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Hi All,
Soooo, the good "old" Natalie P. I built a set of these back in 2010 - and where really happy with them for several years. But you all know, fingers start tikling and you have to do a new build, which was the Khanspires in 2013. These speakers shares the tweeter, and was sold out at PE when i was purchasing materials for the Khanspires - but they had RS28F in stock so i took a pair of those, and took the RS28A from my older Nat`s to use in the Khanspires. Great idea right? When switching out the RS28A`s, i mounted RS28F in Nat`s without thinking any more about it. Now several years later - Khanspires is out of use (i think they went out already around 2016/2017), and i have since enjoyed speakers based on Linkwitz works (LXmini + LX521.4). Earlier this winter i had an amplifier break down (DIY as well), which forced me to the good old Natalie P`s again. But they did not sound as i remember them, not being as "open" as they where - atleast as how i remember them. I knew i changed the tweeters so i was starting to look for some replacement, RS28A is no where to be found and out of production - the new replacement from PE cant be compared, they are very different.
I found that JonMarsh suggested using DA25TX008 - which would probably be a great replacement. But it suffers of different dimensions on the faceplate which does not fit my cabinets. Evil Twin also had recommandation of using the SB Acoustics SB26CDC-C0004 in a thread - same issue for me. Not suitable dimensional wise. So the hunt started, now i have been using Linkwitz design for several years so i did a quick checkout with Seas immediatly finding the 27TBFC/G tweeter which i tought looks promising for my target, its a metal dome with low FS and sensitivity close to the RS28A`s. Oh and its face plate is 0.4mm smaller in diameter - perfect! Only some minor changes to the crossover and i feel reasonable happy with the result. Much more crispy and detailed sound. Now i went from Linkwitz LX521.4 to the Natalie P`s. Let me tell you that the Nat`s absolutely have the clarity and great details - but LX521.4 have a stage width that blows my mind. Nat`s cannot compare there, and where never ment too, they are in two different price groups. But price wise, Nat`s beat the sh.. out if LX521.
I have attached the crossover here. Tweeter limiting resistor should have been larger, but its quite a lot of work to do this change for me. instead of 1R it should have been ~1.6R as it is slightly sharp. I did run a measurement on REW buts its on a different computer so i will upload these results later - it very similiar to the ones from VituixCAD, just a little more smoother.
EDIT: Ahh, forgot, this must be included. You know these Khanspires where decommisioned, and i spared the parts of these including the tweeters... Yes - INCLUDING the tweeters. Now i left these laying around in the basement safe on a shelf. Girlfriend found these to be great balasts for hanging up bedclothes on the shelf.. I did not notice for two-three years and when i found out they where really rusty - garbage really, and was then thrown away(the tweeters, gf have been forgiven).. Watch over your stuff, you never know what damages it 🙃
Stian
Soooo, the good "old" Natalie P. I built a set of these back in 2010 - and where really happy with them for several years. But you all know, fingers start tikling and you have to do a new build, which was the Khanspires in 2013. These speakers shares the tweeter, and was sold out at PE when i was purchasing materials for the Khanspires - but they had RS28F in stock so i took a pair of those, and took the RS28A from my older Nat`s to use in the Khanspires. Great idea right? When switching out the RS28A`s, i mounted RS28F in Nat`s without thinking any more about it. Now several years later - Khanspires is out of use (i think they went out already around 2016/2017), and i have since enjoyed speakers based on Linkwitz works (LXmini + LX521.4). Earlier this winter i had an amplifier break down (DIY as well), which forced me to the good old Natalie P`s again. But they did not sound as i remember them, not being as "open" as they where - atleast as how i remember them. I knew i changed the tweeters so i was starting to look for some replacement, RS28A is no where to be found and out of production - the new replacement from PE cant be compared, they are very different.
I found that JonMarsh suggested using DA25TX008 - which would probably be a great replacement. But it suffers of different dimensions on the faceplate which does not fit my cabinets. Evil Twin also had recommandation of using the SB Acoustics SB26CDC-C0004 in a thread - same issue for me. Not suitable dimensional wise. So the hunt started, now i have been using Linkwitz design for several years so i did a quick checkout with Seas immediatly finding the 27TBFC/G tweeter which i tought looks promising for my target, its a metal dome with low FS and sensitivity close to the RS28A`s. Oh and its face plate is 0.4mm smaller in diameter - perfect! Only some minor changes to the crossover and i feel reasonable happy with the result. Much more crispy and detailed sound. Now i went from Linkwitz LX521.4 to the Natalie P`s. Let me tell you that the Nat`s absolutely have the clarity and great details - but LX521.4 have a stage width that blows my mind. Nat`s cannot compare there, and where never ment too, they are in two different price groups. But price wise, Nat`s beat the sh.. out if LX521.
I have attached the crossover here. Tweeter limiting resistor should have been larger, but its quite a lot of work to do this change for me. instead of 1R it should have been ~1.6R as it is slightly sharp. I did run a measurement on REW buts its on a different computer so i will upload these results later - it very similiar to the ones from VituixCAD, just a little more smoother.
EDIT: Ahh, forgot, this must be included. You know these Khanspires where decommisioned, and i spared the parts of these including the tweeters... Yes - INCLUDING the tweeters. Now i left these laying around in the basement safe on a shelf. Girlfriend found these to be great balasts for hanging up bedclothes on the shelf.. I did not notice for two-three years and when i found out they where really rusty - garbage really, and was then thrown away(the tweeters, gf have been forgiven).. Watch over your stuff, you never know what damages it 🙃
Stian
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