Certain classic designs called for their component drivers to be "matched".
E.g. The LS3/5a is an example, but there are many others.
Which of the T/S parameters - or other measurements - are reckoned to be critical in such cases?
Thx
Doug
E.g. The LS3/5a is an example, but there are many others.
Which of the T/S parameters - or other measurements - are reckoned to be critical in such cases?
Thx
Doug
Well, when I'd order matched pairs from Altec, they matched Fs, BL, ref. eff, impedance trace to a few percent and I sure couldn't tell any difference in or out of the cabs. Fast forward a few decades and IIRC Dan Wiggins of the [late] Avatar/Adire Audio posted that they just checked Re, ref. eff. WRT whether they were 'close enough' overall to published specs.
As for matching components for a multi-way, that would require knowing the details of the performance, etc., needs of the intended app, so one could write a small book to thoroughly cover this subject, though I imagine there's a 'bare bones' basic tutorial in one or more of the DIY or professional books on speaker system design.
GM
As for matching components for a multi-way, that would require knowing the details of the performance, etc., needs of the intended app
GM
The primary requirement is to have a great person working in PR and who suggests 'matched drivers' at the appropriate board meeting.
What I would take from the advertisement for matched pairs is that the company is so ***** and batch variations are so terrible that this is a necessary evil if you want great speakers.
It is in reality just another PR claim.
Yes, as a former Distributor of drivers, I used to sell matched pairs because that is how they came.
P🙂
What I would take from the advertisement for matched pairs is that the company is so ***** and batch variations are so terrible that this is a necessary evil if you want great speakers.
It is in reality just another PR claim.
Yes, as a former Distributor of drivers, I used to sell matched pairs because that is how they came.
P🙂
In some cases maybe. But I can remember that some broadcasting companies called for matched pairs when it came to studio monitors. That was back in the eighties. Don't know wheter this is still the case.
Regards
Charles
From what I can tell, it goes like this:
- Make a batch of drivers/finished speakers
- Measure the lot
- Find pairs that sit close together
- Sell them at a markup over 2x single units
Companies that make studio monitors do this easily - they're already measuring every unit that leaves the factory, so then it's a bit of work matching the serial numbers of shipping.
Chris
- Make a batch of drivers/finished speakers
- Measure the lot
- Find pairs that sit close together
- Sell them at a markup over 2x single units
Companies that make studio monitors do this easily - they're already measuring every unit that leaves the factory, so then it's a bit of work matching the serial numbers of shipping.
Chris
This really depends on the manufacturer, and also the consistency of manufacturing.
If drivers have super consistent performance then they are all matched. 🙂
IMHO, this was a bigger issue in the past than it is now.
Speaker makers who did this would order in large batches, then measure each driver, and attempt the best possible match. Computers helped as well, automating the measurements and helping to match against stock.
If drivers have super consistent performance then they are all matched. 🙂
IMHO, this was a bigger issue in the past than it is now.
Speaker makers who did this would order in large batches, then measure each driver, and attempt the best possible match. Computers helped as well, automating the measurements and helping to match against stock.
One can match T.\?s parameters… as i do with my matched pairs (a good example attached, the set of metrics in the lower right need to be <3%, the sensitivity within a quarter dB), or go even further as Chris suggests, measure the FR and match that. Often done at the component level.
To match both you have to have a lot of drivers to match.
dave
To match both you have to have a lot of drivers to match.
dave
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