Finally some pictures of my (actually your) 3W classic! I simply adore
their 70ies look more than any other 2+1 columns out there; just look
at our attic how cosy it is now...The weight: 47kg + 24kg of speaker
stands… Internal dimension: 26
X 49.5 X 32 cm that's 41 litres. Driver placement and front baffle
dimensions strictly as in you layout.
I won't comment on the sound, I'm
obviously biased like all other DIYer. Don't we all find our
"creation" the best thing ever made?
Still some general comments:
During the first set up phase I was a bit worried. The sound was
promising but it was like listening to a sub + two small size
speakers, where is the upper low end? It all sounded cold.
Therefore I've tried a full array of resistors for tweeter and mid
attenuation. Big waste of time!
The sound I experienced at the beginning was mostly due to drivers
brake in time, you have been warning us about that on many places in
your site. But really, it's a 100-150 hours break in time before
decisions on attenuation or refinements on internal damping should be
taken. Also the stand and final placement play a decisive role in
tweeter attenuation. In the end it is now as in your crossover sketch.
But, I reckon that if this loudspeaker would be placed in our much
larger living room, and consequently play louder; the tweeter should
definitely be more attenuated.
By using different materials, different caps and coils, different mid
box than in your project, in the end, I wonder if we are listening to
the same speaker. Coloration and lushness to the sound as you
described? I wouldn't say so.
To me the main characteristic of the 3W classic is how fast, energetic
and sharp the music is delivered. To illustrate what I mean, it is
exactly like the first time I saw an Audi in front of me with LED
blinkers on; how rapidly light would turned on and off !… so is the
music on the 3W classic, and it all sound so natural and full of
When I place my hands on the sides of the speaker or anywhere in the
front baffle I am amazed on how hardly no vibrations can be perceived.
This must be the consequence of using granite and by bracing with the
hardest wood I could find (so hard in fact, that my circular saw got
stuck half way in every cut I made…) The slightest movement by the
driver is transformed in sound rather than vibrations…
But it is not only roses. 3W classic is unforgiving with poorly
recorded music like, sadly, most Pop music is. There is such a
difference in sound when letter "S" are pronounced in a good
jazz record than in most of today's Pop records and even worse in 80's
ones. And forget about connecting the various family ipads &
iphones or even internet radio. Through these speakers the downsides
of mp3 and compression in general is highlighted as never before. And
this for my children is a serious drawback.
I've been testing them with 3 amplifications, My beautiful 100% ClassA
AMAudio, a somewhat ClassA Musical Fidelity A120, and the much cheaper
& eco-friendly ClassT Kingrex with only 12 watts. (with its PSU
and preamp). And I could safely say that 12 watts are plenty
sufficient! This IS THE speaker I'd recommend to all ClassT or D
For the records, the source in use is my outdated iMac + M2tech Hiface
+ Valab Dac (heavily modded).
3W classic is perfect for making a good but not so expensive systems
truly shine in a context of playing not too loud in a room 20-30 m2.
But above all, they are perfect in educating the ears of my children
to good music.
I will never be able to fully express my gratitude for your generosity
in letting us benefit from your level of knowledge. Kudos to you
Grazie mille, Federico
Tusind tak for hjælpen til dette store projekt. Nu hvor det er
fuldfoert ser jeg mere til min mand igen og hele familien nyder den
Mange hilsner fra Carina (Federico’s danske hustru)
(Many thanks for help during this big project. Now completed I see
my husband again and the whole family enjoy the good music. Best
regards from Carina (Federico's Danish wife)