 Rank: Administrator Joined: 15/07/2008(UTC)
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setting up Gradient Helsinki 1.5
having much fun messing around with this intriguing loudspeaker, could not be more different form the common herd.
The mid and treble is fairly consistent but you can iterate listener and speaker position almost all over the room and get different but still plausible results.
It may well be a problem solver as it does not excite room bass modes much and there is little leakage to adjacent rooms or properties.
Still getting my head around the appearance!
Martin Colloms
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 Rank: HIFI Veteran Joined: 02/02/2009(UTC)
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I am looking forward to your views on this speaker. In relation to other OB speakers I am seeing it looks a little "under-woofered". I understand that you end up using a far more efficient bass driver in relation to the other drivers than normal but I have usually seen a couple of bass drivers or some eq in the crossover. I think OBs are such an obvious answer to the question of making a cabinet inert- again understand you still need the baffle to do its job. To be hopelessly unoriginal could I suggest sand filling the baffle 
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Rank: Administrator Joined: 15/07/2008(UTC)
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put in the wrong place and surprise surprise ,
too much bass !!!!!!!!!!!!!!!!!
Martin Colloms
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Rank: Administrator Joined: 15/07/2008(UTC)
Posts: 1,841
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regarding the Helsinki baffle it is a massive affair , multiply and plate glass and seems to be nicely inert.
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Rank: Administrator Joined: 19/09/2008(UTC) Posts: 1,667 ![United Kingdom]( "United Kingdom") Location: UK Thanks: 8 times
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Originally Posted by: Martin Colloms  put in the wrong place and surprise surprise ,
too much bass !!!!!!!!!!!!!!!!!
Martin Colloms ...but how exended?
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Rank: Administrator Joined: 15/07/2008(UTC)
Posts: 1,841
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not ! good to 40 , maybe 35 in some rooms but not enveloping the bass is natural ie to hear 40 Hz it needs to be loud enough to be greater than the threshold of perception not like pressure bass which waffles around building levels even when fairly quiet The Helsinki will be a boon to flat dwellers, much less floor reaction impact and much less bass pressure leakage. Martin Colloms Edited by user 25 August 2012 16:35:42(UTC)
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Rank: Administrator Joined: 15/07/2008(UTC)
Posts: 1,841
Was thanked: 8 time(s) in 8 post(s)
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The Helsinki 1.5 passed muster vol 6 no 3
not a value thing , but it just works , very easy to live with with good timing
for modern apartments there is not much else that controls room effects so well and looks the part.
Martin Colloms
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