Gain level on alpine MRP-F240 amp

[Johnnytanki]

Hi all,

 

Me newbie in car audio..

 

My set as below:

 

Clarion 846 HU

Alpine MRP-F240 amp

mb quart component front spk

infinity 3 way rear spk

 

I had been trying to tune my amp but i noticed even when i set the gain to the min or to max..there is not very much difference in the sound being play out..

 

However i noticed when i tuned the bass eq to more than mid level..the bass of the rear become very bommy.

 

I had been following the manual to tune the amp. As per manual, tune the gain of the amp to min and turn the vol of HU to a reasonable level till the sound distorted. Then lower the volume of the hu by one level. Next tune the amp by increasing the gain till the sound distorted and drop by one level.

 

Can any bro highlight to me what can you expect when you tune your amp gain from min to max. I do hear some difference but not very big..can tht be due to my amp is only a 40w rms per channel? Please advise . Thanks

[Newkid]

I am using Alpine MRD-M605 (400W RMS at 4 ohmn) monoblock to drive a 12" infiniy perfect sub woffer enclosed in a non-ported box. Apparently the bass is boomy and not sharp. I was told that it is b'cos the amp is not powerful enough to drive the sub. Is this true? what cld be the casue if not true? thanks.

[Kwongwing]

Bro,

Not all amps are built equal, so your question with no specifics is very difficult to answer off-hand unless there is someone around using the exact amp you r using.

 

Apart from that, the gain control on the amp is in fact not a "gain" but an attenuator. Think of it as a water tap - at the maximum setting it is letting all of the signal strength coming from the HU output to pass on to the actual amplification stage of the amp to be "boosted before going on to the speakers.

 

Now when one adjusts the amp's gain control, it is to make sure that the HU signal coming is in in synch with the operating band width of the amp's capability.

 

Your particular amp's gain control may be operating within a narrowe r bandwith that's all - so long as the HU signal going through pass the gain control is clean and undistorted, and your amp is able to accommodate the signal strength, then its OK.

 

If your amp's gain control is easily accessible, come by our regular ICE meeting and we can try to help and check it out for you.

[Johnnytanki]

bor...thanks alot for your advise...will try to come for one of your meeting if i have the time..so that can have my ICE tune to the max performance