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Dynaco A25 Questions

When I got these speakers last week, I was honestly amazed at the sound difference, considering the CS-44's are almost identical in size, and have similar sized drivers and placement. I listened to Kayak-Phantom of the Night (1978), which has a very deep bass line and prominent vocals throughout the album. The bass response is much smoother and deeper than the CS-44s and the highs are less "harsh". Overall I am very pleased with the purchase.
 
8xlaxx said:
IMHO, you might be overthinking the re-finishing and sanding part of these. Your A25s look really good.

I hit mine quickly with 0000 steel wool with the Howards Restoration stuff and then used the Citrus Feed 'n Wax,...they cleaned up quickly.

EDIT: Shame that the grill on the left looks stained :no:. The one on the right looks great! :bigok:
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Don't, don't, don't use steel wool. Steel wool leaves small pieces of metal behind. Those tiny pieces of metal are strongly attracted to the magnets in your drivers. You do not want metal shards sticking out of your tweeter domes. Don't ask me how I know. :(

it is better to use fine grit sandpaper, such as 320. I occasionally use 220 grit if I must.
 
RTally said:
Don't, don't, don't use steel wool. Steel wool leaves small pieces of metal behind. Those tiny pieces of metal are strongly attracted to the magnets in your drivers. You do not want metal shards sticking out of your tweeter domes. Don't ask me how I know. :(

it is better to use fine grit sandpaper, such as 320. I occasionally use 220 grit if I must.
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I usually use 220 on moderate scratches and finish with 320.
 
^^^ You must have gotten VERY aggressive with the wool.

meh...to each his own.
 
8xlaxx said:
^^^ You must have gotten VERY aggressive with the wool.

meh...to each his own.
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Why take the risk? If you are not being aggressive, use a ScotchBrite pad or anything else besides steel wool.

The fines from steel wool are also known to get caught in the wood fibers, even when not being used aggressively. Steel wool has its place in wood finishing. But it should only be used on speakers with the drivers removed and after the surface has been smoothed. Steel wool is best for finishing a surface, not for removing scratches or surface imperfections.
 
https://www.howardproducts.com/products/videos/



At the 2:20 and 3:13 minute marks,... that's steel wool.

Works great and again, I highly recommend it.

Holy smokes,...you must've been working extremely close to your speaker components or rubbed so hard that you went through the finish and cabinet.:dunno:

(I have no affils w/ Howards)
 
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8xlaxx said:
^^^ You must have gotten VERY aggressive with the wool.

meh...to each his own.
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I also got the talking-to about steel wool. I used #0000 carefully and it worked great. I did not remove the drivers, but very carefully sealed the baffle with painters poly and masking tape, then ran tape all over the speaker to grab any wool left. Then I put another layer of tape and plastic over the baffle to seal any wool in there. I completely get how steel wool COULD cause a problem -- if you aren't careful.

I figured that removing the drivers, then using wool with RAF, would be potentially worse, because I wouldn't be as careful of any leftover wool when reinstalling the drivers.

I've also read that sometimes removing these drivers can cause other problems, so I made a judgment call. And I wasn't ready to recap them.

No problems at all.
 
Isaac C. said:
Lafayette LR-3500 on top, the LR-2200 is 1/2" too long to fit in the drawer. :cool:
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Cool looking receivers. Congrats on doing such a nice job restoring your A-25 speakers.

I changed up a system this past weekend and put a pair of A-25's back into use. I think they sound pretty darn incredible with a Pioneer SX-828. Not so when I first fired them up but after some play time they woke up. I think they are all original so perhaps the caps are tired and need to "reform" before sounding their best (they had been sitting idle for several months).

They don't have the bass of my Original Large Advents but to me, best them in the highs and mids.
 
As far as removing the woofers, I used a heat gun, moving it across one area & gently wedged a paint scraper blade underneath the metal woofer frame, heating & wedging around the entire frame & it came up perfectly without any damage. When I placed the woofer back, I reheated the already soft glue & re-set the speaker into the glue & screwed down.
 
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