|
Untitled Page
ARCHIVED FORUM -- April 2007 to March 2012 READ ONLY FORUM
This is the first Archived Forum which was active between 17th April 2007 and
1st March February 2012
Search
Page 1 of 1 (9 items)
-
Latest... Tested every coil for impedance. No open circuits - good news! Interestingly the coils all come in at 2.9-3.0 Ohms for the Penta 1's, 3.1-3.2 for the Penta 2's. Possibly an age thing. Ordering foam rings now.
-
[quote user="Leslie"] Could you colo(u)r up your story a bit by adding some pictures. You know the frase "a picture is worth a thousand words". I'm specially interested in the shimming part of your Penta midrange, cutting of the dustcap, shimming, replace a new one etc. [/quote] (Nice pickup on the English spelling!) Pics? Sure
-
Finally cleaned up 16 midrange drivers. Cleaned the original foams off the Penta 2's and finished cleaning a poor refoam off the Penta 1's. Some observations... Big difference between between cleanup of the original job and the poorly-done refoamed drivers - the latter took three times as long and, quite frankly, are a bit worse for wear. I
-
All valid points Jeff - a great response. I agree that Fs as a lower frequency limit isn't a primary concern, though as a physical property it affects a great deal. The notion of valid end termination gives further ammunition to the previous question though - loading a cone up with glue at the periphery will have a more significant effect than the
-
Still scraping and dissolving glue on the frames of the Penta 1 midrange (the 'professional' refoam)... what a mess. The baskets are glass-filled nylon and end up looking a little worse for wear... until a surface color's applied, then we're getting somewhere - cosmetically original and a nice, flat surface to glue onto. Quick question
-
[quote user="Leslie"] Foam. Have been using rubber before but it's quite difficult to handle! [/quote] Would imagine this changes the T/S parameters also, starting with Fs - probably not ideal.
-
OK! Four Penta's worth of midrange drivers (that's 16 of them!) removed, old foams out of my Penta 2's and 'new, professionally refoamed' kit off my Penta 1's... what a disaster! I had thought some of the horror stories on refoaming on this forum to be a bit extreme, but no - completely possible! What a sad way to treat a lovely
-
I should be honest - I bought my other Pentas at extremely good prices and didn't do too badly on these. Whilst the seller didn't take them back, he was good enough to offer a partial refund. So I have two 'good' pairs (1x Penta 2, 1x Penta 3) requiring slight refurbushing and one 'not so good' pair (1x Penta 1) for whom I've
-
So; After looking for a second set of Pentas, I negotiated (what I thought was) a fair price with an eBay seller and a pair of Penta 1's arrived recently. Regrettably the midrange drivers weren't so much "professionally refoamed" as promised, more "refoamed by a blind man using too much glue"... visually the job is horrific
Page 1 of 1 (9 items)
|
|
|