This Auction is for upgrade service for B&W brand speakers. Matrix 801-S3. 
This auction is for a pair of new crossovers for the 801-S3.


Service provided:
*Full Cross-over upgrade
*tweeter capacitors nedlab premium pp film capacitors
*midrange capacitors Nedlab hi-fi  pp film capacitors
*tweeter /midrange resistors film type non inductive resistors
*woofer section hybrid capacitors.
*woofer inductors thick 14/15 awg steel core low distortion inductors
*midrange inductors perfect lay air-core low distortion type
*Replace all resistors with higher power type
*Remove APOC pretection circuit.

In return you will get more powerful better extended low frequency, more dynamic cleaner midrange, and smoother higher resolution highs. The speaker will come to life with new levels of detail and dimension.

20+ years of experience in hi fidelity crossover design.


"They connected easily enough. The difference is night and day. They settled in really fast and the first thing we noticed was the transient detail. The speakers don’t sound lazy anymore. The transients are tight and impactful. The bass is presented beautifully- we were able to pull our alignment filter. There is more space.



another customer.....

“It's like my speakers went thru some metamorphosis. The refinement of the sound it's just honest and natural”

P.J.



another customer.....

"THANK YOU SO MUCH! soldered everything in, fired it up....WHAT A DIFFERENCE.

It has been a pleasure and I can't thank you enough."

D.C.



another customer.....

"I wasn't expect these much differences, clean yet tight and deep bass with wide music stage and astonishing mid.

With this full upgrade, I feel like, I'am done for speakers for next 20 years.   Great piece of work"

J.H


another customer.....

"I received my new crossovers for my B&W speakers and installed them, it was a very easy installation as everything was marked, after fitting the crossovers I realised one of the tweeters was faulty so I replaced both tweeters with the help and advice of this amazing man his knowledge is endless and he is so helpful now my speakers are sounding so good the bass is tight and controlled the midrange is open and clean and the top end is as smooth as silk, it is rare to find someone selling such a great product backed with the knowledge and support I have received I can highly recommend this product.

Thank you so much."

M. G.  England



another customer.....

"The XOs sound very good. The best way to describe the difference to the standard XO is that they allow a deeper look into the music: more detail, deeper bass, better "definition" and more texture to instrument sound. "

A.T.


another customer.....

"The 802 xovers sound great. It is like I removed a pillow from in front of them. "

R.W.


another customer.....

"First of all thank you for a super product. At first listen, It was well worth the wait.
I could immediately hear the improvement in The bass, mids and highs.
I specifically can hear the separation in the soundstage.
The bass is deeper and tighter and the mids are crystal clear especially when you listen to a female vocalist"

(S.L.)