I would like this to power 1 6.5 inch bazooka tube in my car for a little added bottom end. its a 100 watt 6.5 sub. and will run on 12 v. will this work in a car audio application. and can i use hi power inputs or do i need a high input to RCA boc.
This will work fine with a 12VDC power source but it will require a line level (RCA) type input.
Date published: 2014-09-02
Can i install this in my car? Most cars have 12.5 volts with the engine off and 14.5 volts with the engine on. Will I run into any problems?
Yes this will function perfectly fine in a vehicle.
Date published: 2014-09-03
do you have eny mini amps like this for desktop type?
This and all other Lepai and small Dayton brand amplifiers are designed for desktop use. It resembles a car amplifier, but it is not one.
Date published: 2013-12-19
Concerning LP-168HA amp (20x20w +78w sub out) Can I use a laptop power supply rated at 15 watts and 5 amps?
As long as the power supply falls within the voltage range of this amplifier it will work. There will likely be no noticeable difference in output between a 4A and 5A power supply.
Date published: 2013-12-04
Max line level input signal for RCA channels for this amp?
What is the max line level input signal voltage for this amplifier for each RCA input? Im running each RCA input with 1.2V off my macbook pro's 3.5 mm output jack (Macbook is the Pre Amp). If I get a line driver and boost the signal to say 4V per channel should this help with getting the amps temps down by using less gain on the amps? Im also using 15V 8A switching regulated power supplies for each amp and both amps are seeing 8ohm loads on all outputs. I have an SMD DD1 to check for distortion and the line driver I'm thinking of using has a Signal to Noise Ratio of 96 which is good, and is capable of 10V per channel. Sorry for the long post just want to get as much info as possible out there for my set up, so I don't damage the amps with to high of an input voltage. Thanks for the help.
I would not exceed 2 volts/ channel input signal and 1 power supply per amp.
Date published: 2013-10-14
How to Connect to a powered sub with Sub-Out
I'm wondering how I can connect this amp with the sub-output to a powered subwoofer, specifically the Dayton Audio SUB-800 8"The sub has high level in and outs but I want to make use of this amp's sub out. I'm assuming I need to wire from the amp to the line-level inputs on the sub.
Simply go to high level inputs on your sub woofer.
Date published: 2013-10-09
will this have the full 40W and 68W at any ohm load
No. The chips used in this amp are incapable of putting out that sort of power, regardless of what power supply you are using. That is not to say this amp is unusable, or even that it isn't good. It may be great for specific applications, but it is not the sort of powerhouse that the specs claim.The satellite channels use a TDA7266S chip which realistically may put out at 6 watts @ 8 ohms, 12 watts@ 4 ohms, and maybe (a very ragged) 18 watts @ 2 ohms each. The sub channel uses a TDA7256 chip which with 14.4 volts input (the max) is reported to output 22 watts @ 4 ohms and 30 watts @ 2 ohms.Note: With 2 ohm loads all around you would be looking at a total of 66 watts. Considering that this is A/B topology, you would need to supply over twice that amount of power to cover efficiency losses. So, you might be able to get the full 66 watts of output with a 14.4 volt 10 amp power supply. However this would be absolutely pushing the limits of this amp, and sound quality would suffer. Not to mention the cost of your power supply would likely exceed the cost of the amp.
Date published: 2013-11-26
How can I hook this up to 12v sealed lead acid battery?
Can someone please explain to me how I could hook this up to a 12v sla battery? I want to use this in a portable application, but am unsure how to hook it up to the battery. Thanks
You will have to use a DC plug in order to wire this to an SLA battery.
Date published: 2013-05-22
Anybody else have issues like these?
I bought this amp about 4 months ago. It works, but turning the amp on and off causes the woofer to "suck in" and "push out" respectively, probably close to a quarter inch in either direction and on 4 and 8 ohm woofers. Inconveniently, I just don't turn it off if possible.Second, I bought 2 Bluetooth modules, 1 that I intended to use with this amp, using the USB jack for power. The modules work well when plugged into a Motorola phone charger, but when either are plugged into the charging jack on this amp there is a noise, a moderately high pitched buzzing emitted from the speakers. It does it with either module and neither module does it with the phone charger. The wired inputs work fine, just wanted Bluetooth freedom. I contemplated buying another amp just to see if this one is "defective", but they're back ordered. I really like this amp for its intended purpose, but I don't want to damage the woofer, and the buzzing is not acceptable.
That pop from the speakers is normal and shouldn't damage anything, nothing to be concerned about but I don't know what to tell you with the USB power issue. I don't use the USB port on the amp.
Date published: 2013-04-29
Still confused on how to connect sub
If you are only connecting one sub to this amp I've heard people say you are supposed to connect both + leads of the amp to the single sub + and the same with the - connections. I've heard other people say that you just hook up either the left or the right.This isn't a bridged channel is it? If so, wouldn't you hookup the + from the left channel and the - from the right?The manual of this thing is all chinese and not very helpful...
