Amp too powerful

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donnie5336

Copper - Posts: 52

Joined: July 27, 2004

Location: United States

Posted: August 08, 2004 at 10:30 PM / IP Logged

I have a question about using an amp that pushes more than the speakers recommend. I want to hook 4 subs up that handle 500w RMS, 1000w max each. These are DVC subs 4ohm to each coil. First question- If I wire two subs to each channel with all voice coils in parallel, wouldnt that be a 1 ohm stereo load? Second question - I have a M/A audio hc2502 amp that pushes 2500w rms at 1 ohm stereo load. (1250rms per channel) If i turn the output level down to about 3/4 or 1/2, would I still be pushing to much wattage or should that be ok? Thanks.

Donnie

donnie5336

Copper - Posts: 52

Joined: July 27, 2004

Location: United States

Posted: August 08, 2004 at 11:31 PM / IP Logged

if I don't use these subsi have, any suggestions for some good 10's or 12's that can handle this amp? i'd like 2 good 12's but 4 10's could work. any suggestions??? its a m/a hc2502 amp, 0.5 ohm mono stable (2500w RMS), or 1 ohm stereo (1250w RMS per channel). the wattage halfs everytime the resistance doubles (1250w rms @ 1 ohm mono, etc.). I really wanna try to get good use from this amp. any good suggestions??

Donnie

sk8ingsmurf

Copper - Posts: 198

Joined: March 18, 2004

Location: United States

Posted: August 08, 2004 at 11:38 PM / IP Logged

The subs wired in for 1 ohm that amp pushes just fine, just make sure to set your gains right and forget about the stupid bass boost if it has one, but yeah that amp if just fine, with the right settings you could power a reactor sub ($6 off of ebay), off of a JL 1000/1

heavilymedicate

Silver - Posts: 328

Joined: August 05, 2004

Location: Texas, United States

Posted: August 09, 2004 at 2:27 AM / IP Logged

I was not able to find that amp when I looked to get the specs but... If your numbers are right your only question is how much money do you have and what subs do you want. Personally i prefer JL's but there are a lot of good subs to be had if you have the cash! So, how much ya got? Amp too powerful -- posted image.

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stevdart

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Joined: January 24, 2004

Location: Pennsylvania, United States

Posted: August 09, 2004 at 9:06 AM / IP Logged

Your best bet is to set the amp gains using a DMM, and measure output voltage to the speaker terminals. Use a test tone at about 50 Hz, disconnect one of each of the speaker leads, and with the HU at max usable clean volume. Play the tone through the CD. You won't hear it with the subs disconnected. Measure using the AC volts scale on the meter, set to the 200 range. Measure AC voltage output at each stereo terminal set while adjusting the amp gain. Each of the left and right terminals should read 35.35 volts to get 1250 watts into 1 ohm.

This is the safest and surest way to make sure the subs aren't being overpowered. If, though, once you have set that voltage reading and the subs sound distorted when you connect them back up, you'll have to back the amp gain down slightly until they sound clean. You would do this by ear. That would tell you that the amp is not providing the power it is spec'd at.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

pimpincavy

Silver - Posts: 880

Joined: May 20, 2004

Location: United States

Posted: August 09, 2004 at 5:46 PM / IP Logged

Turn your volume up to the loudest you plan on listening to loudest you plan on ever having it. Then set the gain on your amp to below distortion level, you shouldnt have a problem.

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Amp too powerful

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