Hi i need some help,, i need to cange the middrange speakers on my 802N
I found a sett middrange speakers For 802D on a web site for sale..
Does they fit directly in my 802N or do i have to make som changes ?
I found a sett middrange speakers For 802D on a web site for sale..
Does they fit directly in my 802N or do i have to make som changes ?
B&W puts a part number sticker on the rear of the FST magnet so you can be certain of getting the correct replacement. You should be able to buy a FST driver from B&W as a spare part for your 802N.
B&W Group North America Service & Support - B&W Parts Price List
B&W Parts Retail Price List
This pricing applies to B&W Group North America only.
EXAMPLES
LF00175 is used in the generic model 802D $312
LF02359 is the 802D2 MIDRANGE $347.52
LF00264 is the year 2012 model $324
B&W Group North America Service & Support - B&W Parts Price List
B&W Parts Retail Price List
This pricing applies to B&W Group North America only.
EXAMPLES
LF00175 is used in the generic model 802D $312
LF02359 is the 802D2 MIDRANGE $347.52
LF00264 is the year 2012 model $324
Attachments
Sorry.
I asked iff a middrange from a 802D vill fiitt in my 802N as an uppgrade .. does iit fit directly in the speaker or do i have to modfy somting.
I asked iff a middrange from a 802D vill fiitt in my 802N as an uppgrade .. does iit fit directly in the speaker or do i have to modfy somting.
B&W stopped manufacturing the FST in the 802N series in 2005, after a 7 year run.
B&W redesigned the FST midrange for the 802D and changed the cone construction, voice coil venting, and the T/S parameters to support the 3kHz crossover to the diamond tweeter. New part number.
If you have "trained ears" you will probably hear a difference.
Best, Remove your FST midrange and look for a part number, and search for a replacement with the same part number.
Naturally, a very low price on a 802D FST midrange is probably worth a hearing test.
"The innovations B&W has included in its new 802D series include tweeters with diamond domes, redesigned Kevlar FST midrange cones, new woofer diaphragm materials, and a new crossover configuration. And while to the casual observer the 802D may look much like its predecessor, the Nautilus 802, the 6" Kevlar-cone midrange driver, in B&W's signature yellow tint, has been updated with the addition of a foam damping ring under the cone periphery, and its more powerful but smaller neodymium magnet structure and redesigned basket mean that obstruction of the cone's rear radiation is greatly reduced. The controversial FST midrange cone is still intended to break up in a controlled manner, but even more uniformly and predictably."
B&W redesigned the FST midrange for the 802D and changed the cone construction, voice coil venting, and the T/S parameters to support the 3kHz crossover to the diamond tweeter. New part number.
If you have "trained ears" you will probably hear a difference.
Best, Remove your FST midrange and look for a part number, and search for a replacement with the same part number.
Naturally, a very low price on a 802D FST midrange is probably worth a hearing test.
"The innovations B&W has included in its new 802D series include tweeters with diamond domes, redesigned Kevlar FST midrange cones, new woofer diaphragm materials, and a new crossover configuration. And while to the casual observer the 802D may look much like its predecessor, the Nautilus 802, the 6" Kevlar-cone midrange driver, in B&W's signature yellow tint, has been updated with the addition of a foam damping ring under the cone periphery, and its more powerful but smaller neodymium magnet structure and redesigned basket mean that obstruction of the cone's rear radiation is greatly reduced. The controversial FST midrange cone is still intended to break up in a controlled manner, but even more uniformly and predictably."
You're stuffed, like everybody else is who owns a speaker with a driver that is no longer available and can't be repaired. Unless they have some NOS on a shelf of course.
What they seem to be trying to tell you is that it will most likely fit, but may sound different.
The midrange driver plus a rear frame rubber gasket plus an aerodynamic rear-magnet pod are "pulled" onto the oval cabinet by a long "draw bar" screw rod which goes all the way to the rear vent hole. There are no other front frame mounting screws.
The A3881 midrange from your 802N is not an exact physical match to the LF00175 midrange in the 802D.
Your 802N A3881 has a thicker magnet and shorter pod casting than the 802D LF00175.
With some luck, the screw rod has enough extra threads to reach the shorter LF00175 midrange used on the 802D.
The LF00175 midrange used on the 802D also uses a different crossover circuit.
The A3881 midrange from your 802N is not an exact physical match to the LF00175 midrange in the 802D.
Your 802N A3881 has a thicker magnet and shorter pod casting than the 802D LF00175.
With some luck, the screw rod has enough extra threads to reach the shorter LF00175 midrange used on the 802D.
The LF00175 midrange used on the 802D also uses a different crossover circuit.
Attachments
Thanks for replys i will try fit them ... but if anyone have some ideas for anny crossower uppgrades ,,lett me know😀Thanks
i thought they share same HH11444 drawbar and isolator gasket, new diamond has different part no for drawbar
Nautilus 802 Spare Parts & Accessories n802
802D Spare Parts & Accessories d802
thats m6 thread, threaded rod from local hardware store if problems
Nautilus 802 Spare Parts & Accessories n802
802D Spare Parts & Accessories d802
thats m6 thread, threaded rod from local hardware store if problems
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In the 1997 document: The 802N uses a HH10054 drawbar screw rod.
In the 2004 document: The 802D uses a HH11444 drawbar screw-rod.
They are probably close enough in length such that B&W now only stocks the newer/longer HH11444 part. It is good news that they are interchangable.
The different crossover circuits used in the newer 802D is the main switich-over issue.
In the 2004 document: The 802D uses a HH11444 drawbar screw-rod.
They are probably close enough in length such that B&W now only stocks the newer/longer HH11444 part. It is good news that they are interchangable.
The different crossover circuits used in the newer 802D is the main switich-over issue.
The midrange crossover topology and component values on the 802N are similar to the circuit used on the 802D. I would probably start by keeping the 802N crossover with the new midrange from the 802D, and listen +measure +simulate before converting the crossover components to the 802D values.
Out of respect for B&W intellectual property rights I will not post circuits here. The B&W service manuals for the 802N and 802D contain detailed schematics.
Out of respect for B&W intellectual property rights I will not post circuits here. The B&W service manuals for the 802N and 802D contain detailed schematics.
Still havent heard what happened, is it burned coil (infinite ohm) or distorting speaker.
If its distorting speaker, turn phase plug off, turn slice of paper between voice coil and center piece. If theres debris between it should fall out cause ventilation is open on back.
I've done this couple of times
If its distorting speaker, turn phase plug off, turn slice of paper between voice coil and center piece. If theres debris between it should fall out cause ventilation is open on back.
I've done this couple of times
Do somone have some pichures innside the middrange marlan head .. i need too know how the damping material is fidded inside there ,,,,,
Is it wrapped arround the rod or is it just innside the walls of the marlan head?
Thanks
Is it wrapped arround the rod or is it just innside the walls of the marlan head?
Thanks
I think he means like "Mind me asking what happened to the previous driver that needs to be replaced....was it damaged?"
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