There's a faint red dot...looking at images for 20's...the red dot is next to green/black wire. Internet says...red dot on speaker usually sign for positive. ??♂? sounds reasonable.
On Fri, Feb 14, 2025, 7:57?PM Mickey McAuliff via <mickeymcauliff= [email protected]> wrote: Nope.? Looks like the paper or cardboard is peeled off. I'm assuming that those once held the polarity direction. Wire color doesn't qualify? Green/black white/black.
You should see a +/- ?or some other markings somewhere on the back of the tweeter, perhaps the back of the case.
Lacking that, you can test the tweeter with a battery but it is tricky.
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Nope.? Looks like the paper or cardboard is peeled off. I'm assuming that those once held the polarity direction. Wire color doesn't qualify? Green/black white/black.
You should see a +/- ?or some other markings somewhere on the back of the tweeter, perhaps the back of the case.
Lacking that, you can test the tweeter with a battery but it is tricky.
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You should see a +/- ?or some other markings somewhere on the back of the tweeter, perhaps the back of the case.
Lacking that, you can test the tweeter with a battery but it is tricky.
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Fellas. Can you tell me the polarity of the Scanspeak tweeter. Black/white, green/black. Which is which? The back label is gone where I assumed the +/- was located. Got my new ones today and didn't want to fudge it up. Thanks Mick
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Re: DQ10 Woofer Distortion
On Fri, 14 Feb 2025 10:07:00 -0800, guida_f via groups.io wrote: As I wrote in my message #6532 that I sent on 01/15/2024 and as you
can see in the photos I attached to my message #6534 (sent the same
day) a non-negligible difference between the original woofers of the
DQ10 and DQ20 (the ones with the masonite ring) and other woofers
with the same dimensions and holes is the position of the cone in
relation to the basket. In the original woofers the cone is
significantly more forward than in the other woofers. This
compromises the time alignment of the woofer in relation to the other
transducers. My initial reaction is that a misalignment of the woofer would be less critical than a misalignment of one of the other drivers because the wavelengths of the acoustic waves that the woofer radiates are considerably longer than the wavelengths of the acoustic waves that midrange and treble drivers radiate. Or am I failing to take something into account? John Joseph McVeigh Butler, Maryland USA
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Re: DQ10 Woofer Distortion
As I wrote in my message #6532 that I sent on 01/15/2024 and as you can see in the photos I attached to my message #6534 (sent the same day) a non-negligible difference between the original woofers of the DQ10 and DQ20 (the ones with the masonite ring) and other woofers with the same dimensions and holes is the position of the cone in relation to the basket. In the original woofers the cone is significantly more forward than in the other woofers. This compromises the time alignment of the woofer in relation to the other transducers.
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On the mid range branding, I don’t know. I just pulled that schematic from this site. In terms of the resistors, I heard of situations where the resistors appeared fine and when removed were burned and cracked on the bottom. The Dahlquist included resistors are just basic and not super high-quality.?
I would take a close look at all the solder joints with strong lighting and a magnifier if necessary. Look for a smooth shiny appearance.
Swapping midranges will elliminate that as an issue.
?
?
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Thanks Charlie! I see on all schematics, they show the mid as "unbranded". Shouldn't it be Magnar? Or am I wrong? I'm receiving the next generation of the Scanspeak 2008 tweeter today from Madisound! Hey Charlie,? I didn't change out the cement resistors with the cap change...you don't think that may be an issue? I hope not. They all looked white and without burn spots..thanks for your wisdom. Mick
The caps in red are the ones that affect the midrange.
?
?
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The caps in red are the ones that affect the midrange.
?
?
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Please let us know. I’m always eager to learn!
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Charlie.? Luckily I only have 2 choices! Pretty sure it's the speaker and not my top shelf soldering abilities! Lol...thanks man!
On Thu, Feb 13, 2025, 12:06?AM Charlie Conger via <ctconger= [email protected]> wrote: [Edited Message Follows]
That is the process I just used to fix my sprinkler system and it will work, especially if you have known good parts readily at hand to swap / sub. However, if you have multiple failures, like I did, it is not efficient. It took 10 days to fix the sprinkler.
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That is the process I just used to fix my sprinkler system and it will work, especially if you have known good parts readily at hand to swap / sub. However, if you have multiple failures, like I did, it is not efficient. It took 10 days to fix the sprinkler.
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Richard..exactly. would definitely narrow it down.
