What happened to the D'Lite 22 !?!?

[dragonbat13]

So back to this PT

http://www.classictone.net/40-18029.pdf

This is a bassman spec transformer. I could use that to work with either dual 6v6 or dual 6l6 with a rebias when swapping tubes, correct?

Then I would need a OT. I have heard a marshall 50 watt and a prosonic OT recommended.

What would be the best OT specifcations for use with this power tube setup?

[Teleguy61]

http://www.classictone.net/40-18005.pdf is a little heavier, but does not include the 5V taps. If you are using relays, many use a separate supply for them.
http://www.classictone.net/40-18011.pdf is a fine OPT, for both 6V6 and 6L6 applications.

[dragonbat13]

OK here are the specs of the PTs I have been looking at

Hammond 291EX
330-0-53-330 @ 276ma
6.5V @ 3.15a

MCI 40-18005
330-0-53-330 @ 240ma
6.5v @ 3.15

MCI-18029
355-0-355 @ 200ma
6.3v @ 5a
5v @ 3a

MCI 40-18041
325-0-50-325 @ 180ma
6.3 @ 4.5
5v @ 3a

The two top ones are the ones I am considering. What would be the reason for the current rating of the Hammond 291EX compared to the MCI below it? Unless the MCI is simply a better quality built transformer I am going to go with the hammond.

[ToneMerc]

I'm going to throw this out there as you seem intent on pushing the physical limits of that chassis. That BN chassis is laid out unlike a traditional D amp chassis and it is 2 inches shorter that a normal. Thus, space is a premium. So when someone mentions using a separate relay supply, it isn't that exactly easy when using this chassis. I've built 4 amps (2 and 4 holers ) in that chassis and I would not use a PT without a relay tap, it causes too much grief.

In my earlier replies I gave you the specs for a PT that would cover what you are trying to do and would drop right in without cutting and with no fitment issues. How much is peace of mind worth?

Take the time you've spent looking for a PT and then include the time cutting your chassis, drilling new holes and making different sized boards because you used a larger footprint PT. IMHO, the proper PT is well worth the extra money, which isn't a whole lot more that the cost of a Hammond.

Good luck on getting anything from BN, thus I would have Heyboer wind me a PT. I would explore all my options, but it's your coin and project.

Here's a Twin reverb equivalent Vibrolux sized PT that will drop right into your chassis.

good luck

TM

[dragonbat13]

So what you were saying with this

022723
325-0-45-325 @ 300mA
6.3V@ 450mA
3.15-0-3.15 @ 6A

EDIT: (Not to argue, but is the 450ma correct? Looking at most trannys it would seem that you ment 4.5A on the 6.3 tap, which makes more sense from what I have read on all this so far)

Is that I need to have a custom wound 022723 footprint with the voltage and current specs? I have no problem having that done as long is its not something like double the money just to have it done. I would love to have a drop in PT for this.

I had been looking for a standard application PT with the current specs shown, but couldnt find any. That was why I was posting all those specs of the slightly larger footprints. I figured that was the only way I was going to get it.

Do you think a custom tranny would be under 130 dollars plus shipping?
EDIT: and also, if I were to have a custom PT there isnt any reason I couldnt have a custom OT built at the same time, If need be.

On another note, there are several different fifty watt output trannies out there. Almost all of them would work with this chassis, I think.

Here is the list of them I made

MCI 40,50 and 60 watt output transformers

Part number
power rating
Imp. specs
Mounting hole spacing in inches(4 bolt noted when applicable)

FENDER Type

40-18006
40 watt
4000/4,8,16
3 9/16

40-18088
40 watt
6000/2.67,4,8
3 9/16

40-18011
50/60 watt
4200/4
3 1/2 x 2 (four bolt)

40-18009
50/60w
(40-18001 is the same specs with M6 option)
4200/4,8,16
3 1/2 x 2 1/16 (four bolt)

MARSHAL type

40-18039
45 watt
8000/4,8,16
2 1/2 x 2 7/16b (four bolt)

40-18025
50 watt
3600/4,8,16
2 1/2 x 2 3/8 (four bolt)

GENERAL PROJECT

40-18092
50/60 watt
4200/4,8,16
3 1/4 x 2 (four bolt)


Is there any one that would work best?

[M Fowler]

That 6.3V@ 450mA is to power the 6v relays.

This tap 3.15-0-3.15 @ 6A is for your filaments.

If you use a standard available 50w power transformer as suggested it will have 5v tube rectifier tap which you can use to power your relays using a regulator. You would then use diode rectification not a tube rectifier.

The 250 to 300mA rating on the HT is great for 50w amp while a 100w amp uses 400-500mA HT.

You need to slow down and listen to what Tonemerc and talbany are telling you.

Mark

[Structo]

Yes, please listen to people that have actually built these amps.

[ToneMerc]

So what you were saying with this

022723
325-0-45-325 @ 300mA
6.3V@ 450mA
3.15-0-3.15 @ 6A

EDIT: (Not to argue, but is the 450ma correct? Looking at most trannys it would seem that you ment 4.5A on the 6.3 tap, which makes more sense from what I have read on all this so far)

Is that I need to have a custom wound 022723 footprint with the voltage and current specs? I have no problem having that done as long is its not something like double the money just to have it done. I would love to have a drop in PT for this.

