Rumble 100 SMPS

[oc disorder]

Welcome to the Land Of Board swaps... (we tried) RUMBLE 200 = ICEPower 50ASX2 (think that one is Baby ice !)

http://www.fmicassets.com/Damroot/Original/10002/Rumble%20500%20V3%20Schematics-Diagrams.pdf

Not sure the above should be so available ?????

from search for Rumble 500

[nosaj]

Welcome to the Land Of Board swaps... (we tried) RUMBLE 200 = ICEPower 50ASX2

http://www.fmicassets.com/Damroot/Original/10002/Rumble%20500%20V3%20Schematics-Diagrams.pdf

Not sure the above should be so available ?????

from search for Rumble 500

Just a question, how do you search or access that site to look for other modules?

Thanks,
nosaj

[Jazz P Bass]

Answer: you cannot.

[Jazz P Bass]

just found this on another forum! Although it's the 100. Very different from this 200, which I cannot for the life of me figure out where the PA is.

The Rumble 200 uses the 50ASX2 module.
Ice 50ASX2.pdf

The full datasheet: icepower50asx2.pdf

[oc disorder]

Search me ! Just found it with Google..


There is some interesting reading re Ice modules here although in German.

http://www.hifi-forum.de/viewthread-71-11152-5.html

Google Translate
https://translate.google.com.au/tran...tml&edit-text=

[lowell]

This might the most odd thing I've in a while. Fender using such a module. Don't get me wrong I know it is done...but...to have a completely separate identity than the amp it is installed in. Weird. Odd.

So I just get one on ebay and boom. ?

Is this class D? That's my guess.

Thanks everyone.

[Jazz P Bass]

Man, you gotta love Google Translate.
From the sbove listed forum:
"A true symmetrical signal transmission has therefore no audio mass! "

[nosaj]

This might the most odd thing I've in a while. Fender using such a module. Don't get me wrong I know it is done...but...to have a completely separate identity than the amp it is installed in. Weird. Odd.

So I just get one on ebay and boom. ?

Is this class D? That's my guess.

Thanks everyone.

Bang & Olufsen ICEpower 50ASX2 SE 2x50W Class D Amplifier UNUSED
nosaj
ICE Power 50ASX2 Power Amplifier Bang & Olufsen 50 ASX2 | eBay

[Jazz P Bass]

This might the most odd thing I've in a while. Fender using such a module. Don't get me wrong I know it is done...but...to have a completely separate identity than the amp it is installed in. Weird. Odd.

So I just get one on ebay and boom. ?

Is this class D? That's my guess.

Thanks everyone.

Yes it is class D.

Make darn sure that you have a signal going into the module, as the module may not be the fault.

Fender is not alone in using the modules.
Bang & Olufsen must have one heck of a sales team.
Genz-Benz (when they existed) & Yorkville also come to mind as using the Ice module.

[Leo_Gnardo]

Bang & Olufsen ICEpower 50ASX2 SE 2x50W Class D Amplifier UNUSED
nosaj
ICE Power 50ASX2 Power Amplifier Bang & Olufsen 50 ASX2 | eBay

Kool! $100 a pop, ships from beautiful downtown Montebello CA just south of LA. Now I know not to get into a panic when I run across a bad one. 83 sold - all the seller needs to do is keep up the good work then he can rival McDongle's - "over 150 billion sold!"

[Jazz P Bass]

And if the repairs really come rolling in, here is a deal: ICE Power 50ASX2 5 pack.
ICE Power 50ASX2 Power Amplifier Bang & Olufsen 5 pack | eBay
That brings a single unit down to $90.

[Enzo]

Lowell, this doesn;t say Fender on it, but it really is no different from building an amp and using a LM3886, a TDA7293, or even a TDA2030. WHy design a whole thing when the exact thing already exists as a drop in part? Those are entire power amps in one module.

[lowell]

I see what you're saying.

[SCAMP_2052]

Picked up a "fixer" Fender Rumble 500 Combo on CL.
Tag: 'Overdrive' LED lights at high power with some clipping/volume reduction.
Finding #1: 24 VDC Aux SMPS drops as low as 16V8 during high power pulse. This is below the Vdrop for the 7X15xx regulators.
Query: I'm not sure if this the root cause, or a side effect of the systems overload protection circuits.
Query: Anyone seen this before?
Ref: http://music-electronics-forum.com/t42841-2/

[Enzo]

My reaction is the SMPS is cycling, trying to rid itself of excess load, most likely in the power amp. Alternately a shorted or very leaky rectifier in the secondary side of the SMPS.

Welcome to the forum. May I suggest you start a new thread for your unit, rather than tack on the end of a long existing one. That reduces confusion, and you will get better response with a new thread.