fiestaturbo.com

[RIDDLERYDA]

System finally installed, all four JBl's in a temporary ported enclosure awaiting fiberglass powered up with 2x jbl1201.1's. putting out 1600w rms (i hope) just trying to figure out how to set it up for 2ohm load [ERRR] then it should be putting out about 2200w its loud as fook at the mo cant wait to hear it when its set up for 2 ohms (if its possible). if anyone knows how i can do this please help because at the moment its becoming a real big headache trying to find a diagram of some sort on the internet also whatdya think of my first install will post pictures as soon as fiberglassings done!! (which knowing me will be sum time next year jks) also got 2 qb 6x9's (200w rms) the amp for them cost more than they did, (jbl px 600.2) the bass that comes outta these things is unreal for a 6x9, also theyre being mounted on the doors as ive heard loadsa people saying rear speakers are just a waste of time, plus i have no room as my subs take over the whole of the back of my car (no rear seats).

[RIDDLERYDA]

Who's a silly boy then??(ME!) i just found out that wiring 2 subs off 1 amp in parallel results in a 2 ohm impendance (with a 4 ohm sub) so i have 2200w rms hopefully!!

[butler_29]

wheres the evidence? pics please?

[bassboy]

reminds me of my install....2500wrms:









my old orion H2 - 2400wrms









my old pioneer 121spls





those have been replaced with the 3004spls now...play lower than my kickers

bassboy

[RIDDLERYDA]

nooo! i dont wanna post pics yet, the enclosure looks like s**t because its just temporary but i promise in about a month or two ill post pictures with my progress in fiberglassin (first time ive ever used fiberglass so a bit tricky). anyone know how to measure box size for fiberglassing?, would help alot. but i really wanna do one of those step by step tutorials on how i did my fiberglassing. but i can guarantee ill have pictures posted within the next couple of months..

[RIDDLERYDA]

p.s that kicker install looks a hell of alot neater than mine also thinking about getting rid my jbl's [ERRR] ive only got the gain up half way or they sound weird. thinking about 2 re-xxx's, dunno yet though, might just wait a while but if anyone thinks these subs (re-xxx) are good then do tell and ill definately take changing them into more consideration.

[bassboy]

pics or no one answers your questions

bassboy

[RIDDLERYDA]

nope, im gnna change em neway to the xxx's, becuase its annoying me not being able to turn the gain at least 3/4 of the way up, so any one interested in four jbl 1502d's pm me (i need the money now these xxx's dont come cheap).

[butler_29]

so what kind of experiments have u dun with ur install? to bassboy and RIDDLERYDA. Like for example sitting in traffic and dont ppl point at thier ears or summat. or going into town and ur getting everyones attention.
Ive parked next to my mates car and he's seats vibrating with my vibe sub and thats only 350rms. Im sure with the rms figure both of u can make the glasses fall of the shelf in a pub, parked next to the place.

[RIDDLERYDA]

lol well its not always cranked up all the way!! thats impossible to drive, cant see straight it vibrates your eyes in ya socket havent really seen what i can vibrate with them yet though, you get a gd kick outta setting car alarms off though

[butler_29]

lol try n do that pub thing, park nxt 2 a pub, crank the music up, ask one of your mates to go in the pub and c if any bottles are dancing. now that will b fcuking awsum

[RIDDLERYDA]

would be good 2 film it an everything sept all da pubs near me are either run or inhabited by pyki scum!! might have to go a little further.

[bassboy]

done the pub thing plenty of times...a few different pubs actually...done the same to restaurantes....watched an alcohol bottle fall off the shelf and the owner tried to charge me for it! pimsle...got told by a cop he could feel my bass before knowing where i was.....got told to turn the music down by people upto 8-9cars BEHIND me let alone people in front...people always block their ears as i go past....funniest one was i distorted tv signals in my mates flat in the Scirocco HAHAHA

bassboy

[RIDDLERYDA]

distorted tv signals , so what subs and amps do you have at the mo, them pioneers?

[bassboy]

got the directed 1100ds and the 3004 spl pioneers



but they face the other way round

bassboy

[butler_29]

is it best to face the sub in the best or sticking out?

[SavageMonkey]

Yeah I'd like to know if it's just preference or whether there are benefits to having the coils pointing outside of the box with the cones facing inside. What do you think?

[diablosvy]

The only difference is the air space the sub displaces in the box...so you have to design the box around how you place the sub i.e. ass in or out
As for sound theres no difference at all!

Mike

[diablosvy]

:lol: nope, im gnna change em neway to the xxx's, becuase its annoying me not being able to turn the gain at least 3/4 of the way up, so any one interested in four jbl 1502d's pm me (i need the money now these xxx's dont come cheap).

