Hey all. This is for a fellow Tiburon owner who needs some help.

She got a Alpine HU (dont know part #) and 2 12" Type R Alpine subs. Question is, does anyone know whether she should go sealed or vented with the box? On the manual for the subs.. it says Sealed box recommendations are .70-1.0 is that small for 12's ? But it also says sealed/ported/bandpass are recommended box types, but no volume recommendations for the other two.

Amp--- any suggestions on the amp she should get, or amps? The peak power is 1000w / 300w RMS for each sub. She is looking to spend about $700 for amp or amps.

Thanks

Peace

 

Well,the sealed enclosure volumes they state are the miniums,for one sub.So for 2 you need a min internal vol of 1.4 cuft,which is kinda big.

If you go with ported or bandpass,the internal volumes will be much greater.

Ported/BP enclosures are very efficient and can play down deep and loud,provided the enclosure is designed correctly.

Sealed enclosures are not as efficient,but they can play deep,tight,and accurate bass and don't need as much internal vol.

 

As for amps,I personally like Alpine and Fosgate.

She could use 2 Alpine T420 2ch amps which are rated at 340 WRMS.Crutchfield has these for $400/ea

Or she could go with 1 Fosgate 1000bd mono amp.It is rated for 500Wrms @4ohms and 1000Wrms @ 2 ohms.Crutchfield has these for $700

If it were me,I'd go with the mono Fosgate,just to conserve on mounting space.Not to mention their amps are freaking awesome!!!

 

I would put them in a sealed box. The smaller the box the more power they can handle. So if your planning on nailing the subs with 1000 watts put them in the smallest size sealed box recommended.
A bandpass or ported box wont have as accurate of sound as a sealed.
As for an amplifier i always say audiobahn, but there are a lot of other great brands out there. It really depends on the impedence of your subs. Those type R subs come in 2 and 4 ohm dvc's. So dependent on what kind of subs you have would depend on my amp recomendation. It would also help other people give you a recomendation. Dual 2 ohm subs would need an amp to run at either 1/2 ohm or 2 ohm. Dual 4 ohm can run 1 or 4 ohm loads. SO it really depends on what your subs are.

 

That is not a correct statement!! The smaller the internal volume,the less power the subs will be able to handle at low frequencies.A small enclosure will reproduce mid-bass much better,and will also be very booooomy and muddy sounding.


I agree with that to a point.It really depends on how well the ported or band pass enclosure is designed and built.

Not quite.You need the amp to handle 1 ohm or 4ohms.If you wire a dual 2ohm sub in parallel,you will have a total impeadance of 2 ohms.Not 1/2 ohm.If you wire in series,you will have 4 ohms total.

Again,not quite. Dual 4 ohm in parallel will give you 2 ohms total.In series you will have 8 ohms.

You should also realize that by wiring subs,or voice coils, in series also reduces their efficiency.

Most amps when bridged can only handle a 4 ohm load.Some can handle 2 ohms or less.Make sure you read the spec's before you configure the subs to the amp.

[ December 09, 2002, 05:16 PM: Message edited by: MADTIB ]

 

I dint say parallel. I was assuming that since he was going to spend in the $700 range for an amp he was purchasing a good quality one that can handle a low ohm load.

No they can handle a 1 or 4 ohm load.
_------------____________---------________-
I think you are thinking these subs are Single voice coil subs, then a single 4 ohm voice coil would handle a 2 or 8 ohm load.
THe subs BiGBoi is refering to are DVC subs so please refer to these pictures for what the proper wiring should be
A:
B:
C:

Or if they are 4 ohm DVC
A:
B:

[ December 09, 2002, 06:08 PM: Message edited by: MaDHatteR ]

 

no need to argue guys.. and it isnt for me, its for someone else..

 

I understand completely.The remarks I made was under the assumption we were talking about dual voice coil subs.

If you have,for example,1 DVC rated at 4 ohms per coil,you need an amp that can handle a 2ohm load.The other wiring option is to put the coils in series which will give you 8 ohms.8 ohms is nothing to be concerned about as far as the amplifiers safty.You just won't get the maximum power transfer from the amp.

Likewise,if you have 1 DVC that has 2 ohm coils,you will need an amp that can handle a 1 ohm load.1 ohm is what you will have by wiring the coils in parallel.If in series,you will have 4 ohms.And of coarse any amp will handle that fine.

DVC subs are basically 2 subs in one.You have to wire the coils together in parallel or series,to basically make it 1 sub.You could power only 1 set of coils,but what is the use in that?? You could also power each set of coils with 1 amp channel,but that is highly un-recommended.

 

That last Fosgate wiring scheme is one that I don't recall ever seeing.

Wow!! Learn something new every day!!

 

No,on second thought I have seen that before.Duh!! That's just series-parallel.

Sorry,it's been a long day at work.