This is an excellent question, curious to hear from whoever chimes in.
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On Nov 11, 2023, at 8:00 AM, russ jackson <rjackson@...> wrote:
I'm going to be on Long Island next week, and passing near the Dahlquist facility.? Is there anything to experience, or is it just a parts counter in an industrial park?? Any insight is appreciated... thanks!
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I'm going to be on Long Island next week, and passing near the Dahlquist facility.? Is there anything to experience, or is it just a parts counter in an industrial park?? Any insight is appreciated... thanks!
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Re: Hi group. What do you think these are worth?
William - how much coin are you dropping on this upgrade? Curious.
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Re: Hi group. What do you think these are worth?
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Re: Hi group. What do you think these are worth?
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Re: Hi group. What do you think these are worth?
Silver Plated OFC Ferrules and then covered with heat shrink. Wire is silver plated OFC with Teflon insulation. Bill Meyerhoff?
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On Sep 29, 2023, at 17:42, Charlie Conger <ctconger@...> wrote:
?I like those external crossovers! How are they wired below the perf board, just twisted and soldered?
also good to see the orthogonal arrangement of the inductors. Greatly reduces interactions.?
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Re: Hi group. What do you think these are worth?
I like those external crossovers! How are they wired below the perf board, just twisted and soldered?
also good to see the orthogonal arrangement of the inductors. Greatly reduces interactions.?
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Re: Hi group. What do you think these are worth?
The great thing about DQ-10s is, their sound quality never wavers in absolute terms (assuming proper care and maintenance). Which means that as their market price goes down, their overall value goes up. Great for buyers; not so great for sellers. But then again, why would you ever sell a pair of DQ-10s? ;-)
I do see a lot of parallels between vintage audio and classic cars and motorcycles. Both can be more temperamental than their modern counterparts, but when they're running well, there's no comparison.
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Re: Hi group. What do you think these are worth?
I have a mirrored pair of DQ-10’s, DQ-20i”s, DQ-20’s and they have all had tired and failing complaints.? I had an open resistor and removed it to find it baked underneath so I removed the rest and found they were all been roasted but only the one had failed. I broke it in half and couldn’t believe the heat damage.?  The top view you’d never know anything was wrong. I only use Military Spec Mill’s 1% tolerance resistors now and they’re also non-inductive with a highest heat range. All those original components have exceeded their life expectancy by either failing or the original tolerance is out or far out of spec. I’m available to test or measure any components or updates. I have seen people replace inductors with the same microfarad value not knowing they also have an impedance values need to stay the same as the original. I special order those with Linz wire at any value and they usually arrive within two to three weeks. I’m also replacing DQ-20 types with exterior mounted crossovers which do not require the unsealing and removal of the woofer. Everything’s so much easier to view and test and modify.?
If anyone needs assistance please message me.
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On Sep 29, 2023, at 09:26, Bill Meyerhoff <bmeyerhoff@...> wrote:
? It could be both. I have two expensive LCR measuring device's and all the original components have varied measurements to include some expired components. New components can be purchased with tighter tolerances bringing them back to the point when they were designed… Bill Meyerhoff? On Sep 29, 2023, at 08:41, Jack Harrington <sirreal63@...> wrote:
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They did not work.? At first I thought it was the drivers but it wasn't.? They had no appearance of damage, just dead.
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Re: Hi group. What do you think these are worth?
Agreed Bill, it is always best to verify.?
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It could be both. I have two expensive LCR measuring device's and all the original components have varied measurements to include some expired components. New components can be purchased with tighter tolerances bringing them back to the point
when they were designed…
Bill Meyerhoff?
On Sep 29, 2023, at 08:41, Jack Harrington <sirreal63@...> wrote:
?
They did not work.? At first I thought it was the drivers but it wasn't.? They had no appearance of damage, just dead.
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Re: Hi group. What do you think these are worth?
It could be both. I have two expensive LCR measuring device's and all the original components have varied measurements to include some expired components. New components can be purchased with tighter tolerances bringing them back to the point when they were designed…
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On Sep 29, 2023, at 08:41, Jack Harrington <sirreal63@...> wrote:
?
They did not work.? At first I thought it was the drivers but it wasn't.? They had no appearance of damage, just dead.
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Re: Hi group. What do you think these are worth?
They did not work.? At first I thought it was the drivers but it wasn't.? They had no appearance of damage, just dead.
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Re: Hi group. What do you think these are worth?
I'm curious Jack. ?What happens when they fail? ?What do they sound like (if that can be explained)? ?Do they still work?
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Re: Hi group. What do you think these are worth?
I am currently in the process of stacking two pairs of DQ-10s. ?On one pair I changed all the cross-overs caps, the other just one electrolyte cap and the potentiometer.
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Re: Hi group. What do you think these are worth?
Actually the little film caps can fail, both of mine were DOA.? Always check everything over, do not assume anything is good you have not verified as good.
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Re: Hi group. What do you think these are worth?
The 80uf for woofer tend to leak but those aren’t the black ones. Maybe chsnged. The piezo are film caps and don’t fail. The yellow Mexican ones can be checked in circuit with a peak 75 meter?
On Thu, Sep 28, 2023 at 5:56 PM Steven Moody via <steven.moody= [email protected]> wrote: Those look great compared to most!? In my experience, the only capacitors that actually go bad are the small blue electrolytics.? The tweeters need to be checked to really determine the value.
Steve
Cape Coral, FL, formerly Baltimore area?
On Thursday, September 28, 2023 at 04:57:58 PM EDT, Steve <maestrosteve@...> wrote:
I have to say that I love the enthusiasm from people here regarding the DQ-10s and Dahlquist in general. ?
SpongeSound is right in that it is not like a vintage car, but people here give the group the same feel as a classic car group.
How could you not love that?
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Re: Hi group. What do you think these are worth?
Those look great compared to most!? In my experience, the only capacitors that actually go bad are the small blue electrolytics.? The tweeters need to be checked to really determine the value.
Steve
Cape Coral, FL, formerly Baltimore area
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On Thursday, September 28, 2023 at 04:57:58 PM EDT, Steve <maestrosteve@...> wrote:
I have to say that I love the enthusiasm from people here regarding the DQ-10s and Dahlquist in general. ?
SpongeSound is right in that it is not like a vintage car, but people here give the group the same feel as a classic car group.
How could you not love that?
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Re: Hi group. What do you think these are worth?
Yup, unfort they don’t hold value commensurate with sound, I bought both my sets for 350$
I have to say that I love the enthusiasm from people here regarding the DQ-10s and Dahlquist in general. ?
SpongeSound is right in that it is not like a vintage car, but people here give the group the same feel as a classic car group.
How could you not love that?
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Re: Hi group. What do you think these are worth?
I have to say that I love the enthusiasm from people here regarding the DQ-10s and Dahlquist in general. ?
SpongeSound is right in that it is not like a vintage car, but people here give the group the same feel as a classic car group.
How could you not love that?
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Re: Hi group. What do you think these are worth?
Yes, I am the original owner and there has been no work (no rewiring) other than the replacement of the woofer surrounds.?
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SpongeSound
Charlie Conger
Bill Meyerhoff