How did you set up your amp(s) did you get them properly scoped?

[SavageMonkey]

Hmm, so ass out ould mean smaller boxes (yet probably more overall space taken up due to a huge magnet sticking out)?

[RIDDLERYDA]

lol properly scoped??? i just found out a phew wiring diagrams and worked it out myself if thats what you mean, wasnt hard at all.

[lucasdemoley]

What are your opinions on the alpine type r's 15" subs? any idea what db two would hit?

[RIDDLERYDA]

the kind of decibels it they would hit relies on many factors: enclosure size, port size (tuned for optimised output) and the power your giving your subwoofers so reply with your plans on these factors and i will try to give you an estimate (however i think bassboy will pobably give you a more accurate number )

[lucasdemoley]

Directed 1100.d amp, optima blue top batery with the subs in two separete 15boxes (the standard sized ones you get from audion shops).

[diablosvy]

lol properly scoped??? i just found out a phew wiring diagrams and worked it out myself if thats what you mean, wasnt hard at all.

If you dont get the headunit and amp scoped then you could be sending a clipped signal to the sub...theres alot more to setting up your ICE than just reading a manual and turning a few knobs!
If your going to get the XXX then your gona want to get the system scoped and dont ever use the bass boost on your amp!

Mike

[SavageMonkey]

Why would a head unit be clipping the bass?

[diablosvy]

Why would a head unit be clipping the bass?

Its to do with the oscillations of sound waves...above a certain volume on the headunit the sound wave is no longer curvy it becomes flat - this is the clipped signal. The headunit is not designed to play to full volume...most headunits send a clipped signal after about 75% volume but its application dependant! Mine sends a clipped signal after 85% volume for instance...all measured with an occiloscope

[SavageMonkey]

I see. In my current system I never ever set my headunit above 74%, but in the end it really all depends on how high the gain is set on your amplifiers.

So what are you suggesting we do? Not turn our headunits over 75% or to get our systems tested somehow?

[butler_29]

do anyone keep any headache pils in their glove just incase they turn it up over 75%

[diablosvy]

I see. In my current system I never ever set my headunit above 74%, but in the end it really all depends on how high the gain is set on your amplifiers.

So what are you suggesting we do? Not turn our headunits over 75% or to get our systems tested somehow?

As said the headunit can clip its not just about setting gains on your amp, becuase if you send a clipped signal to your amp, it will overheat and destroy components. About getting it tested, it really depends on whether you can find someone who has a scope, or going to a car audio specialist and getting them to do it or buy yourself one from ebay or maplins. If you have spent alot on a system then its defo worth it but if its cheap then upto you your money at the end of the day

Mike

p.s. generally its best not to turn the HU up more the 75%...thats if your not going to get it scoped

[DaveZetec]

Most people cannot hear even quite severe clipping in my experience - Above about 90/100 decibels our ears naturally distort the sound we hear. We are used to this, so sat in a car with the music way up is not the best way to tell. To get a better ear for it, walk away from the car with the doors open and the system up. Its quite surprising how different it can sound!

Clipping does damage because it is sending a DC signal into the voice coils of the speakers, which means that heat is being created without a corresponding movement of the coil and cone to give the thing a waft of air and cool it down.
It occurs when the output transistors try and make the wave swing so far it hits the supply rails



At the end of the day the solid state stuff (amps etc) arent really arsed about it, it won't do them any damage in most cases.

Its not good for speakers because it causes them to heat up and warp the voice coils, but its not instant damage.

[diablosvy]

Clipping doesnt send a DC its AC but the cause of the coils burning is the increase in power, this increase (upto 40% more power) in power results in more heat therefor smoking coils

[DaveZetec]

Clipping doesnt send a DC its AC but the cause of the coils burning is the increase in power, this increase (upto 40% more power) in power results in more heat therefor smoking coils

I called it DC because it was flat

I know what I mean , the increase in power but without a corresponding increase in cone movement to keep the thing cool.

All this as made me want to ask if I can take my car up to uni or borrow an oscilloscope to see what atrocity of an sine wave my directed 600d puts out, and see how much my power supply sags under load.

[diablosvy]

What system are you running mate...you should be alright aslong as you keep the gains on the amp down and dont use the bass boost.
Please dont tell me youv got a power cap

[RIDDLERYDA]

Don't think ill bother getting it all scoped at the mo, but if i do get the xxx's then i shall definately (it would be stupid not to @ 400+ quid a sub ) how much do those oscilloscope thingy's cost??