SDA-2B Crossover Parts List

fbm211

May I suggest you rewire your speakers with neo-tech 18g solid teflon copper.Sonic craft has it.

audiocr381ve

fbm211 wrote: »

May I suggest you rewire your speakers with neo-tech 18g solid teflon copper.Sonic craft has it.

A fellow 2BTL owner offering advice? I'm all ears!

What kind of improvement to did you experience after rewiring with the neo-tech?

inspiredsports

fbm211 wrote: »

May I suggest you rewire your speakers with neo-tech 18g solid teflon copper.Sonic craft has it.

Thanks, but my inductors are 14 AWG so I won't go smaller than that. You did read post #88 above where Erse technicians wrote that bare naked 14 AWG Romex would suffice?

I will probably end up using some extra multi-stranded David Manley/VTL silver coated oxygen free copper wire I have lying around, but I don't doubt the raw Romex ground would work.

Joe08867

Do not rewire with 18awg, 14 should be a minimum for a rewire. 18awg will act as a bottleneck for the signal and can't hold thesame amount of energy as the 14awg inductor. If the inductors are 14awg go with an equivalent or greater wire.

Schurkey

inspiredsports wrote: »

You did read post #88 above where Erse technicians wrote that bare naked 14 AWG Romex would suffice?

I remember Sam Tellig of Stereophile--back when he was the "Audio Cheapskate"--waxing poetic about Lars' "well wire"; no doubt solid-core house wiring used to power a water pump, re-tasked as speaker cable. Blast from the past.

My "garage system" is using 12-gauge house wire "in wall" as speaker cable.

About the time I start thinking that house wire (copper) ain't cheap any more, I remember what a bargain it is compared to "boutique brand" audiophile copper.

fbm211

OK my fault.
I meant to say 16awg since that is what polk used and a lot of other long time polkies said would be the right choice.
I dont know anything about the inductor mod so I'll leave that up to those of who have done it.Your changing the polk design by using different awg wire but maybe using a different inductor requires that so have at it.
Im not sure if Ill ever do that inductor mod or not.Sounds like a great idea though.

The 16awg neo-tech teflon copper wire did wonders foe the SQ of my 2Bs.Improved the clarity and they just sounded like a sheet was covering them before the rewire.(Must have been that 20+ year old oxidized wire.)I have done other mods to them also like New Eichmann binding posts,cardas IC posts with a DIY IC cable that I terminated with cardas silver spades,xover recap with mundorf resistors,all new mid drivers,and the TL mod,And of course the dynamat mod that did wonders for the midrange.

inspiredsports

fbm211 wrote: »

OK my fault.
I meant to say 16awg since that is what polk used and a lot of other long time polkies said would be the right choice.
I dont know anything about the inductor mod so I'll leave that up to those of who have done it.Your changing the polk design by using different awg wire but maybe using a different inductor requires that so have at it.
Im not sure if Ill ever do that inductor mod or not.Sounds like a great idea though.

The 16awg neo-tech teflon copper wire did wonders foe the SQ of my 2Bs.Improved the clarity and they just sounded like a sheet was covering them before the rewire.(Must have been that 20+ year old oxidized wire.)I have done other mods to them also like New Eichmann binding posts,cardas IC posts with a DIY IC cable that I terminated with cardas silver spades,xover recap with mundorf resistors,all new mid drivers,and the TL mod,And of course the dynamat mod that did wonders for the midrange.

fbm, you live in a COLLEGE TOWN for c##sssake, act like it!

I've written 2 dozen times I'm using 14 GAUGE, 14 GAUGE, 14 GAUGE inductors.

14 AWG is LARGER than 18 AWG
14 AWG is LARGER than 16 AWG

Wire Gauge is SMALLER NUMBER = LARGER DIAMETER WIRE.

I need good quality 14 or 12 AWG for my project. ERSE says the bare ground of 14 AWG (or LARGER) Romex is fine.

fbm211

I have 4 -3 foot runs of 14awg T-14 you can have if you want.(DH Labs)

inspiredsports

fbm211 wrote: »

I have 4 -3 foot runs of 14awg T-14 you can have if you want.(DH Labs)

Very kind! (and I'm just bustin' your chops above).

