Alpine Type-R SWR-1242D Car Subwoofer - Answered Questions & Fixed issues
What is the best amp for one 15" alpine type r?
sub spec 250watts per coil you should be just fine I have 2 typr 15s on orion hcca 2500 1 and it kicks a$$ thats 1000 watts over the rated limits of the subs only shut the amp down once these subs can take a lot more power than they say just use your common sence with the volume and gain levels
11/28/2012 11:40:02 PM •
Alpine Type-R...
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Answered
on Nov 28, 2012
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909 views
I dont how to run the wire on the back of my alpine type r 1242d
you can connect speakers up any way around ,if its one speaker with 4 connections then these extra 2 terminals are often for a continue through to the next speaker along the line ,.just use a small 9v battery and then connect to two terminals to find a bleep as you touch two of the terminals then you know where to put your wires
11/28/2012 11:02:13 PM •
Alpine Type-R...
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Answered
on Nov 28, 2012
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124 views
How do I wire my
check the cables again , and also check cables are working properly or not ..
My type r sub has
hi,
You have to buy a new one because its coil has been burned. If you use tha woofer with the working coil then it can damage the amp. So try to buy a new one.
OK
My speaker cut out and
i think you will be death when you get hold if you managed to burn a speaker out ,Do what i do and thats listern to the engine as then i know if something is about to fall off
I have 8 alpine dvc type r 12s, should i port them
depends what kind of car they are going in and what kind of sound you are going for.
generally speaking ported boxes are louder, if you choose this i would recommend filling box with poly-fill.
non-ported boxes get deeper bass and hit much harder. no matter what set up you choose a good quality box that does not flex is EXTREMLY IMPORTANT. you will want the wood to be at least 3/4" thick and the correct cubic feet.
I'm trying to find the
The subwoofer box ratings for this subwoofer are as follows:
- sealed box volume: 0.57-1.0 cu. ft.
- ported box volume: 0.75-2.0 cu. ft.
What size enclosure (sealed)for Alpine 12"1242D(METAL Music)
12" subwoofer with dual 4-ohm voice coils
Kevlar reinforced pulp cone with Santoprene™ rubber surround
cast aluminum frame with perimeter venting
frequency response: 25-500 Hz
power handling: 200-500 watts RMS (250 watts per coil)
peak power: 1,500 watts
sensitivity: 85 dB
top-mount depth: 7-5/8"
sealed box volume: 0.57-1.0 cu. ft.
ported box volume: 0.75-2.0 cu. ft.
For rock, i actually have 2 seperate 12's in slot port boxes i built facing forward. Facing forward reduces a little resonance and spl, but keeps alot of that annoying rattle off your tag lol
Hope this helps :)
11/21/2010 8:35:44 AM •
Alpine Type-R...
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Answered
on Nov 21, 2010
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1,323 views
How to wire 2 alpine
If they are single voice coil, just hook one up to the amp (bridged) like normal and run a jumper wire from the positive of the sub to the positive of the second one, then do the same for the negative....This will give you a lower ohmage, thus better bass!!!
10/20/2010 12:09:40 AM •
Alpine Type-R...
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Answered
on Oct 20, 2010
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159 views
What is the best way to connect two 4 ohm type-r
Connecting the speakers in parallel is the best route here. Parallel wiring is simply connecting the positive wires together and connecting the negative wires together. Then connect both positive wires to the positive output of the amp and both negative wires to the negative output of the amp. When both 4ohm speaker are connected in parallel the combined impedance is 2ohms. This particular amplifier has a damping ratio of >250 at 2 ohms compared to a damping ratio of >1000 if you connected them in series at 8 ohms. the damping ratio is simply the reduction of power transferred. (For future reference in order to get the maximum power transfer input impedance must match the output impedance.)
What is the best box for 2 ALPINE SWR-1242D
Ported and tuned to around 37-40 hertz. After all displacement the box should be in the 2.2 cubic foot for sub and you will be very impressed. Build it yourself for optimum sound and output.
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