Another System Diagram, Yawn....

Quasimodem · 08-29-2009, 11:24 PM

Well, if you can stay awake, what do you think of my system I am installing next weekend?

I have everything but the Hifonics MX-2.

It is going in a 09 US 335d with stock Professional Radio.

Comments?

Lowcruzr · 08-30-2009, 09:33 PM

Quote:

Originally Posted by Quasimodem

Well, if you can stay awake, what do you think of my system I am installing next weekend?

I have everything but the Hifonics MX-2.

It is going in a 09 US 335d with stock Professional Radio.

Comments?

Personally, I'd band-pass the stock woofers rather than low-pass them. Take out the extremely low end from them (that they don't produce well anyway) and utilize them for adding punch & kick. A 80-300hz band-pass filter would work wonders as you have a nice sub set-up for the extreme low-end notes. Just my two cents.

BTW, why five signal wires going to the mx-2? Center channel?

VP Electricity · 08-30-2009, 11:03 PM

He duped the LF +.

What is a Hifonics MX-2? Does it have balanced in?

I agree, and think that running OE underseat subs off of OE amp works fine without a high-pass,but running OE woofers off of a new amp has caused OE woofer failure a few times, and I would not recommend it. I would high-pass them at 50.

Quasimodem · 08-31-2009, 07:48 AM

Great points, I am contacting Hifonics to see if that unit accepts differential inputs, if not maybe I will have to switch to an Audiocontrol product.

I plan to use the line driver (either Hifonics or Audiocontrol) to split the Front signal from the HU into Front and Rear low level signals for my 4-channel amp. Does anybody see any problem with this?

I suppose if I used a 6-channel output line driver, I could output the sub channel directly from to my sub amp and then use the 3rd and 4th channel low pass filter to effectively bandpass (along with the high pass filter of my 4-channel amp) the underseat subs ....

So maybe I could go with an Audiocontrol Matrix or a 6XS.

I took out the accidental duplication of the "Left Front - " line out.

VP Electricity · 08-31-2009, 09:50 AM

Some multichannel line drivers don't let you get 6ch out with only 2ch in - so check.

The idea of using one as a "buffer amp" works and I've done it before. I know Arc and Rockford make devices that could work too.

Can you afford a DQXS? Get all that xover-ness and an EQ?

Technic · 08-31-2009, 10:57 AM

The Matrix can take a 2-channel input (at CH3) and produce 6-channel outputs by placing its internal jumpers at their correct slots.

Quasimodem · 08-31-2009, 02:28 PM

Quote:

Originally Posted by Technic

The Matrix can take a 2-channel input (at CH3) and produce 6-channel outputs by placing its internal jumpers at their correct slots.

Right, so if I decide to skip the sub pass through on my 4-channel amp and just go directly from the line driver to the sub amp, that would favor the the Audiocontrol Matrix over the Hifonics MX-2.

I sent an email to Hifonics, but I got a question back asking for the layout of the differential inputs from the OEM head unit. I would have thought Hifonics would know if their line drivers worked using differential outputs directly from a BMW OEM Professional radio.

VP E,

I will keep in mind the DQXS, sure looks nice, but I have to make my car payments too ya know.

VP Electricity · 08-31-2009, 04:24 PM

Quote:

Originally Posted by Quasimodem

I would have thought Hifonics would know if their line drivers worked using differential outputs directly from a BMW OEM Professional radio.

Considering that John Studley apparently OWNS a BMW, I would have too... but I think he has an E46, and NO manufacturers are doing a good job on this score...

dannyboy052875 · 09-01-2009, 08:24 AM

hey i got a queston? i am trying to run a line level for aftermarket amps and subs where do i splice the wires to ??? after the amp going to the speekers,or before the speaker imputs on the stock amp thanks ... help please!!

VP Electricity · 09-01-2009, 11:17 AM

Don't threadjack

, and it's answered in many thread on the forum... finding the wires isn't all you need to do...

Quasimodem · 09-01-2009, 04:13 PM

So I have decided to go with the Matrix, I can always put in an EQ later if I feel the need. I may also try switching the OEM amp to the underseat subs too. Thanks all.

