Question about Audio & Video Receivers

Open Question

ROLAND JC-50 ANPLIFIER

The amp is a Roland JC-50 model 50 watt with a 12' SPEAKER, THE REVERB DOESN'T GET ANYTHING, I took it out of the cainet and
I checked the top of the reverb unit visuallyand everything seems to look okay,do I have to look under the reverb unit also to get a better look at the spring connections? also I noticed 2 additional fuses inside the cabinet beside the exterior one, could you tell me what are they used for.
Thank you==guitardean

Posted by on

5 Suggested Answers

techman
  • 3130 Answers

SOURCE: Unit going into protection mode

You should first have or check the impedance and resistance of the speakers. then if all the speakers and wiring checks good, the only way to tell if this unit is good or the output section has no problems, is to hook up load resistors to where the speakers go, insert 400 to 1000 hz @.775MV into an input, hook up an osilliscope to the load resistors and slowly turn up the volume and see if the waveform clips before it shuts down. I doubt if you will have the equipment to preform these test but a good repair shop will be able to help you out. If it does not clip or go out then its all speaker wiring and/or the speakers.

Posted on Oct 04, 2006

  • 1 Answer

SOURCE: Bi-Amping my speakers with HTR-5850

You can at a minimum, bi-wire your speakers by wiring the speakers with the A and B speaker outputs. The A speaker outputs end up running the tweeters and the B will end up powering the woofers.

Posted on Dec 30, 2008

  • 3 Answers

SOURCE: Zone 2 problem

I know this is old and im sure you have it solved by now, but it might be a good idea to check the amp setting of Zone 2. Is it switched to Internal or external? I remember something strange about this amp in that when you change from using the rear surrounds and go to use them in Zone 2, it resets the amp setting or something like that. Hope it helps if you still need it.

Posted on Mar 08, 2009

trainrick
  • 22 Answers

SOURCE: Cannot Power Up, Sometimes can

i had a real nice yamaha natural sound receiver and the relay that switched it on went bad a lot..... try the relay???

Posted on Apr 26, 2010

smarthome2
  • 1114 Answers

SOURCE: I have connected all speakers but not getting

You need to use an amplified sub. The Yamaha receiver is only sending "Pre-Amp Signal" not amplified audio like the rest of your speakers. If your sub has a crossover built in, connect it's speaker level (wires) to the "B" side of the receiver which will send audio to your sub and it will cross it over internally. Not the best sounding, but it works. Amplified subs range in price from 200 and up. Hope this helps

Posted on Jun 15, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

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 & Video Receivers

1 Answer

Compatibilty


If what you say is true, you should be fine.
Where you get into trouble is having an amp of higher power than your speakers. That means you will likely blow your speakers.

Nov 12, 2014 | Audio & Video Receivers

2 Answers

I have a peavey special 130 amp that has a 300 watt pre amp.I have no idea how to use it.I have had this amp for twenty years and no body can tell me.my idea is that it is for an external speaker cabinet.I...


Hi, avatar6.jpgbudfaulkner7

The 130 special was released as a Combo Amp, though I have seen quite a few taken out of the original cabinet and used in a rack system. Mine had a single 12" Scorpion speaker, I think a revised model came out in 86 (in Canada at least) that had twin 10" black widows.

Hth, Wee-Lamm

May 29, 2011 | Audio & Video Receivers

1 Answer

I got this old Reverb Amp from cleaning out a house for a real estate agent. I was wondering its worth & how to go about getting it to someone who would like to have it. Thank You Its a Pioneer SR-202...


It's an old 'spring-type' reverb.

http://en.wikipedia.org/wiki/Reverberation#Spring_reverberators

I have one from the mid-70's, long unused. Digital reverb is more predictable and not susceptible to rom vibrations or jarring. There are those who would still want one.

You might put it out on eBay. They don't get much for them.

This auction expires in 2 days. The bidding is $20.50 right now. You might watch it to see what the unit eventually goes for.

http://cgi.ebay.com/Vintage-Pioneer-Reverb-Unit-SR-202w-/260777273468?pt=Vintage_Electronics_R2&hash=item3cb789687c

May 05, 2011 | Audio & Video Receivers

1 Answer

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

2 Answers

I have a Bose Accumass 6 system connected to an Onkyo amp running as a entertainment system on our boat. The quality is sufficient for what we need. The amp (a TX-DX575) has A&B speaker switches for a...


two 8 ohm speakers in parallel is 4 ohms.
if series 16 ohms.a high resistance will just produce less power.
too low a number can activate the speaker protect,or blow the amp.
radio shack sell wall mounted speaker controls,but 5 watt max.
the best thing is to run 2 amplifiers.one for in ,2 for out
speaker a and b on the amp parallel the speakers.
if you run 2 sets of 4ohm speakers,the amplifier load will be 2 ohms,and overheat the amp.4 8 ohm speakers,gives a 4 ohm load

May 09, 2009 | Onkyo TX-DS575 Receiver

2 Answers

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


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.

Sep 12, 2008 | Audio & Video Receivers

1 Answer

My amplifier getting protect what shall i do?


You have overloaded it. Check your wiring to make sure you are not shorting anything out. Check your speakers' ratings and make sure they are not less than 8 OHMS or reduce total number or speakers being driven. A 500 Watt receiver should easily drive 6 80-100 WATT peak speakers @ 8 OHMS.

Speakers with less resistance (6 ohms and lower) require more power to drive and therefore increase the load on the amp, which puts it into PROTECT mode so you don't blow the circuitry. Do not drive a subwoofer with the same amp as the main speakers. Be sure you are using home audio and not car audio speakers. Use larger speaker wire (16 gauge or lower).

Apr 03, 2008 | Audio & Video Receivers

Not finding what you are looking for?
Audio & Video Receivers Logo

Related Topics:

136 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio & Video Receivers Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

The Knight
The Knight

Level 3 Expert

68197 Answers

yadayada
yadayada

Level 3 Expert

60769 Answers

Are you an Audio and Video Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...