SDA2b Review
Comments
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Conradicles wrote: »Spent some quality time with my SDA's in the 2 channel rig yesterday and last night. I decided to move them to a different wall and space them apart a bit more. Now I have them 7 FT apart and 6" from the back wall and about 4 FT on both sides...
Wow! I thought they sounded good before, but now even better! More bass, and the phantom center is sooooo much more defined.:D:D:D
All you new SDA owners that are a little dissapointed (heard a lot of folks complaining about lack of bass on this forum), try some different locations/distances. Use a tape measure and get them perfect.
Sounds like your in love.:D -
They continue to impress even with my modest components. Best "speaker per dollar" I have ever heard. I paid $200 for this pair and upgraded to the RD0194 tweets.
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Hey
New to Polk forum. Just purchased a set of SDA-2Bs from Sounds Classic in Rockford Il. Where to start...WOW. I cannot believe how good these speakers sound! Steely Dan to Pink Floyd are like hearing them for the first time. I do have a question for the forum. I have spent the last 3 years building up my vintage system. Using Pioneer SX-1050 receiver, Pioneer SG-9800 EQ, Onkyo DX-C390 Cd and Sansui FR-D25 tt with a Ortofon Red cartridge along with the Polks. I am EXTREMELY happy with the speakers and the incredible imaging but am curious if the Pioneer SX-1050 has enough power to feed the SDA-2Bs. I seem to be tripping the protection circuit. Do I need to add an amp such as a Crown 1502 to feed the speakers and reduce the load on my 1050. BTW the 1050 has been professionally recapped and all new filters repaired by Sounds Classic and yes I am using the SDA cable. Any feedback here is most welcome?? -
When you say "tripping the protection circuit", does all the sound stop and you have to power cycle the Pioneer, or is it just the tweeter cutting out when it's loud and then it comes back after you turn it down for a period?
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There is a polyswitch (thermal protection device) on each crossover to help protect the tweeter from damage. It's basically a re-settleable fuse. They become hyper sensitive after getting tripped. Most remove the poly and replace it with a 0.5 ohm 10 or 12 watt resistor.
Do NOT buy a Crown amp, period.Political Correctness'.........defined
"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 -
In general, I'd say that Pioneer should have plenty of power to drive the 2B to comfortable listening levels, but if you want to really crank it, those SDAs love clean high current amps. (not Crown).
I have a pair that I'm running with an 80wpc Yamaha receiver and it has no problem driving them to an average of 80dB without straining. The Pioneers from that era were conservatively rated and overbuilt.
If it is just the tweeter cutting out, like F1 said above, its time to take apart the crossover and replace that poly switch. If you are adventurous, you can also think about upgrading some other crossover parts while you are in there.
You'll probably want to take your time and read up in this section of the forum: https://forum.polkaudio.com/categories/vintage-speakers
There are threads with schematics for the speakers and many, many upgrade/modification projects documented there.
