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Hi there, My 50 watt MG series marshall amp keeps making a loud rattling sound when its turned up loud. Any ideas why this is and how i could fix it? Ashley Fields e-mail: ashley_ibanez@yahoo.co.uk

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You need to determine whether the amp is creating the sound or the speaker itself has a problem. based upon your description, I think that the speaker is blown. The voice coil probably has come loose from its form. Try using the speaker out jack to connect the amp to another speaker. If that sounds good, the problem is the speaker itself.

Dan

Posted on Sep 12, 2008

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Bring spray contact cleaner from radio shack near you and clean volume control for amp while you are moving it forward and backward---do not put your mic in front of your speakers because this will give you more trouble.

Posted on Sep 12, 2008

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1 Answer

How many watts onkyo p3300 amp & pre-amp home stereo audio


Sorry I don't know the answer to your question because I don't know the specification of your amplifier but like a car engine that might have a capability of, say, 200 horsepower, in use and for practical purposes that figure is completely immaterial because most of those horses would never be used by a responsible driver. It requires only about 20 horsepower for an average car to maintain 50mph so it hardly matters what the potential power output is as long as it is capable of doing the work assigned to it.

The average person listening to a hi-fi in an average room requires an average power output of around half a watt. It is immaterial if the amplifier is capable of 50, 150 or 500 watts because for comfortable distortion-free listening most of that potential power will never be used.
With hi-fi the problems start with the speaker systems. It is a mistake to use a high power speaker in a domestic environment regardless of the potential amplifier power output. The amp will only produce the power it is capable of if it is driven hard (the volume turned up) and because doing that is anti-social, wasteful and harmful to health and comfort that should not happen but high power speakers tend not to reproduce sound efficiently at low power and so more power must be provided than would otherwise be needed with good low power speakers.
Fashions have changed and it is now difficult to find good hi-fi speakers for the domestic environment that reproduce sound efficiently at low power levels and speakers with a 10 watt rating, the ideal type for small to moderately-sized accommodation, are almost impossible to find these days but it is still possible to find good drive units rated at between 20 and 50 watts that perform fairly efficiently at social volume levels.

Nov 02, 2015 | Onkyo Audio Players & Recorders

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I have just bought a new Onkyo TX-NR808 and set it up over the week end with new 'accusound' surround sound speakers. Have bi-amp the front speakers. I don't think I am getting very good sound out of it?...


Depending on the amplifier, it might not provide enough power (in Watts) to the speakers. If the speakers require more power, it won't be as loud.

Mar 06, 2011 | Onkyo TX-8222 Receiver

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Hi, I've a Marshall JVM410H which is connected to a Marshall 1960B cabinet. The problem is I can't take the volume up very much because there is so much distortion - the more I turn the volume up, the...


Hi-
It sounds like you have the same rig I do. I bought the JVM410h immediately after it came out. I'm a professional gigging musician, and it had the versatility I needed.
One of the first things I noticed was it's high gain structure. On my JCM800, I could crank the gain to 10, and get a great, "classic Marshall" overdrive tone. The gain structure of the JVM is more sensitive. I find myself not needing the gain knob any higher than 10 o'clock, in the RED modes of the OD channels.
The manual is very informative, though somewhat complex. I recommend watching this tutorial on it:
http://www.marshallamps.com/product.asp?productCode=JVM410H#
Click on the "THEATRE" link on the right.
I love my amp, but it's been in the shop twice already. Marshall's are known for being unreliable, and this is amp is in no way an exception. Be gentle with it! It's moody.
Best of luck, and I hope this helps!

Aug 25, 2010 | Audio Players & Recorders

1 Answer

Speaker watt


Hi,

A series parallel network of four (4) 60 watts speakers would give you the same ohmage/impedance but with 240 watts capacity. Just two in parallel would give you half the ohmage/impedance but 120watts capacity or two in series would give you double the ohmage/impedance with again 120watts capacity.

Incidentally, if you bridge the power amp, you double the amp's output but only mono.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

Nov 05, 2008 | Audio Players & Recorders

1 Answer

I have a Holden Wasp XL base amp. 100 watt?? Quite old, 70's ish. CAn you tell me how many and what size speakers it will run. Thanks, Lance


hell yer, built in New Zealand... or Aussie, cant remember. Best sort of speaker box for bass is 4 x 10inch quad box. Next. a single 15 inch, or use both together. The head you have I think was more of a PA system than a bass amp, but will certainly do the job. So long as you are not trying to keep up with a Fender twin, or a Marshall stack. 100 watts don't go far for bass. I would go for the single 15 inch driver to more the most air.

regards
robotek

Jul 06, 2008 | Audio Players & Recorders

1 Answer

Nad 218 thx power amp keeps blowing ac plug fuse


Hi there. From memory they had bridge rectifier problems with them going short circuit. Check them first. Sometimes the toroidal transformer can go a shorted turn, in turn blowing primary fuses. try to soft start it whilst it is blowing fuses, Best bet is to make up a special lead that has a 60w light bulb wired in series with the mains power supply(or across the fuse holdwer that is blowing:). Limits the power in the circuit to ... well you guessed it 60 watts.

check em out and let me know.

regards
Graeme

Apr 27, 2008 | Audio Players & Recorders

1 Answer

Overloading


hi mate, ive had the same problem before with this amp. i bought it new aout 6 years ago and bought another new one about 1 year ago, new, for £70!

on the first amp there was a problem with the surround sound aspect, it kept overloading when turned up even a fraction, it would tick 4 times and power off. Eventually the surround sound stopped working all together and whenever selected made a VERY VERY loud hissing/crashing noise through all my speakers, blowing one of them, SO BE VERY CAREFULL.

when that happened i assumed was broken so bought another one, and had same overload trouble when i got a new speaker package.

Im pretty dam sure it was the ohmage ratings being different on 2 of the surround sound speakers that srewed the 1st one, so id suggest you check theyre all ok, as well as the speaker watt-age.

what are the specs on all your speakers (ohms and watts RMS)??

do you listen to LOUD music through the 5.1 option??

hope this helps, if all else fails buy a new one mate, theyre so cheap. go into panasonic shops and see if they have any left.

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1 Answer

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Most 1960 cabs have an option for 8 or 16 ohm... i dont think there is a 4 ohm option. The Jcm 2000 heads have the ability to do all three ohm setting. Thats all you really have to worry about. Make sure the ohms match up. The 1960 cabs typically have 4 t-75 speakers in them which are 75 watts each so wattage is not a problem. There is some argument about what ohms sound best. It doesn't really change that much in the sound in my personal opinion. I run mine at 16 ohms though cause i think it sounds brighter...

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1 Answer

Auto amplifier


It depends on if you want it to be able to play really loud and really clear. The deck will probably drive them pretty good on its own but when you really crank on some head decks the sound can start distortring.
Wheres the sub it the package?
Get a less powerfull, 50 Watt X4, amp and get a decent sub with a mono amp or they have all in one 4.1 channel amps. To drive the whole system and keep it easy.
Have fun

COEch

Mar 11, 2008 | Audio Players & Recorders

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