Sold 2x SD8000 link - Used only in one competition - 26kW at 0.5 ohm

[murilo 10+ year member]

Hello

I´m selling the 2 amps that I used at SBN in my Marbella in Street B, did 156.9dB with them.

With them I got 10700W out of a single 12V battery (HX400) and of course, if you put a stable 15V on them you get 13kW each.

They are strap able and comes with the link cable.

Good condition.

2500 + shipping (the price wont drop)

Click to read more...

 

[scott s 10+ year member]

if i remember right these are a parallel strap. so 1ohm load is 2 ohm strap

 

[Andrew_as 10+ year member]

small footprint on these amps! bump

 

[cj407]

i still have seen no video of the amps put to good use....just pictures...with no scores

 

[Farmacist 10+ year member]

once again my question is, is that power rating constant? I mean do you get 10k out of a single battery for 3 seconds or for 60

 

[MakeshiftAudio 10+ year member]

From what I'm observing on the board, it looks to be what's similar to a matched inductance paralleld dual, or even triple Hbridge design. I can't really tell too much given the picture resolution, but it looks fairly close. That type of layout uses a very simple straight forward design, no tricks or anything special, but powerful as hell. I prefer that method over paralleling a lot of transistors, though the downside to using that style is it usually costs more, and needs a beefier driver to supply the gate charge needed (I usually used a simple gate driver driving what I call a minibridge using a set of NPN and PNP fets to drive the gates with a 24V+ and 24V- rail supplied by the SMPS, can supply AMPS of gate charge, only being limited by the PNP semiconductor's rating and the SMPS) or multiple small, individual bridge drivers.

It's not new technology, just good technology that cheap companies avoid. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif Bump for a godly amp.

I'm going to feel stupid if it's not that drive technology, but it sure looks like it. Could someone confirm this? //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[x2o 10+ year member]

oops sorry, i meant strapped at 0.5ohm (final load), i was meaning 1 ohm each. im pretty sure what murilo is talking about.
i guess it depends on how you word it personally. i think of 0.5ohm strapped as 2 amps at 1ohm each. im thinking of the final load when i say that.

Hm, still not really getting it. I guess there's just different uses for the term strapped. When I and other people I know say strapped, it refers to running a 1ohm load to two amps that are strapped, where each amp sees 0.5ohm because it is paralleled.

Kinda like bridging a 4 channel amp. A 4channel amp may be stable to 1ohm x 4 channels, but when bridged it'll be 2ohm x 2 channels, each channel being run at 1ohm. I don't know, maybe I'm confusing something here, it's very possible //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif. Very little sleep after the hours I've had at work lately. //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

Anyways, best of luck with the sale Murilo!

 

[01 S 10 10+ year member]

Hm, still not really getting it. I guess there's just different uses for the term strapped. When I and other people I know say strapped, it refers to running a 1ohm load to two amps that are strapped, where each amp sees 0.5ohm because it is paralleled.
Kinda like bridging a 4 channel amp. A 4channel amp may be stable to 1ohm x 4 channels, but when bridged it'll be 2ohm x 2 channels, each channel being run at 1ohm. I don't know, maybe I'm confusing something here, it's very possible //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif. Very little sleep after the hours I've had at work lately. //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

Anyways, best of luck with the sale Murilo!

FOCK, i dont know what i was thinking lol.... long day at work //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

yes, 1ohm strapped would be 0.5ohm each amp.. durr lol //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif. so i guess he had each amp at 0.25ohms //content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

 

[x2o 10+ year member]

FOCK, i dont know what i was thinking lol.... long day at work //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif
yes, 1ohm strapped would be 0.5ohm each amp.. durr lol //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif. so i guess he had each amp at 0.25ohms //content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

Ahh gotcha, haha all good I know the feeling man. Some shifts just get to ya //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif.

 

[us3 10+ year member]

Bump for a Great Guy, a Great Product and a Great Company to deal with!!!

Anyone purchasing these amps will not be dissapointed

Good Luck on the sale Murilo

Matt

 

[80INCHES 5,000+ posts]

Yes, for example we have a Explorer mounted with SD and Beyma in NY, the car has no tweeters and the mids (a bunch of 8", 6" and 5" are powered by a SD5000 and a SD1800. We use a equalizer to boost the highs, though.

i heard this explorer at sbn and he came to my boy shop ( bassline design)

and its really really loud

80

 

[ngsm13 5,000+ posts]

Bump for amazing amps! Great guy too!

nG

 

[murilo 10+ year member]

From what I'm observing on the board, it looks to be what's similar to a matched inductance paralleld dual, or even triple Hbridge design. I can't really tell too much given the picture resolution, but it looks fairly close. That type of layout uses a very simple straight forward design, no tricks or anything special, but powerful as hell. I prefer that method over paralleling a lot of transistors, though the downside to using that style is it usually costs more, and needs a beefier driver to supply the gate charge needed (I usually used a simple gate driver driving what I call a minibridge using a set of NPN and PNP fets to drive the gates with a 24V+ and 24V- rail supplied by the SMPS, can supply AMPS of gate charge, only being limited by the PNP semiconductor's rating and the SMPS) or multiple small, individual bridge drivers.
It's not new technology, just good technology that cheap companies avoid. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif Bump for a godly amp.

I'm going to feel stupid if it's not that drive technology, but it sure looks like it. Could someone confirm this? //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Hello, yes, our amps have H-bridge output topology, we use IR2010 drivers and a PIC controlling the power supply, especially the PWM so we can have the wide power voltage working range, from 7.5V to 18V or even higher.

I agree that 95% of the amps use half bridge because is a lot cheaper to build, they use a bunch of cheap components, we prefer like this so we could create the smallest amps in world for such power. We use always the top components, for example the power supply of the SD8000 have 16x IRF1404, and in the newer SD12kD we are using a even more powerfull (and expensive) TO267 power supply FET.

 

[murilo 10+ year member]

People the amps strap in parallel, so each amp see 1ohm and the minimal impedance strapped is 0.5ohm

 

[infamous_e46 5,000+ posts]

ill buy some amps from you if you let me stay at your house when i go to the chute box academy

 

[infamous_e46 5,000+ posts]

wanderlei silva and mauricio rua chute boxe

my favorite brazilian fighters