Question about Boston Acoustics GT-50 Car Audio Amplifier

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Swapping 2 amps for 1 amp.

Would you suggest running 2 amps, one being a 4 channel for front and back speakers ,and a 2 channel bridged for a 10 in sub. Or possibly going to a single 5 channel amp. i have a 93 gmc extended cab p/u truck . I already have all the wires and rca cables in place for the 2 amp set up , but was really wanting to simplify the set up and save some space, though not a whole lot. i was running a rockford fosgate 4 channel and an mtx 2100 2 channel. thought about going to kicker 5 channel. any suggestions on a good quality 5ch for a decent price somewhere between 2 and 300 dol.

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You will get a Lot better Results with the 2 Amp. Setup. I have 3 in my 95" Silverado and Mounted them Under the Back Seat (Xcab) Works Great! Please Rate My Response! Thanks!

Posted on Feb 03, 2009


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Do you bridge a 850.4 four channel amp when it is 2 ohm stable and ur subs are wired up as series/ parallel and there 2 ohm dual voice coil speakers

If you wire 2 ohm dvc speaker parallel that would give you a 1 ohm load. If your amp is only 2 ohm stable that would not work. You would have to wire the speaker in series giving you a 4 ohm load. Then you can bridge the 4 channels into 2 with each speaker running at 4 ohms.
If you want to run a 2 ohm load use all 4 channels on amp and speakers. No need to bridge.
For 2 ohm DVC:
Parallel = connect both + and - together. = 1 ohm
Series = connect + from 1 channel to - from the other channel. = 4 ohm.

Jul 06, 2014 | Car Audio & Video

1 Answer

Which amplifier is best suitable for me to use?

This really depends on the setup you intend to create in your vehicle.

The Amplifer (amp) needs to be matched to the speakers you intend to run.

As a rule of thumb, the power of the amp shouldn't exceed the max. power of the speaker (this may damage your speaker). Instead, the amp's RMS output power should be at 75-100% of the speaker's RATED (RMS) input power. NOTE: this must NOT be confused with max power.

Ideally, you want to run each speaker with its own amp channel.

A subwoofer will usually require a hi-power single channel amp, or a 2 channel amp, bridged into 1 (to increase power output required for the sub).

Here are some examples in simpler terms:

1 channel (hi power) amp can run a subwoofer.
2 channel amp can run 2 speakers, or 1 sub (bridged).
4 channel amp can run 4 speakers, or a combination of 2 spkrs + 1 sub (bridged), or perhaps 2 subs (bridged).

Hope this makes sense.

Feb 27, 2013 | Car Audio & Video

1 Answer

JL Audio Amp. My amp all of the sudden started cutting in and out. It's an older amp and I've never had issues with it before. I've checked all the wiring and the fuse it all seems fine. Any...

you need to determine what impedance the amp is running at ,how many spekers ,most 2 channel amps will only run 2 4 ohm subs per channel and only 1 4 ohm speaker in bridge ,Basically if you have 2 4 ohm speakers bridged at the amp it will usually cut in and out .Some amps will not do this for a while and will work for a while at low impedance but once they get older and hot and cool off many times they will then only work for the intended ohm load ,Do you have 2 speakers ,if so make sure 1 is on left channel and 1 is on 2nd channel (should not cut off ) if it is a mono amp ,make sure you are only running 2 4 ohm subs and not dvc speakers (these will run 1 ohm and shut the amp down ) there are ways of wiring more speakers or dvc speakers ,I can explain but I need to know what product you have .

May 07, 2012 | Car Audio & Video

1 Answer

What is the best way to wire four 6" 55 watt

My advice would be to connect the front speakers and the sub woofer to the amplifier and run the remaining rear 2 speakers from the headunit. This way you dont stress the amplifier to run on two different loads at the same time and still maintane control over your system. Bridge your sub woofer on chanel 3&4 and do not forget to set the LPF for chanel 3&4. If your speakers are not components in the front set the HPF on chanel 1&2 to roughly 60 to 80 Htz.

Feb 10, 2011 | Clarion APX490M Car Amp

1 Answer

Phoenix gold MS-2250. Can I run 2 DVC kicker L7s bridged at 1ohm without problems? Trying to get the most power I can. I'm running a 200 amp altenator with 0/1 gauge power wire and 10 farrad cap block. Do...

for better power yes one ohm but amp must be 1 ohm stable.and both subs will have to be 4 ohm subs to get the 1 ohm needed .If its a class D amp both speakers outs are bridged internally so either is ok to use look see if there is a bridging line on speakers that runs from one side to other and will say bridging. if not any side will work.a manu would help you find yours or you can look one up

Dec 20, 2010 | Phoenix Gold Car Audio & Video

1 Answer

I'm having problems getting full power to my sub.

when bridgeing an amplifier it always sees half of whatever load you have on it, so if you have a 4ohm speaker when it is bridged the amp will see 2ohms, so yes you can bridge the 4 ohm speaker

Mar 05, 2009 | Bazooka ELA500.1 Car Audio Amplifier

1 Answer

I'm having problems getting full power to my sub.

A 2 ohm stable amp should be able to be bridged to 1 ohm (consult owner's manual for bridgability), but a 4 ohm speaker is a 4 ohm speaker and would need to be parallelled with another 4 ohm speaker to provide a 2 ohm load.

Mar 05, 2009 | Car Audio & Video

3 Answers

How would i conect a ep2500 amp two 2 subs @ 4 ohms, or 8ohms

hey" i got 2 behringer 2500 amps and i have 2 peavey speaker that are 4 ohms 2000 watts eachand want to mono the amp separte,and i want to run 1 amp to each speaker so can you help me?

Nov 26, 2008 | Behringer EUROPOWER EP2500 Amplifier

1 Answer

How many speakers can I use?

This should work if channel 3 & 4 are bridged at 4 ohm.
channel 1 should be stable at 2ohm
channel 2 should be stable at 2 ohm
You can hook up the right side speakers together ( + with + and - with - ) . same thing with the left side. this will give you 2 ohm each channel. this will cause your amp to run hot (this might be tuff on the amp). It will give you right (2 speakers) and left ( 2 speakers ), no front and rear adjustement if you need to balance your sound. I think you should be better buying another amp for your sub and take your 4 channels for your 4 car speakers. this amp as a rca output that can feed the other amp ( sub amp ). it is possible to do it.

Good luck

Nov 11, 2008 | Alpine MRP-F250 Car Audio Amplifier

5 Answers

Wiring Diagram for Sony car amplifier XM-554ZR

You can download the installation manual from the link below: It has the following diagram plus other hookup info... Please update the question & let us know if the information given was useful to you - Good Luck!

Aug 14, 2007 | Sony XM-2150GSX Car Audio Amplifier

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