t/s specs for indian drivers

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#305
Cotact details of Bolton

Unfortunately, Bolton does not have any website. The owner Mr. Monga is a very nice man and will be very helpful once he knows how serious you are. If the model you are looking for is not available with your local dealer, you can persuade him to build and ship it to you directly.

You can reach Bolton at:

Bolton Private Ltd
14/3 Milestone
Mathura Road
Faridabad 121 003 Haryana
Tel 0129 227 5410, 0129 227 5332
 
#306
Cotact details of Bolton

Unfortunately, Bolton does not have any website. The owner Mr. Monga is a very nice man and will be very helpful once he knows how serious you are. If the model you are looking for is not available with your local dealer, you can persuade him to build and ship it to you directly.

You can reach Bolton at:

Bolton Private Ltd
14/3 Milestone
Mathura Road
Faridabad 121 003 Haryana
Tel 0129 227 5410, 0129 227 5332
 
#308
hi guys a new entry

HI GUYS i mean sangraam, navin from mumbai and somakmaitra from calcutta and cocophonix from texsas. well me my name is binil from india near calcutta... from a place know as Jamshedpur. well i have been an audiophile for quite some time but have not been able to do much due to the unavailablity of components here in india. well i hwas loosing hope when i came across DIY Audio and u guy s.... well here i am a nd hope to do something worth while soon.
Binil😎
 
#309
Dainty: New brand, looks decent

Hi,

I came across some new drivers which looked quite decent as far as fit and finish is concerned. Tha brand is Dainty. I think it is a Taiwan brand. Could not find a web site. I will measure the T/S params and let you know the details. I bought two different models of their 4" woofers. Can anyone let me know how to get a reponse curve for woofers.I want tojnow when cone breakup comes in ? That will enable me to cross them appropriately. The spec sheet says 70hz-6khz. But I am sure at 6khz it would sound awful.

Thanks in advance,
Regards,
Goldy
 
#311
Dainty woofers

Hi,

I bought two 4 inchers from Globe Electronics at SP road here in Bangalore. I tried measuring Xmax for them by giving a sine of 20Hz from PC. Although it did produce some sound,(20hz is not supposed to produce audible sound) but may be the sound card is is to be blamed). The Daintees performed better than YP 8"woofer and Bolton 4 inchers. I will measure the Thiel/Small params and keep you guys posted. The difference in both Daintees is that one is paper cone with 30Watts RMS while other looks like the bigger brother with poly cone with 40Watts of RMS power and a dumped vented pole piece/backplate.

I did manage to get their catalogure from the shop.
Pls go ahead with the 6". They are below 500 Rs. Do let us know your results.

Regards,
Goldy
 
#312
hey this is for somak maitra

i'm looking for the above mentione Dainty Woofers in JSr but i couldn't find a single person even saying the name correctly. well my next option was kalkotta. u are from kal rite? pleas4 can u jkus find out if they are available there . if they do please tell me ok. i'm looking for 6" woofers around 40W rms ok.
Binil 😕
 
#313
Re: hi guys a new entry

brokenbinil said:
HI GUYS i mean sangraam, navin from mumbai and somakmaitra from calcutta and cocophonix from texsas. well me my name is binil from india near calcutta... from a place know as Jamshedpur. well i have been an audiophile for quite some time but have not been able to do much due to the unavailablity of components here in india. well i hwas loosing hope when i came across DIY Audio and u guy s.... well here i am a nd hope to do something worth while soon.
Binil😎
Click to expand...

Welcome to DIY Audio, which has a very active Indian sub-community (it's among the most active I've seen among non-Indian sites, correct me if I'm wrong).

Ashok is also from Jamshedpur. I don't see him around much these days. His screen name is corbato. You might try giving him a shout.

All the best and keep us posted on your projects...
 
#314
thanks for the welcome

it's great to know that so many indians are into this DIYaudio yaar . you, sangram, are correct at saying: (it's among the most active I've seen among non-Indian sites, correct me if I'm wrong).:
you are very correct and i did find corbato , in the previous mails and now came to know tht he is ashok well i haven't got a reply from him as of yet.

by the way .... i saw this china made woofers in cal at some place in chandini they had polyuterin cones and the dust caps were inverted ... they sounded pretty desent ... but the shopkeeper was missing and the only person i could find there was the care taker whu did not know a woofer from a tweeter well he lost a customer but those woofers are in my mind since then .... can u tell me any one how much does the cone material affect in the performance ....🙄
 
#315
#316
Goldy: two different models of their 4" woofers. Can anyone let me know how to get a reponse curve for woofers.I want tojnow when cone breakup comes in ? That will enable me to cross them appropriately. The spec sheet says 70hz-6khz. But I am sure at 6khz it would sound awful.
Click to expand...


Cone breakup.
Its difficult to pinpoint that without precission measurements.
However, if u have a freq response graph, and u see sharp peaks and dips at regular intervals they represent cone breakup modes.
I doubt if u'll see them on an impedence plot.

the 4" woofers.

Did u get a chance to listen to them yet. How do they sound. Do they sound squeaky, typical of what u get locally..? What models do thay have...i mean other than 4". And could u please tell me where exactly is this shop.?

ajju
 
#317
4" woofers

Hi Navin,

These are not full range or extended range drivers. So I think these need to be crossed below 6Khz. And this is not what you wanted. The fit and finish oth these drivers is quite good. Somewhere I read about Philips fullrange but could not find in the local market.


Ajju,

I did not get ca chance to liste to the woofers (IM in propes setup). Can I give a sine from my PC and record what is played by the speaker (with a MIC) and then run FFT on the recorded waveform and find out what other harmonics are present. How much will be the success in measureing the distortion this way.

Do let meknow your e-mail id I will let you know Globe elctronics' phone no. As far as location is concerned. Go to SP road. Enter the array of shops form the 'OM electronics' end and take the first left galli. On the right is Globe electronics.

I also found coated BPL woofers and silkies (it looked quite good, and resembled Dayton silky). I will try them and keep you posted

Hi Ajju and Vivek,
I intend to try a TL system with Bolton 8". Can you guys team up with me on this.

Regards,
Goldy
 
#318
hey u guy s

good to here the name BPL ... i have a BPL Woofer 4 inch dia. the one used in their BXR series of TV's for the boom box. i need the specifictaions of that woofer .... like the volume of air to be diplaced. and likes .... it's a 8 ohms/30 W unit. well tell me something how can u measure the out put impedence of my Salcon TKR amplifier. any idea guys.
binil
 
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