| Heyboer OPT iron vs Hammond? [message #8919] |
Tue, 19 April 2005 21:12  |
AD5GB
Messages: 3
Registered: May 2009
Location: United States
|
Esquire |
|
|
Anyone got any comments on the comparison? I got a great quote for a 300W P-P OPT from Heyboer. I can't help but feel a bit skeptical tho'
since life has taught me that you tend to "get what you pay for". Anyway... thanks in advance for your thoughts!
|
|
|
|
| Re: Heyboer OPT iron vs Hammond? [message #8921 is a reply to message #8919] |
Wed, 20 April 2005 19:58  |
PakProtector
Messages: 935
Registered: May 2009
|
Illuminati (2nd Degree) |
|
|
|
I would say that it would depend on what the design is. I got those guys to unwind a Peerless 20-20 of the 40W/10k a-a flavour( the S-265-Q ) and copies are ~$140 or so with better materials. It is *NOT* a very simple wind though. What is the impedance ratio? is it a plate-voice coil or something else? Also what did you ask for? I got a moderately priced quote on a similar wattage ( ~10 square inches of core area ) which seemed quite reasonable. I have since learned a bit more and am designing something a bit different for that same project. Bottom line is that you get what you specify, so make sure you specify exactly what you want. Lots of drawings and redudundancy of the descriptions and call-outs on special details. they have made lots of stuff for me, and at least one OEM I am aware of. I don't look anywhere else.
regards,
Douglas
|
|
|
|
| Heyboer OPT iron vs Hammond? [message #8922 is a reply to message #8921] |
Thu, 21 April 2005 21:13 |
AD5GB
Messages: 3
Registered: May 2009
Location: United States
|
Esquire |
|
|
|
Hey Doug, What I asked for was basically a clone of the 'big' Hammond P-P OPT.
1.9K primary, 4,8 and 16 ohm secondary, 280 watt capability, UL taps,
and 28 pounds worth of iron and copper. They quoted a fantastic
price for the unit. Since I'm not a transformer expert by any means,
I have nothing to go by other than the 'rules-of-thumb' passed down to
me by my ham radio mentors. Further, the book I'm trying to locate on
the subject seems to have become forever elusive and more expensive than
the audio iron itself. They also quoted me an outstanding price for a power XFMR for a variable voltage (2.5KV-4KV) supply for my amateur radio amp projects.
What is a bit disturbing about that is that they said the weight
would be around 30#, which seems a bit light for a 3.2KVA power
transformer to me. Since I've not been able to turn up even one negative comment while
Googling for Heyboer, ( just a whole bunch of satisfied customers )
I'll probably give 'em a shot. Wish I knew more about audio iron
so I knew more about what to ask for. Kind regards!
|
|
|
|
|
|
|
|
| Heyboer OPT iron vs Hammond? [message #8925 is a reply to message #8924] |
Fri, 22 April 2005 17:40 |
AD5GB
Messages: 3
Registered: May 2009
Location: United States
|
Esquire |
|
|
|
Greetings, I've just gone to their website ( http://www.heyboertransformers.com ) and contacted them via the email links provided there. Regards
|
|
|
|
|
|
| Heyboer OPTx capabilities... [message #8927 is a reply to message #8924] |
Sat, 23 April 2005 14:50 |
PakProtector
Messages: 935
Registered: May 2009
|
Illuminati (2nd Degree) |
|
|
|
your best bet is to ask about a specific design you'd like them to make( like a Dynaco A-451 or Peerless S-265-Q or...). Or to ask for a design for a specific purpose, Hi-Fi or Guitar or _____. There are a bunch of their guitar amp OPTx's listed ont he website but nearly none of the old Hi-Fi. They also do new design work. They might also have a custom propriatary wind which can be wound with permission.
regards,
Douglas
|
|
|
|
Posting Rules
Members
Search
Help
Register
Login
Get a T-Shirt!
