Jim...i need help...

heres what i got
2 15' Rockford Fosgate Power DVC's 4x2 Ohm, 500 RMS peak each coil...

a Fosgate bd1000a1 rated 500x1 4 ohm and 500x1 2 ohm...
ok

i have been told this amp is 1 ohm stable...

would hooking them up in one ohm give me 2000x1?

i guess what im trying to find out is, will this amp be able to put around 500RMS into each voice coil?

how would i hook it up ?

 

The BD1000a1 is rated at 500w rms x1 @ 4 ohm and 1000w rms x1 @ 2 ohm. Asumming it is stable at 1 ohm (I hear that RFs have problems overheating at low impedances) then it would put about 2000w.

The rule is (Roughly!) - if you half the impedance, you double the power.

The big question is whether the amp will be stable and will it melt your car. Maybe a forced cooling system will be required.

 

I don't have a lot of experience with that amp, but if you can keep it cool, you can probably get away with one ohm. Whether it puts out 2k watts is debatable.

------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah

 

I don't have much experience with Rockford Fosgate, but you could also contact them directly. I have done that with both Boston and Memphis and they are more than willing and usually very quick about getting a response to you. They should know what advice to give you since they make both products in your question. Good luck man.

Matt

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irocet@hotmail.com

drive.to/Stang_Kilr

88 IROC-Z -- 350 L-98, 700R4, Flowmaster, K&N, MAF Sceens Removed, Airfoil, March Pullies, Comp Cams Magnum 1.6 Roller Rockers, Bosch Platinum Plugs, Accel 8.8 mm Wires, Hypertech Cap & Coil, Hypertech Chip, Hotchkis Strut Tower Brace, One Loud Stereo!

 

yea well when i bought it off e-bay from some other dealer for $350 for brand new bd1000a1 and $185 for brand new 15' Power DVC's(all still in orig factory plastic and stuff), not from an "authorized" dealer(cuz i dont feel like paying $800-900 retial prices for that amp), they wont answer my questions

punks
heh

 

Rockford will tell you it's not 1 ohm stable. Rockford says that their stereo amps aren't stable into 2 ohms bridged either.


------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah

 

damnit, im gonna need some super god to push these damn DVC's...

 

i would need ONE of these per DVC right?
amp:
Model BD1000a1
Description Power bd1000a1
RMS Power (4 ohms) 500W x 1
RMS Power (2 ohms) 1000W x 1

speaker:
Model RFR2215
Description RFR2215
Nominal Impedence 2 x 4 Ohms
RE (DC resistance in ohms) 2 x 3.6 Ohms
RMS/PEAK Power 1000w rms / 2000w peak


just wire the DVC up to the amp however to achieve a 2 ohm load, and 1000 RMS would power each voice coil 500 RMS right? am i seein this right? or am i a crackmonkey?

[This message has been edited by KlayBuRn (edited March 30, 2001).]

 

It seems to me that you want 500w per voice coil for your subs. Each coil is 4 ohms and the amp will put out 1000w at 2 ohms. Wire the coils in parallel to one amp and each of the coils will get 500w. This is what you wanted? Then get another identical amp to drive the other sub (one amp per sub).

 

You bought what's known as "B Stock". This means that you just inherited somebody elses problems. B stock is merchandise that is refurbished and resold. That's why you got it so cheap. Cross your fingers and pray that you don't have a problem, because if you do you're going to eat it.


------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah

 

i dunno man, this is all new stereo equipment, i mean, its got all the papers, its all still sealed, and the auctions i bought them from said they where not refurnished or nothing...take a look yourself...

i talked to one of the guys, he says he dont even run his shop anymore, they went all internet cuz its cheaper and stuff...

i dunno man...all i know, is thats what it said, granted its e-bay, but its still all in orig packaging..would these items come with the papers from rockford and **** too ?

the stereo equipment ive gotten all appears new, and stuff...

 

Here are a couple alternatives for wiring it, I don't know which would be best or even advisable, I don't know anything about dual voice coil drivers, maybe somebody else will comment. Both ways would be a 4 ohm load. I am assuming from your original post each voice coil is 4 ohms. vc1 and vc2 are in speaker 1, vc3 and vc4 are in speaker 2.

Method 1 - Connect the voice coils on each speaker in series, connect the speakers in parallel.
lead 1 from amp+ to vc1+
lead 2 from vc1- to vc2+
lead 3 from vc2- to vc3-
lead 4 from vc3- to amp-
lead 5 from vc3+ to vc4-
lead 6 from vc4+ to vc1+

Method 2 - Connect the voice coils on each speaker in parallel, then the speakers in series.
lead 1 from amp+ to vc1+
lead 2 from vc1+ to vc2+
lead 3 from vc1- to vc2-
lead 4 from vc1- to vc3+
lead 5 from vc3+ to vc4+
lead 6 from vc3- to vc4-
lead 7 from vc4- to amp -

 

Does the Serial Number start or end in "Z"?


------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah

 

None of them have Z's in them, they are all numbers...

good or bad ?
im gonna scan some of the stuff i got and post it
heh

 

Here's your specs Klayburn.
All measurements @ 14 volts unless otherwise specified.
Frequency Response (4-ohm IHF Load, 60 Hz Ref. crossover @ highest setting): +0 dB, –3 dB @ 244 Hz
L/R channel error, max deviation 20 Hz to 20 kHz: N/A
Signal-to-Noise Ratio (Below Rated Output, “A” weighted): –84.6 dB
Distortion at Rated Output @ 60 Hz: 0.35%
@ 500 watts
Output Power (Resistive) (4 ohms @ 60 Hz to 1% THD+N): 710 watts @ 14 volts; 589 watts @ 12.8 volts; 374 watts @ 10.5 volts
Output Power (Resistive) (2 ohms @ 60 Hz to 1% THD+N): 1135 watts @ 14 volts; 919 watts @ 12.8 volts; 594 watts @ 10.5 volts
Output Power (Reactive) (4-ohm IHF Load @ 60 Hz to 1% THD+N): 762 watts
Output Power (Reactive) (2-ohm IHF Load @ 60 Hz to 1% THD+N}: 1164 watts
Crosstalk @ rated output, 20 Hz to 20 kHz: N/A
Damping Factor @ 100 Hz: 73
Voltage for Rated Output: 104 mV to 2.3 volts
Idle Current Draw: 1.4 amps
Current Draw @ 1/3 Maximum Power: 35.6 amps @ 377.6 watts
Efficiency @ 1/3 Maximum Power: 76%
Power-Up Noise: 48.5 dB SPL
Power Down Noise:

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'87 Trans Am:
(Engine)
305 TPI
160 Degree Thermostat
TB Bypass
Accel 300+ 8.8 Racing Wires
Accel Super Coil
Bosch Platinium Plugs
Custom Ram Air with K&N
Removed Emissions Equipment
(Stereo)
Kenwood Excelon