Question about Sunfire Cinema Grand Signature 400 seven 7-Channel Amplifier

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Amplification I Just bought a new amp gfa adcom thats rated 5x 150 watts per channel, But my speakers that I plan to use klipsch say 100watts maximum continuous (400watts peaks), Can I use these speakers with it? Thank you.

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You need to now the RMS for a true capacity of your speakers and your amp.

I would say you are OK, with a margin, but if you turn the amp to max and blow the speakers, please dont call me.

Posted on Sep 30, 2009

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1 Answer

How many watts per channel do Polaroid PBT3002 bluetooth speakers put out? How many ohms resistance? Can't seem to find this info anywhere.


This tends to be make and model specific! Speakers don't 'put out' power, amplifiers do. Speakers are rated at a certain power, which if you exceed that wattage, you damage the cones or coils.

Car amps 100watts per channel PEAK power, rather then RMS which is better. 8 Ohms.

Speakers should be capable of taking 20% more power than the amp can drive.

May 17, 2016 | Audio Players & Recorders

1 Answer

How do you connect wiring to bridge an adcom gfa 5300?


The manual does not specify a bridging option.

http://www.audioreview.com/cat/amplification/amplifiers/adcom/gfa-5300/prd_116265_1583crx.aspx

"Weaknesses:
Not bridgable."

Generally an amp that IS bridgeable uses the positive speaker terminals and some switching method to tell the unit to run as bridged. This is NOT a recommendation to try it on the 5300.

Aug 02, 2011 | Adcom GFA-5300 2-Channel Amplifier

1 Answer

Is a Adcom GFA-7500 5 channel power amplifier bridgable?


no this AMP is not bridgable to get more power out of this amp you need 4 ohm speakers.

Power rating
1 - 150 watts into 8 ohm speakers
1 - 225 watts into 4 ohm speakers

Feb 23, 2011 | Adcom GFA-7500 5-Channel Amplifier

1 Answer

Adcom GFA-7607 7 channel brand new, watched one movie!


I think the squirrels hid them in your garage under your Shelby!
RW

Jul 19, 2010 | Adcom GFA-7607 7-Channel Amplifier

1 Answer

Adcom gfa 555 blows the 10 amp fuse and the 6 amp fuse on the far right


Any fuse blowing is caused by a shorted component in either the power supply section or main audio amp part. Follow the fuse circuit and see where it leads you. Look around for burnt of damaged parts. Suspect anything sitting on a heat sink. The most common culprit is the audio amp main transistors, especially if someone shorted the speaker leads together. In the power part it could be the transformer, the large Electrolytic capacitors, rectifier, or voltage regulator. Some amps use an IC for amplification and this can blow the fuse.

Oct 19, 2009 | Adcom GFA-5500 2-Channel Amplifier

2 Answers

Adcom GFA 5500 right channel emits horrible sound. Broken highs and no bass. Is is repairable by a semi amatuer?


Adcom makes a great amplifer! Usually broken highs and no bass means blown speaker. Try hooking it up to a completely different input source. Try different speakers also. If problem persists, check the fuse. Most will have a fuse on the back you can screw out. Some have two fuses (one for each channel) If this doesn't fix the problem it could be expensive to fix. Also, does this model ave the thermal protection light and if so, does it come on at all?

Jun 22, 2009 | Adcom GFA-5500 2-Channel Amplifier

1 Answer

How do i bridge an adcom gfa 5400


This amp is not designed to be bridged and can not be used in the mode you wish. Sorry, but internal circuit changes would be necesary for the amp to work as a single channel.

Dan

May 01, 2009 | Adcom GFA-5400 2-Channel Amplifier

2 Answers

Best amplifier for bose 901 VI speakers


By all-in-one amplifier that handles the surround I think you mean all-in-one receiver or preamp. Amps are just big dumb muscular power supplies for speakers.

The source control and digital decoding could be handled by a modern AV receiver with multichannel analog outputs for driving separate amps or you could get a digital AV preamplifier/control unit functionally like this Adcom. Prepare for sticker shock.

http://hdtvdreams.com/Adcom-GTP-870HD-7.1-Multi-Channel-Processor/Preamplifier-GTP870HD.aspx

Understand that EACH PAIR of Bose 901's will require its own DEDICATED two channels of amplification AND someplace to jack in its Active Equalizer - between the line level source and the power amp.

Conventional speakers can probably run off the receiver's amplifiers since they don't/can't/must not have the Bose Active EQ in line with them.

Having a single pair of 901's plus a passive subwoofer or two in the same room for accurate 6- or 7.1 surround would require at least four stereo amps or some combination that adds up to 8 channels.

In my own system I have a Pioneer VSX-36TX Receiver (with 5 potential channels of amplification for Left, Right, Center, two Surrounds) doing light duty as the control and routing center but ONLY driving the Center (two Kenwood 777's) and Surround speakers (Bose 301's). I have a Carver 5-channel amp pushing the Bose 901 Front speakers (100Wx2), two dbx Subwoofers (110Wx1) and the Bose 301 Rear Surround speakers (60Wx1).

You could probably get by with a powerful 2-, 3- or 4-channel amplifier to push the 901's and subwoofer(s) as I did. It's the cheapest way out if you get a decent AV receiver. Once you set up the levels and delays the receiver does all the thinking and controlling for you.

Mar 18, 2009 | Bose 901 VI Main / Stereo Speaker

1 Answer

Can you bridge an adcom GFA-5802 power amp?


Running an amp in bridge mode requires a specific circuit design. It is not possible to combine 2 amps in this fashion.
Dan

Mar 02, 2009 | Adcom GFA-5802 2-Channel Amplifier

4 Answers

ADCOM GFA 5802 POWER AMP NO SOUND, BUT POWERS UP.


Remove the output transistors and measure each of the sets of 3 pads and report the voltage readings here. I suspect that you have either a blown driver circuit or output transistors. The voltage readings will give me an idea on where to start looking for specifics.

Thanks,
Dan

Nov 11, 2008 | Adcom GFA-5802 2-Channel Amplifier

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