Use of preouts
NeilGabriel
Posts: 1,487
In a couple threads, the use of preouts on receivers has come up. If you use the preouts to run separate amps, does the the preamp become disconnected from the main amp(s) in the receiver? I assumed it did and that this is why there is the connection between the preouts and the main in (so you would need to connect another preamp to the main in if you wanted to use the receiver's amp). Can someone clarify this and comment both on stereo v. multi-channel. I assume with multi-channel, you can use preouts for say 2 of 5 channels, but the preamp still works with the other 3 channels in the receiver? Colored flow charts will help. Thanks.
Post edited by NeilGabriel on
Comments
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neil,
when you have a pre-out on a reciever, there is a bypass circuit for the amplifier on that channel which is activated, which in effect breaks the connection between the preamp and the receiver's amp (for that channel only). so if you have a 5 channel receiver and were to use the pre-out for just a single channel, you could use the amplifier in the receiver for the other 4 channels. no need for an extra preamp. -
I'm not sure exactly what you're asking but I think I got it. This example may help: I use the pre-outs from my receiver to drive 4 of my 5 channels from separate amps. I still run my surround back channel from the receiver's amp. Nothing fancy had to be done to achieve this.HT/music rig
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Onix SP3 tube amp
bunch of Outlaw 2200 monoblocks
DUAL SVS PB12+/2 subs :eek:
Denon 3910 DVD/SACD/DVD-A
DirecTV HR10-250 DVR
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Velodyne minivee -
right...but with my two channel integrated amp, if I use the preouts to go to another amp, then is the premp disconnected from the first amplifier so it essentially cannot be used (unless i ran another premp into the main ins)?
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You've lost me. Sorry.HT/music rig
Panasonic PX60U 50" plasma
Yamaha 5990 AVR
Onix SP3 tube amp
bunch of Outlaw 2200 monoblocks
DUAL SVS PB12+/2 subs :eek:
Denon 3910 DVD/SACD/DVD-A
DirecTV HR10-250 DVR
Onix Strata Mini mains
Mirage OM10 surrounds
Polk CSi5 center
Polk SC80 rear surrounds
Samsung BDP1000 blu-ray player
Bedroom rig
Jolida SJ302a tube amp
Denon 2910 universal player
Onix Ref 1 monitors
Velodyne minivee -
NeilGabriel wrote: »right...but with my two channel integrated amp, if I use the preouts to go to another amp, then is the premp disconnected from the first amplifier so it essentially cannot be used (unless i ran another premp into the main ins)?
what integrated pre amp do you have?
some integrated pre amps have a jumper you can remove.. that seperates it into a amp and a pre amp as long as you remove the jumpers.
if your integrated has those jumpers... remove them... and you can use your integrated pre amp and just a pre amp.
it makes no sense to use one pre amp connected to another pre amp.. that's just silly talk.
the answer to your question if I understand it right.. if you use the pre amp outputs from your integrated, to go to another amp, then yes they are disconnected from the pre amp.PolkFest 2012, who's going>?
Vancouver, Canada Sept 30th, 2012 - Madonna concert :cheesygrin: -
No the use of pre-outs from a receiver to a seperate amplifier does not mean the receiver will not still pass the signal to the receivers internal amplifier section, you have to try and see. As an example my Onkyo receiver sends the signal to both my outboard amp and the receiver's amplifiers.
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Reel is correct. I have a Sony ES receiver that I use as a preamp, but according to the manual it states that I can still use the internal amp of my receiver even if I have all the preouts used up.58" Samsung Plasma (on wall)(calibrated)
LSi15's front (modded xo's)
LSic center
LSiFX's sides
LSi7's rears
Sunfire Sig. 600 amp for 15's
Sunfire Sig. Cinema for C,S&R
Sony ES 3000 pre/pro
SVS 2039 PC Plus sub 12.3 (16hz tune)
PS3
Wii
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12 awg monster speaker-cable (bi-wired)
Belkin PF60 power conditioner
Monster power conditioner for sub -
Silly talk...silly talk? Harumph. You guys figured out what I was asking. If I use the preouts and run them to an external amp, is the preamp still connected to the amp within the int. amp or receiver? I assumed that if you pulled the jumper cable out, the preamp was no longer linked with the internal amp. This does not appear to be the case. Though I am wondering if this is true where there is the jumper cable?? I thought that cable kept the preamp connected to the amp. I'll do some experimenting with my Carver int. amp (CM-1099) and Rotel (RXB-975) receiver.
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It is not true when there are external jumper cables and they are removed.
The newer pre/pro receivers are connected internally, at least the ones I have seen recently.
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reeltrouble1 wrote: »It is not true when there are external jumper cables and they are removed.
The newer pre/pro receivers are connected internally, at least the ones I have seen recently.
RT1
I believe you are correct. -
newer as in how new?PolkFest 2012, who's going>?
Vancouver, Canada Sept 30th, 2012 - Madonna concert :cheesygrin: -
not as old as you Al!!!!!!!!!!!!!
Either you see them on the back of the receiver or you do not, in the 70's-80's it was the way to build the integrated amp, at least that is when I got serious about audio and they all had them. Anyway I guess before all the chip sets.
I bought a pro-logic receiver in the 90's no jumpers on the back. I have never seen them on a DD processing receiver, makes sense as they would take up a bit of space on the back panel. It would not suprise me if some stereo integrated amps still have them, I dunno, maybe that Outlaw Receiver, have to find a picture.
RT1
