October 16, 2010
Loudspeakers
are funny things and the folks who design them a rare breed of cat.
While the electronics designer is a technical bod and the cable designer
an abstruse alchemist, your speaker-maker is a driven passionate soul
who is making speakers not because he has 'identified a market' but
because he has to – he can't not. PSB is a classic example of that
drive.
It's part of the agglomeration of fine speaker designers that you
find in Canada (think Paradigm, Mirage, Energy...). Oddly enough, you
also get other populations that breed 'em. The Scandinavians and
Italians are also known for this as nations.
Anyway, PSB stands for Paul & Sue Barton, and I must confess I
knew little of them until now. It transpires that PSB offers speakers
from the truly acclaimed and terribly high-end to the stuff to nail to a
wall around a flat telly, with no fewer than six other ranges in
between, and a selection of subwoofers. Not to mention a fully mature
and wide range of in-ceiling speakers and a choice of models designed
for a cabinet install.
What we have on test here is the PSB Imagine series, down from the
Synchrony and Platinum ranges but above the G-Design, Image and Alpha
series.
"If you're in the market for a new surround system, I'd
definitely advise heading to your dealer for a demo of these classy
Canadian cabinets"
This series comprises a tower, a book shelfer, a centre and a
dipole/bipole. Lost my cherry I was sent a pair of the big floorstanders
(£1,200 approx for a brace), a set of the smaller surrounds (£600), a
centre channel (£500) and an SubSeries HD8 subwoofer. All except the sub
were finished in Black Ash (when the Dark Cherry finish would have been
so very much sexier).
The woofer itself was also black, but with a more matt veneer, – PSB
doesn't make dedicated subs for its separate ranges. This HD8 is an
over-engineered little cube of a woofer.
It looks all cute and ineffectual, but has a bonkers half kilowatt of
special BASH amplification inside. (This is to do with a marriage of
class AB and class D tech to get big efficiency and high sound quality),
as well as a set of 8in teeth in the front in the shape of a
far-wobbling and very high power-handling speaker driver.
It also sports two more tusks. These are a pair of passive radiators,
diaphragms installed with no magnet, but with a nice wobbly,
controlled-compliance suspension to hang it in.
While
allowing the cabinet to boom out some really loud waves thanks to the
huge moving surface area in such a wee box, the 'sealed' effect of the
diaphragms also means that this small set of pressure cones can be
energised at frequencies lower than you could ever tune the thing to,
without applying an elephant's trunk port to it after installation, like
a bass pipe.
The SubSeries HD woofers come in 8in and 10in sizes and in my room,
there is no question, I would have been wanting the 10 (or two of 'em)
for the greater scale. Yet, oddly enough for an 8in, it didn't lack in
any depth.
It loved the throbbing cod-reggae bass lines of my Sting DTS 5.1 CD,
and while I am trying to move on from James Cameron's Avatar BD as demo
material (partly because I've almost cut a spiral into the disc with the
laser in the Sony deck I use), I still find the opening frames awesome
as a test sequence.
As this film opens, Sensei-Cameron wants you to feel a whole lump of
cinematic awe, right up there with Close Encounters of the Third Kind.
He had me at hello, from the very first frame.
Liquid Iron
The depth of the background singing of the natives and then the space
travel throb was impressive, actually waking up some resonances in my
room. But the real impression was from PSB's Imagine series speakers
themselves. They have a snap and attack that belies their cost, with a
real fat lump of quick dynamism in there, too.
What this is about is the wonder of Ferrofluid, a megabuck-per-gallon
liquid iron goop, which when injected into the voice coil gap of a
tweeter, damps its motion mechanically, so it will only move when pushed
rather than 'flap'.
It also offers an immensely quick cooling effect being 'ferric' it
will hang in the gap and stay there and, being a metallic conductive
liquid, will also conduct heat from the coil to the huge heatsink that
is the magnet itself. Thus, the coil doesn't heat up with big peaks and
instead of the electrical qualities of that coil changing as it gets
superheated, it works much better.
And if that's all too technical for you, just know that all the above
jargon translates to a more emotionally involving detail experience.
It's in the strings in Sting's Food For a Crow, or better yet, the
impactful crescendo as we see the spaceship off the planet Pandora, or
the thwap! As the shuttle enters the thick atmosphere of the moon.
And it can't all be the posh tweeters, even if they are all the exact
same titanium-dome all-around. It has to be that 5.25in midrange
driver, too. Used just once in the surround/'book shelf' model, but with
two each in the towers and centre enclosures, these are made of
mineral-loaded Polypropylene with pukka rubber surrounds, rather than
some foam, and are well-damped and long of travel.
Curved cabinets
The enclosures are as sexy and well put together as any I have seen.
The grilles attach snugly, and should you choose to forgo them, there's
still a natty PSB logo mounted in front of the tweeter. I still wished
I'd auditioned a set finished in dark cherry, though, as my room has a
wood finish and would have offset more of the form of the speakers'
shapes.
These are described as compound-curved, which is all about avoiding
the standing waves caused by having opposite-facing and parallel box
internal surfaces.
In their rears, the Imagine speakers all have ports. One each for the
bookshelf and centre and two on the towers. The latter arrive with a
single plug and you can play with blocking one or other port. As one is
long and the other very short, you have options, using neither or either
port hole blocked, and are encouraged to experiment.
The blocker plugs are substantial rubber things, but you only get one
and the other is an option, which seems a parsimonious thing to do if
the makers mean you to play and see, and I think they do.
PSB's website and manuals reveal a deeply committed outfit with a
passion for music and good. It just comes across in how they write about
their speakers. The manuals, in particular, are fantastically detailed
and considered, advising the PSB buyer on everything from speaker
placement to the dangers of driving low-powered amplifiers to their
limits.
These Imagine speakers are an array that's very easy to fit and
setup. And while it's three grand's worth of kit, I reckon they hit way
above their weight and can be compared to other brands' systems around
the £5,000 mark.
They have a lovely sound of real quality and power and all they
lacked was the bigger scale that serious money can buy. But of course,
PSB has two more ranges upstream for that.
If you're in the market for a new surround system, I'd definitely
advise heading to your dealer for a demo of these classy Canadian
cabinets.