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Re: driver testing


 

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I have a box of piezo tweeters, bought when I was rebuilding my DQ-10¡¯s.? Thought the replacements were defective until realizing I no longer heard frequencies that high.? Fortunately hearing to 10-12kHz covers the fundamentals of music.

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From: [email protected] <[email protected]> On Behalf Of richard adelberg
Sent: Tuesday, September 29, 2020 7:56 AM
To: [email protected]
Subject: Re: [DahlquistSpeakers] driver testing

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I never hear piezo unless I take speaker leads from amp directly and touch it to sprJrr leads?

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On Tue, Sep 29, 2020 at 10:51 AM Ed Lindsey <sealindsey@...> wrote:

Yes, sort of.? The piezo driver is reported to be difficult to hear for most people.? My 65 yr. old ears definitely don¡¯t hear it.? Otherwise, yes.? I recommend that each driver be driven individually with a tone in the center of their operating range.? Otherwise, you may get a response from multiple drivers that operate at a given frequency.? Just be careful not to overdrive an individual speaker, or you may be replacing one that worked before the tone test.

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Oops, just saw Richards response below.? What Richard said.

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From: [email protected] <[email protected]> On Behalf Of richard adelberg
Sent: Tuesday, September 29, 2020 6:39 AM
To: [email protected]
Subject: Re: [DahlquistSpeakers] driver testing

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Absolutely. And if u want to test ranges... disconnect speaker wires and hook up one at a time and run the freq individually with a dn meter at each freq, or just run a sweep.?

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On Tue, Sep 29, 2020 at 9:33 AM w e <sky27709@...> wrote:

Ed - Can one just use the Binks test tones to merely determine that all five drivers are working?
















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