tweeter mid tweeter desgin from sony sa z1
sony sa z, tmt desgin and push pull or pull pull woofer ??
from gr research , and most post here claim dual tweeter does not work due to cancellation of the wave, however from sony sa z1 i array design it is telling us something different.
The tmt idea work in sony's desgin is it due to the position of the speaker should be place close to the listener ?
now for the bass and mid woofer unit, we have many threads on push pull or pull pull side firing woofer, we have also seen kplich La scala using reflection of the bass woofer what are they doing is not what we have not discussed in the forum. From what i know their cabinet is very heavy, if putting a glass of water on top of speaker there are no movement of the water. So either their woofer are unbalanced so the cabinet is very heavy to reduce the resonance or because the woofer is working and very hard and need to a heavy cabinet to reduce the resonance of any reflection.
if that back uses reflection to increase that sound dispersion like fyne audio speaker would their cut off frequency be around ? and How are they controlling their lower mid ? What trick are they using to emulate the double sided drum ?
Hands on: Sony SA-Z1 review | What Hi-Fi?
Sony Signature SA-Z1 媒體說明會
from gr research , and most post here claim dual tweeter does not work due to cancellation of the wave, however from sony sa z1 i array design it is telling us something different.
The tmt idea work in sony's desgin is it due to the position of the speaker should be place close to the listener ?
now for the bass and mid woofer unit, we have many threads on push pull or pull pull side firing woofer, we have also seen kplich La scala using reflection of the bass woofer what are they doing is not what we have not discussed in the forum. From what i know their cabinet is very heavy, if putting a glass of water on top of speaker there are no movement of the water. So either their woofer are unbalanced so the cabinet is very heavy to reduce the resonance or because the woofer is working and very hard and need to a heavy cabinet to reduce the resonance of any reflection.
if that back uses reflection to increase that sound dispersion like fyne audio speaker would their cut off frequency be around ? and How are they controlling their lower mid ? What trick are they using to emulate the double sided drum ?
Hands on: Sony SA-Z1 review | What Hi-Fi?
Sony Signature SA-Z1 媒體說明會
Focusrite iTrack Solo A10K stereo volume pot
- Parts
- 3 Replies
Hello, parts gurus.
I recently acquired a Focusrite iTrack Solo that has an issue with the Monitor knob. The headphone and line outputs only work when light pressure is applied to the knob. Let go and a second or two later the Left channel cuts out, then the Right. This occurs over the entire range of the knob, and there is no scratchiness that might lead me to believe the problem would be solved with contact cleaner.
A number of other owners of the Scarlett Solo 1st Gen, 2i2, 2i4, et al have seen this issue and some have temporarily resolved it by applying pressure to recrimp the metal tabs and enclosure around the pot. This resolved the issue for about 5 minutes in my case and then it was back to the way it was.
It has a panel mount Delta brand pot with marking A103. The shaft is D-shaped / flatted and appears to be 6mm wide x ~10mm long. There are 6 small pins in a row at the bottom and two larger outer pins connected to the pot's metal enclosure and tabs.
I think I'm looking for an A10K stereo pot, but how will I specify the pinout and size? A quick look on Digikey didn't turn up any small-quantity options so I suspect I'm not looking the right way.
Guts:
Monitor knob potentiometer:
Monitor knob bottom pins:
I recently acquired a Focusrite iTrack Solo that has an issue with the Monitor knob. The headphone and line outputs only work when light pressure is applied to the knob. Let go and a second or two later the Left channel cuts out, then the Right. This occurs over the entire range of the knob, and there is no scratchiness that might lead me to believe the problem would be solved with contact cleaner.
A number of other owners of the Scarlett Solo 1st Gen, 2i2, 2i4, et al have seen this issue and some have temporarily resolved it by applying pressure to recrimp the metal tabs and enclosure around the pot. This resolved the issue for about 5 minutes in my case and then it was back to the way it was.
It has a panel mount Delta brand pot with marking A103. The shaft is D-shaped / flatted and appears to be 6mm wide x ~10mm long. There are 6 small pins in a row at the bottom and two larger outer pins connected to the pot's metal enclosure and tabs.
I think I'm looking for an A10K stereo pot, but how will I specify the pinout and size? A quick look on Digikey didn't turn up any small-quantity options so I suspect I'm not looking the right way.
