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concept-10 View Drop Down
Young Croc
Young Croc


Joined: 17 May 2016
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Post Options Post Options   Thanks (0) Thanks(0)   Quote concept-10 Quote  Post ReplyReply Direct Link To This Post Topic: drivers
    Posted: 13 August 2019 at 12:19pm
What is the best modern drivers for the martin 215mk3, cheers.

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snowflake View Drop Down
Old Croc
Old Croc


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Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 13 August 2019 at 1:11pm
search for previous threads like this one:


if you are building new ones route a deeper groove on the baffle for the suspension to move into - without this modern drivers are wasted.
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Peter Jan View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter Jan Quote  Post ReplyReply Direct Link To This Post Posted: 13 August 2019 at 6:46pm
In these design it's no use to put in expensive, heavy speakers (therefor inefficient), because they can't get rid of heat fast enough to survive like 1kW for longer than half an hour or so. Nothing will happen in a 10-15 minute test, but things will go wrong fast when used in anger during a real gig.
And another thing with front loaded horns... there's always a point where you stop making more SPL and only add distortion, when you keep on adding power beyond that point.
The ticket is really found in the most efficient fifteen you can find with an Xmax of at least 6 mm
BL factor solid above 20
Qes/Qts preferably below 0.30
3" voicecoil ( 4" if you must )

PD153ER, PD154, PD158, Beyma 15P80Fe or Nd to name a few.
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snowflake View Drop Down
Old Croc
Old Croc


Joined: 29 December 2004
Location: Bristol
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Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 13 August 2019 at 9:34pm
Originally posted by Peter Jan Peter Jan wrote:

In these design it's no use to put in expensive, heavy speakers (therefor inefficient), because they can't get rid of heat fast enough to survive like 1kW for longer than half an hour or so. Nothing will happen in a 10-15 minute test, but things will go wrong fast when used in anger during a real gig.
And another thing with front loaded horns... there's always a point where you stop making more SPL and only add distortion, when you keep on adding power beyond that point.
The ticket is really found in the most efficient fifteen you can find with an Xmax of at least 6 mm
BL factor solid above 20
Qes/Qts preferably below 0.30
3" voicecoil ( 4" if you must )

PD153ER, PD154, PD158, Beyma 15P80Fe or Nd to name a few.


very good point!
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Digbethdave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Digbethdave Quote  Post ReplyReply Direct Link To This Post Posted: 19 August 2019 at 5:09pm
Kappa Pro works
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