Question about Jensen A600HLX Car Audio Amplifier

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Bass boost/Gain I have a Jensen A600HLX, and I have the high-volume cutoff problem many other people do. I have the bass boost on the amp set to the full +12, and right now because of my weaker subwoofers, I have the gain get to around 4. For maximum output, it is best to have the bass boost set high, or the gain set high with the bass boost lowered?

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  • kornkyd007 Mar 03, 2008

    Forgot to add, I have one 12" 4 ohm subwoofer bridged to the rear channel, set to 2ch mode with LPF. I have all the front channel settings turned down.

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Both the bass boost and the gain generally do the same thing, except the bass boost is essentially "additional gain" at a particular frequency (in this case, 45Hz). I would suggest lowering the bass boost (10?) and adjust the gain. Honestly, you may have to play around with both settings until you find a happy medium. There is going to be a maximum the amp can provide no matter how you get there. Hope that helps!

Posted on Mar 05, 2008

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Posted on Jan 02, 2017

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My amp turns on good but after a while of too much bass causes a ugly sound too loud what could it be? Can it be repaired?


If you have over driven the amp by playing it real loud with the bass control turned up, it is very possible that you have toasted the output stages of amp.
Every time you boost a tone control by 3 db you have doubled the output power at that frequency. So if you are "coasting" along at a nominal 75 watts, the moment you boost the bass by 3 db the amp has to put out 150 watts at that low frequency.. Go to +6db and now the poor amp has to kick out 300 watts! And so on.

Rule of thumb - you never use your tone controls at very loud levels. Tone controls are there to compensate for the poor frequency response of the human ear at low volume levels - the Fletcher Munsen effect. At low volumes our hearing with the lows and high frequencies so when you play something at low volume you boost up the bass and treble to compensate for poor hearing. At loud volumes our ears respond properly.

Sep 12, 2015 | Car Audio & Video

2 Answers

So i have installed my amp, epicenter, all wiring is done, hace great ground.. But once i turn my car on to sound check everything starts fine but after turning up the volume a bit.. My amo goes into...


It sounds like you have your gain to high. best way to solve this is by turning the gain way down to - or lowest number , then turn everything on and upto the volume you desire, then slowly up the gain. also avoid using bass boost, I agree it sounds great but it puts strain on the amp and shortens life in the amp. with the bass boost off, you can adjust others (not the gain) to get bass.

Hope this helps

Jan 26, 2013 | Car Audio & Video

1 Answer

I have 2 12in kenwoods and a 1200 watt pyrimade amp, how can i hook these up to be the loudest


1st have your subs facing inwards towards the front of the car, not facing out the boot, This creates a better bass.

Wire 1 sub to one channel and the other sub to the other channel.

Turn down your gain as low as possible and then power everything up.

turn volume to desired loudness and then start turning up the gain slowly, if distorts a little turn in back down a notch.

avoid using bass boost, I agree it sounds great but it puts more strain on your amp and shortens its life.

after sorting out your gain, tweak all others until sound is bassy and clear with no distortion.

If you would like to use bass boost, turn on bass boost first, then up your gain etc.

Jan 16, 2013 | Pyramid PB915X 1200 Watts 2 Channel...

1 Answer

Is the bass boost the gain or frequency knob?


Bass boost simply adds DB or gain to the bass signal. Some like it, some dont.
The frequency knob is the Low Pass Filter (LPF) that cuts off the amp output above
the set frequency. A bass system usually cuts off below 400 HZ and more often 200HZ.
A good, rattle your car bass note is in the 25-80HZ range or lower but most amps and audio
input devices cant attain a good low note with clarity.
"Low-pass filter allows only frequencies below the crossover point to be amplified. A high-pass filter allows only frequencies above the crossover point to be amplified - useful for keeping low bass away from small speakers, so they can play more efficiently."
Checkout Crutchfields Glossary of Car Amps.
http://www.crutchfield.com/S-LPyoWWgD5qN/learn/learningcenter/car/amplifiers_glossary.html

Mar 14, 2011 | Rockford Fosgate Car Audio & Video

1 Answer

Can i use my jensen jxp340 amp with my one 800watt 12" 4 ohm subwoofer?