On Wed, Feb 12, 2025, 12:52?PM richard adelberg via <richardadelberg= [email protected]> wrote: You could swap the mid range driver from one speaker to the other. This would narrow it down to driver or crossover? On Wed, Feb 12, 2025 at 3:37?PM Charlie Conger via <ctconger= [email protected]> wrote: If it started doing this after recapping I would suspect the solder joints. Do both speakers do this?
Did you replace the components individually? Any chance the caps got interchanged with wrong values??
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You could swap the mid range driver from one speaker to the other. This would narrow it down to driver or crossover?
On Wed, Feb 12, 2025 at 3:37?PM Charlie Conger via <ctconger= [email protected]> wrote: If it started doing this after recapping I would suspect the solder joints. Do both speakers do this?
Did you replace the components individually? Any chance the caps got interchanged with wrong values??
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If it started doing this after recapping I would suspect the solder joints. Do both speakers do this?
Did you replace the components individually? Any chance the caps got interchanged with wrong values??
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Re: DQ10 Woofer Distortion
Thanks. They look great!?
Well Johnny...there's the twist! I didn't follow due diligence when I purchased. It had non Advent speakers installed. But....from what I've heard from the original 10's with Masonite they are at least as good if not better. And I'm still stretching them out. The fit and finish is outstanding. Everything lines up perfect.
On Wed, Feb 12, 2025, 5:47?AM Johnny Altobello, Jr. via <thestonegallery= [email protected]> wrote:
Mickey - what difference (if any) did you notice about the Advent 12's vs the original DQ20 woofers? Thanks, Johnny
On Tuesday, February 11, 2025 at 01:29:06 PM CST, Mickey McAuliff via <mickeymcauliff= [email protected]> wrote:
I'll testify to Simply Speakers Advent 12's I just installed in my 20's (I had no choice to rebuild.) And they sound fantastic. The fit was exact with mounting screws. Purists cover your eyes!! No but really...I'm really happy!
On Tue, Feb 11, 2025, 10:36?AM texmex_87102 via <texmex_87102= [email protected]> wrote:
My original 'Advent' woofers were stolen, or too far gone . . . I replaced them with Simply Speaker 12"ers and they are just fine. I know originality is a good thing, but just sayin' . . . it is hard to repair or replace the old Advents with the square magnet.?
On Tuesday, February 11, 2025 at 06:20:46 AM MST, Jeff Katz via <qstieee= [email protected]> wrote:
If you're not a DIY person, this is where I'd send speakers
On Tuesday, February 11, 2025 at 08:07:35 AM EST, Ed Marrs via <ed.marrs123= [email protected]> wrote:
Some good news.? Removed the woofer last night and found the voice coil slightly rubbing.? On closer inspection I discovered that the glue holding the surround had let go in several places.? Should be an easy fix.? It’s interesting that whomever previously replaced the surrounds did so with the concave side of the surrounds facing outside facing toward the listener.? I don’t think it matters, but found it odd.? Thank you everyone for all your suggestions.
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Re: DQ10 Woofer Distortion
 Well Johnny...there's the twist! I didn't follow due diligence when I purchased. It had non Advent speakers installed. But....from what I've heard from the original 10's with Masonite they are at least as good if not better. And I'm still stretching them out. The fit and finish is outstanding. Everything lines up perfect.
On Wed, Feb 12, 2025, 5:47?AM Johnny Altobello, Jr. via <thestonegallery= [email protected]> wrote:
Mickey - what difference (if any) did you notice about the Advent 12's vs the original DQ20 woofers? Thanks, Johnny
On Tuesday, February 11, 2025 at 01:29:06 PM CST, Mickey McAuliff via <mickeymcauliff= [email protected]> wrote:
I'll testify to Simply Speakers Advent 12's I just installed in my 20's (I had no choice to rebuild.) And they sound fantastic. The fit was exact with mounting screws. Purists cover your eyes!! No but really...I'm really happy!
On Tue, Feb 11, 2025, 10:36?AM texmex_87102 via <texmex_87102= [email protected]> wrote:
My original 'Advent' woofers were stolen, or too far gone . . . I replaced them with Simply Speaker 12"ers and they are just fine. I know originality is a good thing, but just sayin' . . . it is hard to repair or replace the old Advents with the square magnet.?
