Hello everybody, I am a musician in an orchestra without the nessesary understanding of crossover build!
I love to build fullrange enclosures but now I capitulate with my next project.
A friend of mine sold me his Altec 806A/Isophon Orchester combi. Sounds very good!
http://my.funpic.de/show-photo/730429-PIC.jpg
Now I am interested in a pair of Altec 3156 for a original cabinet made for this driver. The 8156X...
Here I already have made from some other cabinets from a AN12 project.
http://my.funpic.de/show-photo/730430-PIC.jpg
I am interested in the sound from these two Altec drivers playing together!
Now my question: When I combine these two, what crossover do I put in front of the 3156? And : can I just remove the 806A driver crossover and put it in the box of the 3156 next to the 3156 crossover tangeled like in my combo Altec/Isophon?
I have the specs of each driver! If somebody needs details...
Greets from germany, chris
I love to build fullrange enclosures but now I capitulate with my next project.
A friend of mine sold me his Altec 806A/Isophon Orchester combi. Sounds very good!
http://my.funpic.de/show-photo/730429-PIC.jpg
Now I am interested in a pair of Altec 3156 for a original cabinet made for this driver. The 8156X...
Here I already have made from some other cabinets from a AN12 project.
http://my.funpic.de/show-photo/730430-PIC.jpg
I am interested in the sound from these two Altec drivers playing together!
Now my question: When I combine these two, what crossover do I put in front of the 3156? And : can I just remove the 806A driver crossover and put it in the box of the 3156 next to the 3156 crossover tangeled like in my combo Altec/Isophon?
I have the specs of each driver! If somebody needs details...
Greets from germany, chris
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Last edited:
Each driver has different impedance/frequency characteristics, so for best results a crossover which matches these needs to be used. Post the specs & let's see how different the drivers are...
(Do you have a schematic of the crossover you're using?)
(Do you have a schematic of the crossover you're using?)
Hi, thanks for your time!
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
I just whipped over these fotos before bringing the kids to school...
My first concern would be not wanting to smash the 806a driver putting in something I measured on the internet...
Is it desired to put a 24dB/octave in front of the 806a just to make sure that 500Hz is lowist to go?
My first concern would be not wanting to smash the 806a driver putting in something I measured on the internet...
Is it desired to put a 24dB/octave in front of the 806a just to make sure that 500Hz is lowist to go?
If your crossover is the N-800D, you should have no problem just connecting up the 3156 to see how it sounds, it may not be the ideal crossover (just a textbook 2nd order by the look of it), but you should be able to adjust the level of the 806 to match.
N-800 schematic:
http://alteclansingunofficial.nlenet.net/publications/techletters/TL_121.pdf
3156 Datasheet:
http://www.greatplainsaudio.com/vintage_altec/3156_lfldspkr_spec_sheet.pdf
re:Is it desired to put a 24dB/octave in front of the 806a just to make sure that 500Hz is lowist to go? " - yes, definitely
N-800 schematic:
http://alteclansingunofficial.nlenet.net/publications/techletters/TL_121.pdf
3156 Datasheet:
http://www.greatplainsaudio.com/vintage_altec/3156_lfldspkr_spec_sheet.pdf
re:Is it desired to put a 24dB/octave in front of the 806a just to make sure that 500Hz is lowist to go? " - yes, definitely
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