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FDP Forum / Amp Mods, Repairs, and Projects / Need someone to build me a lineout for a Bassman RI LTD

K9 Big Dog
Contributing Member
**********

NY

Molon Labe!
May 25th, 2017 01:23 PM   Edit   Profile   Print Topic   Search Topic

Gents, I'm hoping someone here will be willing to help me out.
I'm soon going to be acquiring a 59 RI LTD with some tube mods done for harp. I'd like to add a lineout jack to the back of the amp. Weber used to sell a kit on their site for $30 but I can't find it anymore so I'm thinking they discontinued it. I have the kit installed on my 5F2H amp. It consists of a 1/4" jack, a couple resistors and a pot/knob for adjusting the signal sent to the PA. The pot and jack are mounted to small strip of metal that is attached to the inside of the back of the amp. Pretty sure it's getting the signal off of one of the speaker terminals, either soldered on or alligator clipped.

Any help available? I also am not expecting/asking anyone to do this for free.

Hammond101
Contributing Member
**********

So. Cal. USA

May 25th, 2017 01:31 PM   Edit   Profile   Print Topic   Search Topic

Simple enough to build. Here is a device already assembled for you. Connects to speaker level or high (Hammond) Pre/line out.

It's a little pricey. I keep one with my PA gear just in case. Another with my gigging GTR stuff.

You can just Velcro this thing inside your cab and use when needed.

This Box

Hammond101
Contributing Member
**********

So. Cal. USA

May 25th, 2017 01:36 PM   Edit   Profile   Print Topic   Search Topic

If you wish to build one for about $15 including a box to put it in....

This basically the box/circuit used for connecting a Hammond to a Marshall amp ala Jon Lord, Deep Purple.

Looky here

K9 Big Dog
Contributing Member
**********

NY

Molon Labe!
May 25th, 2017 03:52 PM   Edit   Profile   Print Topic   Search Topic

I'm just looking to send a line level signal to the PA, preferably tapped off a speaker. That Trek box might just fit the bill. My Leslie 122 is 40 watts and the Bassman is 45 so I'm thinking that any step down resistors in there are probably ok.
How does it hook up?

Hammond101
Contributing Member
**********

So. Cal. USA

May 25th, 2017 04:44 PM   Edit   Profile   Print Topic   Search Topic

You simply connect to the leads of one of your speakers. If your speakers have double male spade lugs you can just crimp female spade to the leads. Easy.

The box from Goff has a level control so you can adjust level to suit your devices input.

Note that this is not designed to drive a Leslie unless you have a Leslie Combo Preamp between the line out box and your 122. Then it would work perfectly.

Steve Dallman
Contributing Member
**********

Merrill, Wisconsin

Age is just a number...mine is big
May 26th, 2017 09:34 AM   Edit   Profile   Print Topic   Search Topic

At the bottom of this article is a very simple line out. 10k resistor, 5k pot and a jack. Connect it to either a speaker, or put a plug on it, and plug it into your ext speaker jack.

Now this type has no speaker compensation. Record off this, or run it into a PA and without extensive EQ it will not sound like a mic'd speaker

External link

pdf64

UK

May 27th, 2017 06:40 AM   Edit   Profile   Print Topic   Search Topic

Yes, surprised that you like a simple 'line out to the PA' on the Princeton, some sort of speaker emulation is often thought essential.
Have you tried just micing the speaker?
Likely to be a far more accurate sound even with a cheap mic.
Simple line outs are usually only acceptable for driving another amp (ie which then feeds another guitar type speaker).

K9 Big Dog
Contributing Member
**********

NY

Molon Labe!
May 27th, 2017 06:56 AM   Edit   Profile   Print Topic   Search Topic

Hmmm. I'm starting to think that maybe I'd be better off strapping a Red Box or a Palmer DI to the back of the amp and using that to get to the PA. I'm reluctant to mic it only because of the feedback issues when miking a harp amp. The Red Box and the Palmer unit both have cabinet emulators that come pretty close to a Bassman if what I'm reading is true.
However, I may go ahead and install a line out anyway and them feed it to the PA through a Cab Simulator DI box.

(This message was last edited by K9 Big Dog at 09:13 AM, May 27th, 2017)

K9 Big Dog
Contributing Member
**********

NY

Molon Labe!
May 31st, 2017 09:22 AM   Edit   Profile   Print Topic   Search Topic

OK, another couple questions:

I'm planning to replace the two bottom speakers on the Bassman with Eminence Lil Buddy's. These speakers have dual spade connectors for each terminal on them.

1. Can I simply connect a 1/4" to dual spade cable to the extra terminals on one of the speakers and run the 1/4" plug into a speaker simulator/DI like a Red Box or Palmer unit? This would be way simpler than adding a lineout kit. I'm thinking that I wouldn't need put anything in between the amp and speaker by doing it this way.

2. If the answer to #1 is yes, is it ok to leave the Red Box plugged in without phantom power to it even when I'm not using it as a DI box?


reverendrob
FDP Data Goon
Moderator

We all want

our time in hell
Jun 4th, 2017 04:16 PM   Edit   Profile   Print Topic   Search Topic

For that function, and so it didn't sound awful, I got one of the Weber attenuators with the 1/4" line/DI outs with a treble boost switch.

If you don't want to attenuate, just turn the thing to max output, and hook up the speaker - the line still works.

Can have it go silent at any time as well as part of that.

Steve Dallman
Contributing Member
**********

Merrill, Wisconsin

Age is just a number...mine is big
Jun 8th, 2017 10:37 AM   Edit   Profile   Print Topic   Search Topic

I have had a couple Peavey EDI's for years. They are passive, speaker compensated direct boxes. There is a timbre trimpot on the side.

These things are great. They are not speaker load boxes, but are a DI with circuitry (built around caps and an inductor) that sounds like a mic'd speaker.

I found mine used for under $20. I even built one, and put it inside an amp. (I no longer have the schematic.)

Highly recommended...by me.

Peavey EDI

FDP Forum / Amp Mods, Repairs, and Projects / Need someone to build me a lineout for a Bassman RI LTD




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