498254
26
Zoom out
Zoom in
Previous page
1/28
Next page
4 Channel Amplifier - Applications
MXB-480/MXB-4100/MXB-4125/MXB-4175
One 4 Channel Amplifier in Stereo Mode (Front-/Rear- Speakers) with
One 2 Channel Amplifier in Mono/Subwoofer Mode (Bass Amplifier)
Interconnect cable checklist:
•Connect the INPUT of the 4 Channel Amplifier to the head unit line outputs with good quality
RCA to RCA cables.
• Connect the OUTPUT of the 4 Channel Amplifier with the LINE LEVEL INPUT of the
designated Bass Amplifier (2 Channel Amplifier) with a further RCA cable.
• Connect the Front-/Rear Speakers with the terminal blocks (SPEAKERS / + CH1 -, + CH2 -,
+ CH3 - and + CH4 -) of the 4 Channel Amplifier.
• Connect the Subwoofer with the terminal block (SPEAKERS / + BRIDGED -) of the
designated Bass Amplifier (2 Channel Amplifier).
•The minimum final speaker impedance must not be below 2 Ohms for the 4 Channel
Amplifier, the total impedance of the Subwoofer(s) must not be below 4 Ohms. Too low
speaker loads result in too high heat dissipation and may cause the amplifier run into
protection.
• If you use more than one speaker (Subwoofer), make sure that both are connected in
phase. Incorrect polarity of the speakers results in total loss of bass response.
Caution
Be careful not to connect speaker (-) to the ground or vehicle chassis.
Control settings of the 4 Channel Amplifier:
FILTER SELECT (CH1/2 & CH3/4)
If larger than 20 cm speakers are used, the FLAT position is recommended.
For all smaller speakers (Ø8.7cm - Ø16cm) the Highpass-Position (HIGH PASS) is recommended, which eliminates the
lowest frequencies and protects the speakers from damage. Set the crossover-frequency between 60Hz - 150Hz, depending
of the size of the installed speakers. The Highpass adjustment can be done with the HIGH PASS control.
• In this configuration example the LOW PASS control is not used.
INPUT LEVEL (CH1/2 & CH3/4)
• Turn the INPUT LEVEL controls on the amplifier to 4V position.
• Turn the head unit volume control to about 80-90% of its full setting.
• Turn the INPUT LEVEL controls clockwise until you hear some distortion.
• Then turn back the INPUT LEVEL controls slightly until you can hear clean sound.
BASS BOOST (CH1/2 & CH3/4)
• Turn the BASS BOOST control into “0dB” - position.
INPUT SELECT
• The INPUT SELECT - switch must be in “4” - position.
Control settings of the Bass Amplifier (2 Channel Amplifier):
FILTER SELECT
In 1 Channel/Mono-Mode select the Lowpass-Position (LOW PASS), which eliminates the higher frequencies. The
recommended crossover frequency ranges between 60 - 100Hz, depending on the size and response of the Subwoofer. The
Lowpass adjustment can be done with the LOW PASS control. In this configuration example the HIGH PASS control is not
used.
INPUT LEVEL
see descriptions for 4 Channel Amplifier above
BASS BOOST
• The BASS BOOST - Control increases the bass level at 45 Hz max. +12dB.
Caution! Please use the Bass-Boost carefully. The additional boost may result in clipping or overload.
25
26


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Crunch MXB2125 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Crunch MXB2125 in the language / languages: English, German as an attachment in your email.

The manual is 1,28 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info