Finish Aleph 2 "but questions"

jeclk · 14th February 2003, 05:42 PM

I am happy,

I have success my blocks Aleph 2.

but I have a question. If one 240 dies, I afraid of the D.C. current in the HP .

1----- know you are a means of protection?

I find that the blocks are very hot.

my heatsinks are large 350x200x40.

2----- should ventilators be put?

Mad_K · 14th February 2003, 06:36 PM

stay happy!

As long as you can touch the heatsinks you are ok!

Don't worry, the Alephs are industrial designs, and they generally don't ever break!

Mad_K · 14th February 2003, 06:38 PM

Nelson Pass · 14th February 2003, 08:14 PM

Even if you pop an output, it's very rare to see
speaker damage as long as you fuse the AC line
at a reasonable level.

Peter Daniel · 14th February 2003, 08:36 PM

Quote:

Originally posted by jeclk
I am happy,

I have success my blocks Aleph 2.

but I have a question. If one 240 dies, I afraid of the D.C. current in the HP .

1----- know you are a means of protection?

I find that the blocks are very hot.

my heatsinks are large 350x200x40.

2----- should ventilators be put?

Peter Daniel · 14th February 2003, 08:39 PM

Quote:

Originally posted by jeclk
I am happy,

I have success my blocks Aleph 2.

but I have a question. If one 240 dies, I afraid of the D.C. current in the HP .

1----- know you are a means of protection?

I find that the blocks are very hot.

my heatsinks are large 350x200x40.

2----- should ventilators be put?

I shorted the output on my A75 amp once and one IRF230 died. The was no DC on the output, because the primary fuse died as well.

BrianGT · 15th February 2003, 02:08 AM

Quote:

Originally posted by Peter Daniel

I shorted the output on my A75 amp once and one IRF230 died. The was no DC on the output, because the primary fuse died as well.

I was testing my Jordan JX92s speakers yesterday that I just built, with my leach amp. I haven't totally finished the cabinets yet, so the I just have the wires coming out of the back, and I used banana plugs to hook them up. I moved the left speaker a bit, and I noticed distortion coming from it. I checked the wiring and the banana plugs were intermittingly shorting out. I found that I could short the terminals, and it would get quiet, and then when I unshorted them, it would work just fine again. I guess the protection circuit works. None of my amplifier fuses died (power rails, speaker level or ac line fuse). The dc offset never goes over 10mV.

I guess I will have to be more careful when I finish my Aleph amplifiers...

--
Brian

BrianGT · 15th February 2003, 02:15 AM

top and bottom are not glued on yet and are just sitting on top and bottom to show the finished size.

I got my cardas binding posts from Rodd, which will be going where the holes are where the 12ga wire is coming out of now.

--
Brian

bawang · 15th February 2003, 09:58 AM

Try building one of the many designs for loudspeaker DC protection available in the market. I am using ESP's (Rod Elliott) design with great success, and it does not need a dedicated DC supply!

14th February 2003, 05:42 PM	#1
jeclk diyAudio Member Join Date: Oct 2002 Location: France	Finish Aleph 2 "but questions" I am happy, I have success my blocks Aleph 2. but I have a question. If one 240 dies, I afraid of the D.C. current in the HP . 1----- know you are a means of protection? I find that the blocks are very hot. my heatsinks are large 350x200x40. 2----- should ventilators be put? __________________ stay zen

14th February 2003, 06:36 PM	#2
Mad_K diyAudio Member Join Date: Sep 2002 Location: Norway	stay happy! As long as you can touch the heatsinks you are ok! Don't worry, the Alephs are industrial designs, and they generally don't ever break! __________________ Mads K

14th February 2003, 06:38 PM	#3
Mad_K diyAudio Member Join Date: Sep 2002 Location: Norway	__________________ Mads K

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14th February 2003, 08:14 PM	#4
Nelson Pass The one and only Join Date: Mar 2001	Even if you pop an output, it's very rare to see speaker damage as long as you fuse the AC line at a reasonable level.

15th February 2003, 09:58 AM	#9
bawang diyAudio Member Join Date: Oct 2001 Location: Malaysia	Try building one of the many designs for loudspeaker DC protection available in the market. I am using ESP's (Rod Elliott) design with great success, and it does not need a dedicated DC supply!

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