Hifonics Cronos XX bass remote - diyAudio
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Old 18th April 2008, 09:04 PM   #1
Bertje is offline Bertje  Netherlands
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Join Date: Jan 2004
Location: Holland
Default Hifonics Cronos XX bass remote

I have this Hifo for repair over here, it's a class d. Replaced 12 Mosfets in the powerstage, it works again normal. Power output to 600w / 4 ohm.

But...whem I connect the bassremote module and turn at the potm. it goes into protect. The red LED (protect) on the bassremote always lights up. The blue (power on) is always off.

Remote module contains only a potm and 2 resistors and 2 leds, all are OK.

Cable OK...straight RJ12 6 pin

Voltages on the opamps are +/- 15V when remote connected..

There is a LM13600 inside, I think thats the remote control opamp?

Anyone has some tips..?

Rob.
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Old 18th April 2008, 10:04 PM   #2
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Join Date: Nov 2003
Location: Louisiana
Does the amp go into protect if the remote is plugged in before the amp is powered up?

Have you confirmed that you have pin to pin continuity from the main board to the remote board? The connectors could be defective. I've seen some amplifiers that would self-destruct if there was a bad connection on the remote cable or connector. These were older amps but it's something you should check.

Are you sure that the cable that Hifonics uses is a standard RJ12 cable. If I remember correctly, some manufacturers use cables that are not the same as telephone cables.

The 13600 is the IC they use to control the level. It's not a standard op-amp.
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Old 19th April 2008, 04:47 AM   #3
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Bertje, how are you doing ? Are you sure you have the correct Sub bass control for that amp. Hifonics was jumping around between suppliers back then, and remotes varied by the series number....
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Old 19th April 2008, 09:30 AM   #4
Bertje is offline Bertje  Netherlands
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Join Date: Jan 2004
Location: Holland
Well...the Cronos XX have two connections, remote in and remote out. The remote out is for controlling a slave amp, so I don't use.
The remote IN is for connecting the bass remote control unit (master)
The cable is for the remote OUT, so that would cause the problem (maybe..??). Different pinning for remote OUT en IN...?
Could be, but ...

The owner says that both cables (original remote IN and remote OUT) give problems, the original cable is installed in his car so I cannot test or measure.

Strange problem, without bassremote connected the amp has an idle current of 3A and normal output up to 600w @ 4 ohm.

@Perry LM13600 is an OTA indeed..
1moreamp: fine, thank you...
Rob.
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Old 19th April 2008, 07:29 PM   #5
jol50 is offline jol50  United States
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Join Date: Nov 2007
I had that with a lightning audio 1kw class d strike amp. Came used with remote and the remote would not work; freaked the amp out hardly any sound and if you turned up remote it would oscillate the sub badly. LED on remote were lit opposite of those on amp. Took remote apart and it said X1.1000/etc on board, the numbers for storm series amps IIRC not strike amps (S1.1000) though they use the same sink. They do not run at same ohm loads so they are different internally. It uses the cable like a PC network, larger than phone jack. BTW the strike and storm remotes look the same externally in the manuals.
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Old 23rd April 2008, 12:27 PM   #6
Bertje is offline Bertje  Netherlands
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Join Date: Jan 2004
Location: Holland
Found it!

So, there are two sort of cables used, for linking the bassremote signal from the master amp to the slave amp. This is the remote OUT cable. This cable is straight RJ12.

The other cable, remote IN, is used for the bass remote module.
This cable is cross RJ12...

btw, from the bassremote module the blue power-on LED was blown.

So don't mix them.

Rob.
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Old 23rd April 2010, 12:03 PM   #7
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Hi!
I have the same amp and its totally dead...
does anyone have service manual or at least schematics?
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Old 23rd April 2010, 12:07 PM   #8
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Default help!

I have the same amp and there was some smokey signals from it.... Does anyone have service manual or some kind of schematics?
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