Connecting a speaker selection system

[idelgz]

Hi, i just bought an UPA-200 and i am going to connect to a SAE preamplifier.
I also planning to connect a pair of Klipsch KG4 (6 ohms) and a pair of JBL J216A (8 ohms), to do this, it is O.K. to connect
a Niles speaker selection system sps-6?

Thanks

Idel

[garbulky]

www.nilesaudio.com/images/legacy/manuals/sps6techsheet.pdf
The above link shows that the niles system can handle a max of 100 watts continous. The UPA-200 can deliver 125 watts X2 for the JBL's and more than that (estimated 160 watts X2) for the Klipsch. Which is more than what that is rated for. However, in real life one would likely not be pumping 100 watts continous unless they were having a party. But it is possible and therefore not what I would go for.

[KeithL]

I just want to add two things here:

1) A purely passive speaker switch is quite "forgiving" in terms of power ratings. You can usually put a LOT more current through a purely mechanical/electrical switch than it is rated for without damaging it - and most switch ratings are for "switching" (the switch can handle lots more current "statically" if the current isn't actually flowing WHILE you flip the switch). The problem with products like the Niles is that they aren't simply a passive switch. The Niles claims to have some sort of "protection circuitry" in it; but we don't know exactly how that works, or if it can affect the sound quality even when it isn't "tripped". Beyond that, many multiple-speaker switches include extra resistors which are put in series with the speakers (depending on how you switch them) to protect the amplifier from too low a total impedance, and many rearrange the speaker connections themselves (putting various sets of speakers in series or parallel depending on which ones you engage). It is the power ratings on those resistors that may limit the maximum power. The problem there is that putting resistance in series with a speaker lowers the damping factor - badly (a resistor acts precisely like a long thin wire); and putting speakers in series, especially if they aren't identical, can have all sorts of unintended consequences on how one or both sets sounds (you should really only series speakers if they are identical). It's not that it will necessarily hurt anything - just that the results may be unpredictable - and you MAY significantly degrade the sound quality. Some speaker switches (few modern ones) also include matching transformers, and transformers will definitely affect the sound.

2) The protection circuitry in our amplifiers tends to NOT like it if you disconnect or switch the speakers while the amp is running. You won't damage anything, but switching a speaker switch connected to one of our amps while the amp is on - especially if music is playing - may trip the protection in our amp.

Mar 20, 2014 4:12:28 GMT -5 garbulky said:

www.nilesaudio.com/images/legacy/manuals/sps6techsheet.pdf
The above link shows that the niles system can handle a max of 100 watts continous. The UPA-200 can deliver 125 watts X2 for the JBL's and more than that (estimated 160 watts X2) for the Klipsch. Which is more than what that is rated for. However, in real life one would likely not be pumping 100 watts continous unless they were having a party. But it is possible and therefore not what I would go for.

[idelgz]

Hi!!!,

Thank's for all the advice.

Definitely  I am just going to connect the Klipschs. 
On Sunday I am going to receive my Amplifier, I will let you know how it sounds with the SAE and the Klipsch's.

Also I am going to connect:
Cambridge cd player, Technics Sl 1600mk2 turntable with an Ortofon cartdige, Nakamichi Lx-5 Tape Deck, Carver TX-11 FM