I just won this auction on saturday and I was just wondering if the Sub and Amp are a good match or if there is some glaring flaw that I have missed. I hope there isn't but I just wanted check with you folks and cover all my basses (get it BASSes). Seems like a steal...all that for 200. aight peace.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5763317992&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1
Replies (11)
ssallstar598 on 04/4/2005 00:28:13
Well i looked up the specs on the amp - and if you bridge the speaker at 4 ohms you will get 350 watts RMS and the speaker is 300 RMS so its a really good match
200 sounds pretty decent (i dont know the prices of audiobahn and mtx stuff... im more into kicker JL JBL and infinity but thats just me)
lessismorespl on 04/4/2005 08:37:38
350 wRMS from a 502 Bridged, try more like 500+ wRMS @ 13.8 volts. This amp will easily produce 125X2 @ 2ohms and getting 12.5 volts. I had one back when they first came out, the test sheet from Mitek stated 512 Bridged @ 4ohms. The Type R subs are very well known for their SQ and for $200 you are basically getting the amp for free, providing everything works fine. Get rid of the Q-Logic enclosure, they are garbage, and try to find another Type R 4ohm DVC like this one, that amp will easily drive 2 of them bridged.
Mr._Miyagi on 04/4/2005 09:38:43
What type of enclosure would you suggest getting?
Also, i'm going to stick to one sub, just cuz I don't want to spend too much more money.
lessismorespl on 04/4/2005 10:29:48
The amp would not really match up then, you would want to go w/ a small class D or mono block amp. This is my reasoning here: you have a 4ohm DVC sub and a 2 channel amp, the voice coils can be wired in 2 ways, series to create 8ohm impedance, or parallel to create 2ohm impedance, the amp is not 2ohm stable bridged, and 8ohms would make it over work and probably cause some serious thermal heat build up, especially in that series of MTX amps. You could use one channel w/ 2ohm impedance, but you would be wasting half the amp and underpowering the sub. I would try to find a decent Class D amp, around 300-400 wRMS 2ohms and depending on the sound you are looking for, go with a nice solid sealed enclosure, w/ a little work and the right calculations, you could build a small sealed enclosure out of 3/4" MDF for about $25-$35.
Mr._Miyagi on 04/4/2005 11:57:05
So then, since I already won the auction, am I screwed with this amp? Would it help if I used the amp with the one sub and maybe the two rear speakers or does this not do anything...the sad thing is I'm in AP Phys studying Electricity and Currents and I still can't exactly follow this conversation...
lessismorespl on 04/4/2005 12:13:23
Actually, you could probably sell the amp, but buying another Type R sub 4ohm DVC would be your best option, then build a dual 12 enclosure. I'm certain several of us on here could assist you in building an enclosure, I know I would be willing to draw up diagrams for the enclosure as well as how to wire the subs to a final 4ohm impedance so you can bridge the amp. That amp is agreat buy @ $200, I know Crutchfield has them on clearence for $269.99 right now, so if I was you, i would keep that amp and buy another sub, the Type R Dual 4ohm runs about $199 retail, I have seen them as low as $139.99 for the 4ohm DVC. You could wire one channel to ea voice coil giving the sub about 125-175 wRMS per voice coil, 250-350 wRMS total for the sub. Make sure you run 4 ga wire to that amp and use good solid 4 ga grounds, MTX amps are known for over heating, but in most cases it is due to improper wiring or using the wrong size wire. This amp should definately get 4 ga.
Mr._Miyagi on 04/4/2005 20:36:18
as much as I can follow, you are saying that if I use this set up, it will suck. I understand your logic but the only problem is I am out of money basically, so I can't buy anything else besides maybe material for a box.
Since this is the case, could you suggest the optimal way to go about using this amp and this one sub?
swez on 04/4/2005 21:18:53
Actually, you can bridge the amp to MONO mode and run both coils in series for an 8 ohm load. You will get 50% Wrms power that amp is able to deliver at a normal 4 ohm load. If the amp gets warm, that is normal. However, if you get a thermal protect shut off too many times, adjust amp gain til it is stable.
