Tried some high level inputs vs RCA today
Road Warrior
Joined: Jan 2013
Posts: 1,812
Likes: 122
From: Joliet IL.
Yeah AAWAV I think we were saying the same thing..LOL. What I was confused about was what Mark said about HU being HL and being reduced to LL for the RCA's and that you could get HL from the RCA's. What I always thought was that the RCA's used the Preamp on the HU and by passed the HU internal amp. I don't know how you can get HL off the RCA's. When I think of HL I think of running jumpers off your speaker wires to the external amp! 
Ultimate HDF Member
Joined: Oct 2012
Posts: 6,621
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From: Indianapolis IN.
Like Haze I've heard mixed reviews on the capacitors but I have a friend who is running one and he loves it! His voltmeter was always on about 11.5 - 12 while going down the road with his system blasting and the bass notes hitting. Now he say's it stays on 14 going down the road no matter how loud he turns his system up. I've never experienced a loss of voltage going down the highway on my bike (yet) Mine stays right up there on 14 without the cap. Like everything else I think it's bike specific.
Yeah AAWAV I think we were saying the same thing..LOL. What I was confused about was what Mark said about HU being HL and being reduced to LL for the RCA's and that you could get HL from the RCA's. What I always thought was that the RCA's used the Preamp on the HU and by passed the HU internal amp. I don't know how you can get HL off the RCA's. When I think of HL I think of running jumpers off your speaker wires to the external amp!
Tourer
Joined: Dec 2010
Posts: 439
Likes: 6
From: Left Coast
I'm thinking if this option is used with Line levelers, an adapter will be required to go from RCA-wire connection. I'm bored so as soon as I get my rear line leveler I'll give it a try.......Pending
Road Master
Joined: Aug 2014
Posts: 783
Likes: 13
From: Indiana
Mike, sorry as I see what I posted is quite confusing. What I've seen done, is not running HL from the RCA preout on the HU, but HL from the HU;s speaker wire into the LL input of an amp that does not have HL inputs on it. Essentially, you are bypassing the need for a LOC. You cut the RCA connector back a bit from the end of the cable. Then solder it onto HL wire so you have an input for the HL wire into the amp. You would need to check the allowable input voltage range on the amplifier to make sure it can handle it, but look at the JL M400/4 for instance. It supports up to 4V at the RCA inputs but has no HL input source for it like the T400X4AD that Haze used. But it can take the HL input V. So, I would just run the speaker level out straight to the amp with my HL modified to have RCA terminals on it instead of using a LOC.
Road Warrior
Joined: Jan 2013
Posts: 1,812
Likes: 122
From: Joliet IL.
Mike, sorry as I see what I posted is quite confusing. What I've seen done, is not running HL from the RCA preout on the HU, but HL from the HU;s speaker wire into the LL input of an amp that does not have HL inputs on it. Essentially, you are bypassing the need for a LOC. You cut the RCA connector back a bit from the end of the cable. Then solder it onto HL wire so you have an input for the HL wire into the amp. You would need to check the allowable input voltage range on the amplifier to make sure it can handle it, but look at the JL M400/4 for instance. It supports up to 4V at the RCA inputs but has no HL input source for it like the T400X4AD that Haze used. But it can take the HL input V. So, I would just run the speaker level out straight to the amp with my HL modified to have RCA terminals on it instead of using a LOC.
Gooey.... You have one of the 14+ bikes?
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Elite HDF Member
Joined: Aug 2008
Posts: 4,150
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From: S. FL
Also tried with another amp last night and the signal was too strong and didn't sound as clean, RCA's sounded better. Gains were already kinda low with this amp with low level inputs.