N00b needs help, connect sub to amp

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Soldato
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18 Oct 2002
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Just got a Morduant-short MS309 sub from the 'bay and was wondering how i connect to amp (Yamaha RXV363)?

Amp has 2 RCA line in (and outs) and speaker like clamp inputs. The amp has a sub output but its a single RCA connector (black if it makes a differance).

Whats the best way of connecting the two together?


thx in advance

EDIT: is all i need an RCA Y cable?
 
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Its usual for one of the Phono connectors to be mono, connect you amp to the sub via a single RCA and swap between the two inputs to see if there is any difference, i suspect it will work with either input.
 
Id give it a try without first as like i said one input should be mono anyway and you wont be gaining anything by connecting both up.
 
that was very strange. If i plug 1 RCA from AMP to sub it blows the fuse!

I then connected skybox through the sub and it worked absolutly fine (2 RCA in then RCA out to amp).
 
out of fuses now so i can't try anything till monday.

Was using the left when it blew the first fuse :(
 
I have that sub and use the line in L to sub out (1x RCA) on amp.

Blowing fuses is a common problem with early versions of this sub, unfortunately. Did the guy have good feedback?
 
yep, a really nice guy i picked it up from with good fedeback.

Will get some more fuses tomorrow and have a fiddle, it was working great with sky for a few mins so hopefully its just something small.
 
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Strange that. Make sure you turn it on with the level right down and no signal, also don't try connecting it whilst it's switched on... I got a hell of a thump from it by touching the end of the RCA lead with the level right up!

Also the switch on the back is 3-way, off/auto/on, make sure it's on (fully down, green light) as auto can be a bit strange (mine likes to turn itself on and off every few seconds when on auto)
 
also is it worth trying a 3amp fuse, i have seen a post on Av forums about using a 13amp but it seems to big a 3amp may do it?
 
Should be fine, max power consumption is 250w which at mains voltage is ~1amp.

The fuses he used are also supplied by the manufacturer with the sub, it comes with a load of spare ones (bit suspect lol)
 
well i tried it, damn thing is making the whole room shake.

Will have to wait till my downstairs setup is ready i think :(

EDIT- After some fiddling i have got it acceptable but i think its too big for upstairs
 
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Remember, the idea of a sub is to be discrete and only be heard when needed.
80% of the time you probably wont notice its there but when the banging starts you should be able to feel it :)
 
won an amp off the 'bay today for downstairs so tomorrow should hopefully be hearing the benefit of this :)

edit, this damn home cinema is addictive, originally was going to spend £200 upto £600 already :eek:
 
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