This Bluetooth audio it is compatible with the following spas

Subwoofer and speakers are sold separate. Hot Spot models must have factory speakers already installed. 

Hotspring Highlife Series 2013 to current models

(JJ)      Jetsetter 2013-2018

(JTN)  Jetsetter LX 2014-Current

(JJN)  Jetsetter 2019-Current

(H)      Prodigy 2013-2018

(HN)   Prodigy  2019-Current

(II)   Sovereign 2013-2018

(IIN)  Sovereign  2019-Current

(TRHN) Triumph 2019-2022

(AR) Aria 2013-2018

(ARN) Aria NXT 2018-Current

(VV) Vanguard 2013-2018

(VVN) Vanguard NXT 2017-Current

(KK) Envoy 2013-2018

(KKN) Envoy NXT 2014-Current

(GG) Grandee 2013-2018

(GGN) Grandee NXT 2014-Current

(SS) Vista-Summit 2013 Only

Hotspring Limelight Series 

(BLT)    Bolt  2013-2017

(GLW)  Glow 2013-2017

(BMI)   Beam  2018-Current

(BMII) Beam  2018-Current

(FSH)   Flash  2018-Current

(FLR)   Flair   2013-Current

(PLS)   Pulse  2013-Current

(GLM)  Gleam 2013-2017

(PSM)  Prism 2018-Current

Hotspring Hot Spot Series

Must have speakers installed previously from factory. Speakers cannot be added to these models.  

(RHY) Rhythm 2013-Current

(REL) Relay 2013-Current

(PAC) Pace 2020-Current

(TEM) Tempo 2013-2019

Caldera Spas