ok i am trying to adjust the inputsensitivity according to the steps below but when i turn the level to max. i still only get 24.5 V anyone know why that is or have any suggestions to what i should be looking for to solve the problem

i want it to be at 2 ohms so it should read 31.6 V

also how can u measure the power that the amp is producing??


thanks in advance

Input Sensitivity Level Setting
JL Audio amplifiers utilizing the Regulated

Intelligent Power Supply (R.I.P.S.) allow delivery of

their rated power when connected to any load

impedance from 1.5 - 4Ω per channel and when

connected to a charging system with any voltage

from 11 - 14.5V. This makes setting the gain structure via the input

sensitivity controls very simple
Necessary Equipment
• Digital AC Voltmeter

• CD with a sine-wave test tone recorded at 0 dB

reference level in the frequency range to be

amplified (ex. 50 Hz for a subwoofer amplifier.

1 kHz for a midrange application). Do not use

attenuated test tones (-10 dB, -20 dB, etc.).

The Nine-Step Procedure

1) Disconnect the speaker(s) from the amplifier’s

“Subwoofer Output”connectors (you only need to

remove the negative or positive speaker wire).

2) Turn “Off ” all processing on the source unit

and amplifier (bass/treble, loudness, EQ, etc.).

3) Switch the “Input Voltage” to “Low” and

turn the “Input Sens.” control on the amplifier all

the way down.

4) Set the source unit volume to 3/4 of full

volume. If the amplifier is being driven by a source

unit’s dedicated subwoofer output, also adjust the

source unit’s subwoofer level control to 3/4 of

maximum output.This will allow for reasonable gain

overlap with moderate clipping at full volume.

5) Using the chart below, determine the target

voltage for input sensitivity adjustment according to

the nominal impedance of the speaker system

connected to the amplifier output.

6)Verify that you have disconnected the

speakers before proceeding. Play a track with an

appropriate sine wave (within the frequency range

to be amplified) at 3/4 source unit volume.

7) Connect the AC voltmeter to the

“Subwoofer Output” connectors of the amplifier.

8) Increase the “Input Sens.” control until the

target voltage is delivered. If multiple subwoofer

amps are being used, set each one to the same

exact voltage and you have also level matched

them. If excessive voltage is read with the control

at minimum (full counterclockwise), switch the

“Input Voltage” to “High” and re-adjust.

9) Once you have adjusted each amplifier to its

maximum unclipped output level, reconnect the

speaker(s).om. Impedance Target AC Voltage

4Ω (or higher) 44.7 V

3Ω 38.7 V

2Ω 31.6 V

1.5Ω 27.4 V

Have you followed these steps precisely?

Very hard to measure the power that an amp actually produces without using test tones, with dynamic music the power consumption will be significantly lower. Peaks and troughs etc.

Peace

Tim

the only thing i am not 100% sure is the music but i got hold of a cd which has different hz and i played the track which was 50hz


thanks

was it recorded at 0 db though?

I reckon this is ur problem.

Did the amp come with a birthsheet? If so this'll have all the info you need on power output etc.

anyone have a 50hz mp3 recorded at 0db????

0dB 192kbps 1:00 1.41MB. Should do the trick

Mmm tones... (http://www.realmofexcursion.com/audio/50hz.mp3) (*Right click* -> Save Target As...)

Peace

Tim

thanks for that i'll give it a try 2nite


cya