difference between dvc and svc?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=76139
Printed Date: April 20, 2024 at 6:52 AM
Topic: difference between dvc and svc?
Posted By: dirt_racer_99
Subject: difference between dvc and svc?
Date Posted: April 12, 2006 at 5:47 PM
so i bought 2 subs and an amp off of ebay and well they sent me the right amp but the wrong subs... instead of a svc they sent me a dvc.... so my question would be is what difference in the sub is there? also the box i have only has one negative and one positive per side of the box so do u guys still think i can run these subs in that box or not??? and i dont know think i can put a 2 ohm load on the amp with the dvc subs so any ideas would help ALOT
Replies:
Posted By: bmwpwner
Date Posted: April 12, 2006 at 6:11 PM
if you got dvc rather than svc you can wire them several ways. if you have a 2 channel amplifier that is 2 ohm stable then you can run a jumper from the negative of one coil to the positive of the other coil (do this for each woofer) and then use the left over pos and neg to the amp. if you do this on each woofer that should put each woofer into an 8 ohm load (given that each voice coil is 4 ohm coils). then you can mono both woofers into the amp and get a 4 ohm load at the amp and with the amp in the bridged mode that will actually put the woofers at a 2 ohm (inside the amp) where the amp and woofers are wired for the optimum performance. of course, you should double check your impedance before hooking it to the amp. good luck and hope this helps. ------------- "I cannot teach anybody anything, I can only make them think."
-Socrates-
Posted By: dirt_racer_99
Date Posted: April 12, 2006 at 6:22 PM
well the amp is a mono and and at 4ohm its 500watts and at 2ohm its 850 watts so i bought the 4 ohm svc that would give me the 2 ohm load but now with the dvc i can only get a 4ohm load i belive
Posted By: bmwpwner
Date Posted: April 12, 2006 at 7:12 PM
ok, if the amp is mono then just use one voice coil from each woofer and that will give you a 2 ohm load at the amp. good luck and hope that helps. ------------- "I cannot teach anybody anything, I can only make them think."
-Socrates-
Posted By: dirt_racer_99
Date Posted: April 12, 2006 at 7:25 PM
but by not using one voice coil wont that mess the sub up??? i mean i dont wanna break anything or blow it up
Posted By: dwarren
Date Posted: April 12, 2006 at 7:38 PM
First of all what are the voice coil configurations of the subs? Are they dual 4 or dual 2 ohm subs?
-------------
Posted By: dirt_racer_99
Date Posted: April 12, 2006 at 7:44 PM
they are dual 4 ohm 1000w pioneer subs and the amp is a kenwood 1700w mono amp that is 500w 4 ohms and 850 2 ohm
Posted By: dwarren
Date Posted: April 12, 2006 at 7:48 PM
So dual four... here is the option I'd use. Present a 4 ohm load to the amp and call it a day. Although you could wire it down to a 1 ohm load, you instantly run the risk of damaging the amp, and what for? 350 measly watts, not worth it. 
-------------
Posted By: dirt_racer_99
Date Posted: April 12, 2006 at 7:55 PM
yeah i iknow if it comes down to it ill either try to get them to exchange the subs for free sence it was there mistake or ill just go with that setup but is there any way to create a 2 ohm load on the amp with the subs i have
Posted By: dwarren
Date Posted: April 12, 2006 at 7:57 PM
Nope.
-------------
Posted By: dirt_racer_99
Date Posted: April 12, 2006 at 8:07 PM
Option 1 (parallel) = 2 ohm load
Voice coils wired in parallel
Recommended Amplifier: Stable at 2 or 1 ohm mono |  |
Posted By: dirt_racer_99
Date Posted: April 12, 2006 at 8:09 PM
do u think i can use this set up on one of the amp terminals (+ -) and the same setup with the other sub on the other set of terminals. would that create a 2 or 4 ohm load??
Posted By: geepherder
Date Posted: April 12, 2006 at 8:48 PM
What you're proposing to do is create a 2 ohm stereo load. Electrically, this is no different than the 4 ohms bridged diagram that dwarren posted.
-------------
My ex once told me I have a perfect face for radio.
Posted By: dirt_racer_99
Date Posted: April 12, 2006 at 10:21 PM
ooo ok i wasnt sure so i was just making sure im still new to all this.... so ur saying that mine is 2 ohm stero and his is 4 ohms bridge?? does that create the same amount of power or no?
Posted By: stevdart
Date Posted: April 12, 2006 at 11:51 PM
Bottom line is this: When you chose the combination amplifier / subwoofers, you already figured power requirements and impedance load you wanted to put on the amp. Getting DVC's instead of SVC's threw you into a world of doodie. Fun with fleabay. Return them and get the right subs. EDIT: haha, the word "doodie" comes up now... ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: haemphyst
Date Posted: April 13, 2006 at 8:59 AM
OK... Here's the BRUTAL truth:
dirt_racer_99 wrote:
do u think i can use this set up on one of the amp terminals (+ -) and the same setup with the other sub on the other set of terminals. would that create a 2 or 4 ohm load??