Do you think a custom tranny would be under 130 dollars plus shipping?
EDIT: and also, if I were to have a custom PT there isnt any reason I couldnt have a custom OT built at the same time, If need be.

Yes, it's correct. The 6.3V/450mA tap is for the relay supply. With a unregulated bridge relay supply this will give around 8.8V unloaded for the relays . Which will easily power two 5V relays & mulitple LEDS with the coils activated using the Omron G5V-H1 relays. If all you are going to run is one relay, then 5V/250mA is plenty for a single Omron G5V relay.

3.15-0-3.15A @ 6A is the filament tap. If you don't want a center tap for the filaments, then just 6A. The nice thing about a custom wind, you pick whatever you want, even wire colors.

022723 frame
Pri: 120V
Sec: 325-45-0-325
6.3V @ 450mA
6.3V @ 6A

022723 frame
Pri: 120V
Sec: 325-45-0-325
6.3V @ 450mA
3.15-0-3.15 @ 6V CT


Cost- the last quote I received for one piece of almost an exact unit was well inside $130 shipped.

OT- yes you can have them wind you a OT as well. This is a dual primary OT , IIRC it's the same frame size as the 44W BN OT. However, have it verified.

HTS-9137-M14: 6.6K/4.4K 4-8-16

Awhile back there was a member selling pcb relay boards, it might have been Colossal, not sure.

TM

[ToneMerc]

PI trimmer board

TM

[M Fowler]

Awhile back there was a member selling pcb relay boards, it might have been Colossal, not sure.

TM

Correct colossal was selling those nice regulator boards and relay boards.

Mark

[dragonbat13]

Ok I kept searching and FINALLY found the BN D'lite 44 specs, which were the same as the ones recommended. I sent them to Heyboer as follows

Power Transformers Specs: 100v, 120v, 200v, 220v, 230v/240v Primary

325 V secondary taps @300 mA, center tapped (325v-0-50v-325v)

6.3V center tapped @ 7A (3.15v-0-3.15v)

5V & 6.3V @ 3 A (5v-6.3v-0)

50V bias tap

center-tapped heater winding and hum shield.

2-1/2" x 3-1/8" mounting centers.

----------------------------------------------------------

Output Transformer Specs:

dual primary winding at 4.4K & 6.2K for use with 6V6 @ 22w, 6L6 @ 44w or
EL34 @ 44w.

Paper tube with paper layered interleaved windings with 4.4K & 6.2K ohm
primary taps and 4 - 8 - 16 ohm secondary taps for single or multiple
speaker set ups.

Two hole surface mount with 3 5/8 mounting center to center


These are the prices
Power Transformer $ 160.00
Output $ 90.00


I am fine with this, it would probably put them at under 300 shipped.

Did I forget anything, or is there any better way to have it built (I doubt it)?

EDIT: I see that these were different from those recommended
Sec: 325-45-0-325
6.3V @ 450mA

instead of 325-50-0-325 and 5V & 6.3V @ 3 A (5v-6.3v-0). I suppose the recommended specs are better.

and 6.6k/4.4k instead of 6.2k/4.4k


I am sorry for dragging this out, I was confused about having to have the transformers custom wound and was thinking that everybody was recommending off the shelf stuff. I appreciate all the help.

[ToneMerc]

FYI, you don't need the export(100,200,230,240) taps on the primary, it's just more stray flying leads to secure or cut away and it increases the cost of the PT.

Also, the relay taps (5-6.3-0) you don't need 3A. Moss had these PT's wound as a do all, you don't need rectifier rated current taps for the relays.


YW

TM

[dragonbat13]

I would leave the export taps out. The amp needs as much room as it gets. Also will go with the recommended relay tap.

I just used the BN specs so that Heyboer would have enough info to give me a good quote. I will send the specs that TM posted with the frame sizes and such.

[M Fowler]

I don't get this at all?

You could have just used off the shelf 50w iron which has the 5v tap that you would use with colossal's regulator to power the relay boards.

When you get into 100w transformers then we order special winds to include the 5v tap so we don't have to use an additional small 6v 450mA PT.

Mark

[ToneMerc]

I don't get this at all?

You could have just used off the shelf 50w iron which has the 5v tap that you would use with colossal's regulator to power the relay boards.

When you get into 100w transformers then we order special winds to include the 5v tap so we don't have to use an additional small 6v 450mA PT.

Mark

Mark, yes it's easy if he was only going to run a pair of 6V6's. The chassis takes Vibrolux sized PT iron to drop in fit the chassis mounting centers and cutout. Thus, he could have just grabbed an off the shelf VL(022723, MCI 40-18041) PT and used any OT iron, which was my initial recommedation.

Somewhere along the lines he switched gears to setting up for 6L6's/6V6s and or a possible quad of 6V6's. Therefore, we have come full circle to really duplicating the "all options" transformer package that he could have purchased directly from Moss, aka Brownnote.

The custom PT is a drop in fit which will support whatever he decides to do without cutting his existing chassis or drilling new board mounting holes, etc.


TM