The other option is to run one coil to each channel. That's a 4 ohm load/channel and safe for the amp. However, you should use an AC voltmeter to balance voltage going to each coil. The amp gain adjustments will help you dial in the matching voltage to each coil.
Note: Most amps can take higher ohmic loads w/o too much trouble. Just less power. Most times, the amp will go thermal at lower than rated ohmic loads.
Plan on getting a matching Type R when you can, then build a new box to house the pair. This system will give you a real nice thump that way.
Swez
Mr._Miyagi on 04/4/2005 22:29:22
one thing I don't get is why adding another sub gives you more power. Quick explanation anyone?
Also, is this going suck no matter how I wire it? Was this a bad purchase?
ssallstar598 on 04/4/2005 23:07:23
Getting another sub will let you wire them each to 2 ohms
http://img8.exs.cx/my.php?loc=img8&image=1dvcparallel1yl.jpg
2 ohms to each channel nets roughly 200 watts per channel for now since you only have one you will have to run it at 8 ohms which the higher the ohm load the more heat the device produces and heat = expended energy therefore half the energy is being burned and half is being used to supply the subs
ask swez before you take any of my advice though (im starting to know more about all of this but for some reason i think i might have suggested something wrong so just wait until he says something)
BUT no it was a good purchase - this is not gonna suck however you wire it, sure it wont net as much power until you have 2 but after you get 2 its gonna be slammin
lessismorespl on 04/5/2005 08:14:14
I think you would be better wiring ea. 4ohm coil to a channel, MTX amps are very well known for under rating their amps, my old 502 was boards tested at 156 wRMS per channel @ 2ohms w/ 13.8 volts. Like swez suggested, wire a coil to ea channel, set the amp on mono, and adjust your gain w/ a DMM(digital multimeter), you will also want to be very careful w/ Thunder EQ adjustment. Another thing MTX amps are known for is thermal heat build up b/c of the power they produce, you can keep that down by using 4 ga power/grounds. As long as the 502 gets the voltage it needs, I have found they do not get as hot. That is one thing Mitek's techs state when you talk to them, almost every one of MTX's amps need 4 ga main to supply the proper voltage.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5763317992&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1
Replies (11)
ssallstar598 on 04/4/2005 00:28:13
Well i looked up the specs on the amp - and if you bridge the speaker at 4 ohms you will get 350 watts RMS and the speaker is 300 RMS so its a really good match
200 sounds pretty decent (i dont know the prices of audiobahn and mtx stuff... im more into kicker JL JBL and infinity but thats just me)
lessismorespl on 04/4/2005 08:37:38
350 wRMS from a 502 Bridged, try more like 500+ wRMS @ 13.8 volts. This amp will easily produce 125X2 @ 2ohms and getting 12.5 volts. I had one back when they first came out, the test sheet from Mitek stated 512 Bridged @ 4ohms. The Type R subs are very well known for their SQ and for $200 you are basically getting the amp for free, providing everything works fine. Get rid of the Q-Logic enclosure, they are garbage, and try to find another Type R 4ohm DVC like this one, that amp will easily drive 2 of them bridged.
Mr._Miyagi on 04/4/2005 09:38:43
What type of enclosure would you suggest getting?
Also, i'm going to stick to one sub, just cuz I don't want to spend too much more money.
lessismorespl on 04/4/2005 10:29:48
The amp would not really match up then, you would want to go w/ a small class D or mono block amp. This is my reasoning here: you have a 4ohm DVC sub and a 2 channel amp, the voice coils can be wired in 2 ways, series to create 8ohm impedance, or parallel to create 2ohm impedance, the amp is not 2ohm stable bridged, and 8ohms would make it over work and probably cause some serious thermal heat build up, especially in that series of MTX amps. You could use one channel w/ 2ohm impedance, but you would be wasting half the amp and underpowering the sub. I would try to find a decent Class D amp, around 300-400 wRMS 2ohms and depending on the sound you are looking for, go with a nice solid sealed enclosure, w/ a little work and the right calculations, you could build a small sealed enclosure out of 3/4" MDF for about $25-$35.