On Tuesday, February 11, 2025 at 06:20:46 AM MST, Jeff Katz via <qstieee= [email protected]> wrote:
If you're not a DIY person, this is where I'd send speakers
On Tuesday, February 11, 2025 at 08:07:35 AM EST, Ed Marrs via <ed.marrs123= [email protected]> wrote:
Some good news.? Removed the woofer last night and found the voice coil slightly rubbing.? On closer inspection I discovered that the glue holding the surround had let go in several places.? Should be an easy fix.? It’s interesting that whomever previously replaced the surrounds did so with the concave side of the surrounds facing outside facing toward the listener.? I don’t think it matters, but found it odd.? Thank you everyone for all your suggestions.
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Re: DQ10 Woofer Distortion
Well Johnny...there's the twist! I didn't follow due diligence when I purchased. It had non Advent speakers installed. But....from what I've heard from the original 10's with Masonite they are at least as good if not better. And I'm still stretching them out. The fit and finish is outstanding. Everything lines up perfect.
On Wed, Feb 12, 2025, 5:47?AM Johnny Altobello, Jr. via <thestonegallery= [email protected]> wrote:
Mickey - what difference (if any) did you notice about the Advent 12's vs the original DQ20 woofers? Thanks, Johnny
On Tuesday, February 11, 2025 at 01:29:06 PM CST, Mickey McAuliff via <mickeymcauliff= [email protected]> wrote:
I'll testify to Simply Speakers Advent 12's I just installed in my 20's (I had no choice to rebuild.) And they sound fantastic. The fit was exact with mounting screws. Purists cover your eyes!! No but really...I'm really happy!
On Tue, Feb 11, 2025, 10:36?AM texmex_87102 via <texmex_87102= [email protected]> wrote:
My original 'Advent' woofers were stolen, or too far gone . . . I replaced them with Simply Speaker 12"ers and they are just fine. I know originality is a good thing, but just sayin' . . . it is hard to repair or replace the old Advents with the square magnet.?
On Tuesday, February 11, 2025 at 06:20:46 AM MST, Jeff Katz via <qstieee= [email protected]> wrote:
If you're not a DIY person, this is where I'd send speakers
On Tuesday, February 11, 2025 at 08:07:35 AM EST, Ed Marrs via <ed.marrs123= [email protected]> wrote:
Some good news.? Removed the woofer last night and found the voice coil slightly rubbing.? On closer inspection I discovered that the glue holding the surround had let go in several places.? Should be an easy fix.? It’s interesting that whomever previously replaced the surrounds did so with the concave side of the surrounds facing outside facing toward the listener.? I don’t think it matters, but found it odd.? Thank you everyone for all your suggestions.
|
Re: DQ10 Woofer Distortion
Mickey - what difference (if any) did you notice about the Advent 12's vs the original DQ20 woofers? Thanks, Johnny
I'll testify to Simply Speakers Advent 12's I just installed in my 20's (I had no choice to rebuild.) And they sound fantastic. The fit was exact with mounting screws. Purists cover your eyes!! No but really...I'm really happy!
On Tue, Feb 11, 2025, 10:36?AM texmex_87102 via <texmex_87102= [email protected]> wrote:
My original 'Advent' woofers were stolen, or too far gone . . . I replaced them with Simply Speaker 12"ers and they are just fine. I know originality is a good thing, but just sayin' . . . it is hard to repair or replace the old Advents with the square magnet.?
On Tuesday, February 11, 2025 at 06:20:46 AM MST, Jeff Katz via <qstieee= [email protected]> wrote:
If you're not a DIY person, this is where I'd send speakers
On Tuesday, February 11, 2025 at 08:07:35 AM EST, Ed Marrs via <ed.marrs123= [email protected]> wrote:
Some good news.? Removed the woofer last night and found the voice coil slightly rubbing.? On closer inspection I discovered that the glue holding the surround had let go in several places.? Should be an easy fix.? It’s interesting that whomever previously replaced the surrounds did so with the concave side of the surrounds facing outside facing toward the listener.? I don’t think it matters, but found it odd.? Thank you everyone for all your suggestions.
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I just recapped my 20's recently but didn't replace the cement resistors. I have a slight crackling in the mid Magnat even at low volume..and it seems appears on different music tracks. Weird right! Could someone help me by circling the components responsible for the mid on the DQ20 schematic? I don't have any testing equipment to track problems so I guess I'm asking you all for what may be the culprit? I mentioned before the movement is very smooth when manipulation by hand and no tears or damage visually. Btw the resistors all looked good when I had everything apart for cap change. Would a bad solder connection cause something like this? Anyway, any comments helpful and ridiculed....would be appreciated. Mick
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Charlie Conger