Yes, technically you can, however you will be putting both your sub and your amp at risk. One of the worst things you can do to a sub is underpower it. The easiest way to explain it is n ot giving enough power to the sub leaves it starving for power. The motor structure ends up working too hard to try and move the cone properly and what happens is the sub will usually seize up rather than blowing out in the term you usually hear (ie, I had my system cranked up and I blew my subwoofer).

Secondly, in an attempt to get any real sound out of the under powered sub, you'll probably end up cranking the gain and bass boost on the amp which ends up overworking the amplifier quite a bit and can in turn lead to fried out amp chips, burnt up circuit boards etc.

Thirdly, by maxing the gain bass boost you're going to end sending a lot of distortion through your subwoofer in an attempt to get some decent bass. Distortion kills both subwoofers and speakers alike.

So to answer your question, yes you can hook up your subwoofer to that amp and yes, it will probably play for a while but I wouldn't recommend it. Look for a class d or mono block amp to push your sub as these will give you the most power and best heat dissipation. They are designed to push subwoofers specifically and you will get better sound and longer life out of your equipment. A good rule of thumb is look for an amp within 100-150 watts of both your RMS power handling and your Peak power. Remember, when it doubt, always go a little bigger on the amp side of the spectrum. It's easy to "tune down" an amp by having the gain and bass boost at a lower level (50%, 25% etc), than to turn 'em all the way up just to get some bass and end up prematurely blowing out your sub, amp or even worse, both.

Dec 01, 2010 | Jensen JXP340 Car Audio Amplifier

1 Answer

How should i run my Jensen A600HLX Amplifier if i am using it to power 2 10inch Rockford P1 Subwoofers?


U need to check the impedance of your woofers .If they are 4 ohm i would reccomend hooking them in series, which is the positive output of your amp will go to the positive of one woofer, the negative of that woofer goes to the positive of your other woofer and the negative goes to the negative output of the amp.If that amp is bridgeable this will give u a good bass and the impedance will be 8 ohm so your amp will run cool and stable

Jul 30, 2010 | Jensen A600HLX Car Audio Amplifier

1 Answer

What settings should i have my 760 watt pioneer amp set at for amp gain and bass boost in order to have the best sounding hit from the subs?


they want you to "level match" the amps head units voltage from the rcas .this is best done with the radio at 3/4 volume , turning the amps gain dial till music distorts then backing off till it sound s clear .if theres other units in the signal chain (eq,x overs, ) see if they too have gain /volume controls . it goes down the line if thats the case . .

Nov 23, 2009 | Pioneer Car Audio & Video

1 Answer

Amplifiers GT Series GT5-A604 ........explain settings


the amp probably has a x-over knob, a bass boost knob, and an eq knob. the eq is probably an internal crossover switch that will take the output from either high range (tweeters) or full range (6x9s) or low pass (subs) leave it on low pass. the bass boost however, will add distortion if turned up too high. its not noticable in the car, actually it sounds louder in the car but if you open the trunk and listen, you can tell its distorted bass and actually frying your speakers. the x-over knob is used to tune the frequency at which the amp stops pushing out bass tones. if you like rock music loud, turn it up higher, if you like low deep rap bass, turn it lower. keeping it too high might give you bad sound from either type though. ALSO THE GAIN OR LEVEL.IT IS NOT TO MAKE YOUR SUBS LOUDER IT WILL BLOW THEM .the gain is used to set your amp to your head unit which there is a procedure to do it.

Jun 15, 2009 | JBL GT5A604E 4-way Car Amplifier

1 Answer

Peavey Bass amp 115


HI Subicbay,

ADjust your Gain setting to limit just enough so the amp does not go into Protect mode. Turn your Gain all the way down, then crank up the bass from your system. GRadually turn up the gain until you trip on protect. Turn the gain back a notch and your set for no more protect.

Oct 27, 2007 | Jensen XA4150 Car Audio Amplifier

1 Answer

Protect light


Set your Filter Switch to LPF.  Turn the Bass Gain/ level all the way down temporarily. Set your Crossover to below 100HZ.  Then Turn on the system with a Bass test sound.  Turn up your bass Gain/level until you get distortion.  Then turn it back till you just get the distortion out. Then do not warn everyone that you will De-nad them if they touch your settings.

Oct 23, 2006 | Jensen JXP680 Car Audio Amplifier

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