Mr._Miyagi on 04/4/2005 11:57:05
So then, since I already won the auction, am I screwed with this amp? Would it help if I used the amp with the one sub and maybe the two rear speakers or does this not do anything...the sad thing is I'm in AP Phys studying Electricity and Currents and I still can't exactly follow this conversation...
lessismorespl on 04/4/2005 12:13:23
Actually, you could probably sell the amp, but buying another Type R sub 4ohm DVC would be your best option, then build a dual 12 enclosure. I'm certain several of us on here could assist you in building an enclosure, I know I would be willing to draw up diagrams for the enclosure as well as how to wire the subs to a final 4ohm impedance so you can bridge the amp. That amp is agreat buy @ $200, I know Crutchfield has them on clearence for $269.99 right now, so if I was you, i would keep that amp and buy another sub, the Type R Dual 4ohm runs about $199 retail, I have seen them as low as $139.99 for the 4ohm DVC. You could wire one channel to ea voice coil giving the sub about 125-175 wRMS per voice coil, 250-350 wRMS total for the sub. Make sure you run 4 ga wire to that amp and use good solid 4 ga grounds, MTX amps are known for over heating, but in most cases it is due to improper wiring or using the wrong size wire. This amp should definately get 4 ga.
Mr._Miyagi on 04/4/2005 20:36:18
as much as I can follow, you are saying that if I use this set up, it will suck. I understand your logic but the only problem is I am out of money basically, so I can't buy anything else besides maybe material for a box.
Since this is the case, could you suggest the optimal way to go about using this amp and this one sub?
swez on 04/4/2005 21:18:53
Actually, you can bridge the amp to MONO mode and run both coils in series for an 8 ohm load. You will get 50% Wrms power that amp is able to deliver at a normal 4 ohm load. If the amp gets warm, that is normal. However, if you get a thermal protect shut off too many times, adjust amp gain til it is stable.
The other option is to run one coil to each channel. That's a 4 ohm load/channel and safe for the amp. However, you should use an AC voltmeter to balance voltage going to each coil. The amp gain adjustments will help you dial in the matching voltage to each coil.
Note: Most amps can take higher ohmic loads w/o too much trouble. Just less power. Most times, the amp will go thermal at lower than rated ohmic loads.
Plan on getting a matching Type R when you can, then build a new box to house the pair. This system will give you a real nice thump that way.
Swez
Mr._Miyagi on 04/4/2005 22:29:22
one thing I don't get is why adding another sub gives you more power. Quick explanation anyone?
Also, is this going suck no matter how I wire it? Was this a bad purchase?
ssallstar598 on 04/4/2005 23:07:23
Getting another sub will let you wire them each to 2 ohms
http://img8.exs.cx/my.php?loc=img8&image=1dvcparallel1yl.jpg
2 ohms to each channel nets roughly 200 watts per channel for now since you only have one you will have to run it at 8 ohms which the higher the ohm load the more heat the device produces and heat = expended energy therefore half the energy is being burned and half is being used to supply the subs
ask swez before you take any of my advice though (im starting to know more about all of this but for some reason i think i might have suggested something wrong so just wait until he says something)
BUT no it was a good purchase - this is not gonna suck however you wire it, sure it wont net as much power until you have 2 but after you get 2 its gonna be slammin
lessismorespl on 04/5/2005 08:14:14
I think you would be better wiring ea. 4ohm coil to a channel, MTX amps are very well known for under rating their amps, my old 502 was boards tested at 156 wRMS per channel @ 2ohms w/ 13.8 volts. Like swez suggested, wire a coil to ea channel, set the amp on mono, and adjust your gain w/ a DMM(digital multimeter), you will also want to be very careful w/ Thunder EQ adjustment. Another thing MTX amps are known for is thermal heat build up b/c of the power they produce, you can keep that down by using 4 ga power/grounds. As long as the 502 gets the voltage it needs, I have found they do not get as hot. That is one thing Mitek's techs state when you talk to them, almost every one of MTX's amps need 4 ga main to supply the proper voltage.
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