Guts:
Monitor knob potentiometer:
Monitor knob bottom pins:
FS: Housing for your designs
NOS DIY housing.
It was produced for radio amateurs in the exUSSR
All cases are in the factory box. The cases are in excellent condition.
Contents of the box
Case contents
Plastic casing, aluminum front and rear panel and internal metal chassis to accommodate two PCB. Included is a clean board made of foiled getinax
Housing dimensions
Sending from Russia. Cost $32 with free shipping
There are about 20 cases in total.
email for communication zampotech.udav#gmail.com (you need to change the # symbol to @)
It was produced for radio amateurs in the exUSSR
All cases are in the factory box. The cases are in excellent condition.
Contents of the box
Case contents
Plastic casing, aluminum front and rear panel and internal metal chassis to accommodate two PCB. Included is a clean board made of foiled getinax
Housing dimensions
Sending from Russia. Cost $32 with free shipping
There are about 20 cases in total.
email for communication zampotech.udav#gmail.com (you need to change the # symbol to @)
Celestion 66 needs mid-range
hello hopeing someone can help me , i have 2 celestion 66's very old but i love them , i need a new Mid-range speaker i think its a MD500 not to sure , ill have to take it out to be sure , i had it out just looking for loose wire's but no luck , anyone know where i can find one ? 
its sad to see them like this
its sad to see them like this
Powersupply: bluetooth speaker
- By Hayden
- Power Supplies
- 2 Replies
I need to create a powersupply (battery) with charging circuit for a compact bluetooth speaker. The major issue is to get decent power out of these little amplifier modules as you need anywhere between like 24 to 50v depending on the amp module as the higher the voltage the better they perform.
any suggestions? I can maybe run 10 small liPo batteries with a BMS board but that's a fair chunk of space it takes up and it's like $200 worth of batteries.... and can I trust those Chinese BMS boards😱
Or stupid question: maybe I can run 4 cells and using a boost converter to step up to a higher voltage? I know the current draw will go up tho but it's just a silly thought😕
I think I'm exceeding the limits of physics here hahaha
what have you guys done? Anyone have any ideas???
Cheers again 🙂
any suggestions? I can maybe run 10 small liPo batteries with a BMS board but that's a fair chunk of space it takes up and it's like $200 worth of batteries.... and can I trust those Chinese BMS boards😱
Or stupid question: maybe I can run 4 cells and using a boost converter to step up to a higher voltage? I know the current draw will go up tho but it's just a silly thought😕
I think I'm exceeding the limits of physics here hahaha
what have you guys done? Anyone have any ideas???
Cheers again 🙂
Unexpected ICEpower 125ASX2 labeling ...
Last week I stumbled across a listing on the Reverb site for new ICEpower 125ASX2 modules. The seller, a guitar store, had five available (now down to two) priced $89 each. The listing said they were for Fender Rumble 350 bass amps. The photos accompanying the listing show genuine modules as far as I can tell (date code, QC stamps, etc.). I ordered two. They arrived today.
I haven't opened either of the sealed packages. However, the package labeling caught my eye:
Made in USA? Not likely. If the part number is a Fender number, I wouldn't imagine they can just repackage boards manufactured elsewhere and alter country of origin. The genuine replacement ICEpower modules I received some time ago were shipped to me from Thailand.
Also interesting (to me, at least) the 125ASX2 illustration in the ICEpower product brochure from December, 2008 looks exactly like the clone/counterfeit boards readily available on ebay:
I haven't opened either of the sealed packages. However, the package labeling caught my eye:
Made in USA? Not likely. If the part number is a Fender number, I wouldn't imagine they can just repackage boards manufactured elsewhere and alter country of origin. The genuine replacement ICEpower modules I received some time ago were shipped to me from Thailand.
Also interesting (to me, at least) the 125ASX2 illustration in the ICEpower product brochure from December, 2008 looks exactly like the clone/counterfeit boards readily available on ebay:
Capacitor I.D
Found this little beauty in my collection.
Just curious in what it is?
I’m assuming it’s a motor run cap or a motor start cap?????
So I tried looking up the specs but there’s not much about it that states if it’s a run or a start cap.
Any info would be greatly appreciated for my future projects😱
Just curious in what it is?
I’m assuming it’s a motor run cap or a motor start cap?????
So I tried looking up the specs but there’s not much about it that states if it’s a run or a start cap.
Any info would be greatly appreciated for my future projects😱
