Autopsia De Un Monitor Krk Rp8- Krk Rp8 Autopsy (en Ingles)

internacional | técnología y maquínarias | audio/software/técnología Friday May 30, 2008 16:13 by Fuente: Fivefish.net sonidoslibertarios at resist dot ca

So I bought a KRK RP8 monitor from some online retailer (which shall remain nameless). Unfortunately, one of the monitors was DOA... Dead on Arrival.

Well, it's not really DEAD, since I can hear some static sound from the speakers as soon as you flip the power on switch. i.e. even without any signal input, you can hear this crackling noise.

I called them and complained about waiting so many weeks for the monitors, and then receiving a broken monitor. They sent me a replacement, which entails several weeks of waiting again. I told them, I won't be shipping this broken monitor back to them on my dime. If they want it, they should send me a prepaid UPS label. Well... I got nothing. I waited for months hoping they'll call or email demanding the broken monitor be sent back, but no word from them.

In hindsight, I should have ordered instead from Zzounds. They have great service and would have shipped the product fast and be on top of things. Instead foolish me, trying to be penny-wise, went somewhere else and had to deal with all this headache.

So, that means I have an extra RP8 monitor in my possession.... except it's broke.

Well, it's a waste to have this RP8 just sitting in my studio not getting any use. So I decided to figure out what's wrong with it and try to fix it. This webpage is meant to document that process!

The RP8 is an 8" active monitor sold by KRK Systems. Here are the specs:

Input: XLR, RCA & 1/4 in. TRS - 10k Ohm Balanced/Unbalanced
Dimensions (H x W x D): 15 x 10 7/16 x 12 in. (38.1 x 26.5 x 30.4 cm)
Shipping Weight: 30 lbs. (15 Kg)

(SIGUE)

More Specs:

In case you want to know, it is made in China... not US of A. Well, it says in the box designed and engineered in the US.

Like what I said earlier, I can hear some static sound from the speakers as soon as you flick the power on switch. Here is an audio clip. (Somewhere in the middle of the clip, I turned up the gain so you can hear it more clearly.)

Power On - Static Noise

Picture below is the setup I used for the above recording. It was a dead monitor, so I used the DIE HARD Ultimate Collection as a mic stand/support!

Okay, after documenting the problem, it's time to play doctor and operate on this behemoth! Click on Next page for step-by-step pictures of it's dissection and autopsy!

DO NOT, I repeat, DO NOT remove the screws marked with the RED X. The four screws around the "Caution" label is for the power transformer, and the 3 screws around the ROKIT label holds the heatsinks and PCB for the amplifier board.

After you've removed all screws, you'll find out that the back plate is still attached to the speaker box. This baffled (pardon the pun) me and I began to suspect that maybe the back is glued ot the wooden box, or there is a locking mechanism, or I need to remove more screws...

After fiddling around and trying to tap around the monitor with my hand (closed fist), the back plate finally got loose!

This is a shot of the opened RP8! Woohoo!!!

The perimeter edges of the back plate has some sort of rubber lining, and I think this assures an air-tight seal around the plate. So it may take some coaxing and work to pry it loose.

Okay, are you ready to peak and see what's inside the RP8 Active Monitor?

Next Step... Inside the RP8 Active Monitor