sub wiring advice

[RyanSaxo]

i asked this question a while ago and got some good responses...

but i'm still not convinced i have wired my sub correctly. :)

so.... here goes.

amp:

FLI Loaded 450s Amplifier 2 Channel

4 ohm stereo : 2 x 100 watts RMS
2 ohm stereo : 2 x 115 watts RMS
4 ohm mono : 1 x 225 watts RMS
2 ohm mono : N/A
Max power : 450 watts
Frequency response : 20Hz – 20KHZ
SNR : 90dB
THD : 0.2%
Bass boost : 0 – 12dB
HPF : 45hz – 300Hz
LPF : 45Hz – 300Hz

Note: Single Sub with Dual Voice Coil, hence 2 sets of connections for one sub.

Sub:

DB Audio Raptor12 DVC

# 1100W RMS 12" Dual Voice Coil Subwoofer
# Textured Injection Molded Poly Cone
# 2" 4 Layer KAPTON Voice Coil
# Custom CONEX spider
# Chrome basket
# bumped and vented back plate
# magnet size 11" wide
# magnet size 5" 3/4'
# Recommend enclosure:

* Seal: 1.1 cu.ft @ 48Hz, 1.5 cu.ft @ 44Hz
* Vented: 1.5 cu.ft @ 37 Hz

It is in a sealed sub box.

currently it is wired up like this:

http://i200.photobucket.com/albums/aa305/RyanSaxo/Ampspeaker2.jpg

it is quite loud... on about halfway gain i think?

but when i had it on loud recently, the sub stopped working, the amp wasn't on... i thought i had blown it blah blah.
but when i turned it on 30mins later it worked fine...

i know there is alot of problems to do with the ohm's being correct etc.

i'm also only using half the amp by the looks of things? should i be using the other channel?

can anyone show me the best way to wire it up on the image below?

http://i200.photobucket.com/albums/aa305/RyanSaxo/Ampspeaker1.jpg

and am i getting the best from the speaker with that amp? i suspect not.

thanks for any help or advice guys!

[RyanSaxo]

suger wrong section

how did i manage that?

MODDDS :) save me :)

[marcusd]

http://i717.photobucket.com/albums/ww179/marcusd83/Ampspeaker1.jpg

how mine is not same brand tho

and wrong wrong wrong section

[kill_switch]

if your amp aint on then check ur earth lead rem and power

[Mikol]

marcusd's diagram is win.

Your amp will be angry at you for wiring it the way you have.

[RyanSaxo]

but i only have one set of connections on the sub box...?

do you appreciate it is one sub with dual connections? or have i been unclear and lead you to belive it is two subs?

[Mark51]

Moved.

[davidandrews5343]

but i only have one set of connections on the sub box...?

do you appreciate it is one sub with dual connections? or have i been unclear and lead you to belive it is two subs?

One sub with dual connectors?? I think u need to get real pics up, as the one u posted shows two subs with two inputs

[RyanSaxo]

it was the only picture on the web i could find.

the speaker has 2 connections due to it being dual coil.

just want to know how to wire them to get the correct ohm's etc.

[RyanSaxo]

on here:

http://www.bcae1.com/spkrmlti.htm

halfway down, the way i have wired it...

"This image shows the DVC driver with both voice coils wired in parallel. This presents a 2 ohm mono load to the amplifier which may damage most amplifiers. "

does this mean i'm asking for trouble with my amp?

hense it maybe turning off that time?

how would anyone suggest it be wired?

[RyanSaxo]

bumpo. any clever clogs know what they're talking about?

i'm wondering if i need to source a new amp to make the most of this...

hmmmmm

[jdr]

thanks for this man, this helped me get to 2ohms

[marcusd]

the link you posted is useless then as the link shows 1 amp ans again 2 subs.
surely if u have 1 amp and 1 sub you wire it like normal + to + - to - and it will work. as for it cutting out could be rubbish ground or it getting too hot or it could be faulty.
actual pics would help or try explaining a bit better

[chinkostu]

wire it up with one channel to each set of connectors. its all to do with impendance, you may be overloading the amp as it'll be at, 2ohms? but in mono, as its on one channel!

[lukee_VTR]

if you have one sub with dual connections, you just simply use all four connections to 2x + and 2x - on your amp.

Also a 450w amp is really not ideal for a 1100W sub. The RMS on the amp will probably only be 300w so its under spec'd mate.

