Ok so I had been looking for an amp with two pre-outs but a Nad C320BEE came up pretty cheap at £90 so I snapped that up. But I was just wondering if there was a way of wiring my sub into my system. Its a REL strata so it does have high level inputs and someone told me you could use them but im not entirely sure how? Also I've never used a turntable and was thinking about maybe getting one, would i need an extra phono pre amp to get one?
Using a Sub without a pre-out?
- Thread starter Michaelholder1
- Start date
Usually using the high level inputs means you run the speaker cables to the sub's inputs (high level!) and then the sub should have high level outputs which you run to the speakers. If in doubt then look at the sub's users manual and if you have not got one, then go to the REL website and download one 
Tommo
Tommo
Well I presume thats what it meant but the speaker outs are already being used by my speakers? Would I go from my amp to my sub. Then from my bass cut output to my speakers?
But then someone told me it wouldnt sound as good like that?
But then someone told me it wouldnt sound as good like that?
Nad 320 has pre out >>> http://nadelectronics.com/products/hifi-amplifiers/C-320BEE-Stereo-Integrated-Amplifier
Yes thats for when you have a graphic equaliser OR if your subwoofer has a line level output (or more correctly throughput) which you then connect to the main in, effectively the subwoofer then sits inbetween the pre out and the main in.
or you can do this (lifted staight form the REL website)
"Unless your amplifier does not allow for High Level Connection we always recommend using the High Level Connection. The purpose of using the High Level Input, instead of the Low Level Input, and connecting to the speaker output terminals is one of the unique secrets of REL’s success. By connecting to the high-level input on the REL from the amplifier you build forward the sonic signature of your main system, including the tonal balance and timing cues of the entire electronics chain. In the way, the REL is fed the exact signal that is fed to the main speakers. This is a very important point and together with REL’s Active Bass Controller (ABC), ensures far superior system integration of the sub-bass with the main system."
So they actually recommend the high level output.
Tommo
or you can do this (lifted staight form the REL website)
"Unless your amplifier does not allow for High Level Connection we always recommend using the High Level Connection. The purpose of using the High Level Input, instead of the Low Level Input, and connecting to the speaker output terminals is one of the unique secrets of REL’s success. By connecting to the high-level input on the REL from the amplifier you build forward the sonic signature of your main system, including the tonal balance and timing cues of the entire electronics chain. In the way, the REL is fed the exact signal that is fed to the main speakers. This is a very important point and together with REL’s Active Bass Controller (ABC), ensures far superior system integration of the sub-bass with the main system."
So they actually recommend the high level output.
Tommo
Ah ok then, I guess it would also reduce strain on my main speakers as its a bass cut output. When using my home cinema system do I still wanna do this? As I presume the home cinema amp is designed to use the sub output? Or do you reckon i should still wire the sub up that way? Also, an off topic question, do you reckon my strata is getting a bit outdated these days?
Just had a thought, what about impedances? Would that not create an impedance too low for my amp?
Michaelholder1 said:
Damn, you'd think the sub designers would have thought of that wouldn't you?
No, the impedance of the high-level input is very high, so when wired in parallel to the amp with the existing speakers it barely makes any difference to the overall impedance.
eggontoast
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- Feb 23, 2011
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The_Lhc said:
Well who would have guessed, The_Lhc has been swotting up, wonders will never cease.
Definition of condescending: 'Acting in a way that betrays a feeling of patronizing superiority'
So I guess you could be condescending and patronising as well? But I'm not going to be childish enough and have an argument about the English language with you; if I was to guess you're probably a lot older than me which makes it more surprising you'd be so immature on a forum designed to help people? (not try make yourself feel clever)
As for you other comment; I'm am very recently in to hifi so my knowledge base of it is very small. To start my REL strata is a very old model and therefore the information given by tommo may not be applicable to my perticular sub; the high level inputs may have been intended for other uses. For instances I'm pretty sure the sub is intended for home cinema use and for all i know high end home cinema amps could have high level outs for the sub. The subs amp could also be used to power other speakers? I hadnt really thought about how they could be used, I asked the question because I didnt really need to think about it too much as this was quicker, easier, and allows a bit more certainty.
My knowledge of electronics, and structural vibration is probably far superior to yours however this doesn't apply directly to speaker and amp design so unfortunately that knowledge will come in time, so don't try act more intelligent than other people when its not neccessary because to be honest its not very friendly!
So I guess you could be condescending and patronising as well? But I'm not going to be childish enough and have an argument about the English language with you; if I was to guess you're probably a lot older than me which makes it more surprising you'd be so immature on a forum designed to help people? (not try make yourself feel clever)
As for you other comment; I'm am very recently in to hifi so my knowledge base of it is very small. To start my REL strata is a very old model and therefore the information given by tommo may not be applicable to my perticular sub; the high level inputs may have been intended for other uses. For instances I'm pretty sure the sub is intended for home cinema use and for all i know high end home cinema amps could have high level outs for the sub. The subs amp could also be used to power other speakers? I hadnt really thought about how they could be used, I asked the question because I didnt really need to think about it too much as this was quicker, easier, and allows a bit more certainty.
My knowledge of electronics, and structural vibration is probably far superior to yours however this doesn't apply directly to speaker and amp design so unfortunately that knowledge will come in time, so don't try act more intelligent than other people when its not neccessary because to be honest its not very friendly!
eggontoast
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- Feb 23, 2011
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Michaelholder1 said:
No, if I'd wanted to do both I'd have pointed out that you spelt condescending wrong originally. Oops.
Difficult to tell really, define "a lot".
I still maintain that last point is the only reason 99% of people join forums like this...
Not that much has changed in sub design over the years, largely because there isn't that much that can change, same goes for amps and speakers, the basic principles don't really change, how can they?
A high level output is a speaker connection, that's it.
Not unless it's part of an all-in-one home cinema system but besides, then you'd need OUTputs on the sub, not inputs.
Really? It should do, I did two qualifications in Electronic Engineering when I was younger and one of my projects was to build an amplifier. It was a big pile of crap to be fair (I can't solder for toffee) but we certainly studied aspects of amplifier design. I've largely forgotten it now but the question of parallel impedances is a pretty basic one.
If you have the education you claim (or imply) then you should be able to do two things; 1) apply some critical thinking to your questions before you ask them and 2) Google for a manual (or do some research as it's sometimes known).
If your question had come from a complete beginner then yes, I'd grant that my repsonse might have been a bit harsh, even though it was a joke, however now that I know you're one of the world's foremost leaders in Electronics then your question is little more than imbecilic. You really should have been able to work out the answer for yourself. After all, I did and as you were attempting to suggest, I'm an idiot. What's your excuse?
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