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Unknown problem, please help =) need pro

Old 02-06-2013, 08:16 PM
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Unknown problem, please help =) need pro

My problem is when i put the volume to 30+ (up to 50) my 4 speakers stops working. so the 4 speakers stop working and i only hear tweeters and the subwoofer. if i turn off my radio and turn it back on, the speakers work again normally but will shutdown eventually if i dont lower the volume.

Here is how everything is plugged (pretty much)
i have 1 amp for the 2 subwoofer( pheonix gold 2 chan 700w/chan) and 1 amp for the speakers (sony xplod 4 chan 60w/chan) and 1 capacitor for the sub's amp

4 speaker wires from the back of the radio -> amplifier then amplifier -> each speaker (4 total)
RCA (from the radio) -> subwoofer amp
remote -> "Y" split -> to each of the 2 amps
Power: 4gauge from battery -> distribution block -> 1x 8gauge wire to speaker amp and 1x 8 gauge wire -> capacitor -> sub's amp
ground: (x3) 4 gauge wire. 1 for each amp and 1 for the capacitor and all grounded at different spots.

here is the amps specs:

sony xplod xmgtx6040 - 600w (my speaker's amp)

Channel Configuration 4/3
Power Supply MOSFET Power Supply
Maximum Output Power 150W 2 (at 2 ohms) + 300W 1 (at 4 ohms BTL), 110W 4 (at 4 ohms)
Rated Output Power 70W 4 / 1.0% (at 2 ohms), 60W 4 / 1.0% (at 4 ohms)
High Pass Filter / Slope 80Hz (Variable), -12dB/oct (Selectable)
Low Pass Filter / Slope 80Hz (Variable), 18dB/oct (Selectable)
Frequency Response 5-50kHz
Signal-to-Noise Ratio 100dB
Total Harmonic Distortion (1kHz) 0.05%
Input: Number of Channels 4
Tolerance +0/-3dB
Dimensions (W x H x D) 384 55 252mm
Weight (kg) Approx. 3.1kg

pheonix gold xs2500 - sub's amp

* 2 Channel Mosfet Amplifier
* PWM Mosfet Power Supply Defeatable
* Advanced Overload and Thermal Protection
* Hi Level Input Connections
* Advanced Muting Circuitry Eliminates Turn-On And Turn-Off Noises
* Metal Film Capacitors/Resistors In Signal Path
* 24kt Gold Plated High Current Power And Speaker Terminals
* Isolation Mounting Feet
* Optional XS Link For Seamless Multiple Amplifier Installation
* Frequency Response +/-1dB, 20Hz to 20 kHZ
* Signal to Noise Ratio (A-weighted) >100dB
* Max Continuous Bridged Power @ 1% THD 500 watts x 1 into 4 ohms @ 14.4 Vdc
* Max Continuous Power per Channel @ 1% THD 250 watts x 2 into 2 ohms @ 14.4 Vdc
* Nominal Continuous Power per Channel @ 1 % THD 150 Watts x 2 into 4 ohms @ 14.4 Vdc
* IASCA/USAC Power Rating 50 Watts x 2 into 4 ohms @ 12.5 Vdc
* Minimum Load when Bridged 2 Ohms
* Minimum Load per Channel 1 Ohm
* Input Signal Voltage Range 0.1 volts to 2 volts
* Crossover Type Resisitor Network, Linkwitz Riley,
* Highpass/Lowpass Crossover Slope 24 dB per octave
* Crossover Frequency Range 20-550Hz
* Factory Crossover Setting 85Hz
* Auxilary Output Channels 2 Auxilary Output Frequency Range Rnet
* Bass Boost 0- to +18dB @ 45 hZ
* Power Supply Voltage 10Vdc to 15.5Vdc
* Recommended Fuse 60 amp
* Dimensions 9.25L x 9.25W x 2.10H

- speakers specs -

soundstream arachnid
Size & Type 6.5" 2-way
Power Handling (watts) 80
Efficiency 92dB
Top Mount Depth 2.5"

•Polypropylene Injection Cone
•NBR Rubber Surround
•1" Voice Coil on Aluminum Former
•Quick Disconnect Terminals
•Conex Spider Suspension
•1" Flush Mount Dome Tweeter
•Passive Crossover Included
•Speaker Grill Included
•Frequency Response: 70-20kHz

what could cause my speakers to stop working when i put it loud =o? the problem is recent, i didnt have that problem before. the speakers amp is set to 1 and the speakers are stoundstream 80w, 4 ohm


Last edited by ogustuce; 02-06-2013 at 08:21 PM.
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Old 02-06-2013, 09:10 PM
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Posts: 202
Hey man, which headunit do you have, do you have an rca output for the speakers on the back of the HU?
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Old 02-06-2013, 09:19 PM
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nope only one rca out from the HU. its a sony xplod, 52w/chan.

my first hook up was rca -> speaker's amp then from speaker's amp to sub amp
i also tried rca -> sub amp then sub amp -> speaker amp but in both cases i had a strange noise coming out of the speakers when the HU turned off so i plugged rcaa only to sub amp

(theres an 'in' and 'out' output for rca on each amp)

Last edited by ogustuce; 02-06-2013 at 09:32 PM.
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Old 02-07-2013, 02:52 PM
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it could be the capacitor, try taking it off, capacitors areent good try that!
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Old 02-07-2013, 06:02 PM
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Posts: 16,855
^You're kidding right?

Are the tweeters powered by the radio directly or by an amplifier. It sounds like your Sony amplifier is going into protection. Powering the system down and back up resets it. The next time it shuts down, check for a protection LED.
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