Don't be confused by the two sets of output terminals marked SUB, they are tied together, so whether you connect one set or both, the result is the same. They are not left and right outputs, just duplicate mono outputs. The only reason there are two is because it let the manufacturer get away with using existing 4-channel terminal strips, instead of putting in 1 stereo strip and one mono strip. This is handy if you are using two subwoofers though.
Date published: 2014-10-26
how do you hook up the subwoofer?
There appears to be two hookups. Im confused on how to hook up a subwoofer.
This amp consists of 3 channels or three individual power supplies. Two of them go to the left and right for the speakers. Then the third channel is split between the left and right on the sub out. So if you wanted two subs to be powered with a total of 68 watts, you could. But at the same time you can run the sub off of the left or right side and still get the same power output of 68 watts. The amp just gives you a left and right for the sub out but you don't get more than 68 watts.
Date published: 2014-07-12
Can a 15 volt 8A AC to DC switching power supply be used with this amplifier ?
I read the post about the caps exploding if they reach 16 volts and some people say 14.4 volts 5A is the max, but my amps came with 15Volt 3A. So I know 15 volts is safe but what is the effect of running it a 8A?
There really is no maximum amperage you can supply. The amp will only draw as many amps as it needs to (when it is working properly anyway).So, with your 15 volt 3 amp supply there is only 45 watts available to the amplifier. (Volts * Amps = Watts). So, no matter what, the amplifier will not be able to put out more watts than this. With a 15 volt 8 amp supply there would be 120 watts available to the amplifier. This should allow the amplifier to play at louder volumes before distorting. More noticeably it should and allow for peaks, like bass drum hits, to play louder, and sustained bass to play without "running out of gas" as quickly.Remember, the stated power output of this amp is very inflated.The satellite channels use a TDA7266S chip, which is rated at 5 watts per channel @ 11 volts input power into an 8-ohm load. Maximum output power is around 12 watts per channel with 4 ohm speakers.The sub channel uses a TDA7256 chip which with 14.4 volts input (the stated max) is reported to output 22 watts into 4 ohms.So, 120 available watts will be more than this thing will ever be able to use.
Date published: 2014-07-12
2x40watts or can I Bridge for 1x80watts?
Im using this amp for a 3 driver speaker cabinet project for a small garage gym, the 12in Sub is wired using both the amps sub outputs. Now originally the cabinets 3 way crossover( 900Hz and 2800Hz) had the sub going to it but I had to rewire it just to go to the amps sub outputs (I had no other choice). When I did this my midrange didn't work at all. After being stumped for days as to why the midrange quit working, I ran a wire from the subs + to the subs - on the 3 way crossover and now the midrange works and sounds great. So my main question is with the 2x40 watt outputs for the L or R on the amp, if I'm only using one channel will the amp sense that, and send the 80 watts to only the channel I have hooked up or will I only get the 40W still? If I only get the 40W from one channel I have hooked up, is it safe to bridge both channels to get a 1x80W channel?
The amp is stereo and non-bridgable. If you use one channel you get 40 watts and the other channel goes unused. Some amps can be bridged, And there are mono amps. Take a look through PE if this amp isn't a match for your needs.
Date published: 2014-08-31
battery power source
This may be a dumb question, but can you run this to a 9volt battery or a 12 volt lead acid battery? how long would it be able to run off of each?
You can connect it to car battery if that was the question.
Date published: 2014-07-12
truely 2 ohm stable on the stereo channels?
howdy everyone. i bought some speakers on closeout and one of these to make a portable mp3/cd boombox and was curious if the stereo output channels are really able to be stable into 2 ohms? i want to have three of the aura 6's per side so actual load would be 2.66 on paper but metered was right at 2 ohms (trio or 6.6 Ohm in parrallel). my build is a week away or so and i have time to get some answers, but the specs for this say it IS 2 ohms stable stereo but i saw no one verifying on here or asking.
Yes this will handle a 2 ohm load.
Date published: 2014-07-12
1x68Watts Sub Output
Does that mean if Im using only one 12 inch sub, and i hook it up to the amps right sub output that the sub is only getting 34 watts going to it?
The subwoofer output on this amplifier ais one single output that has two parallel connections. You can hook up one 4 ohm sub or two 8 ohm subs, either way will provide 68 watts of power.
Date published: 2013-01-03
Bi-Amp To run 2 sattelites + A sub?
Can you hook up the channels of 2 of these units in parallel to achieve80w Max + 132w max @ 4-8 Ohms per channel?
No, that really isn't a bi-amp. If a very small shift in phase of signal occurred damage to either amp or speakers could result. I would try one unit to see if your sound level is acceptable. If not, you could use this unit as a pre-amp. To drive a pair of larger amps by turning it down. One amp you could bridge for max power to the sub and the other in stereo to the satellites.
