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Re: Gonna Try Building a 1kW Class D Amp for Only $396
St_PatGuy #335136 01/21/11 02:27 PM
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Steve which model did you get the 2000 kit?, man they have lots of kits and different model numbers, kinda confusing. I thought when bridged you could only drive 1 channel, or is that for each board you have?


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: Gonna Try Building a 1kW Class D Amp for Only $396
SirQuack #335168 01/21/11 04:55 PM
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See my post a few sections back. He essentially bought a modified 2000 kit.


I am the Doctor, and THIS... is my SPOON!
Re: Gonna Try Building a 1kW Class D Amp for Only $396
Ken.C #335176 01/21/11 05:39 PM
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Got a little antsy, so I dragged out my variable AC power supply and dialed it into about 50V AC to test the amps. I will say this... IT GETS LOUD! The sound seems about the same as the AVR-3806, but its hard to say because I'm just running one VP150 at a time. I hit 104db (@ 1m) constant output with the iPhone turned all the way up, and was pulling about 50W. Amp IC temp hovered around 56C (that's the actual chip, not the heatsink which was only warm to the touch). But just as I was typing this mail, the toroid arrived! Will be away for a bit doing some rewiring, but looking real good so far. Pix attached:

Test setup:


Temperature:


Toroid!





LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7
Re: Gonna Try Building a 1kW Class D Amp for Only $396
St_PatGuy #335182 01/21/11 06:26 PM
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Thanks for those links everyone, the Protocase supplier looks like a winner if it isn't too expensive.

That torroid looks pretty tall 6-8", that would allow for alot of room for air circulation around the system.


Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70
Re: Gonna Try Building a 1kW Class D Amp for Only $396
jakewash #335196 01/21/11 07:18 PM
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The toroid is 6.2" diameter, and 3.5" tall.


LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7
Re: Gonna Try Building a 1kW Class D Amp for Only $396
SRoode #335200 01/21/11 07:29 PM
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Wow!, only 3.5 tall those pics do nothing for sense of scale. That makes it really nice for a lower profile cabinet, this just keeps getting better and better smile


Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70
Re: Gonna Try Building a 1kW Class D Amp for Only $396
jakewash #335220 01/21/11 09:21 PM
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Well, toroid all hooked up (was a bear, it has 2 primaries and 4 secondaries) and tested on the VP150. Everything working great! Going to put it to the real test now... A pair of 4ohm M80s.






LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7
Re: Gonna Try Building a 1kW Class D Amp for Only $396
SRoode #335223 01/21/11 09:44 PM
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That's almost too easy.


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris
Re: Gonna Try Building a 1kW Class D Amp for Only $396
ClubNeon #335225 01/21/11 09:49 PM
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Almost? If the dude sold predrilled cabs, it would be a no brainer.


I am the Doctor, and THIS... is my SPOON!
Re: Gonna Try Building a 1kW Class D Amp for Only $396
Ken.C #335230 01/21/11 10:20 PM
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The M80s acutally got the amp heatsinks hot in bridged mode! I could sustain 102 db, both speakers, from 12 feet away no problem. The amp started going into protect mode (high heatsink temp over 100C) at about 105db sustained (my ears are ringing right now). What the amp does is turn off the affected channel until it cools and turns it back on again. I'm going to do a quick rewire to unbridge the amps to see how far I can push them. Some people had this problem and added to the heatsink and put a fan on it.

The sound is INCREDIBLE! It really does sound punchier than the AVR-3806. Very clear and tight. The wife said it was not even close (she liked it better than the AVR-3806), but it was a bit more close for me. Definitely punchier and tighter sound. If it sounds just as good unbridged with a higher output headroom before overtemp, I may leave it that way and hook the VP180 up now.


LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7
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