learning. What I can tell you is that I had a brief encounter many years ago with the ns10 when I was studying a studio engineers course.

They are lovely speakers but do not have the bass extension of larger units. They are generally nearfield monitors in larger studios or the only monitors in a small home/budget studio. My guess would be that Yamaha designed and manufactured the drive units specifically for these cabs and that is why they have always been so popular - they are very well balanced. I think they will have already got the best out of them.

Ive bought a second pair of TDL RTL2s and have decided to start by upgrading the cross over. The standard units are very cheap and I am very interested to hear the difference quality components make. I then might look at replacing the drivers with more expensive ones. Ive just had the back plate off, it looks there is plenty of room for improvement for both crossover and drivers, and internal wiring.

Hope this is of use
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Old 9th May 2016, 07:42 PM   #3
Lojzek is offline Lojzek  Croatia
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There is 2 potential tweaks to improve bass extension response.

1. Modify the XO filter to get rid of the wide midrange hump
and pad the tweeter down somewhat

2. Make a vented box out of it.
Attached Images
File Type: jpg NS10 manufacturer's.jpg (83.1 KB, 321 views)
File Type: jpg NS10 waterfall.jpg (50.4 KB, 307 views)
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Old 9th May 2016, 08:04 PM   #4
sreten is offline sreten  United Kingdom
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Hi,

Forget reusing the drivers in a different loudspeaker.

Sell them for what they are (they go for more than
they are worth in any hifi situation IMO, studio staple)
and buy some better used speakers, is a good plan.

rgds, sreten.

FWIW a rebuild to a vented floorstander is possible,
but it just seems generally a very bad idea overall.
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Old 9th May 2016, 08:25 PM   #5
sreten is offline sreten  United Kingdom
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Quote:
Originally Posted by Mr Terrorist View Post

Ive bought a second pair of TDL RTL2s and have decided to start by upgrading
the cross over. The standard units are very cheap and I am very interested to
hear the difference quality components make. I then might look at replacing
the drivers with more expensive ones. Ive just had the back plate off, it looks
there is plenty of room for improvement for both crossover and drivers, and
internal wiring.
Hi, don't cross pollute threads, it helps no-one, rgds, sreten.

The above information is entirely irrelevant in this thread.
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Old 10th May 2016, 09:17 AM   #6
Mr Terrorist is offline Mr Terrorist  United Kingdom
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Yes sir!
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Old 10th May 2016, 09:33 AM   #7
Mr Terrorist is offline Mr Terrorist  United Kingdom
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Hi Lojzek

Are you saying you can improve a speakers sound by modifying the crossover? This something Ive been thinking of myself. How easy is it to work out the crossover points from the components already used?
Regards
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Old 10th May 2016, 09:53 AM   #8
picowallspeaker is offline picowallspeaker  Italy
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Quote:
Originally Posted by Lojzek View Post

2. Make a vented box out of it.
In BR the woofer is subjected to double force ( pressure) than in PS
Dunno in the thin paper cone could stand that

Regarding crossovers, you'll likely to make it worse !
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Old 10th May 2016, 10:13 AM   #9
Mr Terrorist is offline Mr Terrorist  United Kingdom
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Hi Pico

That makes sense, I have just been watching a AV showrooms vid with a 40 yr vet sepaker designed talking about weight of the cone, very interesting.

Would i also be correct in thinking to port these boxes would need some serious calculations to get it right?

Regards
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Old 10th May 2016, 11:13 AM   #10
dragonweed is offline dragonweed  Hungary
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If you try to port a sealed box (assuming the driver is designed to be used in sealed box) usually the result is pretty dreadful....
With a Qts value of a typical closed box woofer, the ported box will have terrible bump in the upper bass, and nothing below.
Over Qts of 0.42-0.45 (max.) it is not smart to waste your time with reflex design, even if some design software allows it....
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