B&W 801 Matrix S3 crossover schematics?

[arildji]

Can anyone help me get hold of the crossover schematics for the B&W 801 Matrix S3 loudspeaker? I am planning to have new crossovers with better components made, and need the topology schematics. Thank you.

[inertial]

Hi Arildji,
by SUONO November 1992 (italian magazine)
801 matrix series |||
regards,

[arildji]

Thank you very much. I really appreciate your contribution.

I am no expert in xovers, but to me this looks like a quite simple and straight forward xover. Maybe to simple for a 4th order, 24 db/octave xover? Could really this be the correct diagram? Comments anyone?

[inertial]

Hi Arildji, (sorry for my english)
The oldest version was 24dB , the series 3 seems to me near a 18dB......... From the photos of the magazine the numbers of the components is correct.
Not a problem, when you'll open your series 3 to unplugg the wires, you will check the numbers and the value of the internal x-overs.
Be ware at the polarity of the midrange, the only doubt I have about the schema ( perhaps it can be right with a 18dB) check it very well.

P.S. the simplycity is only apparent !
P.S. before be happy look at the price of a quartet of Solen 5mH inductors!!!!!

[rabbitz]

B&W are quite good and if you give them the serial number of the product and the date of warranty registration, they'll send you the schematic. Just received one for one of their sub amps that I had to repair.

[K-amps]

In the diagram, there is a 2.2mH inductor going to the tweeter? that can't be right.... Also it is displayed like a resistor... so I'd guess it is a resistor probably 2.2ohm.

Can anyone confirm? thanks!

[Audiophilenoob]

is it just me... or whenever xover's are released for pricey speakers they seem to be very basic??

this one is sort of old... but I've seen the wilson watt puppy 6's xover and it's quite simple...

not that complexity necessarily = superior... but lots of people seem to "diefy" the xovers etc by big dollar companies

sort of laughable to me... as I've seen quite a bit better from DIY communities... (if better means more complex )

[Audiophilenoob]

Originally posted by K-amps
In the diagram, there is a 2.2mH inductor going to the tweeter? that can't be right.... Also it is displayed like a resistor... so I'd guess it is a resistor probably 2.2ohm.

Can anyone confirm? thanks!

it is a 2.2 ohm resistor...

that's not the inductor symbol

[K-amps]

Originally posted by Audiophilenoob
is it just me... or whenever xover's are released for pricey speakers they seem to be very basic??

this one is sort of old... but I've seen the wilson watt puppy 6's xover and it's quite simple...

not that complexity necessarily = superior... but lots of people seem to "diefy" the xovers etc by big dollar companies

sort of laughable to me... as I've seen quite a bit better from DIY communities... (if better means more complex )

I own both the 1985 model 801's (series 80) and the 1995 model matrix 801 S3.

The series 80, had much more components and to me sounds better than the newer S3 which plays much louder and cleaner but not as musical. The Series 80 was voiced by the late Dr. Bowers himself. The S3 was made in an era where it was hype to create a crossover with fewer components that were thought to "waste power". Even the Iron core inductors were chosen over aircore for better efficiency....

[Audiophilenoob]

Originally posted by K-amps


I own both the 1985 model 801's (series 80) and the 1995 model matrix 801 S3.

The series 80, had much more components and to me sounds better than the newer S3 which plays much louder and cleaner but not as musical. The Series 80 was voiced by the late Dr. Bowers himself. The S3 was made in an era where it was hype to create a crossover with fewer components that were thought to "waste power". Even the Iron core inductors were chosen over aircore for better efficiency....

this may be true... but this isn't the only xover that's just simple as crap