Hi,

 

I'm trying to connect my Longmill active sub and I'm having problems.

I've got a Blaupunkt head unit, which I bought the special subwoofer preamp cable for, connect the amp to the battery (fused) and connected it to earth, but no joy. There is another cable coming out of the sub labelled 'remote' Do I need to connect this to anything?

 

I used to have this sub in my old Zed, connected to a pioneer head unit and it worked fine, so now I am a bit confused

 

:confused:

 

Really want to get my back seats back in b4 Trax too!!!

Yeah you gotta connect that, it tells it to turn on iirc. Usually a blue wire, it wont work without it!

Arh but bugger, the Blaupunkt manual with my head unit is REALLY crap with detail on connecting the sub. (Bloody Germans!!)

I'll have a fiddle about!!!

 

What is iirc, btw?

iirc = If I Recall Correctly

:rolleyes: new one on me!!!

Always like to broaden my "Geek Vocab" :D

No blue wire coming from the head unit? The sub got a built in amp I take it?

 

recall / remember - thought it was the latter.......but doesn't matter I guess!

Yeah it's got a built in amp.

Just looked in the manual wiring diag and the blue wire from the stereo is for the auto antenna apparently?

Ahhhh, hang on, do I want to connect it to the switchable +12V Amp terminal? (I'm guessing yes)

Yeah or the auto antenna will be fine, the both kick out 12v when you turn the stereo on.

Nice one, cheers boys I'll try that tomorrow.

 

Too close to curry time now!! Mmmmmmmmm, curry :D

I would have thought you should install a relay, attached to the subwoofer and wired to the battery direct, and activated by the electric aerial signal. Thats what I did with mine, relay cost about £1.50 and about 25mm cube in size.

 

John

Shouldn`t need a relay as the blue wire switches an internal relay in the sub, same as an amp.

 

Bob

Bob,

 

My cheap subwoofer with built in amp did not have a built in relay so I had to add one. It only had the 2 speaker outs, a ground and a live.

 

 

John

If there is no switched live then relay is good idea. Unusual not to have one though!

 

Bob

Connected it to the power antenna lead and it's all working fine now, cheers for the advice!