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Discussion Starter #1
We're talking balanced differential inputs through the line level RCA inputs like the JL HD and Alpine PDX amps. Not true balanced 3 wire with DIN connectors like the Zapcos and Audison VRx.
 

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We're talking balanced differential inputs through the line level RCA inputs like the JL HD and Alpine PDX amps. Not true balanced 3 wire with DIN connectors like the Zapcos and Audison VRx.
One guy in Europe used a bit one connected to the OEM HU thru the high level inputs: Pics of my install - PDX 5 Audison Bit 1 - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (M1 / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

I think that you could do a straight connection as well thru the low level inputs using RCA plugs.
 

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Per Elletromedia USA, the Audison amps are common-ground on the RCA inputs. Some have a "speaker-level input" which I am not familiar with.
 

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Discussion Starter #4
One guy in Europe used a bit one connected to the OEM HU thru the high level inputs: Pics of my install - PDX 5 Audison Bit 1 - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (M1 / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

I think that you could do a straight connection as well thru the low level inputs using RCA plugs.
I like that location for the DRC. I was thinking in the armrest since it looks like its an easier place to get wire into.
 

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Per Elletromedia USA, the Audison amps are common-ground on the RCA inputs. Some have a "speaker-level input" which I am not familiar with.
The LRx amps have some kind of replaceable end plate that you can just swap from RCA to speaker level inputs. It doesn't really look like there's any electronics in there though.
 

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this is a question that i would like answered, if anyone can offer a quick answer....no where on the audison website does it say that the bit one takes balanced differential inputs. I would like to tap into my stock hu before the factory amp, and that leaves balanced diff inputs.....so, is it possible to hook up to the bitone, and if so, how do you do it (through the rca in, or the speaker level in?)
 

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this is a question that i would like answered, if anyone can offer a quick answer....no where on the audison website does it say that the bit one takes balanced differential inputs. I would like to tap into my stock hu before the factory amp, and that leaves balanced diff inputs.....so, is it possible to hook up to the bitone, and if so, how do you do it (through the rca in, or the speaker level in?)
I wrote Larry Frederick, tech director for elltromedia usa, HE said it's balanced in ob the RCAs. I asked for the same reason you are asking, but I haven't tested yet.
 

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VP, i imagine going high level after amp to the bitone in the bose G35 would suck right? just my initial impression... it's a lot of money to spend on the bitone if it doesn't actually take the balanced diff in's...maybe i'd be better off with the zapco dc amps....i just liked the bit one as it seems is has more options in the way of processing...

FWIW, VP you have been extremely helpful in answering pretty much every one of my questions i have asked, and for that I thank you for taking the time. Very few others have helped...with a DIY group of people i figured all would be helpful, but i guess since i am going with "mainstream" product selections I am not the right kind of DIYer....

in any case, if i lived closer, i would have loved having you help me with my system...
 

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Ah, you just happened to be doing something I have experience with :) glad to help.

My feeling is that if you go post-amp, you depend on the bitone to knit everything together and you run the risk of the bose amp playing time domain games the bitone can't fix. So if there is a flat full range signal, I always go with it.
 

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well, i think i am leaning to the bit one, so we will see if the unit does indeed accept balanced diff inputs and do it well. once i get everything in ( who knows how long, it's my first in depth install) i will comment on how it works.

thanks again.
 

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Not test bit one yet, but the LRx amp can accept balanced signal based on my test yesterday. So I believe bit one will accept it. Anyway, I will test the bitone two weeks later.

http://www.diymobileaudio.com/forum...g-symbilink-cable-bmw-harness.html#post818935

Now let's make some furhter discussion about the working mode: true balanced mode and compatible mode. True balanced mode double output voltage and reject the noise. compatible mode may only use one signal and discard the other. Does anybody know how to test bitone's (or LRx) working mode?

here is a useful link about balanced signal:
Balanced Line Drivers
 
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