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Vanagon Nut
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Joined: February 08, 2008
Posts: 10379
Location: Sunshine Coast B.C.
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 Posted: Thu Jul 13, 2017 2:29 pm Post subject: Alpine iDA-X305 head unit + ktp-445 amp |
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Hi folks. I see there's a stereo thread in the Vanagon forum but I'm not sure questions like this are appropriate there.
I got what is most likely a great deal on a used iDA-X305 Alpine head unit with KTP-445 4 channel amp. I'm installing them into my Vanagon. The amp is "plug and play"; it connects directly to the head unit socket. The HU didn't c/w a separate plug with just wires.
If 2 speakers are connected to 2 of the amps channels (L:1 R:2) but the other 2 channels remain disconnected (no load on them), will this damage those channels?
When the amp is connected to the HU are the RCA outputs rendered in-op? i.e. do they get bypassed internally in the HU?
Does anyone know if this amp allows channel bridging?
Thanks
Neil.
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Erik G
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Joined: October 16, 2002
Posts: 13281
Location: Tejas!
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| Posted: Tue Jul 18, 2017 8:07 am Post subject: Re: Alpine iDA-X305 head unit + ktp-445 amp |
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sorry - just saw this. If you still need it:
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| If 2 speakers are connected to 2 of the amps channels (L:1 R:2) but the other 2 channels remain disconnected (no load on them), will this damage those channels? |
No, it will be fine to only run L and R front (or rear)
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When the amp is connected to the HU are the RCA outputs rendered in-op? i.e. do they get bypassed internally in the HU?
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Unsure - it would not make sense to do so though. I can't imagine Alpine to not think about that for someone that still wants to drive a separate amp with subwoofers
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| Does anyone know if this amp allows channel bridging? |
Yes, 90W X2 bridged 4ohm
link to the owners manual:
https://assets.sonicelectronix.com/manuals/alpine/headunits/ktp445u_manual.PDF
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