Question about Tomtom GO 700 GPS NAVIGATION BRAND ONLY $9.95 SHIPPING

1 Answer

Connecting speakers I have a qsc rmx 1450 amplifier and i have to pair of speakers, one pair is 8 ohm and the other pair is 4ohm. Questions 1. Can I connect the 8ohm pair to one channel and the other 4ohm pair to the other channel ? 2. How should I connect them in series or in parallel ? Thanks JPDuque

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 98 Answers
Re: Connecting speakers

I have never heard of this brand of amplifier.. but NEVER hook up unequal ohm loads to a amplifier. the only way i could think to do it would be to hook up 1 of each sub on each side... what way you are spreading out the ohm load equally on both sides but again if you dont do your math and you run too low of a ohm load you WILL smoke that amp..

Posted on Aug 21, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

How to wire a 4ohm sub woffer to a 2ohm stable?

First you need two 4 ohm speakers or one Dual voice coil speaker. you wire the speakers in parallel bringing the total impeadence to 2 ohms. The amplifier is what has to be 2 ohm stable...check your technical specs on the amp to see if its stable at 2 ohms...not all are. check this

Jul 17, 2011 | Car Audio Receivers

1 Answer

I have a Sony CDX-M30 Marine Stereo that when the volume is turned up over 20, it cuts off, then comes back on and if you don't turn it down, it cuts off again. Recently, it only has to be around...

One possible cause is a mismatched speaker system. Most stereo equipment specifies 8 ohm speakers to match the 8 ohm amplifier output resistance. A well known electronic formula states maximum power transfer occurs when the resistance in and the resistance out are equal. When there is a mismatch, more power is required to obtain the same sound pressure levels. By turning the volume up higher to do this, the electrical requirements to drive the speakers at that level may be exceeding that which the amp can provide. When this happens, the amp shuts down due to overload. Continued operation in this condition can cause permanent failure.

Another possible cause is the power requirements of the speakers to be driven properly. Larger speakers require more power to move the speaker coil and and cone. Connecting a speaker that requires 10 watts to be driven to an amplifier that provides up to 8 or even 10 watts will require that the amp be operating at 100% of capacity. An amplifier run like this will have a short life.

Connect speakers that match the amplifier's impedance requirements (8 ohm types are pretty standard / common) and will operate with the amount of power (in watts) that the amp can supply. Make sure you're comparing watt ratings in similar units. "P-P" (Peak to Peak), "Peak" (or Max") and "RMS" are typical terms. RMS is the is the most common standard used, but as you'll see below, some manufacturers like to use different units to make their products seem to have more power than they actually do. You can convert easily between the terms like this:

200W P-P equals 100W peak, and also equals 71W RMS

"Peak" is 1/2 the value of "Peak to Peak" (P-P) and "RMS" which stands for Root Mean Squared, is 70.7% of Peak. 200W P-P sure sounds like it's more than 70W RMS - doesn't it? It's all pretty simple once you know. Lastly, the fictional unit "Music Power" can be anything really, but is often either Peak or P-P values. It's just more smoke and mirrors by some manufacturers.

I hope this helps and good luck. Please rate my reply. Thanks!

May 12, 2011 | Sony CDX-C5005 CD Player

2 Answers

I Put two new speakers in my car an they played for like 5 minutes an then shut off an my cd player started saying protect an wont play. how can i get it working again?

Protect means the speakers are drawing too much current. Recheck your installation to make sure the wires are not shorting to each other or to the chassis. If the wires look good, check the impedance of the speakers using an ohmmeter. Anything less than 4 ohms is probably a bad speaker, but compare your readings to the spec on the box. Please let me know if you have more questions, and thanks for using FixYa.

Apr 29, 2011 | Kenwood KDC-MP232 CD Player

1 Answer

My kenwood headunit is saying protect and i dont know how to reset it and no wires are touching how do i fix this

Hi, this is usually caused by a short in one of the speakers or the speaker wires. Take the connector off the head unit and use an ohmmeter on each pair of speaker wires to check impedance. If impedance is less than 2 ohms on any pair of wires, check the speaker impedance for that pair. If the speaker impedance is low, replace the speaker--otherwise replace the wires. Please let me know if you have any questions, and thanks for using FixYa.

Mar 13, 2011 | Kenwood Kdc-mp445u Car CD / USB/ MP3...

1 Answer

I am trying to install my xtant 604x after i just had it sent out and repaired. I have 4 rca's coming from the head unit wired to the amp as FL, FR,RR,RL. The front speakers connected to the front output...

CLICK HERE for your Owners manual in PDF format
CLICK HERE for your Installation Guide in PDF format

As we agreed in chat - you are going to run your 4 channel amplifier as follows...

Front Channels of amplifier will run left and right independently.
Wire up the left speakers in parallel all + together and all - together.
This will yield a 2 Ohm load.

To the Same with the Right Side speakers - on the FRONT Right channel of the amplifier.

Now you have a 2ohm stereo load on the FRONT channels of your amplifier.

And using the BRIDGED nomenclature on the REAR channels of your amplifier - wire up your 4ohm sub mono.

Here is a crude drawing for a visual


Thanks for using FixYa - a 4 THUMB rating is appreciated.

Sep 05, 2009 | Car Audio Receivers

1 Answer

Wiring for running 4 speakers from amplifier

I asked about wiring up 4 speakers from oe amplifier....not about Tom Tom?

It does not inspire me with confidence in your abilities if you get confused between customers and their questions, so I will look elsewhere for answers.
Thanks anyway

Jul 03, 2008 | Tomtom GO 700 GPS NAVIGATION BRAND ONLY...

1 Answer

Speaker wiring

No degradation. The smaller the ohm, the better the signal ( least resistance ). You and your system should be fine.

Oct 23, 2007 | Tomtom GO 700 GPS NAVIGATION BRAND ONLY...

1 Answer


Make certain that each ouput channel from the unit is driving no more that 4 ohms each. If you have more than one speaker attached to an output then be sure they are wired in series NOT parallel. Two 4 ohm speakers in series is an 8 ohm load and the same two speakers in parallel is a 2 ohm load. If the speakers are dual voice coils then you must treat each voice coil as if it were another speaker when it comes to wiring.

Aug 16, 2007 | iLO XM-MP3-CD Car Stereo

Not finding what you are looking for?

Related Topics:

57 people viewed this question

Ask a Question

Usually answered in minutes!

Top Tomtom Car Audio Receivers Experts

xxxxxx xxx

Level 3 Expert

4679 Answers


Level 3 Expert

56836 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Tomtom Car Audio Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides