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Post subject: Deluxe Reverb Reissue sound problem
Posted: Sat Mar 21, 2015 12:39 am
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Hi,
I have just purchased a '65 Deluxe Reverb Reissue amplifier. It is about 9 months old and in A1 (new) condition.However, when i first played it at home, after buying it from the first owner online, i was most disappointed as the amp lacked the clear crystal 'chime' that these amps are known for. Its sound is very mid range, 'boxy' may be a better way of describing it with little or no top end and really sounds awful.
I suspect its a preamp problem or a bias problem but i really have no idea.

As i am the second owner, the warranty is now void even though there is over 4 years left of it. I really want to get this amp sounding great as i have been years wanting to buy this amp and right now i am very disappointed.
Any suggestions as to what the problem may be would be much appreciated.


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Sat Mar 21, 2015 3:38 am
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What tubes do you have in the amp ?
Model number ( 12XX7 ) and brand name ( GT , JJ ....)
Speaker ; is it a Fender ?

Previous owner may put wrong one or they are defective.....

What guitar do you have , guitar cord . ?
Which amp do you use before ?


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Sat Mar 21, 2015 4:04 am
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All original factory tubes, (Groove Tubes), original Jensen speaker. Nothing different from factory. As i said, its only a few months old.
I use Klotz cables which a A1 condition wise and either play my Strat, (Lone Star), through it or my '73 Les Paul or my CIJ Telecaster. Maybe i need to swap a few preamp tubes around possibly but i am open to more suggestions re fixing this problem.
By the way the sound is bad both through the 'normal' AND 'vibrato' channels.


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Sat Mar 21, 2015 4:14 am
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Thank's for answer .
Are you sure it is the good number (12AX7 and other ) at the right place ?

You have to check tubes in first .
Both channel are "weak " ; I suspect tubes uses in both like outputs tubes ( 6V6) and Phase Inverter tube ( it is the tube close to output tubes , 12AT7 )

If all good ,check other tubes.

The only good test for "weak" tubes, is to put know good one ,Tube tester are not reliable


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Sat Mar 21, 2015 10:14 am
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The vibrato channel should be brighter than the normal channel. There is a bright cap across the vibrato volume control that should make it a lot brighter than the normal channel, up to @1/2 volume.

If you haven't heard this model of amp perform before and you just bought it, perhaps it's your expectations that need adjusting. Before I tore into it, I would recommend trying another one down at your friendly neighborhood Fender dealer. If that's possible, it would give you a baseline for comparison to yours.

While tubes may fail or have poor sound, loss of treble isn't usually a preamp tube symptom.
When you say, "chimey", I think Vox AC30. I saw one a while back that lost it's chime. Turned out to be a rectifier tube that one section went bad. It had some hum as well


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Sat Mar 21, 2015 6:45 pm
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Cheers Timsaudio for reply. I know these amps a have a bright capacitor across the vibrato channel which is why i was so surprised at its dark mid range tone. I say "chimey" because that to me is how most Fenders sound played 'clean' - i have owned many in the past and still have an old Champ and a reissue in my arsenal. To my ears they produce a clear chimey sound. (All our perceptions of this are bound to be different.)

My DRRI is definitely not operating correctly. The sound is boxy, with flabby bottom end end; no cutting high's. (These amps are known for their brightness, especially through the vibrato channel.) Maybe ill try swapping a few preamps around, but im not really that technically minded. IF, it is a preamp tube causing the problem, which one would it be to effect BOTH channels i wonder? (Thank You too stratele52 for your previous reply.)


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Sat Mar 21, 2015 8:00 pm
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Sounds like you have good ears, I'll trust that you know what you're hearing.
The other thing that comes to mind is if one power tube has gone South, you would be running half power and it would sound awful. This would be more likely, in my mind.
Try this little excercise.
First, check to see that both power tubes are glowing.
Each power tube makes half the power and half the volume.
So turn it off and pull one power tube.
Turn it back on and play for a few seconds to set a volume.
Turn the amp off and replace the power tube.
Pull the other power tube and turn the amp on
Play at the same knob settings and compare the volume with the first tube.
It won't sound good, but each power tube should produce the same volume on the same settings. If one is bad, it will be readily apparent.
For preamps, you an swap V6, the12AT7 phase inverter,the closest to the power tubes. with V3 12at7, the reverb driver. V6 is the only common preamp tube to Ch1 and Ch2 that's in the signal path,
V4 is the reverb return and you can swap it with V1 or 2. The reverb return can do funny things, but it doesn't sound likely with your symptoms.


