Hi Guys
Just wondering if anyone has tried the Alpair 12pw on its own. I can see it is discribed as a Mid woofer but the treble seems to roll off fairly gently.
Also I have a pair of A6P which I found to be too lifted in the upper regions for my taste, can anyone compare these to the regular fullrange A12p in terms of smoothness and character.
Thanks Simon
Just wondering if anyone has tried the Alpair 12pw on its own. I can see it is discribed as a Mid woofer but the treble seems to roll off fairly gently.
Also I have a pair of A6P which I found to be too lifted in the upper regions for my taste, can anyone compare these to the regular fullrange A12p in terms of smoothness and character.
Thanks Simon
Bernie is building a pair of big Mar-Kens for sngle A12pw. We intend to try it FR as well as see if we can meld a tweeter to it.
dave
dave
Great, looking forward to hearing the result.
I can only hear up to 15khz ish, so it might work for me.
The A12pw certainly looks like it can put out quite a lot of bass.
Simon
I can only hear up to 15khz ish, so it might work for me.
The A12pw certainly looks like it can put out quite a lot of bass.
Simon
note, that's a pair of the 12PW per side, in a "not tiny" (i.e. just under 48" tall) wide baffle MLTL
yes, they produce a helluva lot more bass than a single A10P
yes, they produce a helluva lot more bass than a single A10P
Except for its efficiency, looks ideal for a SET or PP with variable DF tone controls if ~accurate, so could be quite entertaining spinning analog vinyl in a small room/near-field app or even a fairly large room with the latter.
Can high Vas even be built into MA's designs?
GM
Can high Vas even be built into MA's designs?
GM
Woah.. just found the MTM you built. Looks a beast! But unfortunately I will have to go with something a bit more modest.
Bass reflex of 45 litres looks like it can reach near to 30hz more than enough for me and my neighbours��
Bass reflex of 45 litres looks like it can reach near to 30hz more than enough for me and my neighbours��
Simon,
There are A12PW designs also:
http://www.diyaudio.com/forums/planet-10-hifi/260714-alpair-7p-alpair-12pw-combination-6.html
Maybe swap in a different driver for the Alpair 7P.
Dave might have other designs in the works (he usually has).
What amplifier are you using?
There are A12PW designs also:
http://www.diyaudio.com/forums/planet-10-hifi/260714-alpair-7p-alpair-12pw-combination-6.html
Maybe swap in a different driver for the Alpair 7P.
Dave might have other designs in the works (he usually has).
What amplifier are you using?
Last edited:
Before veneering with A7PeN:
Post veneering, with A7.3eN, posing with a set of Frugel-Horn Lite:
dave
An externally hosted image should be here but it was not working when we last tested it.
Post veneering, with A7.3eN, posing with a set of Frugel-Horn Lite:
dave
Some great designs there Dave.
Not quite sure how to do the angled cuts on the Mar Ken, but looking forward to seeing Bernies ones when finished.
Zman I will be using some humble class d amps( probably these Sanwu ones that are popular at the moment) and a cheap but quite good Chinese valve preamp.
Simon
Not quite sure how to do the angled cuts on the Mar Ken, but looking forward to seeing Bernies ones when finished.
Zman I will be using some humble class d amps( probably these Sanwu ones that are popular at the moment) and a cheap but quite good Chinese valve preamp.
Simon
Hello all. Regarding the implementing of an existing build- I'm using open baffle, with each baffle using a 12P with just an inductor and resistor paralleled to mellow the treble a little, and a 12PW separately amplified with a subwoofer plate amp.
I'm using a medium Q on the plate amp parametric equalizer to dip 14.5db below 35 hertz, to help protect them from my all in one system movie bass.
Sometimes I'll use my old preamplifier's rumble filter to protect both drivers for this. It starts at 100hz, and is down only 6db at 50 hertz I think.
I don't listen at loud average levels, and the 12PW cones don't move more than about an 1/8th of an inch, but I'm unfamiliar with the XMax 1 way. Is this meant the limit of the voice coil's movement while staying in the magnetic field, or can it be launched beyond it, possibly damaging the spider?
I'm using a medium Q on the plate amp parametric equalizer to dip 14.5db below 35 hertz, to help protect them from my all in one system movie bass.
Sometimes I'll use my old preamplifier's rumble filter to protect both drivers for this. It starts at 100hz, and is down only 6db at 50 hertz I think.
I don't listen at loud average levels, and the 12PW cones don't move more than about an 1/8th of an inch, but I'm unfamiliar with the XMax 1 way. Is this meant the limit of the voice coil's movement while staying in the magnetic field, or can it be launched beyond it, possibly damaging the spider?
12PW data sheet says 8.5mm one way max. https://www.markaudio.com/online_shop/alpair/alpair-12pw/
jeff
jeff
Did I miss a part when it states whether or not momentum can send a drivers coils further than the magnetic field?