Tape Monitor Line-Out direct to amplifier solution


Is it possible to use the line-outs from a traditional pre-amp's tape monitor to go directly to an amplifier, then attach an inexpensive volume attenuator (like niles audio makes) between the speakers and the and the amplifier to attenuate the sound? or... will connecting the tape monitor's line-outs just overload the amp, with no chance of attenuating the volume without first connecting a pre-amp or passive volume attenuator to the line-out's signal path? I am trying to avoid having to buy a second pre-amp in order to add a zone 2 set of amp/speakers to a traditional single zone preamp.
andron
Hello Andron,

This would be a bad idea. The constant high level signal from the Tape Out would cause the amplifier to run full blast. Your attenuators, and more than likely your amp would burn up in a short time.
While i'm not familiar with the Niles unit that you mention, i don't see a problem with this at all. Only variable that i see coming into play would be the output level of the tape out being too low to drive an amplifier that lacks input sensitivity to full output. Even then, so long as you weren't looking for roof raising levels, you should be able to obtain at least reasonable spl's. I've never measured the output level on a tape output loop, so maybe someone else can help. I'm not certain if it is line level or not. Sean
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Hello Sean,

Most Tape Outs that I have measured have about same signal strength as a main out, when running the volume control of most preamps at full.
I would be afraid that if Andron tried this he may find that the amp is running flat out, and if there was speakers, and or the attenuator hooked up at the time, bad things could happen faster than the amp could be powered down.
If you have a preamp, and a scope handy, you may want to check to confirm this.
Why would the tape out being run at full line level into a passive attenuator feeding an amp be any different than a CD player running into a passive attenuator feeding an amp? It is not like the passive attenuator has to dissipate high levels of contant wattage, it is only a matter of 1 - 3 volts at max. Obviously, one would want to start off with the attenuator at minimum volume ( maximum attenuation ) and step up from there. The attenuator itself would have to have enough range to pad the line level output to the desired level, so that would be the only major concern that i can think of. Sean
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I was running a CD player directly into the Placette remote volume control (RVC) which was connected to my amplifier. I could not listen to my LP turntable this way, so I connected the tape-out from the preamp to the line-in of the RVC and left the line-out of the RVC connected to the amplifier. The main output of the preamp is not connected to anything.
To listen, I select from the pre-amp but leave its volume control off. I control volume using the RVC and find that the CD player requires a little less volume than my high-out MC cartridge to get the same levels.
The CD player and LP turntable produce a cleaner sound this way than by running them through the preamp main output. I suspect that the signal isn't going through the entire pre-amp and is less affected by this.