Will these subs pair okay?

[ElCid79]

So I will spell out my HT setup.

Marantz SR7001 (as a preamp)
NAD T955 Power amp
Klipsch KF-28 Icon 8'' mains
Klipsch SF-1 Surrounds
Klipsch SC-1 Center Channel

I have an older Klipsch KSW-12 Synergy series subwoofer from the late 90s, that has served me very well. On this latest BF I managed to snag the Klipsch 12'' Reference Sub R-12SW for about $150 using some store credit.

Should I just ditch the old Synergy, or run a dual sub setup?

Some stats.
New Sub (R-12SW)
FREQUENCY RESPONSE 29Hz-120Hz +/-3dB
MAXIMUM ACOUSTIC OUTPUT 116dB
AMPLIFIER All digital
AMPLIFIER POWER 200W / 400W
DRIVE COMPONENTS 12" (30.5 cm) high excursion, IMG, front-firing woofer
ENCLOSURE MATERIAL MDF
ENCLOSURE TYPE Bass Reflex
INPUTS Line level/LFE RCA jacks
HEIGHT 16" / 40.64 cm (16.5" with feet)
WIDTH 14" / 35.56 cm
DEPTH 18.5" / 47 cm (19.2" with grille)
WEIGHT 33 lbs (15 kg)
FINISH Brushed Black Polymer Veneer
BUILT FROM 2014
FEATURES Volume, Lowpass, Phase, Auto Power
PHASE Switchable 0-180 degrees


Old Sub (KSW-12)
Power handling, FTC Rated Power: 105 watts continuous, 22-100Hz @ ≤ 1% THD

• Power handling, Dynamic Power: 440 watts @ ≤ 1% THD

• Sensitivity: 113dB SPL 1/8 space, 1 meter

• Low pass crossover: Continuously variable from 40-120Hz, 24dB/octave slope above 120Hz

• Woofer: K-1071-K 12” (30.5cm) down-firing fiber-composite cone

• Amplifier: Class A/B discrete MOSFET outputs

• Phase: Switchable 0 or 180 degrees

• Enclosure material: MDF

• Enclosure type: Bass reflex via rear-mounted port

• Inputs: 2) Line level/LFE RCA phono jacks and 2) High level speaker terminals

• Outputs: 2) High level speaker terminals, high pass filtered at 100Hz, 6dB/octave slope

• Auto power on: 2 Second ON delay, 15 minute OFF delay

• Dimensions: 17” (43.18cm) x 15” (38.1cm) x 15” (38.1cm)

• Weight: 35 lbs. (15.9kg)

• Finishes: Matte-finish Black vinyl

• Voltage: 110/120 VAC/60Hz

• Export voltage: 230 VAC 50/60Hz

• Built from: 1998
  
  
  
  My receiver only has one subwoofer output. So I would need to run a Male to dual female Y-Splitter, a cable. Then a single female to two male y splitters (I don't think this part is necessary, as both subs have a LFE input, but I have always run a splitter on my subs.)

 

[cel4145]

• My receiver only has one subwoofer output. So I would need to run a Male to dual female Y-Splitter, a cable. then a single female to two male y splitters.

Many receivers cheat and do the same thing. They have two connections, but it's just an internal splitter.

I would say position your new sub where you think it works best, then experiment with the KSW-12 in different locations and see if you like what it adds in.

You will want to volume match them at the listening position. If you don't have an SPL meter, get an SPL metter app for you phone. While their readings may not be accurate as to what db level you are hearing, you can certainly use them to match the volume on one sub to another.