8 and 6 ohm speakers

[roughshawd]

I have a really big 480w pioneer amp that has settings for 6 or 8 ohm speakers. So I got these speaker cabs and used some 6 ohm speakers from an old console to make a set. I used what ever I needed to, bringing the ohmage up to match my 8 ohm amp. Anyway they worked but were very quiet.
Is there a formula that I can use to match the 6ohm set of 50w speakers to the 480watt amp? I am getting stuck between watts and ohms, and I surely don't want to blow up my speakers??!!

 

[Bluejets]

I used what ever I needed to, bringing the ohmage up to match my 8 ohm amp

how and why...you said there was a setting for 6ohm, why not use that..??
Never seen 6 ohm before, usually 4 or 8 but then again, no surprises.

As for 50w speakers on 480w amp, they'll blow if you crank it up, that's for sure.

Is there a formula that I can use to match the 6ohm set of 50w speakers to the 480watt amp?

None I know of, nor any hardware for that matter.
Begs the question why again...??

 

[crutschow]

used some 6 ohm speakers from an old console to make a set. I used what ever I needed to, bringing the ohmage up to match my 8 ohm amp.

Exactly what does "used what ever I needed" mean?
Need details.

 

[kellys_eye]

It won't be 480W that's for sure - the manufacturers always quote 'peak music power' to give their amplifiers the impression they are higher powered than they actually are. What is the amplifiers RMS power rating?

As for the speakers.... you do know they are POLARISED and that connecting them out of phase can affect the output?

 

[roughshawd]

I built the speakers using what ever I needed to make them 8 ohms from 6 ohms. Most of the speakers in the cabinet I made, were 6 ohms from an old 1950's console stereo.. What I was looking for was a good conversion formula to use for ohm/watt stereos. Watts Per channel or total watts, I want to know whether the ohms difference is going to change the watts requirements.( So the amp doesn't burn up. It seemed to get fairly hot with the home made 6 to 8 ohms conversion speakers.)

 

[roughshawd]

7 channel two pair sets of fronts, one pair of rear, one center, but I don't think you can use both fronts at the same time. So it's probably 440w/6 watt per channel. Multiple input tv, vcr 1 and 2, tape 1 and 2.. line input, tuner it's a pioneer, vsx-5700s
No cd or dvd.
.too old!

 

[crutschow]

using what ever I needed to make them 8 ohms from 6 ohms

Repeating the same statement doesn't tell me what you did or how you connected the speakers.
How do you expect answers if you don't give the details?

 

[Bluejets]

Draw out what you have and how connected.
Sounds like you are paralleling speakers willy nilly ...this will throw a spanner in the works.
I,m surprised a 1950 speaker would still be operational let alone have any higher wattage capabilities.

 

[bertus]

Hello,

As said, what are you trying to do?
Have a look at this page for connecting four speakers to an amplifier:

How to wire Four Speakers to One Amplifier - Geoff the Grey Geek

How do you wire four sets of speakers (or more) in your house. This article discusses practical issues involved in wiring four speakers to one amplifier.

geoffthegreygeek.com

Bertus

 

[kellys_eye]

Two 6-ohm speakers in parallel give you a 3-ohm speaker. Wire those in series with another 6-ohm speaker (with due regard to polarity) and you have a 9-ohm speaker. This won't affect your amplifier and will not be noticeably different from an 8-ohm speaker.

 

[crutschow]

Two 6-ohm speakers in parallel give you a 3-ohm speaker. Wire those in series with another 6-ohm speaker (with due regard to polarity) and you have a 9-ohm speaker.

With that, each speaker in parallel will output only 1/4 the audio power of the one in series.

 

[kellys_eye]

With that, each speaker in parallel will output only 1/4 the audio power of the one in series.

The intent was to achieve a 'workable' load rather than secure the perfect power transfer.

 

[crutschow]

I have a really big 480w pioneer amp that has settings for 6 or 8 ohm speakers. So I got these speaker cabs and used some 6 ohm speakers from an old console to make a set. I used what ever I needed to, bringing the ohmage up to match my 8 ohm amp.

I you have 6 ohm speakers and the amp has a setting for 6 ohms, why are you trying to match the 8 ohm amp setting?

 

[roughshawd]

Draw out what you have and how connected.
Sounds like you are paralleling speakers willy nilly ...this will throw a spanner in the works.
I,m surprised a 1950 speaker would still be operational let alone have any higher wattage capabilities.

The 12Axxxx set was in a console I stripped, there is a subwoofer from another pair that was 8 ohm. I strapped a few resistors to the lines to level the output by meter. The meter reads 8 ohms at the speakers connection to the amp. It was quite a chore getting it right, I had to use a 4 ohm tweeter to get the induction up enough to stabilize the ohm swing.. it was bouncing around between 250 and .7 before I put the 4 ohm in it.

 

[kellys_eye]

Putting resistors in is a futile exercise as the audio power will simply be dissipated in the resistor rather than at the speaker.

Note also that speakers are measured in 'impedance', not specifically a 'resistance'.

 

[roughshawd]

sometimes you are measured as impedance also...

 

[roughshawd]

Does anyone know what the R788 on the small speaker means?

 

[Bluejets]

The meter reads 8 ohms at the speakers connection to the amp. It was quite a chore getting it right

As already pointed out, even with the rest of this so-called project a dud ended futile arrangement, no point measuring dc resistance as speaker coils are rated at their ac resistance which is commonly known as " impedance".
Might be advisable to be careful how you use that as well.

 

[crutschow]

Can you tell us exactly how many and what speakers you have including their impedance rating, if you want some good answers, since the info you have provided so far makes that impossible.

 

[Bluejets]

I think any project involving 1950 era speakers will end in a definite level of crackling, distortion and eventually a great puff of smoke.....especially with 400w peak at the source,..