BTW, I have to wait for the admin to approve my registration to the emotiva site.
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modwright kwa 100se, modwright ls100, mindsp XO, rca connections, 10 inch woofer (Dayton RS270), seems like a sensitivity issue does not have weight to the low end. |
Wow lots of great suggestions THANK YOU ALL!! very, very, kind.
I am using the 0.775 input setting on the crown. The minidsp is a 2x4 HD. Speakers are DIY. Woofer is sealed and midrange is OB. I removed the passive XO from the woofer cabinet. Aux, I can reinsert the passive XO external to the cabinet and not use the mini: Good suggestion. Note: I was able to get some improvement volume wise by adjusting the gain to +6db on the mini. That helped. regarding the 30 ohms impedance on the woofer, I could put in a zobel to tame that right? Now it seems to be a qualitative issue, bass is blah.
Lots of great suggestions.I can't thank everyone enough.
Question: exchanging the crown for another similar amp (QSC) would not yield an improvement correct? also, more power wouldn't help right? I think the Emotiva or used A/B amp with a good supply would yield better results.
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BTW, I am only using the LP crossover in the mini @ 225 hz. I would not even consider using the HP to the Modwright. The Modwright is a wonderful piece of equipment and Dan is a great gut to work with.
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atmosphere I did confirm polarity is correct.
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will definitely speak with Dan. Also, i just bought a used parasound amp and I will see if that helps. Also a buddy is lending me an active XO to try.
Thanks again. |
Aux i got a HCA 1000. They are supposed to have high current capability. If I need to move up the ladder eventually Ill do so.
The XO is a Pioneer SF 700. I will use it only as a low pass at approx 200hz. This is to compare with the mindsp re input impedance and output voltage. I am using a cap on the input of the Modwright as a hi pass. |
atmosphere: we agree. I did find that the phase relationship between drivers was messed up. I had to invert my mid and put the tweeter in positive phase. I use the omnimic and the impulse was negative. Now it is positive. I believe we are saying the same thing :)
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Ill check that later today. I am getting improvement in the system as I work on it. However I would say the bass is not there yet. Ill drive the crown directly from the pre. I would think there would be a sonic difference and will report back. Thanks.
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almarg, Dan agreed with you. he said 20K is good input impedance 30K is ideal. He is very helpful, one of the nicest guys to deal with. Love his product and his attitude, good karma for sure. I purchased (on his suggestion) 2 output coupling caps to help solve the problem. Your suggestions and help are greatly appreciated. Thanks all was I work through this. I am confident it will be solved in time and with money Lol |
W4S St500? Adcom GFA555? emotiva xpa-2? |
Bingo :)
BTW I see a parasound 2125 for $340. 150wpc. a little bit newer that the hca series and still cheap. 35amp and 33k input imp.
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I bypassed the mindsp and went straight to the crown on the woofer and KWA100SE on the mid/twt. It did sound better. Not wonderful, but better. Next is to try the active XO with a higher input impedance (once I can get it). New amp should be here Thursday. |
Al, the pioneer is just for testing purposes. If I decide to go for an active XO I will shop for a better one. BTW, I just checked, the input impedance of the parasound is 33k!!!!! Thats great! and the sensitivity is 1.1 for full rated output. This is going to get interesting. I believe I am headed in a better direction. BTW, if you have any suggestions on XO's please suggest. Thanks again. |
New development: A buddy of mine with more equipment than shelves to use this stuff (lol) lent me a Antimode 2.0. Apparently it has a Xo in it. Input impedance not specified. |
my woofers are 86-87db sensitivity. My mid/tweeters are 90db,
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Thanks aux I'll check it out. |
Well the parasound amp arrived. And I have to say if I didnt have bad luck I would have no luck at all. I turned it on and it does have more balls than the crown but then I noticed the current limit LED's lighting/ I called Parasound and they said it is probably defective. Sure enough, I opened the unit and the electrolytics are leaking. Thats what I get for buying an old piece of equipment. I'll look for a newer and more powerful amp. Whose got the stamina to hang in there with me ha ha :-P
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agreed. usually you don't want to put any resistors in line with the woofer, right?. BTW, the speakers are my design and I use mills or mundorf resistors to pad down when needed. high now I have them running wide open!! I was hoping an amp might have some adjustment.. Just got a recommendation from someone about ART SLA-2. Looks to be pro sound. Not sure I want to go that route unless I know for sure its good.
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Lol Aux I have to spend a bit more to get something newer and not so "vintage" ha ha. The parasound is so old that the electrolytic caps are leaking. |
aux, I tried to find the stuff for sale in the emporium but I dont see where the stuff is for sale.
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I do that but I dont get an area where stuff is being sold. I'll try on another computer. |
OK so today I got some improvements. I got the good caps from Modwright and installed in my KAW 100SE. That sings sweet now. I had the woofer amp plugged into a power conditioner, I plugged them directly into the wall. I worked with the Xo points/slopes and now it's beginning to sound much better. Not perfect but it has come a long way. Now i still have some caps Dan sent me to install on the LS100 that he says will improve the bass response. I'll do that tomorrow.
Stay tuned :) |
Caps installed. deeper low end response. PLayiing with Xo for best Xo point.
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Aux,
right now I have a mindsp in the circuit. Since I am in an audio club I am fortunate to have loaner equipment available. So today someone lent me a Dahlquist LP-1. I know vintage Lol! It has a higher input impedance so I want to what the effect of that is.
On a related note,at this meeting the host was using GR Research dual 12 OB woofers with the A370PEQ amps. It sounded very good. I like OB stuff. However it is around 3K for that alone. Ultimately I would like to build a pair next summer. Hopefully I can save some money DIY. |
Aux,
BTW that supply looks nice. I would like to power 2-3 pieces of equipment with that. All low current draw. Do you think I would have to buy 3 or add connectors to supply multiple devices?
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Stringreen, I have been told the same by other people as well. I am too far down the road now. Maybe in the future I'll reconfigure. I have been fine tuning it and it sounds pretty good right now. Still needs more impact but I have some options. |
