The SBLs have landed

Posted by: Matt Gear on 27 November 2003

All

After humming and hah-ing about upgrading my speakers (Castle Avons) for rather a long time, I have finally taken the plunge when a very reasonaly prices pair of 2nd hand SBLs became avaiable.

I've been running the Castles for over 6 years now initially with a (whisper it) Pioneer system, and then with the Naim kit which I'm currently using (CDi/02/82/Hi/180). All the upgrades they I made in the front end were suitably reflected through the speakers, but I was becoming tired of the slightly boomy bass, shrill treble at high volume, and generally "cuddly" presentation they had.

The first time I heard SBLs about 8 years ago, I really wasn't all that impressed, but I've become very familiar with them since then (my father has a pair), and have grown to love them. In the context of my all Naim electronics they seem like the obvious choice, and at 2nd hand prices, the bargain of the century.

I picked the speakers up on Tuesday evening, a very rainy evening and not much fun to drive. Thanks Steve for the help in packing them up, and sorry to have taken them away from you! Wink By the time I got back home though, it was too late and I was too tired to even think about setting them up.

So I was, sat at work all day yesterday, itching to get home to get my new babies set up.

It was a lot easier than I thought. I'd read much on the forum about gaskets, and silicon gel, and was expecting quite battle, but the gaskets had only recently been re-sealed, and had stayed intact during transit, so all i needed to do was bolt on the treble unit, and pop them into place.

First impressions were gob-smacking. As I said, I've heard SBLs before, but wasn't really prepared for the improvement that they brought to my system. Gone was the shrill treble, the smoothing off of the notes, and the thump-thump bass. It was as if I'd been listening behind a curtain before, which had now been drawn back, giving me a clear audio view of the performers.

Listening to choral music, it was possible to follow the individual parts much more easily, whilst still retaining a feel for the whole piece. You could hear the subtle inflections of the voices, and also get a much greater sense of space around the performers.

Switching to more modern music I could really start to understand what people mean by PRaT. Drums started and stopped far quicker, and acoustic guitars had a wonderful zingy punch to them which I'd not heard before on my system.

And as for the bass: well, absolutely no complaints there. SBLs have been criticised for being bass light, but I spun "Cochise" from the Audioslave album and it ROCKED! I kept wanted to turn it up louder, as there was no sense of strain at all.

The rest of the evening was spent ploughing through my CD collection, and discovering nuances and phrases that had previously only been hinted at.

Suffice it to say I'm a very happy chappy. In the context of my system I would confidently say that it's the biggest upgrade I've made, and probably the most cost effective too.

The good point too, as made by the chap I bought them off, is that they will continue to get better as I upgrade the front end, though for the moment I'm more than happy with what I have, and will be investing future funds in expanding the CD collection, which after all, is what it's all about!

Cheers


Matt
Posted on: 28 November 2003 by Matt Gear
Thanks Gary

Will report back once I've got them set-up properly.

Cheers


Matt
Posted on: 28 November 2003 by silklee
Guys,
With regards to the resealing, how do we go about replacing the aluminium pads. From what i understand, it would require a stapler gun to secure the aluminium pads in place.

And after removing the original aluminium pads, would we also need to use wood fillings to fill up the holes where the original staples was at?

Or we dont have to replace the aluminium pads at all?
Posted on: 28 November 2003 by Noel
Silklee,

The aluminium pads should be indented, but not punctured. If you're through to the wood you need new pads. Take the old ones off, fill the holes with plastic wood making sure the surface is level. When that has hardened staple the new pads in place.

Noel. Smile
Posted on: 28 November 2003 by Thomas K
"Spikes should pierce the pads and just make contact with the wood beneath."

I think the point is just to keep it the woofer box stable and leave room for the silicone. If the holes in the pads have become too wide and the woofer box rocks, you should replace them.

If you only indent the pads they may end up sliding around on the spikes.

Thomas
Posted on: 28 November 2003 by Rico
quote:
Talking of sealant, what to use when the original suff has been used up?

When you buy a full rebuild kit from your friendly Naim dealer it comes with gaskets, aluminum pads, and the correct sealant for the job.

Thomas - so you've quit active 140's and gone 250-2 & XPS-2? Congrats! That oughta sort out the Annie DiFranco's from the Aimee Manns. Cool

Rico - SM/Mullet Audio
Posted on: 28 November 2003 by garyi
Rico, naim used to supply a little tube of gloop, in recent times the gloop has changed.

One thing is for certain, its clear silicon sealent and nothing else.

Don't believe the hype.
Posted on: 28 November 2003 by andy c
Re the pads issue above I spoke to my dealer & Naim about this - they both suggested that so long as the bass unit is kept apart from the gasket by the silicone seal there is no need to replace the pads. If the bass unit actually touches the gasket thats when the pads are useless and need replacing...
Posted on: 28 November 2003 by garyi
Regarding the staples, you do get some supplied with the kit and they are reasonably robust. If you have a tack hammer its possible to hammer them home, just be patient and carefull.
Posted on: 29 November 2003 by Thomas K
Thomas - so you've quit active 140's and gone 250-2 & XPS-2?

Indeed, and it's sounding damn fine. I loved active and if I win the lottery I will go active again, but the 250-2 is much better than the 140s (maybe 140/SBL just wasn't powerful enough in my sparsely furnished flat). I'm even getting more detail now, and the only thing I lost out on is a bit of separation, but who needs that anyway?

Thomas
Posted on: 29 November 2003 by Rico
Garyi

IIRC it's the curing of the silicon that counts - the brand may have changed, the silicon feature/curing type likely hasn't.

cheers!

Rico - SM/Mullet Audio
Posted on: 29 November 2003 by blythe
quote:
Originally posted by greeny:
[QUOTE]Sorry blythe I seem to have posted the same advice at the same time!!

Great minds think alike!

Computers are supposed to work on 1's and 0's - in other words "Yes" or "No" - why does mine frequently say "Maybe"?......
Posted on: 29 November 2003 by Martin Payne
quote:
Originally posted by garyi:
Regarding the staples, you do get some supplied with the kit and they are reasonably robust. If you have a tack hammer its possible to hammer them home, just be patient and carefull.



I didn't bother with the staples when I re-did my DBLs.

The sticky backing seems to hold them in place very well.

However, I believe that the filling of any spike indentations is crucial to getting the full performance from any speaker, Naim ones included.

cheers, Martin

E-mail:- MartinPayne (at) Dial.Pipex.com. Put "Naim" in the title.