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Old 24th May 2005, 07:20 PM   #1
jemraid is offline jemraid  United Kingdom
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Default Gc + Frs 8

I am going to build a pair of Cyburg's Needles with the Visaton FRS 8 drivers.

There are two versions of the driver one 4 Ohm and one 8 Ohm, the 4 Ohm one has got a higher QTS making it more suitable for the Needle.

I'm sure I have read that an inverted LM3875 GC is suitable for a 4 Ohm load but would like to check.

Would be grateful for any help.

Regards - Jem
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Old 24th May 2005, 08:40 PM   #2
G4ME is offline G4ME  United States
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just as long as you don't exceed the current output limit. Which means a transformer of around 18-20V
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Old 24th May 2005, 09:01 PM   #3
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An LM3886 would be better.
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Old 24th May 2005, 09:09 PM   #4
G4ME is offline G4ME  United States
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as it allows higher current output
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Old 24th May 2005, 09:27 PM   #5
jemraid is offline jemraid  United Kingdom
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Dear Carlosfm and G4ME,

I think I'll buy the 8 Ohm version I don't want to blow me lovely amp up.

Thanks for the advice

Jem
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Old 24th May 2005, 09:36 PM   #6
G4ME is offline G4ME  United States
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you will be fine with the 3886, its rated for 4 ohms even with a tranny of 25V. Heck you could still use the 3875 with 25v tranny, i just wouldn't crank it to 11.
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