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Infinity ERS640 speakers impedance

I would connect my Infinity ERS640 speakers to a Sony FH-15R amplifier. The amplifier speaker line indicate 6 - 16 ohms. I measured the impedance of the Infinity ERS640 speakers and found 2.5 ohms. Can I still make the connection? Thanks,
Jacques

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Your speakers are acutally rated at 4 ohms. Your connection will be just fine. No need to worry.

Here is the manual for your reference.

Posted on Jan 21, 2009

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1 Answer

The speaker has a low power output


The output of a speaker primarily depends on system design (obviously) However, perhaps you have sourced a replacement or 'upgrade' speaker for an existing system. In that case, perhaps you have an impedance mismatch. If your amplifier is designed to drive, say, an 8 ohm speaker, and you connect a speaker of 16 ohms impedance, then your sound will be softer. On the other hand, you may have connected more than one speaker to one power amplifier output. If you connected in series you add the impedances. If connect in parallel you work out the impedance using this formula:
1/Answer= 1/Speaker A impedance + 1/Speaker B impedance + 1/Speaker C impedance etc. So if you connect three speakers in parallel, each of 8 ohm impedance:
1/Answer=1/8 + 1/8 + 1/8 = 3/8
3X Answer=8
Answer = 8/3 = a little less than 3 ohms.
Reducing the load like this makes the sound louder, but risks distortion or even damage. Check your manual for amplifier tolerances. Cheers, Don.

Dec 13, 2013 | Audio Players & Recorders

1 Answer

Connect speakers


All power amplifiers are designed to operate with a maximum current. This is limited by a minimum speaker impedance load. Your amplifier manual will specify the minimum load on output channels. High quality amplifiers can drive speakers with a combined impedance of 2 ohms or less. To calculate your parallel load, as you have requested, use the following formula. 1/Total load = 1/mgongo speaker impedance + 1/HW-E5500 speaker impedance.
Example. If your mgongo speakers have a nominal impedance of 8 ohms and the HW-E550 speakers have a nominal impedance of 8 ohms, then the formula is 1/Answer=1/8 + 1/8
1/Answer = 2/8
1/Answer = 1/4
Answer = 4.
If your amplifier can drive a 4 ohm speaker load without clipping then you are OK.

Dec 09, 2013 | Audio Players & Recorders

1 Answer

How do I hook-up 2 center channel speakers to a single center channel amplifier output?


Since you have Only one common main output,you can hook up your speaker, its either in series or parallel connection depending on the impedance in your amplifier,impedance in OHMS,(8ohms/4 ohms/16 ohms) please see the impedance level at the speaker terminals of your amplifier,
Thank you,

Jan 30, 2013 | Audio Players & Recorders

1 Answer

How come my two subs wont get powered with a 12 ohm load. is it to high of a load. they are 12


HelloCheck the output impedence [indicated in OHms]]. You can get it from its manual. If it is designated as; 8OHms for example; you can connect one 8OHMs speaker direltly, or two 4 OHMs speakers in serieal connection. Likeways, if the output impedence is 6OHms, you can connect one 6OHms speaker direltely, or 2 12OHMs speakers in parellel. Just see, when we connect thow speakers in serieal, the impedence will be the sum of both speaker impedences. if we connect the same in parellel, the impedence will get halved. OK.

Dec 19, 2011 | Car Audio & Video

1 Answer

How do I hook up my infinity 1600a at 2ohms with 2 4ohm speakers?


Placing the speakers next to each other face down, you will notice that the connection points run in sequence +- and +-. Now connect the - (negative) from the one speaker, to the + (positive) of the other speaker. Now connect the open + from the one speaker and the open - from the other speaker to your amp. Your amp should have a bridging indication. On the connection points of the amp, you should see a mark pointing to the first + and the last -. That will be your bridge and thus utilizing the full potential of your amplifier

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1 Answer

Flushing "PROTECT" on the screen of a SONY STR DG 910 Receiver


Try connecting one speaker at a time. The "protect" indicates a short or improper impedence (ohms) in one of the speaker lines. it may not be directly shorted, but I'll need to know what you have hooked up for speakers. Also, do you have any electronic meters?

Mar 22, 2009 | Sony STR-DE597 Receiver

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