Will the VSX-LX505 damage the Prime Tower?

No. The VSX-LX505 is rated for the Prime Tower's 8 Ω load as it comes.

What impedance setting should I use for the Prime Tower on the VSX-LX505?

None: the Prime Tower is 8 Ω, and the VSX-LX505 needs no change for it.

Is the VSX-LX505 powerful enough for the Prime Tower?

More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 26 W per speaker, and the VSX-LX505 is rated 120 W per channel. Cinema reference level, 105 dB peaks, takes about 253 W.

Does the SVS Prime Tower work with the Pioneer VSX-LX505?

Verdict

Yes

The Prime Tower is 8 Ω, and the VSX-LX505 is rated for speakers down to 4 Ω, so it drives them as is.

Speaker load

8 Ω speaker, rated down to 4 Ω

Power

120 W

More than you need. About 26 W gives 95 dB peaks at 2 m

How to connect them

Connect the Prime Tower speakers to the VSX-LX505's front terminals with speaker wire.
Run Advanced MCACC with its microphone at your seat.

Plan the Prime Tower and VSX-LX505 in your own room.

Draw your room in 3D, place both, and see every connection checked and how loud they play at your seat. Designing is free.

Build it in your room

The specs that decide it

SVS Prime Tower

Impedance: 8 Ω
Sensitivity: 87 dB (2.83 V, 1 m)
Recommended amplifier power: 20–250 W
MSRP: $700 each (MSRP, September 2026)

All Prime Tower specs and pairings

Pioneer VSX-LX505

Amplifier channels: 9
Height formats: Dolby Atmos, DTS:X
Lowest speaker impedance: 4 Ω
MSRP: $1,399 each (MSRP, February 2025)

All VSX-LX505 specs and pairings

Questions about the Prime Tower and VSX-LX505

Does the Prime Tower work with the VSX-LX505?: Yes. The Prime Tower is 8 Ω, and the VSX-LX505 is rated for speakers down to 4 Ω, so it drives them as is.
Will the VSX-LX505 damage the Prime Tower?: No. The VSX-LX505 is rated for the Prime Tower's 8 Ω load as it comes.
What impedance setting should I use for the Prime Tower on the VSX-LX505?: None: the Prime Tower is 8 Ω, and the VSX-LX505 needs no change for it.
Is the VSX-LX505 powerful enough for the Prime Tower?: More than you need. From a seat 2 m away, loud 95 dB movie peaks take about 26 W per speaker, and the VSX-LX505 is rated 120 W per channel. Cinema reference level, 105 dB peaks, takes about 253 W.

Swap one of them

References

Specs verified against the manufacturer's published data. Last checked September 15, 2026.

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