1 ohm (all in parallel) or 4 ohm (series/parallel). You already mentioned that your amp is a mono amp. This means ONE channel. You could have 800 speaker terminals on the amplifier and it will still be a mono amp.
No matter HOW or WHERE you connect the woofers you got, you can ONLY get a 1 ohm (unsafe load) or a 4 ohm load (perfectly usable) on the amplifier. My STRONG suggestion (already posted on the first page): wire the woofers to 8 ohms (series) then parallel wire the woofers to the amp for a 4 ohm load. You WILL NOT notice the difference in power produced, I promise you this right now. You are looking at LESS than 2dB max output difference (3dB is noticeable) between a 4 ohm load and a 2 ohm load. Install your gear, connect the things for a 4 ohm load, and get on with your life... 
Your amp sounds like a cheapie anyway, and it will THANK you for providing it with a 4 ohm load by running cooler, with lower distortion and better damping, anyway. Now, if it is REALLY worth your time and energy, contact your seller, pay shipping back to him, pay shipping again back to you, waste weeks of your time, your energy, your money... 4 ohms is sounding better and better to me already.
dirt_racer_99 wrote:
but by not using one voice coil wont that mess the sub up??? i mean i dont wanna break anything or blow it up
You wont. On the top of the front of the Car Audio Forums page is a sticky regarding running one coice coil on a DVC woofer. Good read. Check it out. ------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: stevdart
Date Posted: April 13, 2006 at 11:31 AM
OK, I concur. :)
-------------
Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: dirt_racer_99
Date Posted: April 13, 2006 at 4:41 PM
hey thanks for ur guys advice its really helping me but i have one more question if i ran the subs in a series/parrelle wont i have to drill holes in the middle of the sub box (bc i have a divider between the 2 subs) in order to get the subs hooked to each other?? i was thinking bout sending them back but by the time i noticed they were dvc... i was so happy the came i didnt read the box ... i already had the subs out un rapped and sitting on my table so i didnt think they would take them back anyways
Posted By: stevdart
Date Posted: April 13, 2006 at 4:54 PM
You know you have to drill the holes to get a wire from one chamber to the other. Put the wires through and label each end of the wires. Seal the holes with caulk. Now if you pull the subs out of the box for a changeover in the future you will know how to use those wires more easily. I use black 16 ga. primary wire for all the wiring but I use colored electrical tape near the ends to show how they should be used. For instance, a series connector wire would have red tape on one end and black tape on the other. You know what I mean.
-------------
Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: dirt_racer_99
Date Posted: April 13, 2006 at 5:01 PM
alright thats what i figured i just wanted to make sure before i go drilling the box but im either going to do that or im going to try to just hook up one coil and wire them to creat a 2 ohm load and see which sounds the best to me
Posted By: stevdart
Date Posted: April 13, 2006 at 5:08 PM
dirt_racer_99 wrote:
or im going to try to just hook up one coil and wire them to creat a 2 ohm load and see which sounds the best to me
If you do that, the power capacity for each sub will be one half of the rated power. If each sub is rated at, say, 300 watts, then the power total for two subs, using only one voice coil on each one, will be 300 watts. Does the amplifier put out 300 watts at 2 ohms? That's the question you have to answer, which is why I asserted above that you probably had power vs. power handling already figured into the equation when you originally chose the SVC subs. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: geepherder
Date Posted: April 13, 2006 at 5:15 PM
Oops, I missed the part about it being a mono amp. Thanks for the correction Dave. ------------- My ex once told me I have a perfect face for radio.
Posted By: dirt_racer_99
Date Posted: April 13, 2006 at 6:13 PM
the amp is rated at 1700w max..... 950w at 2ohms and 500 w at 4ohms... which is why i wanted the subs to make a 2 ohm load on the amp... the subs are 1000w max and 500w rms... so sence i have 2 ur saying my rms would only be 250 per sub??? but the svc subs r rated the exact same as the dvc... which confuses the hell outta me
Posted By: forbidden
Date Posted: April 13, 2006 at 7:46 PM
Yes that is what he is saying. The subs power handling is the same for either the svc or dvc sub. In the case of the svc there is only one winding, the dvc has two, thus the power is spread evenly between the two coils. So you do indeed have a power handling of only 250w per sub by using one coil only.
-------------
Top Secret, I can tell you but then my wife will kill me.
Posted By: jazzcustom131
Date Posted: April 13, 2006 at 8:19 PM
I'm not saying it doesn't hold potential for change, but power and sound are two different things. A 2 ohm load won't "sound" any better than a 4 ohm load. Volume may be different (i.e. my cousin's 1000 watt 15" is volumetrically louder than my 10" sub) even though i'm wired at 2, and he at 4. Also, you're dealing with electrical pieces here. The more power you force from it, the less the life. Not to say a 2 ohm load will die next week, where a 4 will live a month, but as a person that repairs electrical equipment, I can't help but mention it. Stick with Haemphyst, Stevdart and Forbidden. 9 times out of 2, they'll put you on the right track ------------- Greed is for amateurs.
Disorder,chaos,anarchy now THAT is fun!!
|