I used option number 2 in this diagram to wire two DVC AW1251Ts up to a Coustic 801DB(400rms@4ohms).
here the link-
http://www.crutchfieldadvisor.com/learningcenter/car/subwoofers_wiring.html?subs=2&impedance=DVC4x2
I dont have a wattage tester but my voltometer has right on the spot 14 volts.
The amp's specs say 400 x 1 @ 4 ohms = 400RMS
The wiring diagram says 4 ohms x 2.
What does the " x 2" part mean in the diagram?
With option number two wired into the amp, how many watts are the subs receiving.
Thanks for the help and sorry if i'm confusing anyone, will clarify if needed.
Daniel
Replies (9)
Victor on 11/13/2004 15:41:34
do u just wanna know how much power ur subs get.. or do u wanna gather some knowledge on how to calculate and know how much power u get.. and..how different subs can be wired to reach a desired impedence and how it affects the overall performance??
lemme know so that i know what u r actually looking for..
anyways if u use option 2 then ur subs will be gettign a bit less than 200wrms each... this wont give the desired result as i feel its not giving what the subs need to perform at their best..i feel its a underpowered sub system.. each of those subs should get something near 350wrms ... i aint saying that they may not be sounding well.. but it just wont exploit the sub to their fullest...and since your amp is not 1 ohm stable you wont be able to wire it as per option 1..
comments...??
Victor...
swez on 11/13/2004 20:21:34
"What does the " x 2" part mean in the diagram"?
I means you have two 4+4 coils on each sub. Another way to state it would be 4 ohm coils x 2. Same thing.
The wiring digram choice for this amp is correct for these subs. The best you can do on this amp is a 4 ohm load as the amp is not 1 ohm stable. So, even though the amp is capable of 800 RMS @ 2 ohms, we get 50% of that at 4 ohm loads. It will still sound pretty good. But not drive the subs to full potential when wired this way.
A 200 watt per sub power source is not all that bad, but underpowering the subs here. They are rated at 400 RMS per sub, very high efficiency (92.1 dB @ 1w/1m). In short, the efficiency will make up for some SPL losses when compared to a typical sub with an eff., rating of 88 or less. These are more SPL subs than SQ. No surprise there huh? The only SQL sub Bahn makes are the Alum series. But, these are 6+6 DVC's.
The best choice for this amp on Bahn subs would be the AW122T. These are 4 ohm SVC's, 550 RMS (Natural Excursion series). Here, you get a perfect 2 ohm load.
Have fun,
Swez
danielm87 on 11/13/2004 20:36:36
Eh thanks Swez i'll check out some AW122Ts.
Victor, i pretty well have some knowledge on how to calculate power, just wondering how the setup was, and now i know from Swez that the subs aren't getting enough power. But i'd have to say, they sound pretty darn good.
So, the two options on the page i showed you are the ONLY ways to wire them up? B/C if there was another way, maybe bridging them, they could get anough power? This sorta stuff is my weak point so bear with me.
Daniel Myers
danielm87 on 11/13/2004 20:42:36
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=48613&item=5730082631&rd=1
Lookee there how bout that one?
So Swez, you'e saying if i get two AW122Ts, could i wire them @2 ohms, delivering around 400rms a peice?
uochronos on 11/13/2004 20:48:29
yep thoughs look like the ones swez was talking about and 2 of those wired together would net a 2ohm load if wired properly.
Chronos
danielm87 on 11/13/2004 20:50:05
So theres no way to get a 2 ohm load on those 4ohm DVC subs?
uochronos on 11/13/2004 21:07:36
nope. 4+4 is either 8 or 2 then that is either 16,4,or 1ohm.... noway to get 2ohm load with 4+4ohm DVC subs.
danielm87 on 11/13/2004 21:11:51
Alright, this post is thru, thanks for the help!
swez on 11/14/2004 11:27:15
There are 2 choices in the Natural Excursion Series and one in The Flame Series that will work for you. They are all 4 ohm SVC coils. A pair of these in parallel will net the magic 2 ohm load you desire.
The AW120T, 121T 122T are all adequate to your needs. These are all rated at 500-550 watts RMS per sub.
