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Martin 115 problem
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Joey carlo View Drop Down
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Points: 36 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Joey carlo Quote  Post ReplyReply Direct Link To This Post Posted: 22 October 2018 at 7:12pm
At least I know they are probably orignals , as have a cap in them!

Is it worth having cap?

Or is it just something that might fail?

Thanks


Edited by Joey carlo - 22 October 2018 at 7:29pm
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jbl_man View Drop Down
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Points: 11155 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jbl_man Quote  Post ReplyReply Direct Link To This Post Posted: 22 October 2018 at 7:31pm
They are originally fitted as amps from the 70's, when these were made ,had no DC protection,so would fry the drivers if the amp failed. Modern amps are much better protected. Take the caps out if you are using a good modern amp.
Be seeing you.
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Joey carlo View Drop Down
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Points: 36 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Joey carlo Quote  Post ReplyReply Direct Link To This Post Posted: 22 October 2018 at 7:48pm
Yeh that's my thoughts , yeh it's a decent amp so will take them out!

Thanks




Edited by Joey carlo - 22 October 2018 at 8:00pm
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Earplug View Drop Down
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Points: 7216 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2018 at 12:39pm
The 115 should be protected with a decent HPF. Original specs say 40Hz, so don´t try get 25Hz out of them!   Smile
Earplugs Are For Wimps!
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Joey carlo View Drop Down
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Points: 36 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Joey carlo Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2018 at 6:39pm
Thanks!

Yeh I know they won't go much below 50hz tbh , hence my other thread!

But my god I love how the sound! One of my favourites!
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Points: 1538 		Post Options Post Options   Thanks (0) Thanks(0)   Quote madboffin Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2018 at 12:26am
Definitely remove the capacitors, they are not needed with modern equipment.

As has been mentioned they will cause some rolloff, and phase shift which will have an adverse effect if you ever combine the 115's with additional subs.

They were nonpolarised electrolytics (3600 mF if I remember) specially made by LCR and will now be well over 30 years old, so most likely deteriorating anyway due to old age.

They were an acceptable compromise when the alternative was a DC300 or S500D going DC...
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Joey carlo View Drop Down
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Points: 36 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Joey carlo Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2018 at 1:00am
Yeh removed them now!

Thanks 
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