Recording - November 2014 - 24

B Y M I K E M E T L AY

It hasn't been that long since we reviewed
a pair of Samson monitors; the Resolv SE
(February 2014) was a wonderful surprise,
combining very listenable sound quality with
a price anyone could afford. No sooner did
that review hit the stands than Samson
announced the next step in the Resolv monitor lineup-the Resolv RXA monitors, which
bring together a new woofer design with
that relatively rare but noteworthy beast, a
ribbon tweeter.
For those who might not be familiar with
the technology, ribbon tweeters are based
on a design originated by Dr. Oskar Heil
and sold by ElectroStatic Sound (ESS) since
the early 1970s. In very simple terms, this

size, with or without a subwoofer. The
speakers were mounted in an equilateral
triangle on Ultimate Support stands,
roughly 60" apart, and isolated with a
set of Sorbothane domes of 30 durometer stiffness (my thanks to Bruce Black for
keeping me supplied!). The listening field
was kept clear of console reflections, and
after burning the speakers in for a day
with loud music of various sorts, I settled
in to adjusting their response and listening at a nominal SPL of about 80 dBA on
average.
I spent more time than usual playing with
the EQ trims on the back of the speakers; I
think that was due in part to the fact that I was

Samson Resolv

RXA6 Active Studio Monitors

An unusual but well-respected tweeter design yields one fine monitor
tweeter, originally called the Air Motion
Transformer, consists of a tightly folded sheet
of plastic in a strong magnetic field. When
electricity hits it, it expands and contracts in
a manner similar to that of an accordion bellows or human vocal cords; the folded
tweeter packs a lot of surface area into a
very small space, and the result is a speaker that looks like a small point source but has
the air delivery of a much larger device. The
end result, when done right, is wide treble
extension and very low distortion.
The Resolv RXA isn't the first ribbon-tweeter speaker manufactured by Samson-that
honor goes to the well-liked Rubicon speakers sold in the early 2000s (we reviewed
the Rubicon R6a in January 2006). With
that pedigree plus the fact that I'm a fan of
well-made ribbon tweeters in monitors, I
was eager to take the new speakers out for
a test run. Would they continue the tradition
of "lots of speaker for not very much
money" begun by the Rubicon and continued by the Resolv SE?
Small or not so small
As was the case with the Rubicon, the
Resolv RXA is available in two woofer sizes:
the RXA5 with a 5" woofer and the RXA6, the
model I received for review, with a 6" woofer.
Aside from woofer size and amplifier power,
all other features are identical between the
two models. So what have we here?
24

RECORDING November 2014

The RXA6 starts with a new woofer
design, a 6" copolymer woofer with a butyl
surround, and pairs it with a 34 x 27 mm
Air Displacement Ribbon tweeter (Samson's
version of the ribbon tweeter technology).
It's a bass reflex system, with a large rearfiring port near the upper edge of the sturdy
0.6" thick MDF cabinet that lends rigidity at
the cost of a not-trivial 19-pound weight.
The RXA6 is biamplified, with 75 Watts
RMS for the woofer and 25 W RMS for the
tweeter; its Linkwitz-Riley crossover is set to a
slope of 12 dB/octave frequency of 3.5 kHz.
The claimed frequency response is 45 Hz to
27 kHz, with no tolerances given (±3 dB is a
reasonable guess based on the specs of other
Samson monitors, but it's only a guess).
The rear panel offers balanced inputs on
XLR and TRS and unbalanced inputs on
RCA. Controls include a level pot with a
center detent and two recessed trimpots for
high and low frequency EQ. Power is provided via a standard IEC power cable, and
there's easy access to the fuse and a pair of
6 mm metric thread inserts for a wall
mount. When power's turned on, the logo
on the front fascia lights with a white LED.
Setup and tuning
I placed the Resolv RXA6 speakers in my
office/studio at Music Maker Publications,
a reasonably well-treated room that works
well with nearfield monitors up to 8" in

given both high and low frequencies to work
with (the Resolv SE has a switch for HF control but no LF control at all), and in part to my
curiosity as to what the EQ was actually
doing. The specs and manual don't specify
details, so I listened first and got details from
Samson later.
Samson states that these are 6 dB/octave
shelving filters with corner frequencies of 80
Hz (LF) and 8 kHz (HF). They can boost/cut
by ± 6 dB, which is a pretty wide throw for
small monitors and more than enough to get
a careless engineer in trouble... my rule of
thumb is that if you have to tweak the EQ on
a speaker by more than 2 dB to get it to
sound right, you might want to consider moving your speakers or playing with your room
acoustics a bit.
I found the HF adjustment more than
enough to make the tweeters sound hissy or
dull; this adjustment is usually intended to
correct for console bounce or an overly
absorptive room. While my room does
have issues, those aren't two of them, so I
quickly settled on leaving the HF set flat. On
the other hand, I played a lot with the LF setting; these speakers' rear porting seemed
to interact with the front wall of the room,
giving me a bit of bass reinforcement that
was offset nicely by the LF trims. I couldn't
decide whether I was happiest with them
set flat or with a 1-2 dB cut; I think I could
happily work with either.



Recording - November 2014

Table of Contents for the Digital Edition of Recording - November 2014

Contents
Recording - November 2014 - Cover1
Recording - November 2014 - Cover2
Recording - November 2014 - 1
Recording - November 2014 - 2
Recording - November 2014 - 3
Recording - November 2014 - 4
Recording - November 2014 - 5
Recording - November 2014 - Contents
Recording - November 2014 - 7
Recording - November 2014 - 8
Recording - November 2014 - 9
Recording - November 2014 - 10
Recording - November 2014 - 11
Recording - November 2014 - 12
Recording - November 2014 - 13
Recording - November 2014 - 14
Recording - November 2014 - 15
Recording - November 2014 - 16
Recording - November 2014 - 17
Recording - November 2014 - 18
Recording - November 2014 - 19
Recording - November 2014 - 20
Recording - November 2014 - 21
Recording - November 2014 - 22
Recording - November 2014 - 23
Recording - November 2014 - 24
Recording - November 2014 - 25
Recording - November 2014 - 26
Recording - November 2014 - 27
Recording - November 2014 - 28
Recording - November 2014 - 29
Recording - November 2014 - 30
Recording - November 2014 - 31
Recording - November 2014 - 32
Recording - November 2014 - 33
Recording - November 2014 - 34
Recording - November 2014 - 35
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Recording - November 2014 - 37
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Recording - November 2014 - Cover3
Recording - November 2014 - Cover4
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