Swez
here the link-
http://www.crutchfieldadvisor.com/learningcenter/car/subwoofers_wiring.html?subs=2&impedance=DVC4x2
I dont have a wattage tester but my voltometer has right on the spot 14 volts.
The amp's specs say 400 x 1 @ 4 ohms = 400RMS
The wiring diagram says 4 ohms x 2.
What does the " x 2" part mean in the diagram?
With option number two wired into the amp, how many watts are the subs receiving.
Thanks for the help and sorry if i'm confusing anyone, will clarify if needed.
Daniel
Replies (9)
Victor on 11/13/2004 15:41:34
do u just wanna know how much power ur subs get.. or do u wanna gather some knowledge on how to calculate and know how much power u get.. and..how different subs can be wired to reach a desired impedence and how it affects the overall performance??
lemme know so that i know what u r actually looking for..
anyways if u use option 2 then ur subs will be gettign a bit less than 200wrms each... this wont give the desired result as i feel its not giving what the subs need to perform at their best..i feel its a underpowered sub system.. each of those subs should get something near 350wrms ... i aint saying that they may not be sounding well.. but it just wont exploit the sub to their fullest...and since your amp is not 1 ohm stable you wont be able to wire it as per option 1..
comments...??
Victor...
swez on 11/13/2004 20:21:34
"What does the " x 2" part mean in the diagram"?
I means you have two 4+4 coils on each sub. Another way to state it would be 4 ohm coils x 2. Same thing.
The wiring digram choice for this amp is correct for these subs. The best you can do on this amp is a 4 ohm load as the amp is not 1 ohm stable. So, even though the amp is capable of 800 RMS @ 2 ohms, we get 50% of that at 4 ohm loads. It will still sound pretty good. But not drive the subs to full potential when wired this way.
A 200 watt per sub power source is not all that bad, but underpowering the subs here. They are rated at 400 RMS per sub, very high efficiency (92.1 dB @ 1w/1m). In short, the efficiency will make up for some SPL losses when compared to a typical sub with an eff., rating of 88 or less. These are more SPL subs than SQ. No surprise there huh? The only SQL sub Bahn makes are the Alum series. But, these are 6+6 DVC's.
The best choice for this amp on Bahn subs would be the AW122T. These are 4 ohm SVC's, 550 RMS (Natural Excursion series). Here, you get a perfect 2 ohm load.
Have fun,
Swez
danielm87 on 11/13/2004 20:36:36
Eh thanks Swez i'll check out some AW122Ts.
Victor, i pretty well have some knowledge on how to calculate power, just wondering how the setup was, and now i know from Swez that the subs aren't getting enough power. But i'd have to say, they sound pretty darn good.
So, the two options on the page i showed you are the ONLY ways to wire them up? B/C if there was another way, maybe bridging them, they could get anough power? This sorta stuff is my weak point so bear with me.
Daniel Myers
danielm87 on 11/13/2004 20:42:36
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=48613&item=5730082631&rd=1
Lookee there how bout that one?
So Swez, you'e saying if i get two AW122Ts, could i wire them @2 ohms, delivering around 400rms a peice?
uochronos on 11/13/2004 20:48:29
yep thoughs look like the ones swez was talking about and 2 of those wired together would net a 2ohm load if wired properly.
Chronos
danielm87 on 11/13/2004 20:50:05
So theres no way to get a 2 ohm load on those 4ohm DVC subs?
uochronos on 11/13/2004 21:07:36
nope. 4+4 is either 8 or 2 then that is either 16,4,or 1ohm.... noway to get 2ohm load with 4+4ohm DVC subs.
danielm87 on 11/13/2004 21:11:51
Alright, this post is thru, thanks for the help!
swez on 11/14/2004 11:27:15
There are 2 choices in the Natural Excursion Series and one in The Flame Series that will work for you. They are all 4 ohm SVC coils. A pair of these in parallel will net the magic 2 ohm load you desire.
The AW120T, 121T 122T are all adequate to your needs. These are all rated at 500-550 watts RMS per sub.
Swez
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