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Nath

Member

Registered: 3rd Apr 02
Location: MK
User status: Offline

12th Oct 03 at 17:36

Occasionally when my stereo is turned up loud my amp will lose power for about a second or so and i lose all bass. It happens a few times every song but not for prolonged periods. But if i turn it down a little i dont have this problem.

Why could this be??

Kris TD

Member

Registered: 25th Mar 02
Location: Ware, Hertfordshire
User status: Offline

12th Oct 03 at 17:39

not enough power to it? could be the protection circuit if it gets too hot.

IntaCepta

Member

Registered: 25th Mar 02
Location: Mill Hill East, Greater London
User status: Offline

12th Oct 03 at 21:36

if it is a protection circuit, shouldn't the amp cut out completely and not come back on after a second or so.

i think its needing too much power, maybe upgrade battery/alternator?

chillout

Member

Registered: 7th Apr 03
Location: on my own far far away from everyone!!!
User status: Offline

12th Oct 03 at 21:44

ova heating

Nath

Member

Registered: 3rd Apr 02
Location: MK
User status: Offline

12th Oct 03 at 21:49

Its only a 200watt amp running one 12" sub and if u look at my avatar it gets plenty of space and is rarely hot after prolonged useage.

[Edited on 12-10-2003 by Nath]

andy hirst

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Registered: 18th Apr 02
Location: Rochdale, Greater Manchester
User status: Offline

12th Oct 03 at 22:07

doesn't a powercap sort this problem out?

corsa-sxi

Member

Registered: 11th Jul 03
Location: Kingston upon Hull
User status: Offline

12th Oct 03 at 22:11

hmm nath. im getting the same set up as u, but since u have these problmes i may re-consider

Nath

Member

Registered: 3rd Apr 02
Location: MK
User status: Offline

12th Oct 03 at 22:13

It may just be my amp, it might not be a common fault, afterall i've not heard about this problem from anyone else.

Nath

Member

Registered: 3rd Apr 02
Location: MK
User status: Offline

12th Oct 03 at 22:14

I thought power caps were for mad SPL systems with multiple amps and subs?

Member

Registered: 18th Sep 03
Location: Hampshire Drives: ITR DC2 + Skoda Felicia
User status: Offline

12th Oct 03 at 22:37

Nath is the the standard parcel shelf or a stealth shelf

cheers

mark

Nath

Member

Registered: 3rd Apr 02
Location: MK
User status: Offline

12th Oct 03 at 22:41

Stealth, purchased from Auto Accoustics.

corsa-sxi

Member

Registered: 11th Jul 03
Location: Kingston upon Hull
User status: Offline

12th Oct 03 at 22:43

so what u gonna do aboutit then? replacement amp?

Nath

Member

Registered: 3rd Apr 02
Location: MK
User status: Offline

12th Oct 03 at 22:54

Take it back to where i got it fitted, see what they think it could be. Its all under warranty.

corsa-sxi

Member

Registered: 11th Jul 03
Location: Kingston upon Hull
User status: Offline

12th Oct 03 at 23:13

u got it from cel.. am i right? mail order?

TOMAS

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Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline

13th Oct 03 at 10:49

Either its a prob with the amp, your showing it the wrong resistance i.e (sub/ohms) or your voltages are dropping too low. Powercap will do nothing at all. Powercaps are "icing on the cake".
NOBODY needs to run a powercap unless they have upgraded to the biggest altenator they can get, upgraded their battery (maybe run more than one) and only if they have done all the above and are still finding they have a significant voltage drop in bass-lines.

NeilsC

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Registered: 6th Dec 00
Location: Middlesex drivin a Puma Racing on FRS 18's
User status: Offline

13th Oct 03 at 15:44

dont powercaps keep a constant charge to your amp ? mine does

TOMAS

Member

Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline

13th Oct 03 at 16:16

not if the altenator isnt putting out enough voltage at certain current draws. A powercap smooths out the voltage to the amps to help super-sq orientated systems or SPL burps, if the altenator isnt giving enough power then the cap will not be able to re-charge quickly enough. Its just a band aid for poor, stretched electrical systems.

Richie

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Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline

13th Oct 03 at 16:47

TOMAS - i forgot to ask, how did the 120a alternator experiment go?

TOMAS

Member

Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline

13th Oct 03 at 17:05

Well didnt manage to obtain a 120A, got a 100A Bosch multi-rib off a Vectra, seemed to have EXACTLY the same bracketry as my 55A Bosch UE had including the pully offset, except slightly larger pulley.
My engine (1.2 XE) has a self tensioning belt and although we though we might just be able to squeeze it on with the existing belt I prefered not to risk it and went for the 70A which is specificly designed to work with my 1.2 XE lump. So ive concluded that the 100A will fit perfectly but a new belt approx 25mm longer MAY need to be used instead.

Nath

Member

Registered: 3rd Apr 02
Location: MK
User status: Offline

13th Oct 03 at 18:41

quote:
Originally posted by TOMAS
Either its a prob with the amp, your showing it the wrong resistance i.e (sub/ohms) or your voltages are dropping too low. Powercap will do nothing at all. Powercaps are "icing on the cake".
NOBODY needs to run a powercap unless they have upgraded to the biggest altenator they can get, upgraded their battery (maybe run more than one) and only if they have done all the above and are still finding they have a significant voltage drop in bass-lines.

The amp was set up by CEL when i bought it, in that case i may take my car back to them.

djlee_dj

Member

Registered: 12th Jun 03
Location: Northern Ireland --- aka: ulster
User status: Offline

13th Oct 03 at 21:55

cause its shit maybe

Meat-Pie-SRI

Member

Registered: 10th Apr 02
Location: Berkhamsted, Drives Mk4 R32
User status: Offline

13th Oct 03 at 22:44

shut it nob head

corsa-sxi

Member

Registered: 11th Jul 03
Location: Kingston upon Hull
User status: Offline

14th Oct 03 at 15:17

JL aint sh*t idiot

Dom

Member

Registered: 13th Sep 03
User status: Offline

14th Oct 03 at 16:34

Personally mate its either a duff amp or lack of power and from the sounding of it its the latter since you dont have any probs with it when you have the volume low or mid-ish, though when ya wack it up (when the amp starts to draw power) it cuts out. To be honest mate, i would look at getting a new batter and see what happens - at worst, you'll have a new battery

As for powercaps, i always thought that they stored some extra power for when the amp needs a sudden burst of it - although it would make sense if you had enough power going to it, in the first place, to allow it to quickly charge back up again ready for the next sudden burst

hope you get it sorted mate

Dom

Nath

Member

Registered: 3rd Apr 02
Location: MK
User status: Offline

15th Oct 03 at 18:09