Review: Wilson Audio Grand Slamm Speaker


Category: Speakers

Since this is a site largely based on trading second hand products, I thought it worthwhile to share one man's experience with a sensational speaker that is much, much older...and fortunately much, much depreciated in value when I traded in for it! The theme here is do not bypass much older products just because they are older technology!

First, let me preface that i am not making ANY claims about "best"...only my own conviction abouy how things sound to ME and MY EARS. Now off to the review!

INTRO
The Grand Slamms are 16 years old...wow. (The original owner bought them 1994, listened a bit...then put them in storage when he moved countries...the plastic film on the piano gloss laminate was still on after 16 years when they arrived! The finish is Mint! The feet had never even been attached.)

INITIAL IMPRESSIONS
With an ear that prefers my Zanden DAC, CJ pre-amp, Gryphon Antileon and Sonus Faber STradivari sound, you can imagine i like warmth (but also a fair amount of technical capability.)

IMHO, relative to every speaker (save Alexandria) the Wilson Grand Slamm produces the reference sound for my ears.

Capabilities
- Musicality. I will state i have never considered buying any Watt Puppy or Maxx I or II...not my cup of tea. I liked Sasha but still preferred my STrads by a margin.

I never associated them with musicality only accuracy...i have preferred even colored musicality (whatever that means!)

HOW and WHY?
- Effortless, effortless, effortless. Wilson to my ear achieves musicality by creating indefatiguable, inexhaustable, inert obelisques that allow sound to pass through them as if the obelisques were not there. Nothing phases these speakers...it's just sound passing through
- Specifically to date, no sound, no dynamic, no cymbal brush, no whisper, no crash, no reverb seems to pass through with any edits.
- there appears to be no compression of sound
- the Grand Slamm also is able to allow for instrumental separation...not just delineation of instruments into their own space...but also their own rhthym, subtle volume contrasts between notes...each musician is playing separately through the speakers, and the speakers do not confuse any one musician over the other...creating internal musical cues which i'd never even heard before
- Seamless integration across the spectrum...no one area stands out. which means music again just passes through without emphasis of one area or another
- soundstage...lifelike. it is surprising when someone sings live in front of you how "big" they seem when you close your eyes. The Grand Slamm really does approximate this stunningly well even on choral masses, and certainly on good studio recordings of small ensembles, trios, etc
- neutrality...by this i mean sound passing through as it seems to have been recorded (not that i would know but it certainly feels that way based on comparison to live instruments i do know from either having played them for 12 years, etc.)...again, sound is just passing thru

Set up
- Smokes!!!!!!!!!! This is by far, by far, by FAR the most critical thing about these!
- And we are not just talking about scientic "art is science" placement.
- The distributor's top man came with the GM of the Dealership and spent nearly 8 hours in my home
- They even soldered in different resistors (twice!) for the tweeter in order to emphasize/de-emphasize the treble to accommodate the treble dispersion capability of my room. it is that sensitive to set-up.
- But once they finished measuring angles, taking into consideration side wall reflections, the shape of my living room, etc, and then tweaking the resistors...wow. it went from great, to big to impressive...to Smokes!!!!!!!!!!

Conclusion
If you look at the incomplete list of speakers i have had the fortunate opportunity to get know to a greater or lesser extent over 25 years, some are old and some are new. All are very, very good.

To me, the Wilson X-1,Grand Slamm is the reference to my ears.

Finally, i come back to the main point of this Review. In support of what many of us are here for (second hand), i firmly reinforce the notion that much older products can still be references in today's world when done well. In truth, one has to acknowledge that manufacturers are running a business...and they need to get consumers to buy new products, upgrade, etc...and they must therefore market the "newer is better" motto.

In many cases, this is absolutely true...but i think many of us have seen the benefit of the fact that depreciation sometimes is greater than the degradation of quality!!! A product that has depreciated in half is certainly not half as good as a new speaker...and in my own personal experience in this case, this much older speaker is still the greatest speaker i have had the blessing to hear and now own.

Happy Holidays Everyone!!!

Associated gear
Oppo 83 Blu-Ray, Upgrade Audio Modded
Zanden DAC
CJ ACT 2
Gryphon Antileon
Transparent Ref IC/SC
PAD Dominus/Ann Contego PC
Transp Ref Conditioner

Similar products
Wilson Alexandria
Rockport Merak/Sheritan
YG Acoustics Anat Prof
Hansen Prince
Martin Logan CLX
Sonus Faber Stradivari
Thiel 7
B&W 800/801/802
Wilson Maxx II, Watt 6,7,8, Sasha
lloydelee21
One year to the day since I posted here congradulating you on your new speakers and now your writing a very positive review of your time with the Grand Slamm speakers!!! I think one needs to live with speakers to learn what they can do, I know with my WP 8 the more I listen the more I learn what is possible from them, I think they have the same characteristics on a smaller scale as your Wilsons and respond well to gear and room upgrades. I dream of a dedicated room but at this point no can do! Happy Holidays!
Hi Samhar,

Wow! You're right...i did not even realize this until you mentioned it! Happy holidays to you and yours! Enjoy your fantastic system...which i enjoy watching and reading about!
Hi All,

Just a quick update...I have since worked with my local distributor/dealers on the X1s. Amazing improvements on such an older speaker...far more electrostatic-like articulation...far greater EASE and effortlessness of presentation, along with much greater detail being picked up (to be fair, also due to isolation and grounding of the electronics as well). Here are the changes to the speakers:

- Stillpoints Ultra 5s underneath
- Entreq Vibb Eaters (25 lbs of strategically placed mass damping on top of the upper modules in front and back)
- Tweeters broke, so have latest gen Focal Titanium tweeter replacement with the 'Wilson damped chamber' inside that came with the Alexandria Series 2 and Maxx 3 tweeters

I am now thinking of a custom mass damping solution largely based on the Entreq Vibb Eaters on top for the X1s. The improvements they have wrought are that good.

The most impressive changes from damping against vibration (from underneath and on top) are really, really eliminating a small blur, haze and unsure imaging from what appears to have been not an entirely inert cabinetry...notes do not 'pull to the speakers' as much which means they disappear better along with more sure-footed, solid soundstage...plus of course micro, micro details have come out now that I do not hear in other SOTA systems at local dealers (not entirely fair...they're constantly moving equipment around for auditions but these systems are nevertheless superb equipment: Naim Statement, Metronome Kalista Ref, Focal Grande EM-type superb...

Feel very fortunate indeed...and for all those who 'tweak' because it is more affordable (and fun)...I say if you've got fundamentally good equipment...carefully done work can really, really improve what you might already have!!
Hey sounds like some big changes ! Those are great speakers...assuming the tweeters helped a bit to ...better resolution but a more natural portrayal? Just a guess...
Hey Jfrech,

Thanks! Yes, you got it...more natural treble. I know the Wilson has its limitations in treble and is not standard setting...but set up well, it is excellent. And I admit it has been absolutely fascinating to take components I really like...and isolate each one mechanically and also in terms of grounding. The chance to do a custom job for the X1s now is good fun.

Gotta find a pair of 2nd hand Opus SCs!!