Question about Soundstorm Car Audio & Video

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Can a soundstorm F2500D handle a subwoofer impedence of 1.7 ohms?? My two 10inch JBL subwoofers are hitting at an impedence of 1.7ohms i was told to get an amp that is 1ohm stable and im wondering if the Soundstorm F2500D is a true 1ohm stable amp?

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Hello sincere4140,

The Soundstorm is stable only to 2ohms.

Hope this helps.

Posted on Jul 29, 2009

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What kind of amp can adequately power P112 S8 subs


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How to hook it up for one ohm


oh yes the JBL GTi W15GTI Mkll. this subwoofer is a dual 6 ohm voice coil subwoofer. This is impossible to run this sub alone and get 1 ohm you will need another JBL GTi W15kll. the lowest impedance you can go to is 3 ohms. you can achieve this by connecting the positive terminals together and then running a wire from the two positives to the positive terminal on the amp. then connecting the negative terminals together and then running a wire to the negative terminal on the amp. this is a real nice sub it just has that one down fall of having a six ohm voice coil.

Aug 01, 2011 | JBL GTi W15GTi MkII Car Subwoofer

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Hi can you tell me that impedence on JBL TLx4 speakers- i need to know if they are compatible with my denon RCD M37 dab player thanks


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Jul 04, 2011 | JBL PSW-D110 Speaker

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I have a jbl 10inch subwoofer, with a blown pc board,nomber, 104HKTS1400V-E. How do I get a replacepent?


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What is the voltage polarity ac or dc of the power adapter for SP-613 speakers?


this is actually the product description for your speaker


Product Description
Front
Speaker Unit: 1inch +6.5inch *2+8inch
Power: 10-100W
Sensitivity: 88 dB
Impedance: 4 ohm
Frequency Response: 45-20K Hz
Production Size: (H*W*D) 1087*210*336mm
Package Size: (H*W*D) 1162*500*400mm

CENTRE
Speaker Unit: 1inch +4inch *2
Power: 10-60W
Sensitivity: 86 dB
Impedance: 8 ohm
Frequency Response: 75-20K Hz
Production Size: (H*W*D) 160*500*179mm

SURROUND
Speaker Unit: 1inch +4inch
Power: 10-60W
Sensitivity: 85dB
Impedance: 8 ohm
Frequency Response: 75-20K Hz
Production Size: (H*W*D) 225*160*158mm
Package Size: (H*W*D) 550*273*415mm /3PCS

ACTIVE SUBWOOFER
Speaker Unit: 10inch
Impedance: 8 ohm
Crossover Point Control
Handling Power: 120W
Production Size: (H*W*D) 405*328*350mm
Package Size: (H*W*D) 465*330*465mm

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I have 2 positives and 2 negatives on back of my alphasonik sub, do i connect amp to one side or both sides?


Hello gaz69,

Your PSW815 has 2 ohm dual voice coils allowing you to better match the impedance to your amp. Each voice coil is 2 ohms. If you wire them in parallel (both +'s together and both -'s together and then to the amp terminals), the sub presents a 1 ohm load which is too low for most amps. Wiring the voice coils in series (one + to the other - and the remaining + and - to the amp terminals) results in a 4 ohm load.

This link shows the wiring diagram for both options. If you know for sure that your amp is 1 ohm stable, use Wiring Option #1. If the amp is not 1 ohm stable, use Wiring Option #2.

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Finding the best amplifier


Hello sharky75,

That 1600 watt peak power figure for your subwoofer can't tell you what amp you need. You need to know the maximum RMS power the sub can handle. And you need to know the impedance (ohms) of the voice coil(s). JBL GT5 series subs have an RMS rating of 275 watts. The GTO series handles 300 watts. The Power series handles 400 watts. The GTi series handles 700 watts. Some are single voice coil, so the impedance is fixed. Others are dual voice coil allowing you to wire them for different impedance loads.

For maximum performance your amp should be able to provide at or near the same number of watts RMS into the lowest impedance at which the sub can be configured. For example, if your sub is the Power Series Model number P1224, it has dual 4ohm voice coils and can be wired to present either a 2ohm load (parallel) or an 8ohm load (series). You want to wire the voice coils in parallel for the 2ohm load and select an amp that outputs up to 400 watts RMS into 2ohms. The Orion Cobalt CO8001 is just such an amp. If you have one of the GTi Series subs, a better amp would be the JVC Arsenal KS-AR75 which outputs 700 watts into 2ohms.

Hope this helps.

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1 Answer

When i connect both subs(jbl gt 1041d) my amp goes to protection and when i ony hook one up it doesnt go to protection


Hello lilcylentsur,

It sounds like when you connect both subs, the impedance match is too low for the amp to handle. 2 4-ohm DVC subs with both the coils and subs wired in parallel will present a 1-ohm load which is too low for most amps.

The solution is to wire the voice coils in series, (connect a short jumper from one positive to the other negative on each sub). and then wire the remaining terminals to your amp. This will result in a 4-ohm load which most amps can handle.

Here's a "wiring wizard" which allows you to see the ohm loads of different wiring configurations.

Hope this helps.

May 07, 2009 | JBL GT1041D Car Speaker

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Soundstorm amp


SPECS
  • Black P.P. Cone
  • Specially Treated Foam Edge Suspension
  • 2.5' High Temperature Dual Voice Coil
  • Magnet Weight: 95 OZ
  • 1600 Watts Max Power Handling
  • Impedance: 4 Ohm
  • Chromed Back Plate Cover
  • Rubber Magnet Boot Cover
  • Jan 08, 2009 | Lanzar OPTI1222D Car Subwoofer

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