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Joined: Oct 2003
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Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Oct 2003
Posts: 3,738 |
i recently purchased 2 brand new subwoofers, and i now need an amp or two to power them. here is the info i have from the sub boxes:
Free Air Resonance (Fs): 27.2 Hz
Electrical â??Qâ? (Qes): 0.514
Mechanical â??Qâ? (Qms): 7.807
Total Speaker â??Qâ? (Qts): 0.482
Equivalent Compliance (Vas): 2.33 cu. ft. / 66.0 liters
One-Way, Linear Excursion (Xmax)*: 1.15 in. / 29 mm
Reference Efficiency (no): 0.249%
Efficiency (1W/1m)**: 86.2 dB SPL
Effective Piston Area (Sd): 84 sq. in. / 0.0542 sq. m.
DC Resistance (Re): 2.47 ohm
Nominal Impedance (Znom): 3 ohm
Thermal Power Handling (Pt): 750W
Driver Displacement: 0.14 cu. ft. / 4.0 liters
Net Weight: 45 ibs. / 20.4 kg
any idea what amp specs i would need to power them?
~Andrew
2001 VW Jetta Wolfsburg Edition
20 valves of fury
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Joined: Aug 2002
Posts: 8,281
Captain Impound Boy
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Captain Impound Boy
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Posts: 8,281 |
Something between the 500-1000 WRMS at 4 ohm should power them well.
What kinda subs are they? The impedence is 3ohm?
Like a Elemental Designs Nine.1
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Joined: Oct 2003
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Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Oct 2003
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Originally posted by SteedaSVTâ??¢:
Something between the 500-1000 WRMS at 4 ohm should power them well.
Like a Elemental Designs Nine.1
is that 1 amp for both subs or 1 amp per sub?
~Andrew
2001 VW Jetta Wolfsburg Edition
20 valves of fury
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Captain Impound Boy
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Captain Impound Boy
Joined: Aug 2002
Posts: 8,281 |
you could use that one amp to power both They are like 300 shipped
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Joined: Oct 2003
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Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Oct 2003
Posts: 3,738 |
good quality i assume? i was looking to keep the amp "in the family" with the subs (JL 12w7's). but 300 sounds like an excellent deal  ~Andrew
2001 VW Jetta Wolfsburg Edition
20 valves of fury
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Joined: Aug 2002
Posts: 8,281
Captain Impound Boy
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Captain Impound Boy
Joined: Aug 2002
Posts: 8,281 |
Oh wow W7? SHould have guessed that or the W6 with the 3ohm load. They love power!!!!
Wire them down to a 1 ohm load and the amp will put out 1200wrms. 3 year warranty, I had one problem and they sent me a new one before i sent the old out. Seems some people have had problems with them in the past but i have ordered a ton of stuff from them and Zero problems.
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Joined: Apr 2001
Posts: 566
Veteran CEG\'er
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Veteran CEG\'er
Joined: Apr 2001
Posts: 566 |
Originally posted by Pimpalicious316:
Free Air Resonance (Fs): 27.2 Hz
Electrical â??Qâ? (Qes): 0.514
Mechanical â??Qâ? (Qms): 7.807
Total Speaker â??Qâ? (Qts): 0.482
Equivalent Compliance (Vas): 2.33 cu. ft. / 66.0 liters
One-Way, Linear Excursion (Xmax)*: 1.15 in. / 29 mm
Reference Efficiency (no): 0.249%
Efficiency (1W/1m)**: 86.2 dB SPL
Effective Piston Area (Sd): 84 sq. in. / 0.0542 sq. m.
DC Resistance (Re): 2.47 ohm
Nominal Impedance (Znom): 3 ohm
Thermal Power Handling (Pt): 750W
Driver Displacement: 0.14 cu. ft. / 4.0 liters
Net Weight: 45 ibs. / 20.4 kg
any idea what amp specs i would need to power them?
~Andrew
The majority of the specs you give have nothing to do with which amp will power them. These specs would go into a box building program to determine what size/type enclosure would perform best with this speaker and estimate the output.
To figure out what amp would work best with them, look for the RMS power handling. Find an amp that puts out up to that much power (again, RMS not peak) and you'll be fine.
I personally prefer to get amps for my subs that are no more than 3x the power of the amps for my mids/tweets so that I get a much more balanced output. Get a sub amp that is way more power than your mid/high amp and you're wasting power and money.
Keep in mind that for typical everyday listening going down the road, the amp (no matter how powerful it is) will be putting out about 15-50 watts. Think of it like an engine... it's nice to have the extra power if you're really going to lay in to it, but for driving around town you don't get anywhere near the capabilities available.
Bob Johann
SoundQ SVT
1998 T-Red SVT Contour #3088
2001 IASCA Pro Street 1-600 Champion
2002 SLAP Pro Street 1-600 Champion
2002 MECA SQL Master Class Champion
2003 IASCA StreetX 1-600 Champion
2005 SLAP Expert Street Champion
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