Hi guys,
need some help with 12 drivers please.
Some background:
I have a pair of JBL L112 from many years. When i obtained them they were not with the original 12" 128H drivers, but some other 22xx something and as they were rotten i send them to the garbage bin. It happened that at same time i had some new like vintage 12", no name, so i just dropped them in. They play surprisingly well, even feeded by 150W 8Ohm amp full power, not that i do that very often nowadays .
Meanwhile some other nice speakers passed here but at the end the JBL 112 stayed, i guess i find them perfect for me, sound, size, WAF
Now they are carefully placed in room and sound very nice.
So why to change the 12" then?
Mainly because i would like some more bass, which i am sure i am missing with these.
Then the 128H are not new, expensive to ship to Europe, very hard to find and who knows how they are reconed or repaired.
Apart from that i would like to learn DIy speaker design, at least a bit, cause i looked last 2 weeks at DIY speakers and honestly couldn't choose one to build. Due to high price of speakers >1000euro, or low power, or this or that.. Incredible. i looked at least at 200 designs. The speaker i would like to build would be like the Statements but 2x10" instead of 2x 8" or even better 1x or 2x 12" bass in a transmission line cabinet. This SUMMONER 1293SRTL is one i like, but they are in Australia, i am in Europe... If there was a kit combining the Statements with the Summoner ...
In other words i realise i am absolutely ignorant and will need a lot of time and first completing some projects before i make my dream speaker.
So its obvious i could at least play with what i have. plus just finished my 8x4 cnc so i am eager to "better" things around me.
The idea though is to start from things i love, i know and have idea what i want.
So my plan is some step by step side projects for fun, while learning, reading, learning to measure, etc:
-find suitable 12" driver for the JBL
-make a clone of the L112 and now that i have figured the bass driver, see how the other could be exchanged with better modern ones
-make a clone of the L150, which is essentially L112 in higher enclosure +
-make some other speakers, for example Statements, Sb240 or Vota 4.
So my speaker making journey started trying to find a suitable 12" driver, mean while learning what all these words and numbers mean.
Anyway, after countless hours of browsing i have narrowed to 2 drives, having in mind Fs ~20-22hz of the original 128H, coil size and travel, at least what i understand as a total noob.
- Monacor SPH-300KE , ~150 euro this one looks to me almost same same as the original, apart paper from kevlar, which does not bother me /now/
-DAYTON REFERENCE HF SUBWOOFER - 8 OHM - 12", more RMS, a bit less sensitive, ~200euro
I am attaching some documents for the enclosure, crossovers, etc.
Any help will be highly appreciated. And yes, i don't want to buy the original 128h and forget,i want to learn sth new and experiment
Meanwhile if sb has some idea on better tweeters and mids for the clone, without going too far from the original concept and sound signature of that speaker. For the future clone i mean.
need some help with 12 drivers please.
Some background:
I have a pair of JBL L112 from many years. When i obtained them they were not with the original 12" 128H drivers, but some other 22xx something and as they were rotten i send them to the garbage bin. It happened that at same time i had some new like vintage 12", no name, so i just dropped them in. They play surprisingly well, even feeded by 150W 8Ohm amp full power, not that i do that very often nowadays .
Meanwhile some other nice speakers passed here but at the end the JBL 112 stayed, i guess i find them perfect for me, sound, size, WAF
Now they are carefully placed in room and sound very nice.
So why to change the 12" then?
Mainly because i would like some more bass, which i am sure i am missing with these.
Then the 128H are not new, expensive to ship to Europe, very hard to find and who knows how they are reconed or repaired.
Apart from that i would like to learn DIy speaker design, at least a bit, cause i looked last 2 weeks at DIY speakers and honestly couldn't choose one to build. Due to high price of speakers >1000euro, or low power, or this or that.. Incredible. i looked at least at 200 designs. The speaker i would like to build would be like the Statements but 2x10" instead of 2x 8" or even better 1x or 2x 12" bass in a transmission line cabinet. This SUMMONER 1293SRTL is one i like, but they are in Australia, i am in Europe... If there was a kit combining the Statements with the Summoner ...
In other words i realise i am absolutely ignorant and will need a lot of time and first completing some projects before i make my dream speaker.
So its obvious i could at least play with what i have. plus just finished my 8x4 cnc so i am eager to "better" things around me.
The idea though is to start from things i love, i know and have idea what i want.
So my plan is some step by step side projects for fun, while learning, reading, learning to measure, etc:
-find suitable 12" driver for the JBL
-make a clone of the L112 and now that i have figured the bass driver, see how the other could be exchanged with better modern ones
-make a clone of the L150, which is essentially L112 in higher enclosure +
-make some other speakers, for example Statements, Sb240 or Vota 4.
So my speaker making journey started trying to find a suitable 12" driver, mean while learning what all these words and numbers mean.
Anyway, after countless hours of browsing i have narrowed to 2 drives, having in mind Fs ~20-22hz of the original 128H, coil size and travel, at least what i understand as a total noob.
- Monacor SPH-300KE , ~150 euro this one looks to me almost same same as the original, apart paper from kevlar, which does not bother me /now/
-DAYTON REFERENCE HF SUBWOOFER - 8 OHM - 12", more RMS, a bit less sensitive, ~200euro
I am attaching some documents for the enclosure, crossovers, etc.
Any help will be highly appreciated. And yes, i don't want to buy the original 128h and forget,i want to learn sth new and experiment
Meanwhile if sb has some idea on better tweeters and mids for the clone, without going too far from the original concept and sound signature of that speaker. For the future clone i mean.