Gordon Ewen

SB Acoustics 16 MTM speakers - Troels Gravesen design

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Super Wammer

I recently completed this pair of SB Acoustics 16 MTM speakers, from the kit available from Jantzen Audio in Denmark. The cabinets are made from 22 mm MDF, veneered with Birds Eye Maple, lacquered and polished. The footprint is 22 cm x 27 cm which is about the same a a stand mounted pai would be. They sound superb, deep tight bass, mid is very transparent and the tweeter is about as good as it gets - just my opinion, of course. HEre is a link to the Troels Gravesen web page:

http://www.troelsgravesen.dk/SBA-16-MTM.htm

I have measured the frequency response using REW and got the same result as Mr Gravesen so they work as expected. I have pictures of the build if prospective buyers are interested. I am happy to audition them, I live near Bedford.

Price is £1850 and pick up only.

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I’d love to hear these I bet they sound fantastic. SB midbass’ are amongst the best I’ve heard, so effortless. 

Is this something you do do all the time? Be nice to see any of your other work :)

Finish looks incredible!

Carl.

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Super Wammer

Good morning Carl, I've made a few speakers with SBA drivers and they are excellent. Over the last 2 years I've made 11 speaker pairs from Wilmslow Audio, IPL and those designed by Troels Gravesen. IMO the TG designs are way ahead of the others mainly due to the quality of the crossover components. Indeed, some of the TG designs have crossovers that cost more than the drivers. It makes a big difference. I have swapped out capacitors from WA kits for better ones and heard a huge difference to the detail and soundstage.

Here is a link to my Flickr site where you can see the others I have done. The Discovery 18's will be for sale imminently - all so I can buy another kit! Just finished the TG passive Fusion - running in at the moment. Getting a good finish is the hard part, and I'm still learning. The high gloss black is very time consuming and it would be easier with professional facilities and tools, but I'm pleased with what I can do a t home. Veneering is very satisfying but much care is needed as the typical 0.6 mm veneers are very easy to split or chip during application. I used contact adhesive on the Fusion pair and that's what I'd always use in future.

https://www.flickr.com/photos/74614447@N02/albums

Let me know if you would like to hear them. I'm retired and around most of the time.

Regards

GOrdon

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Hi Gordon,

Very nice work (& the starshed), I've had a couple of pairs of Toels over the years and been very impressed. I think you need to be retired to read all the volumes of work he has published. Are you building up to an ultimate pair of speakers ? or is it just the joy of being able to experiment.

Best wishes,

 Julian

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Super Wammer

Hello Julian, I have finished building for myself. I made the Illuminator 4 by TG 12 months ago and they are fantastic. Having listened to Wilson Audio Yvette's I can say the Illuminator 4's are definitely better. In a private communication with TG it was his opinion that the best comparison is with the Alexia's (very expensive.....). The WA speakers are beautifully built though.

The problem is that this speaker building gets addictive, and expensive! Hence, I need to sell some as I have 4 pairs at the moment. I'll be keeping the Illuminator 4 and Fusion.

Gordon

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Hi Gordon,

I have been tempted many times to give his designs a go but have always been scared of building some and not liking them and loosing money on them.

The Fusion looks great, he also seems to really rate the Ekta MK2 - his favourite 3 way floorstander. As does his new Satori 3 way classic.

Cheers,

Cosmo

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Gordon, those speakers are well made,  veneer work is nice. I just finished building a pair of TG Ekta Mk II cabinets a few months ago but need to get around to finishing up the write up on them for WigWam. Initial photos are already on the TG website under Builders Responses.

 What level of kit did you buy from Jantzen Audio?

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Super Wammer

Hello Cosmo, don't be put off building a pair! You would end up with a speaker of way better quality than a similarly priced commercial speaker. I did my fist build 25 years ago and remember being apprehensive, but making the cabinets was relatively straightforward. Since then I have never considered buying from the speaker manufacturers. I've now made about 10 pairs. Believe me, you won't be disappointed. I have made 5 of TG's design and all were excellent. In terms of sound per £ I rate the Discovery 18 as outstanding value. It is also one of the cheapest kits to buy. The Illuminator 4's are superb but cost a lot more.

Go on, build a pair.

Regards

GOrdon

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Super Wammer

Hello Steve, I saw your pictures on the builders response page of TG website, look very good. I have always gone for the level 1 kit. Having heard what a difference capacitors with a tight tolerance make to the sound I wouldn't now use anything less. Clarity is better and soundstage really opens up.

Regards

Gordon

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I was the beneficiary of Steve H's first TG build - his Jantzen TQWT floorstanders. (Hi Steve!). Im very pleased with them since I discovered they needed wall/corner placement. They have the optional uprated crossovers.

They are going to be demonstrated at Lurch's 60th birthday Bake Off on Feb 3rd so we will see what a wider audience thinks of them. They are 94 db/watt so the SET monos Im also bringing will show them off a treat.

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On 07/01/2019 at 09:47, Gordon Ewen said:

Good morning Carl, I've made a few speakers with SBA drivers and they are excellent. Over the last 2 years I've made 11 speaker pairs from Wilmslow Audio, IPL and those designed by Troels Gravesen. IMO the TG designs are way ahead of the others mainly due to the quality of the crossover components. Indeed, some of the TG designs have crossovers that cost more than the drivers. It makes a big difference. I have swapped out capacitors from WA kits for better ones and heard a huge difference to the detail and soundstage.

Here is a link to my Flickr site where you can see the others I have done. The Discovery 18's will be for sale imminently - all so I can buy another kit! Just finished the TG passive Fusion - running in at the moment. Getting a good finish is the hard part, and I'm still learning. The high gloss black is very time consuming and it would be easier with professional facilities and tools, but I'm pleased with what I can do a t home. Veneering is very satisfying but much care is needed as the typical 0.6 mm veneers are very easy to split or chip during application. I used contact adhesive on the Fusion pair and that's what I'd always use in future.

https://www.flickr.com/photos/74614447@N02/albums

Let me know if you would like to hear them. I'm retired and around most of the time.

Regards

GOrdon

Hi Gordon, 

Thanks for your reply, apologies for not picking it up until now. Fantastic hobby you have, very jealous! 

I've looked through your flickr, I'm also a flickr user ( Mostly work stuff ). If you dig deep enough you'll find some of my refurbishment speaker projects. I'd love to hear all of these builds, I especially like the illuminator 4 build you've done, not to mention the space shed! Do you document your builds anywhere online? 

Thanks for sharing!

Carl.

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Super Wammer

Hello Carl, no, I don't document the speaker builds, the photos are the record of the build. The photos do a good job of telling the story I think. The Illuminator's are fabulous sounding. I have just added a Simaudio Moon Neomind 2 streamer to my system and the sound quality has taken a jump compared to the auralic Aries I was using. It would be interesting to hear some really high quality source material through them. One thing that has had a big impact on the sound is the MiniDsp Dirac room correction box DDRC 22D. In my opinion its the best upgrade step you can make. See this link:

https://www.minidsp.com/

The effect is quite amazing, bass is really well controlled and some slight booming I have in my lounge was dealt with, the soundstage really opens up and the correction filters can be adjusted to get the sound you like.

So, I'm now very happy with my setup and I doubt I'll be building anymore speakers soon, unless I can sell these MTM's. Time to  listen to some music after all this woodwork!

Regards

Gordon

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Super Wammer

Thanks Mark. IT's been an enjoyable two years building all the speakers, it's time to move on I think. After all, two pairs is enough to keep.

Gordon

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