SDA 2B Blade/Blade Question

I picked up a pair of SDA 2Bs today and the previous owner said he had switched back plates from a pin/blade to a blade/blade type. After searching some of the forum, most of the comments around this discuss that difference pertaining to when they were manufactured. Is there a downside to doing this, or something else I should check that should be done when making this change? I'm assuming no dreadnaught setup and common ground amps only with the blade/blade.
Previous owner also mentioned he did the RD0-198 tweeter upgrade and the appropriate capacitor update along with them. For now, I'll be powering these with an NAD T775 in 2-channel stereo mode.
Previous owner also mentioned he did the RD0-198 tweeter upgrade and the appropriate capacitor update along with them. For now, I'll be powering these with an NAD T775 in 2-channel stereo mode.
Home Theater - Talon Firebird (Fronts), Talon Raven 2002 (Surrounds), Talon Cinema Hawk (Ctr), Talon Falcon (Back Surrounds), JL Audio Fathom F112 Sub
Pre/Pro - Classe SSP-800
Amps - Sim Audio Moon Titan 5 channel, Modwright KWH 225i
Blu-Ray - Oppo UDP-203
Projector - Epson PowerLite Home Cinema 5040UB
Screen - Silver Tickets MPT 110"
Primary 2 Channel - Talon Firebirds
Modwright KWH 225i Integrated Amp
Oppo BDP-103, Audio Research DAC 8
Secondary 2 Channel - Polk SDA 2B
NAD T775, Denon 2900 DVD-A/SACD
Pre/Pro - Classe SSP-800
Amps - Sim Audio Moon Titan 5 channel, Modwright KWH 225i
Blu-Ray - Oppo UDP-203
Projector - Epson PowerLite Home Cinema 5040UB
Screen - Silver Tickets MPT 110"
Primary 2 Channel - Talon Firebirds
Modwright KWH 225i Integrated Amp
Oppo BDP-103, Audio Research DAC 8
Secondary 2 Channel - Polk SDA 2B
NAD T775, Denon 2900 DVD-A/SACD
Comments
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
Pre/Pro - Classe SSP-800
Amps - Sim Audio Moon Titan 5 channel, Modwright KWH 225i
Blu-Ray - Oppo UDP-203
Projector - Epson PowerLite Home Cinema 5040UB
Screen - Silver Tickets MPT 110"
Primary 2 Channel - Talon Firebirds
Modwright KWH 225i Integrated Amp
Oppo BDP-103, Audio Research DAC 8
Secondary 2 Channel - Polk SDA 2B
NAD T775, Denon 2900 DVD-A/SACD
Belles 21A Pre modded with Mundorf Supreme caps
B&K M200 Sonata monoblocks refreshed and upgraded
Polk SDA 1C's modded
Wireworld Silver Eclipse IC's and speaker cables
Ok, unfortunately some hack has been at your speakers. Let's start with the drivers. Whatever crap they put around the magnet and extending onto the basket isn't going to prevent a possible magnet shift because they didn't put anything around the top of the magnet. If you can't remove that crap at least put an adhesive around the top.
Whatever crap they used for the driver gaskets remove it and replace with speaker gasket material from Parts Express.
There's something going on with the blue and white SDA wire connections. They should be fully covered in that sealer material. However, the SDA socket body is an original as the rivets haven't been touched. Please post a pic with the blue and white wires disconnected and also a pic of the socket from the outside.
I've seen hand written labels on crossovers before, so that could be original. The white cap should read 5.8uF and was added in order to use the RD0198 tweeter. Verify it is a 5.8uF.
This is an original 2B pin/blade crossover.
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
Pre/Pro - Classe SSP-800
Amps - Sim Audio Moon Titan 5 channel, Modwright KWH 225i
Blu-Ray - Oppo UDP-203
Projector - Epson PowerLite Home Cinema 5040UB
Screen - Silver Tickets MPT 110"
Primary 2 Channel - Talon Firebirds
Modwright KWH 225i Integrated Amp
Oppo BDP-103, Audio Research DAC 8
Secondary 2 Channel - Polk SDA 2B
NAD T775, Denon 2900 DVD-A/SACD
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
If you don't, be sure seal all the unsealed areas on the back of the current binding post plates.
