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rca's, h/u, amp, hz and subs ect.


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2die 
Member - Posts: 1
Member spacespace
Joined: May 09, 2011
Location: Australia
Posted: May 09, 2011 at 4:18 AM / IP Logged  
I have bought all my gear but yet to install any of it so far apart from the H/U before I realized I had over looked a few things that I should have researched before hand.
I have searched the instruction manuals and also online for the information but none of them provided me with anything that I was looking for.
Just some basic info before I explain what I am having trouble with.
H/U: Kenwood KDC-MP336AX
Amp: Hifonics Titan TXi-4008
Subs: 2 x Response 8" woofer (CW2196)
Problem #1
The amp has a "Level" dial that requires the voltage output from the H/U, the settings on the amp go from 5V - 0.2V but this information is unavailable anywhere.
Problem #2
The manual says a mono signal is required such as a mono signal sub bass crossover, stand alone, or built in to the head unit. Then further explains not attempt to join the left and right RCA to get a monal signal.
Does my amplifier have a mono output even though it has left and right RCA output or would I have to just use 1 side of it connected to a Y adaptor and split the 1 signal to both inputs on the amp?
Problem #3
The LPF on the amp is from 30Hz to 250Hz, the woofers frequency response is 38Hz - 4.5kHz, where would I cut off the LPF or would I just set it to the highest as it is capable of playing 250Hz?
When signing up I saw they are very much against links, although I would have liked to post some to give more information the the units I dont know exactly what is acceptable.
If it helps and anyone requests I could post PDF files or copy and paste specs of each.
Thanks if anyone can help.
i am an idiot 
Platinum - Posts: 13,693
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: May 09, 2011 at 5:00 AM / IP Logged  
The output of your radio will fall within the range of adjustments of that amp.  I can not stand any frequency above around 80Hz coming from my subs.  The crossover frequency will be a personal prefference of yours.  You will have to experiment with it to see what you like. 
ac0j 
Copper - Posts: 121
Copper spacespace
Joined: January 27, 2006
Location: United States
Posted: May 09, 2011 at 7:35 PM / IP Logged  

2die wrote:
I have bought all my gear but yet to install any of it so far apart from the H/U before I realized I had over looked a few things that I should have researched before hand.
I have searched the instruction manuals and also online for the information but none of them provided me with anything that I was looking for.
Just some basic info before I explain what I am having trouble with.
H/U: Kenwood KDC-MP336AX
Amp: Hifonics Titan TXi-4008
Subs: 2 x Response 8" woofer (CW2196)
Problem #1
The amp has a "Level" dial that requires the voltage output from the H/U, the settings on the amp go from 5V - 0.2V but this information is unavailable anywhere.

Not too big of an issue, you can adjust those after everything is up and running so things sound right

Problem #2
The manual says a mono signal is required such as a mono signal sub bass crossover, stand alone, or built in to the head unit. Then further explains not attempt to join the left and right RCA to get a monal signal.

If your Kenwood has a sub out pair of RCA's those will be mono.

Does my amplifier have a mono output even though it has left and right RCA output or would I have to just use 1 side of it connected to a Y adaptor and split the 1 signal to both inputs on the amp?

If it is a monoblock amp, it is mono (I am not familiar with Hifonics)

Problem #3
The LPF on the amp is from 30Hz to 250Hz, the woofers frequency response is 38Hz - 4.5kHz, where would I cut off the LPF or would I just set it to the highest as it is capable of playing 250Hz?

If the Kenwood has a subwoofer output and built in controls, I would set the LPF on the amp at 250Hz and control it from the deck, if NOT, I would set it to your taste. Start at 100Hz or so.

When signing up I saw they are very much against links, although I would have liked to post some to give more information the the units I dont know exactly what is acceptable.

If it helps and anyone requests I could post PDF files or copy and paste specs of each.
Thanks if anyone can help.


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