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Old 20th August 2009, 03:31 PM   #1
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Question 3" Driver in a Transmission Line.

As some of you will know, I've been using some Visaton FRS8s in open baffle speakers, using one in the baffle and one to cancel the rear wave.

I was curious about making a (fairly) small TL for them to see how they perform. Some say TLs shouldn't be tuned below driver Fs. If this is true for all projects, this will be a waste of time (Fs around 120Hz for this driver).

I am doing this to learn, as many like the sound of horn/TL speakers, and I wanted to know what made it so brilliant.

Link to the driver - http://www.visaton.com/en/chassis_zu...nd/frs8_8.html Parameters are also there. In winISD, they don't model hugely well (tried vented, sealed boxes), so I wondered what would happen in a more elaborate cabinet design.

Thanks in advance for any tips (even if it is simply to say "this won't work")

Chris
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Old 20th August 2009, 10:44 PM   #2
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Chris, as I suggested to Kipman, personally, for something this small, I'd use an FRS8M as a full range (bit more efficient than the FRS8) & the WS130 for the low end (< 200Hz). You will only be able to get an EBS alignment happening for the FRS8, and to use eq to get reasonable bass level will push such a small driver beyond its capabilities. You'll get much less distortion going 2 way (& these drivers are pretty cheap...)
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Old 20th August 2009, 11:32 PM   #3
Zigis is offline Zigis  Latvia
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Cyburgs-Needle is TL using frs8, very good bass for this small driver

Cyburgs-Needle for Tangband W3-871S

any links to your OB?
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Old 21st August 2009, 09:43 AM   #4
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Yeah, got some links

design +messing around new idea? to eliminate need for BSC

my almost done design (starts around 1/2 way down) Ultimate OB Gallery

Nice link there - I was searching through the full range forums for something like that and got nothing...

I have 4 with me, and can get a lot more if needbe (they're £8 each here, but bulk buys are a lot cheaper).

Chris
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