Date published: 2012-11-16
Using two mini-amps
Is it possible to use a channel on another mini-amp to connect this one just for a subwoofer?Such as: TV to Mini-Amp(1) with channel one powering bookshelf speakers, and channel two going to this Mini-Amp(2) with this one just powering the subwoofer.Would this blow something up?
You can use the channels of your amps any way you like. However, bass requires the most power. It's best to have a larger dedicated amp for a subwoofer.
Date published: 2012-09-18
What to expect from this?
2 x Tang Band W3-881SI 3" Speaker - 8 Ohms1 x Aura NS6-255-8A 6" As Woofer - 8 Ohms*Will be a nice System for PC?*A extra Crossover will be really necessary?
The sub output is very impressive. It is a serious 68 watts. I've powered a hundred watt ten inch sub and it'll almost peak out the sub itself. There is a built in crossover for the sub output that u can control which is really handy. It's a great buy and hard to go wrong with.
Date published: 2012-09-16
Could this be used as a bass amp?
Could I use this amp with an Ashbroy Bass (piezo pickup w/ pre-amp)? I would be in a small box with a small woofer & tweeter or possibly exciters. It would only be for practice and save me from hauling a bigger amp.
Yes. Although there is no information directly about the sensitivity of the inputs, you are driving it with a preamp, so your bass should be able to drive the amp to full output.Your suggested use is far away from the intended use of the amp. You don't seem to plan to use the sub out or both sides of the stereo amp. But I think you see that the amp is small, extremely inexpensive, comes with a power supply, and according to reviews here, is surprisingly OK-sounding. If you don't expect more than a low volume practice amp, you have a clever (but a little odd) solution.
Date published: 2014-08-31
Could this handle two 8 ohm speakers per side and a 4 ohm sub, or would the load be too low?
if this helps I'm using Bose 151 speakers on the L/R out and the aura pro shaker on the sub out.the Bose are 4 ohmthe aura are 4 ohm
Date published: 2012-07-30
Is there a headphone jack output (3.5mm)?
I'm looking to buy a small amp that will basically convert RCA output from my turntable, to a 3.5mm output that is compatible with my computer speakers and headphones. Will this amp be able to do that?
No, the 3.5mm jack on the front of this amplifier is an auxiliary input for iPods, cell phones, MP3 players, and the like. I'd suggest something like the Topping I've linked below.
Date published: 2014-07-12
sub out to DVC speaker?
can I use the two outputs for the sub to 2x 4ohm DVC? or should I run one output and wire the DVC sub in series for mono 8 ohm?
You might be better off to series wire them so that you can get the most watts out of the amp. You might want to consider just wirering one sub instead of two. Maybe not, just a matter of testing things out.
Date published: 2012-07-17
What are the characteristics of the crossover?
In the comments people say the .1 channel crossover doesn't attenuate higher frequencies. Has anyone measured the crossover or does anyone know the slope? Also, does the crossover have an effect on the stereo channels?
The subwoofer channel has a variable, 1st order low pass crossover. This crossover does not act as a high pass for the stereo channels, so no worries there.It will attenuate the sub channel 6db/octave below the point you choose, between 50 and 200Hz. So, if you choose 200Hz it will be attenuated 6db at 400Hz, and 12db at 800Hz. If you choose 50Hz it will be attenuated 6db at 100Hz and 12db at 200Hz.If you need a steeper curve, you can run an inductor in series with the woofer. This will give you the net effect of a 2nd order low pass crossover, 12db/octave. For a 4 ohm woofer I would use a cheap 3.5mH inductor, like the one below.
Date published: 2014-01-11
Can you use the sub outs to connect to a powered subwoofer?
Date published: 2012-02-09
can this lepai's sub out power a single aura ast-2b-4 pro bass shaker?
Yup. it wud be perfect for that.
Date published: 2014-05-28
How many watts RMS am i gonna get with the subwoofer output?
Im kinda confused and i want to know how many watts using the power supply it comes with.
Probly about 45-50. Enough to hear but not enough to feel.
Date published: 2012-02-18
Is the USB port for audio as well as charging?
NO. Not on this amp. Apparently USB is provided as charging port only.
Date published: 2012-08-03
Part number of amp chip
What is the part number of the main power chips inside this amp?
The 2 stereo channels use a TDA7266S amplifier chip and the sub section uses a TDA7256 chip.
Date published: 2014-01-11
What is the best power supply for getting max power from this amp?
What is the optimum power supply?
Well according to it's power requirements it would be 14.4volt 5 amp max. I don't know what you are planning to run with it but always get more amp than you think you need. As long as you don't try to power more than it was designed for then the included power supply should be sufficient.
Date published: 2013-04-06