canuckerjay

I have an old MTX blue thunder 300.2. It gives all 600 watts with a 2 ohm sub (as I understand it).

I picked up two 10" type R SWR-1022Ds (2 ohm models) .
But will the amp see a pair of 2 ohm subs? Or should I have picked up the 4 ohmmodels? Getting confused trying to figure out the implications of DVC subs

Thanks

BigRedGuy

iTrader: (11)

Wire the coils in the drivers in series and the drivers in parallel.....this will give you a net 2ohm load....couldn't locate a spec sheet for that model# amp, as long as it will do a 2ohm mono load you will be fine. If it is the Pro300x2 it will only do a 4ohm mono load safely. You could run one of your subs on that amp but loading it down with the second sub may burn up the amp if you're not very careful with the gain control....

Verify the exact specs for the amp before you hook up both subs, if you really want to use those 2 subs you definitely need a 2ohm mono stable amp to run them. On a brighter note if it is the 300x2 it will make a great amp to run a set of components in your front stage....

HTH

canuckerjay

It is the Pro 300.2; only it's a different heat sink as pictured here:
http://carphotos.cardomain.com/ride_images/3/1999/2141/29996070041_large.jpg

Thanks for the response, but I'm facing a learning curve with things like ohms, DVC, stable/unstable, etc.

I used to have two 4 ohm Boston Acoustics running off that amp with plenty of power to spare. Always regretted buying them cause I liked that amp, but half its power was lost on those subs:

RMS Power measured at 12.5 Volts DC:
150 watts x 2 into a 4 ohm load with less than 0.05% THD+N
300 watts x 2 into a 2 ohm load with less than 0.1% THD+N
600 watts bridged into a 4 ohm load with less than 0.1% THD+N

So, this time around I got the 2 ohm SWR 1022Ds.

Could you explain in simple terms (not hating - just trying very hard to understand electrical jargon) why you feel that amp won't work?

I really need to know if the amp and subs are incompatible. If so, I have two options then:
Buy a new amp or sell the subs on Kijiji and buy the 4 ohm models.

If that's what I've got to do, anyone have a suggestion as to which I should replace?

Allan74

iTrader: (-1)

1) Google "Ohm's Law"
2) Keep Subs and find a 1ohm stable 2 channel or a 2 ohm stable monoblock (you could use more power anyways).
3) Keep Amp and buy 4ohm+4ohm versions.

Option #1 is the most important point to start with, essentially helping you to understand why/how.

lincoln1993

what you doing with the bostons?

canuckerjay

They're for sale.
2 Boston Acoustics 10” Competitor Series 1000 Subs for sale, along with the sealed enclosure.

Both subs are 4 ohms, and are designed to go in a sealed box.

original cartons and manuals for the subs are available. Specifications can be found here:

http://www.bostonacoustics.com/assets/bostonmobile/manuals/CarSubMan.pdf

The enclosure is made from ½” MDF. Exterior dimensions are below:

H: 13 5/8”
W: 30 ½”
D: 13 3/8”

Asking $200 or best offer.

canuckerjay

I take it that my learning curve is obvious. I've tried numerous times to comprehend ohm's law, and never wind up getting it (not my area of strength). I get that it's like a river -- the obstacles impact the flow. Beyond that - I'm lost. Thanks for the patience.

If I were to go for an amp, any recomendations on brand/model?? I've been out of stereos for 10 years or so.

From back then, I've got a RF 200.2 i bought in 1997, that powered 2 6" Type R components and 2 Type R 6x9s. I thought it was produced well.

And I picked up the MTX Blue Thunder Pro 300.2 used at the same time, cause of its reputation.

So that's what I'm used to. I can't go dropping $800 or so on an amp, but I'm not interested in anything below what I'm used to.

So if you have any recomendations on what I should buy, Could you recommend? And what do you think I'd be looking to pay new or used?

Thanks a lot

Mr.DatSubishi

Easy way to understand VC wiring is;

If you run parallel on DVC subs, +to+, -to-, you half the impedance.

If you run series, use +from one VC -from other VC and jump the two remaining terminals Together you double impedance.

U can also series parallel wire, eg. run a DVC 2 ohm sub in series to get 4ohm. Run the other the same. And then take the +and- from each terminal cup together to halve the impedance. You end up with 2 ohms

Or you can parallel inside the box and series outside the box for the same result.

Allan74

iTrader: (-1)

TERRIBLE advice to leave with someone who doesn't even understand Ohm's Law to begin with. Remember, the example you left ONLY WORKS USING 2 DRIVERS OF EQUAL IMPEDANCE.

Care to explain to him what wiring an 8ohm and 4ohm driver together in parallel yeilds ? .....lol

Mr.DatSubishi

We are talking about wiring subs here. And a basic explanation of how ohms law applys in that situation.