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Old 4th September 2012, 05:44 PM   #1
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Default BSS FDS 340 crossover

Does anyone have a card component value vs. frequency chart to change crossover points on these units.
Net search reveals nothing and no replies from manufacturer either.
Any info would be most appreciated.
TIA
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Old 4th September 2012, 08:24 PM   #2
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If they are the same as the ones for the FDS360 they are on the BSS site.

http://www.bssaudio.com/product_down...filterdata.pdf
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Old 4th September 2012, 08:31 PM   #3
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I did come across the model 360 link as well. I`m considering the purchase of a 340 and dont have one on hand to compare against a 360.

Harmon sent me a few PDF`s but unfortunately none contained the chart I was looking for and they couldnt locate one either.

Damn fine crossover in my opinion, would love to get one in the system
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Old 4th September 2012, 09:04 PM   #4
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I really do suspect that the filter plug ins are the same for 360s and 340s but only having a couple of 360s I can't guarantee that.

Btw I got noticeable improvement from replacing the standard opamps (TLO72) with Burr-Browns OPA2134.
There are even better ones but 2134 are a drop in replacement and I got mine very cheap as they were left over non RoHS compliant ones.
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Old 4th September 2012, 10:47 PM   #5
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Thanks for the heads-up on the op amp swap, sounds worthwhile.
Back in my touring days in the Eighties, 340s ruled the pro sound reinforcement world, where did they all go?
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Old 5th September 2012, 09:53 AM   #6
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Over here it was 360s or Klark Tekniks.

Still think 340s are a slightly simplified version of the 360 (I think 340s are lacking the continuous phase adjustment for example) and the plug in cards are the same.
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