[tokyodrifte]

That amp will die one day regardless of how you wire it

[lukee_VTR]

That amp will die one day regardless of how you wire it

indeed

[coalpoolwalla]

http://a248.e.akamai.net/pix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/1DVC_2-ohm_2ch.jpg

but whats the sub?
dual 4ohm or dual 2ohm??

but look at the top of the pic anyway "one 2ohm DVC sub, bridged 2 channel amp:4ohm load" so your amp should survive anyway

[RyanSaxo]

http://a248.e.akamai.net/pix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/1DVC_2-ohm_2ch.jpg

but whats the sub?
dual 4ohm or dual 2ohm??

but look at the top of the pic anyway "one 2ohm DVC sub, bridged 2 channel amp:4ohm load" so your amp should survive anyway

i dont know what the sub is.... guess it doesnt matter?

but the amp spec say's n/a against 2 ohm mono? which i belive is how i wired it.

your above image however shows it to be 2ohm at the sub but 4ohm at the amp.... much more ideal

i think that could be the solution then??

the amp isn't faulty, used it for years without a dvc sub, and the wiring is fine.... think the reason it cut out could be to do with the ohm's being too low for the amp!

[saxojh]

Your first wiring diagram was correct assuming the sub is dvc dual 4 ohm. If its dual 2 ohm. The way you are wiring it will be 1 ohm and it will be damaging the amp. Running a sub at 2 ohms when your amp spec says it can handle 2 ohms is really not a problem. The only probelm with your top wiring diagram is that the negative isnt bridged. What you need to do is move the negative across to the other channel. + from 1 channel through the coils and back through the negative on the other channel.

Jason

[tokyodrifte]

Thing is, I bet you have it turned up full gains on the amp to get a bit of sound out of it, This will most probably be sending a clipped signal possibley you can kill your subwoofer and kill your amp

[saxojh]

Why do you bet that oh let me guess your the only one who can set up a system properly.

[RyanSaxo]

Thing is, I bet you have it turned up full gains on the amp to get a bit of sound out of it, This will most probably be sending a clipped signal possibley you can kill your subwoofer and kill your amp

isn't a clipped signal one that the sub can't cope with?

how can a 1100w rms sub not cope with any signal sent from a 100w rms amp?

and i don't know what ohm the speaker is? guessing dual 2ohm? but i have no clue.

think i'll just save for a better amp for the sub and then use the one i have to run some components...

[saxojh]

isn't a clipped signal one that the sub can't cope with?

how can a 1100w rms sub not cope with any signal sent from a 100w rms amp?

and i don't know what ohm the speaker is? guessing dual 2ohm? but i have no clue.

think i'll just save for a better amp for the sub and then use the one i have to run some components...

Good idea mate. If your going to use thta amp to power comps though then make sure you set the gain properly as not a lot of comps wil take 100 wrms easily without being set up properly.

[tokyodrifte]

No the problem is not with the subwoofer, the amplifier going on full gains, especially cheap made amplifiers will send clipped signals to your subwoofer, No matter how power a subwoofer you have if its getting sent dirty signals its not going to like it, and could brake the woofer, but the amp would probably brake before it.

[RyanSaxo]

brake? why will it be moving?

or do you mean break? as in stop working?

and at what point did i mention it being on 'full gains'? i was asking about the wiring, which i think is the problem, as mine is currently wired either on 1ohm or 2ohms. both of which my amp don't like?!?

so the term a clipped signal, is not a signal that is too high for a speaker? but a signal that is dirty due to an amp being run at full gain?

i must be wrong then. thanks

[tokyodrifte]

The reason a think you have it on full gain is the fact the amplifier is tiny for that subwoofer.

My mistake, Break*

A clipped/dirty signal will almost always be sent from cheap amplifiers on full gain, Im just saying...

It wont kill the subwoofer instantly like over powering but it will decrease the life span of the woofer.

[RyanSaxo]

the gain is on halfway on my amp. and the sub seems to be loud enough,

i'm just concerned by the wiring that the amp might go pop as it is wired either 1ohm or 2ohm...

[Vibe_I_C_E]

If that sub is 1100w RMS then a 450W Peak power amp may be somewhat under powering that best and wont be good for it, id go for a newer amp like a Vibe Black Box or a Nice Mosfet

[RyanSaxo]

If that sub is 1100w RMS then a 450W Peak power amp may be somewhat under powering that best and wont be good for it, id go for a newer amp like a Vibe Black Box or a Nice Mosfet

yeah, that's what i thought.

then use that to power some comps.

just need to save some pennies.