Dannyboy, if u splice into the preamp inputs (which is best because they are flat) keep in mind that they are differential and your amp or line driver must be compatible.

08-29-2009, 11:24 PM	#1
Quasimodem Colonel 147 Rep 2,383 Posts Drives: 335d Join Date: Oct 2008 Location: California iTrader: (0) Garage List 2009 335d US [0.00]	Another System Diagram, Yawn.... Well, if you can stay awake, what do you think of my system I am installing next weekend? I have everything but the Hifonics MX-2. It is going in a 09 US 335d with stock Professional Radio. Comments? Attached Images
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08-30-2009, 11:03 PM	#3
VP Electricity Brigadier General 289 Rep 3,201 Posts Drives: F34 xDrive Join Date: Jan 2008 Location: portland oregon iTrader: (3)	He duped the LF +. What is a Hifonics MX-2? Does it have balanced in? I agree, and think that running OE underseat subs off of OE amp works fine without a high-pass,but running OE woofers off of a new amp has caused OE woofer failure a few times, and I would not recommend it. I would high-pass them at 50.
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08-31-2009, 07:48 AM	#4
Quasimodem Colonel 147 Rep 2,383 Posts Drives: 335d Join Date: Oct 2008 Location: California iTrader: (0) Garage List 2009 335d US [0.00]	Great points, I am contacting Hifonics to see if that unit accepts differential inputs, if not maybe I will have to switch to an Audiocontrol product. I plan to use the line driver (either Hifonics or Audiocontrol) to split the Front signal from the HU into Front and Rear low level signals for my 4-channel amp. Does anybody see any problem with this? I suppose if I used a 6-channel output line driver, I could output the sub channel directly from to my sub amp and then use the 3rd and 4th channel low pass filter to effectively bandpass (along with the high pass filter of my 4-channel amp) the underseat subs .... So maybe I could go with an Audiocontrol Matrix or a 6XS. I took out the accidental duplication of the "Left Front - " line out.
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08-31-2009, 09:50 AM	#5
VP Electricity Brigadier General 289 Rep 3,201 Posts Drives: F34 xDrive Join Date: Jan 2008 Location: portland oregon iTrader: (3)	Some multichannel line drivers don't let you get 6ch out with only 2ch in - so check. The idea of using one as a "buffer amp" works and I've done it before. I know Arc and Rockford make devices that could work too. Can you afford a DQXS? Get all that xover-ness and an EQ?
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08-31-2009, 10:57 AM	#6
Technic Lieutenant General 2288 Rep 13,001 Posts Drives: 2021 i3S, 2024 i4 M50 Join Date: Apr 2005 Location: Florida iTrader: (18)	The Matrix can take a 2-channel input (at CH3) and produce 6-channel outputs by placing its internal jumpers at their correct slots.
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09-01-2009, 08:24 AM	#9
dannyboy052875 New Member 0 Rep 5 Posts Drives: bmw 328i jet black Join Date: Aug 2009 Location: WAHIAWA HI iTrader: (0) Garage List 2007 328i [0.00]	queston ????? hey i got a queston? i am trying to run a line level for aftermarket amps and subs where do i splice the wires to ??? after the amp going to the speekers,or before the speaker imputs on the stock amp thanks ... help please!!
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09-01-2009, 11:17 AM	#10
VP Electricity Brigadier General 289 Rep 3,201 Posts Drives: F34 xDrive Join Date: Jan 2008 Location: portland oregon iTrader: (3)	Don't threadjack , and it's answered in many thread on the forum... finding the wires isn't all you need to do...
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09-01-2009, 04:13 PM	#11
Quasimodem Colonel 147 Rep 2,383 Posts Drives: 335d Join Date: Oct 2008 Location: California iTrader: (0) Garage List 2009 335d US [0.00]	So I have decided to go with the Matrix, I can always put in an EQ later if I feel the need. I may also try switching the OEM amp to the underseat subs too. Thanks all. Dannyboy, if u splice into the preamp inputs (which is best because they are flat) keep in mind that they are differential and your amp or line driver must be compatible.
	Appreciate 0 Quote