Unknown problem, please help =)

[ogustuce 10+ year member]

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

-speaker 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

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[ThatChevyGuy 5,000+ posts]

could be an ohm load issue sending the amp into protect

 

[ogustuce 10+ year member]

could be an ohm load issue sending the amp into protect

and how could i resolve that problem? plug 2 speakers in the same 'hole' to lower the ohms? (i read somewhere that when you adds ohms togheter it actually substratct them? ex: 4 ohm + 4 ohm = 2ohm)

 

[Tenacious]

It's most likely that POS Sony Xplod amp. Ditch it and the capacitor while you're at it and get a decent amp.

 

[ogustuce 10+ year member]

It's most likely that POS Sony Xplod amp. Ditch it and the capacitor while you're at it and get a decent amp.

what would you recommen lol? i dont have 500$ to spend for an amp....

 

[Tenacious]

what would you recommen lol? i dont have 500$ to spend for an amp....

Almost anything is better than a Sony amp.. You need something that outputs about 40w per channel at 4 ohms for those speakers.

A MB Quart REF4.50 would only be $90 and would be much better... Just make sure the problem is the amp itself and not your wiring or something else

 

[AxT4430 10+ year member]

sounds like your sending the amp into protect, try setting your gain down. Your pulling to many ampheres, and that amp is seeing a low voltage.

 

[ogustuce 10+ year member]

sounds like your sending the amp into protect, try setting your gain down. Your pulling to many ampheres, and that amp is seeing a low voltage.

the amp is set to '1' (the little wheel behind the amp), so you think i should set that wheel lower than 1 =o? it goes from 0 to 2.

(just to be sure i understood what you said correctly)

 

[AxT4430 10+ year member]

Yes, set the GAIN nob lower. Then test your speakers agian, this will not confirm 100% what the culprit is but try it and see! Also, do you have a dmm/multimeter? Do you know how to set your gain with it?

 

[ogustuce 10+ year member]

Yes, set the GAIN nob lower. Then test your speakers agian, this will not confirm 100% what the culprit is but try it and see! Also, do you have a dmm/multimeter? Do you know how to set your gain with it?

nope, please tell me. i like to learn

 

[AxT4430 10+ year member]

How to Set Your Gains

That one is just using your ears, which is fine if you have experience.. but there is better way for noobs, Im too tired to write it up.. So ill search fast for a good review

 

[AxT4430 10+ year member]

http://forum.sounddomain.com/ubbthreads.php/ubb/showflat/Number/65167/page/1

 

[ogustuce 10+ year member]

thank you, will try this out

 

[AxT4430 10+ year member]

thank you, will try this out

You can simply just cut your gain in half, then by half again and see if it solves your problem.

Then actually set it!

Also, any general car parts store may let your rent a diagnostic multi meter if you dont want to buy one!