Sonics of Soundlabs


Hello all,

I am contemplating the purchase of a pair of Soundlab M3's, and wonder if some of you guy's (and gals) could help me out a little. They have the newer upgraded transfomers etc. but were manufactured in the late 90's. I am currently using an ARC VT-200 into Martin Logan Prodigy's and love the sound but have always heard great things about the big Soundlabs stats.

For curiousity sake I auditioned a pair of Maggie 3.6's a few weeks ago and they didn't do it for me; there was no bottom end and the dynamics just were not there.......... I thought they did some things well but much preferred the Prodigy's in the end.

I would be buying these speakers used and will not be able to audition fully before purchase. Can anyone tell me how thier sonics compare to my two other "panel" references (the Maggie's and ML's)? Are there any issues (aside from the size) that I should consider when buying a pair of these speakers used? How do the M-3's stack up to the A1's and M1's? Do they match well with the rest of my system..... If I had to find a more powerful amp for instance it would probably be a deal breaker.

Thanks all in advance.

Chris
cmo

Showing 2 responses by audiokinesis

Hi Cmo,

Any size Sound Labs will work well in your room. That won't be a problem.

With the VT200 amplifier, I would strongly suggest you have the backplates upgraded with the "high impedance upgrade". This will make them an easier load. The VT200 probably isn't the ideal match for the Sound Labs; depends on how loud you want to crank it.

I have a customer with an early pair of M-3's and he's very happy driving them with a 140 watt OTL tube amp. I have another customer with current generation M-3's (which are higher in efficiency and have better dynamic contrast due to new panel technology) and he finds a 60 watt OTL amplifier to work well.

I have owned Maggie 3.6's as well as all different size Sound Labs, and yes the M-3's will give you more low end extension than the Maggies. In my experience, degree of dynamic contrast is to a large extent amplifier dependent. As mentioned, the latest "high efficiency" panels give better dyanmic contrast than their predecessors. The strengths of the Sound Labs tend to be in other areas, so don't expect to rival Altec A7's or Klipschorns in dyanmics. The Sound Labs excel in naturalness of timbre, low-level detail, and freedom from coloration resulting in absence of listening fatigue even over all-day listening sessions.

The larger model Sound Labs do offer improvements over the M-3 in bass extension, efficiency, and overall richness of the presentation (the latter due to their wider radiation patterns). On the other hand, the narrower M-3 can often give you a bit wider soundstage in a given room because you can place the panels farther apart center-to-center. The M-3 is only about 67 inches tall, so unless you tip them back a bit (with a shim under the front foot) when you stand up you'll probably lose the high frequencies.

The Maggie 3.6 is more efficient than the older generation M-3's you're looking at. But when I had the 3.6's side-by-side with fullrange SoundLabs I kept wanting to turn up the volume on the Maggies to hear the low-level detail that was readily apparent on the Sound Labs. So if you have a low noise floor in your listening room, Sound Labs can give you a great deal of dynamic contrast because you'll be able to hear the low-level sounds that are often lost in a lower resolution system.

Feel free to e-mail me if you have any questions.

Duke
Hi Cmo,

Something definitely was not right with that single speaker setup you heard. Hard to say from here, but it could have been a problem elsewhere in the signal path, or it could have been improperly set bias. I remember once for some reason I had the bias set way, way too low, and on loud passages there was a horrible "crunch" that terrified me until I figured it out. Maybe what you heard was amplifier clipping as you suspected - note that a second speaker + amp would add 6 dB more headroom, so if he was trying to replicate two-speaker SPL's with a single speaker then he'd be asking the amp to deliver four times as much power output as normal.