CSiA4 Mod

curved

I've decided after switching from CSi5 to the A4 due to space restrictions, that I really miss my 5. Since the 5 can't be used, I'm going to do a cap mod. I'm limited to time since my new job which is fine because it only has 3:

.47uF
10uF
27uF

curved

Well, I just order some Dayton Precision 1% Metallized Polypropylene Capacitors. I'll keep you all updated when they get installed.

leroyjr1

Did you order enough for me?

curved

leroyjr1 wrote: »

Did you order enough for me?

lol....You should have told me earlier

leroyjr1

Keep us updated. Sounds like a nice cheap mod that should make a big difference.

curved

Just picked up some AQ 14awg for the runs inside.

FYI - Any of you in the Milwaukee area might want to visit Flanner's. They have some Type8 20ft run for $100. Also have Type4 20 ft run for $40. I almost pulled the trigger on some type8's

leroyjr1

curved wrote: »

Just picked up some AQ 14awg for the runs inside.

FYI - Any of you in the Milwaukee area might want to visit Flanner's. They have some Type8 20ft run for $100. Also have Type4 20 ft run for $40. I almost pulled the trigger on some type8's

Dang curve why you tell me that. On my way now.

zingo

I'll be interested to see how it works out for you. To my knowledge, the only modern Polks that are being modded are the LSis, so I'm excited to here your review. You could be opening up a whole can of worms...

curved

OMG!! That's all I can say. Outstanding value mod here.

First 5 minutes of listening:
Much much bigger sound!! Voices seem to be much clearer. The other thing I noticed was the center gain was a bit too much - had to back off on it a little. Much better match for the RTi8's. Before it seemed way too thin compared to the CSi5.

I'll give you all more feedback when they burn in a bit.

leroyjr1

Time to do the 8's next. Was it fairly easy to do?

zingo

Did you swap out the resistors too?

curved

leroyjr1 wrote: »

Time to do the 8's next. Was it fairly easy to do?

It depends who you ask.....:D

It really wasn't bad.

curved

zingo wrote: »

Did you swap out the resistors too?

No....do you think it would be worth it?

zingo

Yep.

curved

I'll be ordering them when I mod my 8's since they are CHEAP!! I also might replace that dayton .47 with something higher quality - Sonic Cap, Aeon, etc.

jacob.simpson

curved wrote: »

OMG!! That's all I can say. Outstanding value mod here.

First 5 minutes of listening:
Much much bigger sound!! Voices seem to be much clearer. The other thing I noticed was the center gain was a bit too much - had to back off on it a little. Much better match for the RTi8's. Before it seemed way too thin compared to the CSi5.

I'll give you all more feedback when they burn in a bit.

I may sound stupid:o When you say you mod the caps do you replace them exactly with the same values of capacitance and voltage or do you consider any other calculations please clarify.

curved

Same capacitance. Voltage will be higher with aftermarket but don't worry about that.

curved

Update...I just got the 545II which will be powering the center. I'll let you know how the center sounds with some good clean power.

Face

I can't find a schematic, but the .47uf cap may not be needed at all. A value that small is generally used for a bypass cap. If you have the time and energy, you should try it with and without the .47uf in place. And while you're in there, I would also recommend replacing the resistors with Mills.

curved

I think I will try taking that out...

Zingo also suggested that so I think I'll swap those out soon....especially since they're so cheap.

acsubie

curved wrote: »

Just picked up some AQ 14awg for the runs inside.

FYI - Any of you in the Milwaukee area might want to visit Flanner's. They have some Type8 20ft run for $100. Also have Type4 20 ft run for $40. I almost pulled the trigger on some type8's

is that deal at Flanners still going on?" would anyone be interested in helping me out by picking by the type 4s and shipping....pretty please:)

leroyjr1

acsubie wrote: »

is that deal at Flanners still going on?" would anyone be interested in helping me out by picking by the type 4s and shipping....pretty please:)

I'll be out that way this weekend I'll check for you.

acsubie

leroyjr1 wrote: »

I'll be out that way this weekend I'll check for you.

you are the man..def. keep me posted

leroyjr1

acsubie wrote: »

you are the man..def. keep me posted

The ones they had there were used. They had both the type 4 and type 8 in twenty feet. I thought they were going to be new for that price on sale. If you want me to get you the used/demo pair let me know.

vijayl

Curved, I'm a novice in this. If you have some time, do u mind sharing a step by step direction, including the parts that I need to buy? Appreciate your help..

curved

Hooked up the 545 to it and it sounds AMAZING!! Bass is 10x better now!! It just doesn't seem as bright now either. Next mod will be resistors.....I'll post some more pics and give a better write up when I do the resistor mod.

curved

**UPDATE**

Ordered the following:
Sonic Cap .22uF (2 in each RTi8) and .47uF (replacing in A4) caps.
All Mills resistors
Dayton Caps for the rest of the 8's to match the A4

pablo_rodz

vijayl wrote: »

Curved, I'm a novice in this. If you have some time, do u mind sharing a step by step direction, including the parts that I need to buy? Appreciate your help..

x2

I would like to try some mods on my RTi 10's. Does anyone knows what could be upgrated?

curved

Update:

Replaced the .47 Dayton with a .47 Sonic Cap. See the SIZE difference!!! I also replaced the resistors with Mills resistors. Haven't had much time to evaluate it, but it's an improvement already.

Tungx2

Yes, it's been two years... how is your CSIA4 doing?

i'm looking to get that speaker and mod it

or should i just go ahead with CSIA6? since the mod cost of materials are probably going to be pricey?

jbooker82

It depends on if you have room for the 6. If you do I would get it and modd it as well.