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
Pre/Pro - Classe SSP-800
Amps - Sim Audio Moon Titan 5 channel, Modwright KWH 225i
Blu-Ray - Oppo UDP-203
Projector - Epson PowerLite Home Cinema 5040UB
Screen - Silver Tickets MPT 110"
Primary 2 Channel - Talon Firebirds
Modwright KWH 225i Integrated Amp
Oppo BDP-103, Audio Research DAC 8
Secondary 2 Channel - Polk SDA 2B
NAD T775, Denon 2900 DVD-A/SACD
Pre/Pro - Classe SSP-800
Amps - Sim Audio Moon Titan 5 channel, Modwright KWH 225i
Blu-Ray - Oppo UDP-203
Projector - Epson PowerLite Home Cinema 5040UB
Screen - Silver Tickets MPT 110"
Primary 2 Channel - Talon Firebirds
Modwright KWH 225i Integrated Amp
Oppo BDP-103, Audio Research DAC 8
Secondary 2 Channel - Polk SDA 2B
NAD T775, Denon 2900 DVD-A/SACD
Pre/Pro - Classe SSP-800
Amps - Sim Audio Moon Titan 5 channel, Modwright KWH 225i
Blu-Ray - Oppo UDP-203
Projector - Epson PowerLite Home Cinema 5040UB
Screen - Silver Tickets MPT 110"
Primary 2 Channel - Talon Firebirds
Modwright KWH 225i Integrated Amp
Oppo BDP-103, Audio Research DAC 8
Secondary 2 Channel - Polk SDA 2B
NAD T775, Denon 2900 DVD-A/SACD
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
Other; S60'S, M10 series II, M7C's, Hafler XL600 amp, RB-980BX, Parasound HCA-1500 amp , P5 preamp, all in storage. All vintage Polk have had crossover rebuilds and tweeter upgrades.
There are three things that give a man a false sense of courage, a keyboard, alcohol and a firearm.
Motorhead, 4.12.20
tonyb said " but even socialists can do a good thing here and there
the substitution of politics for existence is the supreme betrayal of the subjective otherness of man.
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
Look at the binding post nuts no hot glue at all, it's been removed why to replace wires and/or posts.? Also look at the b/B I.C. connectors the white wires faston looks funky (glued/taped or poorly soldered).
Now for the crossover notice there's something missing for TL mod, The jumper between pads E & H (unless it was done on the back side) without connection that 5.8uf cap is not in the circuit making useless.
FWIW: If these were mine I'd go over them with a fine tooth comb.
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“The two most important days in your life are the day you are born and the day you find out why.” ~ Mark Twain
Unfortunately for most of us we only get to experience the first day and then we can't even remember it.
---
"Close only counts in Horseshoes, Hand Grenades and Thermonuclear Weapons."
"50% Why... That's almost half."
"I know, I'm sick and need help."
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Gimpod Custom 4th & 5th Gen SDA Circuit Boards
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"The best way to enjoy digital music reproduction is to never listen to good analogue reproduction." ~ Kenneth Swauger
That's right, get'em now 'cause once they are gone, they are gone for good.
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
As for Gimpod boards, I don't know if these particular speakers are worth going down the rabbit hole for. Don't get me wrong, I love the SDA sound and considered crossover upgrades for both my 2.3 TLs and 1.2 TLs before selling them. I'm using the 2Bs as a secondary system in the master bedroom and don't have a lot of money invested in that system. I'll wait for the forum's feedback when I get the new pictures posted and go from there.
Pre/Pro - Classe SSP-800
Amps - Sim Audio Moon Titan 5 channel, Modwright KWH 225i
Blu-Ray - Oppo UDP-203
Projector - Epson PowerLite Home Cinema 5040UB
Screen - Silver Tickets MPT 110"
Primary 2 Channel - Talon Firebirds
Modwright KWH 225i Integrated Amp
Oppo BDP-103, Audio Research DAC 8
Secondary 2 Channel - Polk SDA 2B
NAD T775, Denon 2900 DVD-A/SACD