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Sat Mar 21, 2015 8:53 pm
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If you can get a copy of the sales receipt, the warranty is still good for subsequent owners as long as they have the receipt.

BTW, this is the "Vintage Guitar Amplifiers (anything before 1985)" section of the forum, and you have a modern amp ---> " Modern Guitar Amplifiers (1985 - Current)".

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---> "The amp should be SWITCHED OFF AND UNPLUGGED before you do this!" <---

Por favor, disculpe mi español, no se llega a la práctica con mucha frecuencia.


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Mon Mar 23, 2015 2:40 am
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Thanks guys for all your replies, im sure they will be a great help! Sorry for posting my problem in the wrong section; i am new to this site as you can see.
Ill try some of your ideas in the next few days and ill get back to you to let you know the results.
I emailed the guy i bought the DRRI from and he says he will get the receipt of purchase from GC in Brisbane where he bought it and forward it to me. This means that if my attempts fail, i can take it to an authorised dealer to have a look at it.
Thanks again.


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Mon Mar 23, 2015 4:09 am
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I wish you the best :D


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Mon Mar 23, 2015 6:07 am
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Toboras wrote:
Hi,
I have just purchased a '65 Deluxe Reverb Reissue amplifier. It is about 9 months old and in A1 (new) condition.However, when i first played it at home, after buying it from the first owner online, i was most disappointed as the amp lacked the clear crystal 'chime' that these amps are known for.



What brand & model speaker is in the amp, now?


Thanks & welcome to the Forum! How's the weather down under? :mrgreen:


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Mon Mar 23, 2015 10:33 am
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BMW2002Ti wrote:
Toboras wrote:
Hi,
I have just purchased a '65 Deluxe Reverb Reissue amplifier. It is about 9 months old and in A1 (new) condition.However, when i first played it at home, after buying it from the first owner online, i was most disappointed as the amp lacked the clear crystal 'chime' that these amps are known for.



What brand & model speaker is in the amp, now?


Thanks & welcome to the Forum! How's the weather down under? :mrgreen:


I ask it and he answer ; original Jensen ........


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Tue Mar 24, 2015 3:03 am
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Yes, its the original Jensen special design stock bulk standard.
All is original with this amp. Fender US have confirmed it was made in Feb. 2014 and shipped to Australia same month. It was purchased from Guitar Centre in November last year. Its only 4 months old, but as the guy at Fender says; its travelled a long way and tubes are fragile.
Weather is sunny with above average temps thanks. Still in the low 30's and the sea temperature is almost 2 degrees above average. FYI BMW2002TII !! (Love that model of BM btw!)


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Tue Mar 24, 2015 3:23 am
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Yes ,tubes , tubes and tubes first :D


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Post subject: Re: Deluxe Reverb Reissue sound problem
Posted: Tue Mar 24, 2015 6:12 am
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Toboras wrote:
Yes, its the original Jensen special design stock bulk standard.
All is original with this amp. Fender US have confirmed it was made in Feb. 2014 and shipped to Australia same month. It was purchased from Guitar Centre in November last year. Its only 4 months old, but as the guy at Fender says; its travelled a long way and tubes are fragile.
Weather is sunny with above average temps thanks. Still in the low 30's and the sea temperature is almost 2 degrees above average. FYI BMW2002TII !! (Love that model of BM btw!)



Thanks! The most fun car I've own, until the S2000.


Think about these two input & gain stage tubes. The Reissued (Russian made) Tungsol 12AX7. And the Gold Lion (Russian) B759/ECC83. Most modern 6V6GTs lack the harmonics of the original RCA 6V6GT. The JJ 6V6S is noted for a clean, but sterile tone. I really don't know of many modern 6V6GTs that have the desired tone and are long-term reliability. NOS US made 6V6GTA maybe your best bet. You can still get good regular or coin-based, black plate NOS Sylvania and RCA 6V6GTA tubes off the Net --- for a reasonable price.

A good alnico replacement speaker could also help. Something equivalent to the original Chicago made Jensen P12Q. Maybe, the Weber 12A125A.

Good luck! Keep us posted.


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