Dom
Member
Registered: 13th Sep 03
User status: Offline
|
quote:
Originally posted by langey
so them scoppes u can see the distortion on them??
Yes, you will see the wave form, which will be a sine wave. And when you turn up the volume on your headunit (measuring it off the RCAs) the sine wave will get bigger, and when it distorts, the sine wave wont be as smooth (you will have bumps and ridges, peaks in the wave form).
Measuring from the RCAs will determine the max volume of your HU, so if it goes 0 - 35, then maybe at 31 it will be clear, 31, it will start to become a tad off, 32/33/34 peaks show and 35, the sine wave will have big peaks and will go outside the range etc.
But yea, once you have the done the RCAs and know what the max volume of the HU is before it distorts (lets say 31) then you plug in your amp (no speakers) and connect the scope to the speaker outputs and then turn the HU to its max volume (31) and then turn the gains up and down and do the same again 
its fairly simple, but you just need to know how to use the scope...so you will need to read the manual etc
here are some links that will be useful:
http://www.bcae1.com/gaincon2.htm
http://www.bcae1.com/oscope.htm
overall site: http://www.bcae1.com/
|
langey
Member
Registered: 7th Sep 03
Location: Wigan
User status: Offline
|
will they not have these in the science department in collage?? might borrow theres.
or see how much it is at Kand M acoustics, but i know it will be a fourtune.
|
Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
|
two letters
RE
and yes i am cheap!
|
langey
Member
Registered: 7th Sep 03
Location: Wigan
User status: Offline
|
quote:
Originally posted by corsa_rob
two letters
RE
and yes i am cheap!
whats this all about??
|
Dom
Member
Registered: 13th Sep 03
User status: Offline
|
yea, your science department might have one floating about  Make sure it isnt ancient or anything, but if it can handle higher information rate (stated in MHz, usually 20,50,100) then the quicker information can be displayed plus they usually cause less capacitance when you probe stuff, so making it even more accurate.
However, have a butchers on the links i gave you and get abit clued up on what is what and what you will be doing, Its fairly simple, but its the scope and set that up that will take you alittle while (especially if you have never used one before etc)
But yea, still get a quote from your local ICE place or have a flick through the yellow pages and see what you come up with.
|
langey
Member
Registered: 7th Sep 03
Location: Wigan
User status: Offline
|
cheers lads
|
Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
|
was speaking to you on msn langley with Dan and Adi ring any bells, you know making me feel cheap LOL
|
langey
Member
Registered: 7th Sep 03
Location: Wigan
User status: Offline
|
langey
yea i know what ur on about, just thouhgt ur post was a bit random 
|
AdiSRI
Member
Registered: 1st May 02
Location: Berkshire
User status: Offline
|
you dont really need to bollock about with scopes, just turn the gains down to min, run it for 2 weeks at say 20 out of 35 on hu.
Then gradually over next couple of weeks increase hu volume to 35.
Then you can up the gains on the amp to louder until just before it distorts.
I happily run my alpine on 35 (max is 35) all day, with no distortion at all, as i set it up that way.
|
langey
Member
Registered: 7th Sep 03
Location: Wigan
User status: Offline
|
so when i come to set it up after the 2 weeks, have it playing at 35 then put gains up till distortion, then back it off a little bit on the gains?
wont it be well loud when i'm right next to it, lol
|
Richie
Member
Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
|
there are these things called ear muffs, but real men can handle it 
|
langey
Member
Registered: 7th Sep 03
Location: Wigan
User status: Offline
|
well i'll handle it.
so richie you think the system will be good for the cash, and what sorta dB u recon i'll be getting?
either ported or unported box
|
DC
Member
Registered: 24th Apr 02
Location: Grimsby, N.E.Lincs
User status: Offline
|
So Langey u & Adi thought anymore bout this inventive ported box design.
Sounded pretty complicated on msn altho worth doing if it can b done well.
As for DB, if that RE sub is as good as Adi says (not for 1 minute doubtin ya mate, lol) then uve got to b lookin between 140 & 145 db.
More likely to b round the 145 figure ported rather than sealed tho
|
Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
|
yeh you guys baffled me with talking about a sealed and ported box in one ! i was under the impression ported boxes are different volumes to sealed
|
AdiSRI
Member
Registered: 1st May 02
Location: Berkshire
User status: Offline
|
they r this is y it was a complicated design.....
|
Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
|
kk , has he decided on getting the RE subs ?
|
AdiSRI
Member
Registered: 1st May 02
Location: Berkshire
User status: Offline
|
sub...
Yes i belive he has settled on the 15" RE XXX
|
Rob B
Member
Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
User status: Offline
|
mmmmmmmmmmmmmmm
|
langey
Member
Registered: 7th Sep 03
Location: Wigan
User status: Offline
|
set on the RE xxx 15"
hit a problem today tho  got a pay rise, but nowere near what i was expecting so system will have to span over 3months rather than 2. but at least the 3 months includes a alarm.
i might fuck the alt,bat and cat off for the 1st month coz i wont be running the system loud, i'll just be "bedding" itin so no need for big power. so that will come later i think when i get paid the month later.
oh and yes the box design is complicated, still not decided.
i have it sorta planned in my head, and when i get the drawing done of it, i'll show adi and see what the boss says 
[Edited on 28-04-2004 by langey]
|
DC
Member
Registered: 24th Apr 02
Location: Grimsby, N.E.Lincs
User status: Offline
|
Suppose as ya runnin it low for the beggining it shudnt matter as u said.
However dont quote me on that, Adi or Richie might come and tell us thats wrong and u need the alternator and battery in from the begining, lol
|
langey
Member
Registered: 7th Sep 03
Location: Wigan
User status: Offline
|
well if i dnt need all that in from the beginging, it will save money and mean i can get the actuall speakers before a month earlyer than planeed
|
DC
Member
Registered: 24th Apr 02
Location: Grimsby, N.E.Lincs
User status: Offline
|
Yer c what ya sayin mate and makes sense 2 me that why your runnin it low u shudnt need the uprated battery and alternator
|
langey
Member
Registered: 7th Sep 03
Location: Wigan
User status: Offline
|
well if adrian or richie can just clear this up, thanx lads.
|
AdiSRI
Member
Registered: 1st May 02
Location: Berkshire
User status: Offline
|
You shud be ok to run it for a bit, the draw of the amps will be dependant on volume, just dont run it too loud too long, and turn it down if u get serious light dimmage!!!
|
DC
Member
Registered: 24th Apr 02
Location: Grimsby, N.E.Lincs
User status: Offline
|
we were right, lol
|