I've decided I'm going to overkill (as usual) and use the Silver plated OFC Manley/VTL wire I have on hand.

inspiredsports

DK expressed a concern about transient response in audiocre8tive's thread, but I'm now trying to contain the knowledge base and keep it here in my thread. I sent Erse the following.

Reading between the lines, I believe the series technique is important, and 600wrms on the 14AWG (500wrms on the 16AWG) is a real limit.

##################################################

Sent: Friday, October 28, 2011 2:11 PM
To: Jim Smolik
Subject: Super Q Transient Response

Hi Jim,

Many of us at Club Polk have or are in the process of replacing 18 gauge air core inductors in the 16 to 17mH range with your 16mH 14 AWG or 17mH 16 AWG Super Q's.

Speaker capabilities range from 200 to 1,000 watt power handling capabilitites.

My particluar speakers (used 2 each 8mH 14 AWG to get 16mH) are 500 watt capable.

There has been come concern about saturation during high transient music pieces that would seem to be under your rated threshold, but may burst over for a few milliseconds.

Can you share any info you might have about transient power handling capabilities of the Super Q's ??

Sincerely,
Greg W
Email:
Phone:
_end of message

#################################################################

---

Original Message

---

From: Jim Smolik [mailto:jim.smolik@erseaudio.com]
Sent: Friday, October 28, 2011 4:02 PM
To: xx
Subject: RE: Super Q Transient Response

Greg:

YOU will not have a problem with these transient powers. Our 500wrms is based on true RMS continuous power.

The larger the value of inductor the more turns, the more turns the more flux in core. If flux is to [too] high then you could saturate. In your case I think you should be fine.

Thanks,

Jim Smolik
ERSE Audio
PH : 440-205-9658
FAX: 440-205-9659
email: jim.smolik@erse.cc
website : www.erseaudio.com
#################################################################

audiocr381ve

inspiredsports wrote: »

DK expressed a concern about transient response in audiocre8tive's thread, but I'm now trying to contain the knowledge base and keep it here in my thread. I sent Erse the following.

Reading between the lines, I believe the series technique is important, and 600wrms on the 14AWG (500wrms on the 16AWG) is a real limit.

##################################################

Sent: Friday, October 28, 2011 2:11 PM
To: Jim Smolik
Subject: Super Q Transient Response

Hi Jim,

Many of us at Club Polk have or are in the process of replacing 18 gauge air core inductors in the 16 to 17mH range with your 16mH 14 AWG or 17mH 16 AWG Super Q's.

Speaker capabilities range from 200 to 1,000 watt power handling capabilitites.

My particluar speakers (used 2 each 8mH 14 AWG to get 16mH) are 500 watt capable.

There has been come concern about saturation during high transient music pieces that would seem to be under your rated threshold, but may burst over for a few milliseconds.

Can you share any info you might have about transient power handling capabilities of the Super Q's ??

Sincerely,
Greg W
Email:
Phone:
_end of message

#################################################################

---

Original Message

---

From: Jim Smolik [mailto:jim.smolik@erseaudio.com]
Sent: Friday, October 28, 2011 4:02 PM
To: xx
Subject: RE: Super Q Transient Response

Greg:

YOU will not have a problem with these transient powers. Our 500wrms is based on true RMS continuous power.

The larger the value of inductor the more turns, the more turns the more flux in core. If flux is to high then you could saturate. In your case I think you should be fine.

Thanks,

Jim Smolik
ERSE Audio
PH : 440-205-9658
FAX: 440-205-9659
email: jim.smolik@erse.cc
website : www.erseaudio.com
#################################################################

Great stuff! How is everything sounding right now?

inspiredsports

Further, I now have about 100 hours of listening completed, much at higher db levels than normal to really push the bass.

I've pulled out and listened to a lot of bassist heavy stuff (Chris Squire/Yes, Jon Entwistle/Ox/The Who, Beatles/Paul McCarntey, Sting/Police, etc., etc.).

The Erse are not yet hardwired in, but I've heard enough that I'm going to open the cabinets back up and bolt/solder everything in place as I don't believe these will ever saturate within the operating parameters of my ears and the other 2B components.

The quality of the bass coming from these speakers in markedly improved; it's faster, tighter and more engaging.

I'm now very curious to know what top quality air-cores would sound like, but believe this solution is most, if not all the way there for a small ($65 per cabinet) investment.